[RFC/PATCH v2 00/16] Raspberry PI 4 V3D enablement

[RFC/PATCH v2 00/16] Raspberry PI 4 V3D enablement

[Nicolas Saenz Julienne]

This series attempts to enable V3D on BCM2711, the SoC available on the
Raspberry Pi 4 family of boards.

Due to the lack of documentation some things are taken as it from
testing/downstream implementation[1], which I'm hilighting here:

- It's not clear that the following is 100% true, maybe someone can confirm:

	"In BCM2711 the new ARGON ASB took over V3D. The old ASB is still
	present with the ISP and H264 bits, and V3D is in the same place in the
	new ASB as the old one."

- Patch #10 I took as is from the downstream implementation, I can't really
  provide an exact explanation on what changed HW wise.

Ultimately, I need confirmation from the Broadcom folks that they are alright
with patch #12 (deleting pm ops in V3D).

With all this, I get a more or less stable experience using mesa 20.3.4 and
X11/Gnome.

Regards,
Nicolas

---

Changes since v1:
 - Use 'reg-names'
 - Correct ASB names
 - Add missing binding patch for V3D
 - Address Stefan's comments

Nicolas Saenz Julienne (16):
  dt-bindings: soc: bcm: bcm2835-pm: Convert bindings to DT schema
  dt-bindings: soc: bcm: bcm2835-pm: Introduce reg-names
  dt-bindings: soc: bcm: bcm2835-pm: Add support for bcm2711
  ARM: dts: bcm2835/bcm2711: Introduce reg-names in watchdog node
  ARM: dts: bcm2711: Use proper compatible in PM/Watchdog node
  mfd: bcm2835-pm: Rename asb to rpivid_asb
  mfd: bcm2835-pm: Use 'reg-names' to get resources
  mfd: bcm2835-pm: Add support for BCM2711
  soc: bcm: bcm2835-power: Add support for BCM2711's Argon ASB
  soc: bcm: bcm2835-power: Bypass power_on/off() calls
  dt-bindings: gpu: v3d: Add BCM2711's compatible
  drm/v3d: Get rid of pm code
  drm/v3d: Add support for bcm2711
  ARM: dts: bcm2711: Enable V3D
  ARM: configs: Enable DRM_V3D
  arm64: config: Enable DRM_V3D

 .../devicetree/bindings/gpu/brcm,bcm-v3d.yaml |  1 +
 .../bindings/soc/bcm/brcm,bcm2835-pm.txt      | 46 ----------
 .../bindings/soc/bcm/brcm,bcm2835-pm.yaml     | 88 +++++++++++++++++++
 arch/arm/boot/dts/bcm2711.dtsi                | 15 +++-
 arch/arm/boot/dts/bcm2835-common.dtsi         |  1 +
 arch/arm/configs/multi_v7_defconfig           |  1 +
 arch/arm64/configs/defconfig                  |  1 +
 drivers/gpu/drm/v3d/Kconfig                   |  2 +-
 drivers/gpu/drm/v3d/v3d_debugfs.c             | 18 +---
 drivers/gpu/drm/v3d/v3d_drv.c                 | 12 +--
 drivers/gpu/drm/v3d/v3d_gem.c                 |  9 --
 drivers/mfd/bcm2835-pm.c                      | 83 ++++++++++++-----
 drivers/soc/bcm/bcm2835-power.c               | 82 +++++++++++------
 include/linux/mfd/bcm2835-pm.h                |  3 +-
 14 files changed, 225 insertions(+), 137 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.txt
 create mode 100644 Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.yaml

-- 
2.30.0

[RFC/PATCH v2 00/16] Raspberry PI 4 V3D enablement

[Nicolas Saenz Julienne]

This series attempts to enable V3D on BCM2711, the SoC available on the
Raspberry Pi 4 family of boards.

Due to the lack of documentation some things are taken as it from
testing/downstream implementation[1], which I'm hilighting here:

- It's not clear that the following is 100% true, maybe someone can confirm:

	"In BCM2711 the new ARGON ASB took over V3D. The old ASB is still
	present with the ISP and H264 bits, and V3D is in the same place in the
	new ASB as the old one."

- Patch #10 I took as is from the downstream implementation, I can't really
  provide an exact explanation on what changed HW wise.

Ultimately, I need confirmation from the Broadcom folks that they are alright
with patch #12 (deleting pm ops in V3D).

With all this, I get a more or less stable experience using mesa 20.3.4 and
X11/Gnome.

Regards,
Nicolas

---

Changes since v1:
 - Use 'reg-names'
 - Correct ASB names
 - Add missing binding patch for V3D
 - Address Stefan's comments

Nicolas Saenz Julienne (16):
  dt-bindings: soc: bcm: bcm2835-pm: Convert bindings to DT schema
  dt-bindings: soc: bcm: bcm2835-pm: Introduce reg-names
  dt-bindings: soc: bcm: bcm2835-pm: Add support for bcm2711
  ARM: dts: bcm2835/bcm2711: Introduce reg-names in watchdog node
  ARM: dts: bcm2711: Use proper compatible in PM/Watchdog node
  mfd: bcm2835-pm: Rename asb to rpivid_asb
  mfd: bcm2835-pm: Use 'reg-names' to get resources
  mfd: bcm2835-pm: Add support for BCM2711
  soc: bcm: bcm2835-power: Add support for BCM2711's Argon ASB
  soc: bcm: bcm2835-power: Bypass power_on/off() calls
  dt-bindings: gpu: v3d: Add BCM2711's compatible
  drm/v3d: Get rid of pm code
  drm/v3d: Add support for bcm2711
  ARM: dts: bcm2711: Enable V3D
  ARM: configs: Enable DRM_V3D
  arm64: config: Enable DRM_V3D

 .../devicetree/bindings/gpu/brcm,bcm-v3d.yaml |  1 +
 .../bindings/soc/bcm/brcm,bcm2835-pm.txt      | 46 ----------
 .../bindings/soc/bcm/brcm,bcm2835-pm.yaml     | 88 +++++++++++++++++++
 arch/arm/boot/dts/bcm2711.dtsi                | 15 +++-
 arch/arm/boot/dts/bcm2835-common.dtsi         |  1 +
 arch/arm/configs/multi_v7_defconfig           |  1 +
 arch/arm64/configs/defconfig                  |  1 +
 drivers/gpu/drm/v3d/Kconfig                   |  2 +-
 drivers/gpu/drm/v3d/v3d_debugfs.c             | 18 +---
 drivers/gpu/drm/v3d/v3d_drv.c                 | 12 +--
 drivers/gpu/drm/v3d/v3d_gem.c                 |  9 --
 drivers/mfd/bcm2835-pm.c                      | 83 ++++++++++++-----
 drivers/soc/bcm/bcm2835-power.c               | 82 +++++++++++------
 include/linux/mfd/bcm2835-pm.h                |  3 +-
 14 files changed, 225 insertions(+), 137 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.txt
 create mode 100644 Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.yaml

-- 
2.30.0


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

[RFC/PATCH v2 00/16] Raspberry PI 4 V3D enablement

[Nicolas Saenz Julienne]

This series attempts to enable V3D on BCM2711, the SoC available on the
Raspberry Pi 4 family of boards.

Due to the lack of documentation some things are taken as it from
testing/downstream implementation[1], which I'm hilighting here:

- It's not clear that the following is 100% true, maybe someone can confirm:

	"In BCM2711 the new ARGON ASB took over V3D. The old ASB is still
	present with the ISP and H264 bits, and V3D is in the same place in the
	new ASB as the old one."

- Patch #10 I took as is from the downstream implementation, I can't really
  provide an exact explanation on what changed HW wise.

Ultimately, I need confirmation from the Broadcom folks that they are alright
with patch #12 (deleting pm ops in V3D).

With all this, I get a more or less stable experience using mesa 20.3.4 and
X11/Gnome.

Regards,
Nicolas

---

Changes since v1:
 - Use 'reg-names'
 - Correct ASB names
 - Add missing binding patch for V3D
 - Address Stefan's comments

Nicolas Saenz Julienne (16):
  dt-bindings: soc: bcm: bcm2835-pm: Convert bindings to DT schema
  dt-bindings: soc: bcm: bcm2835-pm: Introduce reg-names
  dt-bindings: soc: bcm: bcm2835-pm: Add support for bcm2711
  ARM: dts: bcm2835/bcm2711: Introduce reg-names in watchdog node
  ARM: dts: bcm2711: Use proper compatible in PM/Watchdog node
  mfd: bcm2835-pm: Rename asb to rpivid_asb
  mfd: bcm2835-pm: Use 'reg-names' to get resources
  mfd: bcm2835-pm: Add support for BCM2711
  soc: bcm: bcm2835-power: Add support for BCM2711's Argon ASB
  soc: bcm: bcm2835-power: Bypass power_on/off() calls
  dt-bindings: gpu: v3d: Add BCM2711's compatible
  drm/v3d: Get rid of pm code
  drm/v3d: Add support for bcm2711
  ARM: dts: bcm2711: Enable V3D
  ARM: configs: Enable DRM_V3D
  arm64: config: Enable DRM_V3D

 .../devicetree/bindings/gpu/brcm,bcm-v3d.yaml |  1 +
 .../bindings/soc/bcm/brcm,bcm2835-pm.txt      | 46 ----------
 .../bindings/soc/bcm/brcm,bcm2835-pm.yaml     | 88 +++++++++++++++++++
 arch/arm/boot/dts/bcm2711.dtsi                | 15 +++-
 arch/arm/boot/dts/bcm2835-common.dtsi         |  1 +
 arch/arm/configs/multi_v7_defconfig           |  1 +
 arch/arm64/configs/defconfig                  |  1 +
 drivers/gpu/drm/v3d/Kconfig                   |  2 +-
 drivers/gpu/drm/v3d/v3d_debugfs.c             | 18 +---
 drivers/gpu/drm/v3d/v3d_drv.c                 | 12 +--
 drivers/gpu/drm/v3d/v3d_gem.c                 |  9 --
 drivers/mfd/bcm2835-pm.c                      | 83 ++++++++++++-----
 drivers/soc/bcm/bcm2835-power.c               | 82 +++++++++++------
 include/linux/mfd/bcm2835-pm.h                |  3 +-
 14 files changed, 225 insertions(+), 137 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.txt
 create mode 100644 Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.yaml

-- 
2.30.0

_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel

[RFC/PATCH v2 01/16] dt-bindings: soc: bcm: bcm2835-pm: Convert bindings to DT schema

[Nicolas Saenz Julienne]

This converts the brcm,bcm2835-pm bindings from text to proper schema.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
---
 .../bindings/soc/bcm/brcm,bcm2835-pm.txt      | 46 -----------
 .../bindings/soc/bcm/brcm,bcm2835-pm.yaml     | 79 +++++++++++++++++++
 2 files changed, 79 insertions(+), 46 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.txt
 create mode 100644 Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.yaml

diff --git a/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.txt b/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.txt
deleted file mode 100644
index 72ff033565e5..000000000000
--- a/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.txt
+++ /dev/null
@@ -1,46 +0,0 @@
-BCM2835 PM (Power domains, watchdog)
-
-The PM block controls power domains and some reset lines, and includes
-a watchdog timer.  This binding supersedes the brcm,bcm2835-pm-wdt
-binding which covered some of PM's register range and functionality.
-
-Required properties:
-
-- compatible:		Should be "brcm,bcm2835-pm"
-- reg:			Specifies base physical address and size of the two
-			  register ranges ("PM" and "ASYNC_BRIDGE" in that
-			  order)
-- clocks:		a) v3d: The V3D clock from CPRMAN
-			b) peri_image: The PERI_IMAGE clock from CPRMAN
-			c) h264: The H264 clock from CPRMAN
-			d) isp: The ISP clock from CPRMAN
-- #reset-cells: 	Should be 1.  This property follows the reset controller
-			  bindings[1].
-- #power-domain-cells:	Should be 1.  This property follows the power domain
-			  bindings[2].
-
-Optional properties:
-
-- timeout-sec:		Contains the watchdog timeout in seconds
-- system-power-controller: Whether the watchdog is controlling the
-    system power.  This node follows the power controller bindings[3].
-
-[1] Documentation/devicetree/bindings/reset/reset.txt
-[2] Documentation/devicetree/bindings/power/power-domain.yaml
-[3] Documentation/devicetree/bindings/power/power-controller.txt
-
-Example:
-
-pm {
-	compatible = "brcm,bcm2835-pm", "brcm,bcm2835-pm-wdt";
-	#power-domain-cells = <1>;
-	#reset-cells = <1>;
-	reg = <0x7e100000 0x114>,
-	      <0x7e00a000 0x24>;
-	clocks = <&clocks BCM2835_CLOCK_V3D>,
-		 <&clocks BCM2835_CLOCK_PERI_IMAGE>,
-		 <&clocks BCM2835_CLOCK_H264>,
-		 <&clocks BCM2835_CLOCK_ISP>;
-	clock-names = "v3d", "peri_image", "h264", "isp";
-	system-power-controller;
-};
diff --git a/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.yaml b/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.yaml
new file mode 100644
index 000000000000..8bc65e5f62a7
--- /dev/null
+++ b/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.yaml
@@ -0,0 +1,79 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/soc/bcm/brcm,bcm2835-pm.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: BCM2835 PM (Power domains, watchdog)
+
+description: |
+  The PM block controls power domains and some reset lines, and includes a
+  watchdog timer.
+
+maintainers:
+  - Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
+
+allOf:
+  - $ref: ../../watchdog/watchdog.yaml#
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - brcm,bcm2835-pm
+      - const: brcm,bcm2835-pm-wdt
+
+  reg:
+    minItems: 1
+    maxItems: 2
+    description: Specifies base physical address and size of the two register
+                 ranges, "PM" and "ASYNC_BRIDGE" in that order.
+
+  "#power-domain-cells":
+    const: 1
+
+  "#reset-cells":
+    const: 1
+
+  clocks:
+    minItems: 4
+    maxItems: 4
+
+  clock-names:
+    items:
+      - const: v3d
+      - const: peri_image
+      - const: h264
+      - const: isp
+
+  system-power-controller:
+    type: boolean
+
+  timeout-sec: true
+
+required:
+  - compatible
+  - reg
+  - "#power-domain-cells"
+  - "#reset-cells"
+  - clocks
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/bcm2835.h>
+
+    watchdog@7e100000 {
+        compatible = "brcm,bcm2835-pm", "brcm,bcm2835-pm-wdt";
+        #power-domain-cells = <1>;
+        #reset-cells = <1>;
+        reg = <0x7e100000 0x114>,
+              <0x7e00a000 0x24>;
+        clocks = <&clocks BCM2835_CLOCK_V3D>,
+        	 <&clocks BCM2835_CLOCK_PERI_IMAGE>,
+        	 <&clocks BCM2835_CLOCK_H264>,
+        	 <&clocks BCM2835_CLOCK_ISP>;
+        clock-names = "v3d", "peri_image", "h264", "isp";
+        system-power-controller;
+    };
-- 
2.30.0

[RFC/PATCH v2 01/16] dt-bindings: soc: bcm: bcm2835-pm: Convert bindings to DT schema

[Nicolas Saenz Julienne]

This converts the brcm,bcm2835-pm bindings from text to proper schema.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
---
 .../bindings/soc/bcm/brcm,bcm2835-pm.txt      | 46 -----------
 .../bindings/soc/bcm/brcm,bcm2835-pm.yaml     | 79 +++++++++++++++++++
 2 files changed, 79 insertions(+), 46 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.txt
 create mode 100644 Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.yaml

diff --git a/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.txt b/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.txt
deleted file mode 100644
index 72ff033565e5..000000000000
--- a/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.txt
+++ /dev/null
@@ -1,46 +0,0 @@
-BCM2835 PM (Power domains, watchdog)
-
-The PM block controls power domains and some reset lines, and includes
-a watchdog timer.  This binding supersedes the brcm,bcm2835-pm-wdt
-binding which covered some of PM's register range and functionality.
-
-Required properties:
-
-- compatible:		Should be "brcm,bcm2835-pm"
-- reg:			Specifies base physical address and size of the two
-			  register ranges ("PM" and "ASYNC_BRIDGE" in that
-			  order)
-- clocks:		a) v3d: The V3D clock from CPRMAN
-			b) peri_image: The PERI_IMAGE clock from CPRMAN
-			c) h264: The H264 clock from CPRMAN
-			d) isp: The ISP clock from CPRMAN
-- #reset-cells: 	Should be 1.  This property follows the reset controller
-			  bindings[1].
-- #power-domain-cells:	Should be 1.  This property follows the power domain
-			  bindings[2].
-
-Optional properties:
-
-- timeout-sec:		Contains the watchdog timeout in seconds
-- system-power-controller: Whether the watchdog is controlling the
-    system power.  This node follows the power controller bindings[3].
-
-[1] Documentation/devicetree/bindings/reset/reset.txt
-[2] Documentation/devicetree/bindings/power/power-domain.yaml
-[3] Documentation/devicetree/bindings/power/power-controller.txt
-
-Example:
-
-pm {
-	compatible = "brcm,bcm2835-pm", "brcm,bcm2835-pm-wdt";
-	#power-domain-cells = <1>;
-	#reset-cells = <1>;
-	reg = <0x7e100000 0x114>,
-	      <0x7e00a000 0x24>;
-	clocks = <&clocks BCM2835_CLOCK_V3D>,
-		 <&clocks BCM2835_CLOCK_PERI_IMAGE>,
-		 <&clocks BCM2835_CLOCK_H264>,
-		 <&clocks BCM2835_CLOCK_ISP>;
-	clock-names = "v3d", "peri_image", "h264", "isp";
-	system-power-controller;
-};
diff --git a/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.yaml b/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.yaml
new file mode 100644
index 000000000000..8bc65e5f62a7
--- /dev/null
+++ b/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.yaml
@@ -0,0 +1,79 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/soc/bcm/brcm,bcm2835-pm.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: BCM2835 PM (Power domains, watchdog)
+
+description: |
+  The PM block controls power domains and some reset lines, and includes a
+  watchdog timer.
+
+maintainers:
+  - Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
+
+allOf:
+  - $ref: ../../watchdog/watchdog.yaml#
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - brcm,bcm2835-pm
+      - const: brcm,bcm2835-pm-wdt
+
+  reg:
+    minItems: 1
+    maxItems: 2
+    description: Specifies base physical address and size of the two register
+                 ranges, "PM" and "ASYNC_BRIDGE" in that order.
+
+  "#power-domain-cells":
+    const: 1
+
+  "#reset-cells":
+    const: 1
+
+  clocks:
+    minItems: 4
+    maxItems: 4
+
+  clock-names:
+    items:
+      - const: v3d
+      - const: peri_image
+      - const: h264
+      - const: isp
+
+  system-power-controller:
+    type: boolean
+
+  timeout-sec: true
+
+required:
+  - compatible
+  - reg
+  - "#power-domain-cells"
+  - "#reset-cells"
+  - clocks
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/bcm2835.h>
+
+    watchdog@7e100000 {
+        compatible = "brcm,bcm2835-pm", "brcm,bcm2835-pm-wdt";
+        #power-domain-cells = <1>;
+        #reset-cells = <1>;
+        reg = <0x7e100000 0x114>,
+              <0x7e00a000 0x24>;
+        clocks = <&clocks BCM2835_CLOCK_V3D>,
+        	 <&clocks BCM2835_CLOCK_PERI_IMAGE>,
+        	 <&clocks BCM2835_CLOCK_H264>,
+        	 <&clocks BCM2835_CLOCK_ISP>;
+        clock-names = "v3d", "peri_image", "h264", "isp";
+        system-power-controller;
+    };
-- 
2.30.0


_______________________________________________
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linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

[RFC/PATCH v2 02/16] dt-bindings: soc: bcm: bcm2835-pm: Introduce reg-names

[Nicolas Saenz Julienne]

Anticipating the introduction of BCM2711, of which we'll need to support
its new Argon ASB, introduce reg-names into bcm2835-pm's binding. This
will help to have a consistent mapping between resources and their
meaning.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
---
 .../devicetree/bindings/soc/bcm/brcm,bcm2835-pm.yaml  | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.yaml b/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.yaml
index 8bc65e5f62a7..1dbe3657c690 100644
--- a/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.yaml
+++ b/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.yaml
@@ -26,8 +26,13 @@ properties:
   reg:
     minItems: 1
     maxItems: 2
-    description: Specifies base physical address and size of the two register
-                 ranges, "PM" and "ASYNC_BRIDGE" in that order.
+
+  reg-names:
+    minItems: 1
+    maxItems: 2
+    items:
+      - const: pm
+      - const: rpivid_asb
 
   "#power-domain-cells":
     const: 1
@@ -54,6 +59,7 @@ properties:
 required:
   - compatible
   - reg
+  - reg-names
   - "#power-domain-cells"
   - "#reset-cells"
   - clocks
@@ -70,6 +76,7 @@ examples:
         #reset-cells = <1>;
         reg = <0x7e100000 0x114>,
               <0x7e00a000 0x24>;
+        reg-names = "pm", "rpivid_asb";
         clocks = <&clocks BCM2835_CLOCK_V3D>,
         	 <&clocks BCM2835_CLOCK_PERI_IMAGE>,
         	 <&clocks BCM2835_CLOCK_H264>,
-- 
2.30.0

[RFC/PATCH v2 02/16] dt-bindings: soc: bcm: bcm2835-pm: Introduce reg-names

[Nicolas Saenz Julienne]

Anticipating the introduction of BCM2711, of which we'll need to support
its new Argon ASB, introduce reg-names into bcm2835-pm's binding. This
will help to have a consistent mapping between resources and their
meaning.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
---
 .../devicetree/bindings/soc/bcm/brcm,bcm2835-pm.yaml  | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.yaml b/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.yaml
index 8bc65e5f62a7..1dbe3657c690 100644
--- a/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.yaml
+++ b/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.yaml
@@ -26,8 +26,13 @@ properties:
   reg:
     minItems: 1
     maxItems: 2
-    description: Specifies base physical address and size of the two register
-                 ranges, "PM" and "ASYNC_BRIDGE" in that order.
+
+  reg-names:
+    minItems: 1
+    maxItems: 2
+    items:
+      - const: pm
+      - const: rpivid_asb
 
   "#power-domain-cells":
     const: 1
@@ -54,6 +59,7 @@ properties:
 required:
   - compatible
   - reg
+  - reg-names
   - "#power-domain-cells"
   - "#reset-cells"
   - clocks
@@ -70,6 +76,7 @@ examples:
         #reset-cells = <1>;
         reg = <0x7e100000 0x114>,
               <0x7e00a000 0x24>;
+        reg-names = "pm", "rpivid_asb";
         clocks = <&clocks BCM2835_CLOCK_V3D>,
         	 <&clocks BCM2835_CLOCK_PERI_IMAGE>,
         	 <&clocks BCM2835_CLOCK_H264>,
-- 
2.30.0


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[RFC/PATCH v2 03/16] dt-bindings: soc: bcm: bcm2835-pm: Add support for bcm2711

[Nicolas Saenz Julienne]

Add a new compatible string for BCM2711 and the option to provide a
third reg property for the board's new Argon ASB.

In BCM2711 the new Argon ASB took over V3D, which is our only consumer
of this driver so far. The old ASB is still be present with ISP and H264
bits but no V3D.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
---
 .../devicetree/bindings/soc/bcm/brcm,bcm2835-pm.yaml      | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.yaml b/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.yaml
index 1dbe3657c690..8422c285828c 100644
--- a/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.yaml
+++ b/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.yaml
@@ -21,18 +21,20 @@ properties:
     items:
       - enum:
           - brcm,bcm2835-pm
+          - brcm,bcm2711-pm
       - const: brcm,bcm2835-pm-wdt
 
   reg:
     minItems: 1
-    maxItems: 2
+    maxItems: 3
 
   reg-names:
     minItems: 1
-    maxItems: 2
+    maxItems: 3
     items:
       - const: pm
       - const: rpivid_asb
+      - const: argon_asb
 
   "#power-domain-cells":
     const: 1
@@ -76,7 +78,7 @@ examples:
         #reset-cells = <1>;
         reg = <0x7e100000 0x114>,
               <0x7e00a000 0x24>;
-        reg-names = "pm", "rpivid_asb";
+        reg-names = "pm", "rpivid_asb", "argon_asb";
         clocks = <&clocks BCM2835_CLOCK_V3D>,
         	 <&clocks BCM2835_CLOCK_PERI_IMAGE>,
         	 <&clocks BCM2835_CLOCK_H264>,
-- 
2.30.0

[RFC/PATCH v2 03/16] dt-bindings: soc: bcm: bcm2835-pm: Add support for bcm2711

[Nicolas Saenz Julienne]

Add a new compatible string for BCM2711 and the option to provide a
third reg property for the board's new Argon ASB.

In BCM2711 the new Argon ASB took over V3D, which is our only consumer
of this driver so far. The old ASB is still be present with ISP and H264
bits but no V3D.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
---
 .../devicetree/bindings/soc/bcm/brcm,bcm2835-pm.yaml      | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.yaml b/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.yaml
index 1dbe3657c690..8422c285828c 100644
--- a/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.yaml
+++ b/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.yaml
@@ -21,18 +21,20 @@ properties:
     items:
       - enum:
           - brcm,bcm2835-pm
+          - brcm,bcm2711-pm
       - const: brcm,bcm2835-pm-wdt
 
   reg:
     minItems: 1
-    maxItems: 2
+    maxItems: 3
 
   reg-names:
     minItems: 1
-    maxItems: 2
+    maxItems: 3
     items:
       - const: pm
       - const: rpivid_asb
+      - const: argon_asb
 
   "#power-domain-cells":
     const: 1
@@ -76,7 +78,7 @@ examples:
         #reset-cells = <1>;
         reg = <0x7e100000 0x114>,
               <0x7e00a000 0x24>;
-        reg-names = "pm", "rpivid_asb";
+        reg-names = "pm", "rpivid_asb", "argon_asb";
         clocks = <&clocks BCM2835_CLOCK_V3D>,
         	 <&clocks BCM2835_CLOCK_PERI_IMAGE>,
         	 <&clocks BCM2835_CLOCK_H264>,
-- 
2.30.0


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[RFC/PATCH v2 04/16] ARM: dts: bcm2835/bcm2711: Introduce reg-names in watchdog node

[Nicolas Saenz Julienne]

bcm2835-pm's bindings now support explicitly setting 'reg-names,' so use
them.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
---
 arch/arm/boot/dts/bcm2711.dtsi        | 1 +
 arch/arm/boot/dts/bcm2835-common.dtsi | 1 +
 2 files changed, 2 insertions(+)

diff --git a/arch/arm/boot/dts/bcm2711.dtsi b/arch/arm/boot/dts/bcm2711.dtsi
index 462b1dfb0385..4033818f6a26 100644
--- a/arch/arm/boot/dts/bcm2711.dtsi
+++ b/arch/arm/boot/dts/bcm2711.dtsi
@@ -113,6 +113,7 @@ pm: watchdog@7e100000 {
 			reg = <0x7e100000 0x114>,
 			      <0x7e00a000 0x24>,
 			      <0x7ec11000 0x20>;
+			reg-names = "pm", "rpivid_asb", "argon_asb";
 			clocks = <&clocks BCM2835_CLOCK_V3D>,
 				 <&clocks BCM2835_CLOCK_PERI_IMAGE>,
 				 <&clocks BCM2835_CLOCK_H264>,
diff --git a/arch/arm/boot/dts/bcm2835-common.dtsi b/arch/arm/boot/dts/bcm2835-common.dtsi
index 4119271c979d..8d5f3b59ed35 100644
--- a/arch/arm/boot/dts/bcm2835-common.dtsi
+++ b/arch/arm/boot/dts/bcm2835-common.dtsi
@@ -62,6 +62,7 @@ pm: watchdog@7e100000 {
 			#reset-cells = <1>;
 			reg = <0x7e100000 0x114>,
 			      <0x7e00a000 0x24>;
+			reg-names = "pm", "rpivid_asb";
 			clocks = <&clocks BCM2835_CLOCK_V3D>,
 				 <&clocks BCM2835_CLOCK_PERI_IMAGE>,
 				 <&clocks BCM2835_CLOCK_H264>,
-- 
2.30.0

[RFC/PATCH v2 04/16] ARM: dts: bcm2835/bcm2711: Introduce reg-names in watchdog node

[Nicolas Saenz Julienne]

bcm2835-pm's bindings now support explicitly setting 'reg-names,' so use
them.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
---
 arch/arm/boot/dts/bcm2711.dtsi        | 1 +
 arch/arm/boot/dts/bcm2835-common.dtsi | 1 +
 2 files changed, 2 insertions(+)

diff --git a/arch/arm/boot/dts/bcm2711.dtsi b/arch/arm/boot/dts/bcm2711.dtsi
index 462b1dfb0385..4033818f6a26 100644
--- a/arch/arm/boot/dts/bcm2711.dtsi
+++ b/arch/arm/boot/dts/bcm2711.dtsi
@@ -113,6 +113,7 @@ pm: watchdog@7e100000 {
 			reg = <0x7e100000 0x114>,
 			      <0x7e00a000 0x24>,
 			      <0x7ec11000 0x20>;
+			reg-names = "pm", "rpivid_asb", "argon_asb";
 			clocks = <&clocks BCM2835_CLOCK_V3D>,
 				 <&clocks BCM2835_CLOCK_PERI_IMAGE>,
 				 <&clocks BCM2835_CLOCK_H264>,
diff --git a/arch/arm/boot/dts/bcm2835-common.dtsi b/arch/arm/boot/dts/bcm2835-common.dtsi
index 4119271c979d..8d5f3b59ed35 100644
--- a/arch/arm/boot/dts/bcm2835-common.dtsi
+++ b/arch/arm/boot/dts/bcm2835-common.dtsi
@@ -62,6 +62,7 @@ pm: watchdog@7e100000 {
 			#reset-cells = <1>;
 			reg = <0x7e100000 0x114>,
 			      <0x7e00a000 0x24>;
+			reg-names = "pm", "rpivid_asb";
 			clocks = <&clocks BCM2835_CLOCK_V3D>,
 				 <&clocks BCM2835_CLOCK_PERI_IMAGE>,
 				 <&clocks BCM2835_CLOCK_H264>,
-- 
2.30.0


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[RFC/PATCH v2 05/16] ARM: dts: bcm2711: Use proper compatible in PM/Watchdog node

[Nicolas Saenz Julienne]

A new compatible string was introduced specifically for BCM2711, so make
use of it.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
---
 arch/arm/boot/dts/bcm2711.dtsi | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/bcm2711.dtsi b/arch/arm/boot/dts/bcm2711.dtsi
index 4033818f6a26..5026cfc72a2b 100644
--- a/arch/arm/boot/dts/bcm2711.dtsi
+++ b/arch/arm/boot/dts/bcm2711.dtsi
@@ -107,7 +107,7 @@ dma: dma@7e007000 {
 		};
 
 		pm: watchdog@7e100000 {
-			compatible = "brcm,bcm2835-pm", "brcm,bcm2835-pm-wdt";
+			compatible = "brcm,bcm2711-pm", "brcm,bcm2835-pm-wdt";
 			#power-domain-cells = <1>;
 			#reset-cells = <1>;
 			reg = <0x7e100000 0x114>,
-- 
2.30.0

[RFC/PATCH v2 05/16] ARM: dts: bcm2711: Use proper compatible in PM/Watchdog node

[Nicolas Saenz Julienne]

A new compatible string was introduced specifically for BCM2711, so make
use of it.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
---
 arch/arm/boot/dts/bcm2711.dtsi | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/bcm2711.dtsi b/arch/arm/boot/dts/bcm2711.dtsi
index 4033818f6a26..5026cfc72a2b 100644
--- a/arch/arm/boot/dts/bcm2711.dtsi
+++ b/arch/arm/boot/dts/bcm2711.dtsi
@@ -107,7 +107,7 @@ dma: dma@7e007000 {
 		};
 
 		pm: watchdog@7e100000 {
-			compatible = "brcm,bcm2835-pm", "brcm,bcm2835-pm-wdt";
+			compatible = "brcm,bcm2711-pm", "brcm,bcm2835-pm-wdt";
 			#power-domain-cells = <1>;
 			#reset-cells = <1>;
 			reg = <0x7e100000 0x114>,
-- 
2.30.0


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[RFC/PATCH v2 06/16] mfd: bcm2835-pm: Rename asb to rpivid_asb

[Nicolas Saenz Julienne]

In anticipation to supporting BCM2711 on which new ASB took over V3D,
use a more explicit name on the currently supported one.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
---
 drivers/mfd/bcm2835-pm.c        |  8 ++++----
 drivers/soc/bcm/bcm2835-power.c | 10 +++++-----
 include/linux/mfd/bcm2835-pm.h  |  2 +-
 3 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/drivers/mfd/bcm2835-pm.c b/drivers/mfd/bcm2835-pm.c
index 42fe67f1538e..836343e69f43 100644
--- a/drivers/mfd/bcm2835-pm.c
+++ b/drivers/mfd/bcm2835-pm.c
@@ -50,15 +50,15 @@ static int bcm2835_pm_probe(struct platform_device *pdev)
 	if (ret)
 		return ret;
 
-	/* We'll use the presence of the AXI ASB regs in the
+	/* We'll use the presence of the RPiVid ASB regs in the
 	 * bcm2835-pm binding as the key for whether we can reference
 	 * the full PM register range and support power domains.
 	 */
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
 	if (res) {
-		pm->asb = devm_ioremap_resource(dev, res);
-		if (IS_ERR(pm->asb))
-			return PTR_ERR(pm->asb);
+		pm->rpivid_asb = devm_ioremap_resource(dev, res);
+		if (IS_ERR(pm->rpivid_asb))
+			return PTR_ERR(pm->rpivid_asb);
 
 		ret = devm_mfd_add_devices(dev, -1,
 					   bcm2835_power_devs,
diff --git a/drivers/soc/bcm/bcm2835-power.c b/drivers/soc/bcm/bcm2835-power.c
index 1e0041ec8132..59b8abfc5617 100644
--- a/drivers/soc/bcm/bcm2835-power.c
+++ b/drivers/soc/bcm/bcm2835-power.c
@@ -126,8 +126,8 @@
 
 #define ASB_AXI_BRDG_ID			0x20
 
-#define ASB_READ(reg) readl(power->asb + (reg))
-#define ASB_WRITE(reg, val) writel(PM_PASSWORD | (val), power->asb + (reg))
+#define ASB_READ(reg) readl(power->rpivid_asb + (reg))
+#define ASB_WRITE(reg, val) writel(PM_PASSWORD | (val), power->rpivid_asb + (reg))
 
 struct bcm2835_power_domain {
 	struct generic_pm_domain base;
@@ -140,8 +140,8 @@ struct bcm2835_power {
 	struct device		*dev;
 	/* PM registers. */
 	void __iomem		*base;
-	/* AXI Async bridge registers. */
-	void __iomem		*asb;
+	/* RPiVid bridge registers. */
+	void __iomem		*rpivid_asb;
 
 	struct genpd_onecell_data pd_xlate;
 	struct bcm2835_power_domain domains[BCM2835_POWER_DOMAIN_COUNT];
@@ -625,7 +625,7 @@ static int bcm2835_power_probe(struct platform_device *pdev)
 
 	power->dev = dev;
 	power->base = pm->base;
-	power->asb = pm->asb;
+	power->rpivid_asb = pm->rpivid_asb;
 
 	id = ASB_READ(ASB_AXI_BRDG_ID);
 	if (id != 0x62726467 /* "BRDG" */) {
diff --git a/include/linux/mfd/bcm2835-pm.h b/include/linux/mfd/bcm2835-pm.h
index ed37dc40e82a..ed4bd548db09 100644
--- a/include/linux/mfd/bcm2835-pm.h
+++ b/include/linux/mfd/bcm2835-pm.h
@@ -8,7 +8,7 @@
 struct bcm2835_pm {
 	struct device *dev;
 	void __iomem *base;
-	void __iomem *asb;
+	void __iomem *rpivid_asb;
 };
 
 #endif /* BCM2835_MFD_PM_H */
-- 
2.30.0

[RFC/PATCH v2 06/16] mfd: bcm2835-pm: Rename asb to rpivid_asb

[Nicolas Saenz Julienne]

In anticipation to supporting BCM2711 on which new ASB took over V3D,
use a more explicit name on the currently supported one.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
---
 drivers/mfd/bcm2835-pm.c        |  8 ++++----
 drivers/soc/bcm/bcm2835-power.c | 10 +++++-----
 include/linux/mfd/bcm2835-pm.h  |  2 +-
 3 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/drivers/mfd/bcm2835-pm.c b/drivers/mfd/bcm2835-pm.c
index 42fe67f1538e..836343e69f43 100644
--- a/drivers/mfd/bcm2835-pm.c
+++ b/drivers/mfd/bcm2835-pm.c
@@ -50,15 +50,15 @@ static int bcm2835_pm_probe(struct platform_device *pdev)
 	if (ret)
 		return ret;
 
-	/* We'll use the presence of the AXI ASB regs in the
+	/* We'll use the presence of the RPiVid ASB regs in the
 	 * bcm2835-pm binding as the key for whether we can reference
 	 * the full PM register range and support power domains.
 	 */
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
 	if (res) {
-		pm->asb = devm_ioremap_resource(dev, res);
-		if (IS_ERR(pm->asb))
-			return PTR_ERR(pm->asb);
+		pm->rpivid_asb = devm_ioremap_resource(dev, res);
+		if (IS_ERR(pm->rpivid_asb))
+			return PTR_ERR(pm->rpivid_asb);
 
 		ret = devm_mfd_add_devices(dev, -1,
 					   bcm2835_power_devs,
diff --git a/drivers/soc/bcm/bcm2835-power.c b/drivers/soc/bcm/bcm2835-power.c
index 1e0041ec8132..59b8abfc5617 100644
--- a/drivers/soc/bcm/bcm2835-power.c
+++ b/drivers/soc/bcm/bcm2835-power.c
@@ -126,8 +126,8 @@
 
 #define ASB_AXI_BRDG_ID			0x20
 
-#define ASB_READ(reg) readl(power->asb + (reg))
-#define ASB_WRITE(reg, val) writel(PM_PASSWORD | (val), power->asb + (reg))
+#define ASB_READ(reg) readl(power->rpivid_asb + (reg))
+#define ASB_WRITE(reg, val) writel(PM_PASSWORD | (val), power->rpivid_asb + (reg))
 
 struct bcm2835_power_domain {
 	struct generic_pm_domain base;
@@ -140,8 +140,8 @@ struct bcm2835_power {
 	struct device		*dev;
 	/* PM registers. */
 	void __iomem		*base;
-	/* AXI Async bridge registers. */
-	void __iomem		*asb;
+	/* RPiVid bridge registers. */
+	void __iomem		*rpivid_asb;
 
 	struct genpd_onecell_data pd_xlate;
 	struct bcm2835_power_domain domains[BCM2835_POWER_DOMAIN_COUNT];
@@ -625,7 +625,7 @@ static int bcm2835_power_probe(struct platform_device *pdev)
 
 	power->dev = dev;
 	power->base = pm->base;
-	power->asb = pm->asb;
+	power->rpivid_asb = pm->rpivid_asb;
 
 	id = ASB_READ(ASB_AXI_BRDG_ID);
 	if (id != 0x62726467 /* "BRDG" */) {
diff --git a/include/linux/mfd/bcm2835-pm.h b/include/linux/mfd/bcm2835-pm.h
index ed37dc40e82a..ed4bd548db09 100644
--- a/include/linux/mfd/bcm2835-pm.h
+++ b/include/linux/mfd/bcm2835-pm.h
@@ -8,7 +8,7 @@
 struct bcm2835_pm {
 	struct device *dev;
 	void __iomem *base;
-	void __iomem *asb;
+	void __iomem *rpivid_asb;
 };
 
 #endif /* BCM2835_MFD_PM_H */
-- 
2.30.0


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[RFC/PATCH v2 07/16] mfd: bcm2835-pm: Use 'reg-names' to get resources

[Nicolas Saenz Julienne]

If available in firmware, find resources by their 'reg-names' position
instead of relying on hardcoded offsets. Care is taken to support old
firmware nonetheless.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
---
 drivers/mfd/bcm2835-pm.c | 56 ++++++++++++++++++++++++++--------------
 1 file changed, 37 insertions(+), 19 deletions(-)

diff --git a/drivers/mfd/bcm2835-pm.c b/drivers/mfd/bcm2835-pm.c
index 836343e69f43..182ccdc2a06b 100644
--- a/drivers/mfd/bcm2835-pm.c
+++ b/drivers/mfd/bcm2835-pm.c
@@ -25,9 +25,38 @@ static const struct mfd_cell bcm2835_power_devs[] = {
 	{ .name = "bcm2835-power" },
 };
 
+static int bcm2835_pm_get_pdata(struct platform_device *pdev,
+				struct bcm2835_pm *pm)
+{
+	/* If no 'reg-names' property is found we can assume we're using old
+	 * firmware.
+	 */
+	if (!of_find_property(pm->dev->of_node, "reg-names", NULL)) {
+		dev_warn(pm->dev, "Old devicetree detected, please update your firmware.\n");
+
+		pm->base = devm_platform_ioremap_resource(pdev, 0);
+		if (IS_ERR(pm->base))
+			return PTR_ERR(pm->base);
+
+		pm->rpivid_asb = devm_platform_ioremap_resource(pdev, 1);
+		if (IS_ERR(pm->rpivid_asb))
+			pm->rpivid_asb = NULL;
+	} else {
+		pm->base = devm_platform_ioremap_resource_byname(pdev, "pm");
+		if (IS_ERR(pm->base))
+			return PTR_ERR(pm->base);
+
+		pm->rpivid_asb = devm_platform_ioremap_resource_byname(pdev,
+								       "rpivid_asb");
+		if (IS_ERR(pm->base))
+			pm->rpivid_asb = NULL;
+	}
+
+	return 0;
+}
+
 static int bcm2835_pm_probe(struct platform_device *pdev)
 {
-	struct resource *res;
 	struct device *dev = &pdev->dev;
 	struct bcm2835_pm *pm;
 	int ret;
@@ -39,10 +68,9 @@ static int bcm2835_pm_probe(struct platform_device *pdev)
 
 	pm->dev = dev;
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	pm->base = devm_ioremap_resource(dev, res);
-	if (IS_ERR(pm->base))
-		return PTR_ERR(pm->base);
+	ret = bcm2835_pm_get_pdata(pdev, pm);
+	if (ret)
+		return ret;
 
 	ret = devm_mfd_add_devices(dev, -1,
 				   bcm2835_pm_devs, ARRAY_SIZE(bcm2835_pm_devs),
@@ -54,20 +82,10 @@ static int bcm2835_pm_probe(struct platform_device *pdev)
 	 * bcm2835-pm binding as the key for whether we can reference
 	 * the full PM register range and support power domains.
 	 */
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
-	if (res) {
-		pm->rpivid_asb = devm_ioremap_resource(dev, res);
-		if (IS_ERR(pm->rpivid_asb))
-			return PTR_ERR(pm->rpivid_asb);
-
-		ret = devm_mfd_add_devices(dev, -1,
-					   bcm2835_power_devs,
-					   ARRAY_SIZE(bcm2835_power_devs),
-					   NULL, 0, NULL);
-		if (ret)
-			return ret;
-	}
-
+	if (pm->rpivid_asb)
+		return devm_mfd_add_devices(dev, -1, bcm2835_power_devs,
+					    ARRAY_SIZE(bcm2835_power_devs),
+					    NULL, 0, NULL);
 	return 0;
 }
 
-- 
2.30.0

[RFC/PATCH v2 07/16] mfd: bcm2835-pm: Use 'reg-names' to get resources

[Nicolas Saenz Julienne]

If available in firmware, find resources by their 'reg-names' position
instead of relying on hardcoded offsets. Care is taken to support old
firmware nonetheless.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
---
 drivers/mfd/bcm2835-pm.c | 56 ++++++++++++++++++++++++++--------------
 1 file changed, 37 insertions(+), 19 deletions(-)

diff --git a/drivers/mfd/bcm2835-pm.c b/drivers/mfd/bcm2835-pm.c
index 836343e69f43..182ccdc2a06b 100644
--- a/drivers/mfd/bcm2835-pm.c
+++ b/drivers/mfd/bcm2835-pm.c
@@ -25,9 +25,38 @@ static const struct mfd_cell bcm2835_power_devs[] = {
 	{ .name = "bcm2835-power" },
 };
 
+static int bcm2835_pm_get_pdata(struct platform_device *pdev,
+				struct bcm2835_pm *pm)
+{
+	/* If no 'reg-names' property is found we can assume we're using old
+	 * firmware.
+	 */
+	if (!of_find_property(pm->dev->of_node, "reg-names", NULL)) {
+		dev_warn(pm->dev, "Old devicetree detected, please update your firmware.\n");
+
+		pm->base = devm_platform_ioremap_resource(pdev, 0);
+		if (IS_ERR(pm->base))
+			return PTR_ERR(pm->base);
+
+		pm->rpivid_asb = devm_platform_ioremap_resource(pdev, 1);
+		if (IS_ERR(pm->rpivid_asb))
+			pm->rpivid_asb = NULL;
+	} else {
+		pm->base = devm_platform_ioremap_resource_byname(pdev, "pm");
+		if (IS_ERR(pm->base))
+			return PTR_ERR(pm->base);
+
+		pm->rpivid_asb = devm_platform_ioremap_resource_byname(pdev,
+								       "rpivid_asb");
+		if (IS_ERR(pm->base))
+			pm->rpivid_asb = NULL;
+	}
+
+	return 0;
+}
+
 static int bcm2835_pm_probe(struct platform_device *pdev)
 {
-	struct resource *res;
 	struct device *dev = &pdev->dev;
 	struct bcm2835_pm *pm;
 	int ret;
@@ -39,10 +68,9 @@ static int bcm2835_pm_probe(struct platform_device *pdev)
 
 	pm->dev = dev;
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	pm->base = devm_ioremap_resource(dev, res);
-	if (IS_ERR(pm->base))
-		return PTR_ERR(pm->base);
+	ret = bcm2835_pm_get_pdata(pdev, pm);
+	if (ret)
+		return ret;
 
 	ret = devm_mfd_add_devices(dev, -1,
 				   bcm2835_pm_devs, ARRAY_SIZE(bcm2835_pm_devs),
@@ -54,20 +82,10 @@ static int bcm2835_pm_probe(struct platform_device *pdev)
 	 * bcm2835-pm binding as the key for whether we can reference
 	 * the full PM register range and support power domains.
 	 */
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
-	if (res) {
-		pm->rpivid_asb = devm_ioremap_resource(dev, res);
-		if (IS_ERR(pm->rpivid_asb))
-			return PTR_ERR(pm->rpivid_asb);
-
-		ret = devm_mfd_add_devices(dev, -1,
-					   bcm2835_power_devs,
-					   ARRAY_SIZE(bcm2835_power_devs),
-					   NULL, 0, NULL);
-		if (ret)
-			return ret;
-	}
-
+	if (pm->rpivid_asb)
+		return devm_mfd_add_devices(dev, -1, bcm2835_power_devs,
+					    ARRAY_SIZE(bcm2835_power_devs),
+					    NULL, 0, NULL);
 	return 0;
 }
 
-- 
2.30.0


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

[RFC/PATCH v2 08/16] mfd: bcm2835-pm: Add support for BCM2711

[Nicolas Saenz Julienne]

In BCM2711 the new Argon ASB took over V3D. The old ASB is still present
with the ISP and H264 bits, and V3D is in the same place in the new ASB
as the old one.

As per the devicetree bindings, BCM2711 will provide both the old and
new ASB resources, so get both of them and pass them into
'bcm2835-power,' which will take care of selecting which one to use
accordingly.

Since the Argon ASB's resources were being provided prior to formalizing
the bindings[1], also support the old firmwares that didn't use
'reg-names.'

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>

[1] See: 7dbe8c62ceeb ("ARM: dts: Add minimal Raspberry Pi 4 support")

---

Changes since v1:
 - Use reg-names
 - Correct ASB names

 drivers/mfd/bcm2835-pm.c       | 25 +++++++++++++++++++++++--
 include/linux/mfd/bcm2835-pm.h |  1 +
 2 files changed, 24 insertions(+), 2 deletions(-)

diff --git a/drivers/mfd/bcm2835-pm.c b/drivers/mfd/bcm2835-pm.c
index 182ccdc2a06b..26666ad11f12 100644
--- a/drivers/mfd/bcm2835-pm.c
+++ b/drivers/mfd/bcm2835-pm.c
@@ -6,6 +6,7 @@
  * the WDT and power drivers.
  */
 
+#include <linux/bits.h>
 #include <linux/delay.h>
 #include <linux/io.h>
 #include <linux/mfd/bcm2835-pm.h>
@@ -17,6 +18,9 @@
 #include <linux/types.h>
 #include <linux/watchdog.h>
 
+#define BCM2835		BIT(1)
+#define BCM2711		BIT(2)
+
 static const struct mfd_cell bcm2835_pm_devs[] = {
 	{ .name = "bcm2835-wdt" },
 };
@@ -28,6 +32,8 @@ static const struct mfd_cell bcm2835_power_devs[] = {
 static int bcm2835_pm_get_pdata(struct platform_device *pdev,
 				struct bcm2835_pm *pm)
 {
+	bool is_bcm2711 = (uintptr_t)device_get_match_data(pm->dev) & BCM2711;
+
 	/* If no 'reg-names' property is found we can assume we're using old
 	 * firmware.
 	 */
@@ -41,6 +47,10 @@ static int bcm2835_pm_get_pdata(struct platform_device *pdev,
 		pm->rpivid_asb = devm_platform_ioremap_resource(pdev, 1);
 		if (IS_ERR(pm->rpivid_asb))
 			pm->rpivid_asb = NULL;
+
+		pm->argon_asb = devm_platform_ioremap_resource(pdev, 2);
+		if (IS_ERR(pm->argon_asb))
+			pm->argon_asb = NULL;
 	} else {
 		pm->base = devm_platform_ioremap_resource_byname(pdev, "pm");
 		if (IS_ERR(pm->base))
@@ -50,6 +60,16 @@ static int bcm2835_pm_get_pdata(struct platform_device *pdev,
 								       "rpivid_asb");
 		if (IS_ERR(pm->base))
 			pm->rpivid_asb = NULL;
+
+		pm->argon_asb = devm_platform_ioremap_resource_byname(pdev,
+								      "argon_asb");
+		if (IS_ERR(pm->base))
+			pm->argon_asb = NULL;
+
+		if (pm->argon_asb && !is_bcm2711) {
+			dev_err(pm->dev, "Argon ASB support only present in BCM2711\n");
+			return -EINVAL;
+		}
 	}
 
 	return 0;
@@ -90,8 +110,9 @@ static int bcm2835_pm_probe(struct platform_device *pdev)
 }
 
 static const struct of_device_id bcm2835_pm_of_match[] = {
-	{ .compatible = "brcm,bcm2835-pm-wdt", },
-	{ .compatible = "brcm,bcm2835-pm", },
+	{ .compatible = "brcm,bcm2835-pm-wdt", .data = (void *)BCM2835},
+	{ .compatible = "brcm,bcm2835-pm", .data = (void *)BCM2835},
+	{ .compatible = "brcm,bcm2711-pm", .data = (void *)BCM2711},
 	{},
 };
 MODULE_DEVICE_TABLE(of, bcm2835_pm_of_match);
diff --git a/include/linux/mfd/bcm2835-pm.h b/include/linux/mfd/bcm2835-pm.h
index ed4bd548db09..89fb2b5cdc1a 100644
--- a/include/linux/mfd/bcm2835-pm.h
+++ b/include/linux/mfd/bcm2835-pm.h
@@ -9,6 +9,7 @@ struct bcm2835_pm {
 	struct device *dev;
 	void __iomem *base;
 	void __iomem *rpivid_asb;
+	void __iomem *argon_asb;
 };
 
 #endif /* BCM2835_MFD_PM_H */
-- 
2.30.0

[RFC/PATCH v2 08/16] mfd: bcm2835-pm: Add support for BCM2711

[Nicolas Saenz Julienne]

In BCM2711 the new Argon ASB took over V3D. The old ASB is still present
with the ISP and H264 bits, and V3D is in the same place in the new ASB
as the old one.

As per the devicetree bindings, BCM2711 will provide both the old and
new ASB resources, so get both of them and pass them into
'bcm2835-power,' which will take care of selecting which one to use
accordingly.

Since the Argon ASB's resources were being provided prior to formalizing
the bindings[1], also support the old firmwares that didn't use
'reg-names.'

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>

[1] See: 7dbe8c62ceeb ("ARM: dts: Add minimal Raspberry Pi 4 support")

---

Changes since v1:
 - Use reg-names
 - Correct ASB names

 drivers/mfd/bcm2835-pm.c       | 25 +++++++++++++++++++++++--
 include/linux/mfd/bcm2835-pm.h |  1 +
 2 files changed, 24 insertions(+), 2 deletions(-)

diff --git a/drivers/mfd/bcm2835-pm.c b/drivers/mfd/bcm2835-pm.c
index 182ccdc2a06b..26666ad11f12 100644
--- a/drivers/mfd/bcm2835-pm.c
+++ b/drivers/mfd/bcm2835-pm.c
@@ -6,6 +6,7 @@
  * the WDT and power drivers.
  */
 
+#include <linux/bits.h>
 #include <linux/delay.h>
 #include <linux/io.h>
 #include <linux/mfd/bcm2835-pm.h>
@@ -17,6 +18,9 @@
 #include <linux/types.h>
 #include <linux/watchdog.h>
 
+#define BCM2835		BIT(1)
+#define BCM2711		BIT(2)
+
 static const struct mfd_cell bcm2835_pm_devs[] = {
 	{ .name = "bcm2835-wdt" },
 };
@@ -28,6 +32,8 @@ static const struct mfd_cell bcm2835_power_devs[] = {
 static int bcm2835_pm_get_pdata(struct platform_device *pdev,
 				struct bcm2835_pm *pm)
 {
+	bool is_bcm2711 = (uintptr_t)device_get_match_data(pm->dev) & BCM2711;
+
 	/* If no 'reg-names' property is found we can assume we're using old
 	 * firmware.
 	 */
@@ -41,6 +47,10 @@ static int bcm2835_pm_get_pdata(struct platform_device *pdev,
 		pm->rpivid_asb = devm_platform_ioremap_resource(pdev, 1);
 		if (IS_ERR(pm->rpivid_asb))
 			pm->rpivid_asb = NULL;
+
+		pm->argon_asb = devm_platform_ioremap_resource(pdev, 2);
+		if (IS_ERR(pm->argon_asb))
+			pm->argon_asb = NULL;
 	} else {
 		pm->base = devm_platform_ioremap_resource_byname(pdev, "pm");
 		if (IS_ERR(pm->base))
@@ -50,6 +60,16 @@ static int bcm2835_pm_get_pdata(struct platform_device *pdev,
 								       "rpivid_asb");
 		if (IS_ERR(pm->base))
 			pm->rpivid_asb = NULL;
+
+		pm->argon_asb = devm_platform_ioremap_resource_byname(pdev,
+								      "argon_asb");
+		if (IS_ERR(pm->base))
+			pm->argon_asb = NULL;
+
+		if (pm->argon_asb && !is_bcm2711) {
+			dev_err(pm->dev, "Argon ASB support only present in BCM2711\n");
+			return -EINVAL;
+		}
 	}
 
 	return 0;
@@ -90,8 +110,9 @@ static int bcm2835_pm_probe(struct platform_device *pdev)
 }
 
 static const struct of_device_id bcm2835_pm_of_match[] = {
-	{ .compatible = "brcm,bcm2835-pm-wdt", },
-	{ .compatible = "brcm,bcm2835-pm", },
+	{ .compatible = "brcm,bcm2835-pm-wdt", .data = (void *)BCM2835},
+	{ .compatible = "brcm,bcm2835-pm", .data = (void *)BCM2835},
+	{ .compatible = "brcm,bcm2711-pm", .data = (void *)BCM2711},
 	{},
 };
 MODULE_DEVICE_TABLE(of, bcm2835_pm_of_match);
diff --git a/include/linux/mfd/bcm2835-pm.h b/include/linux/mfd/bcm2835-pm.h
index ed4bd548db09..89fb2b5cdc1a 100644
--- a/include/linux/mfd/bcm2835-pm.h
+++ b/include/linux/mfd/bcm2835-pm.h
@@ -9,6 +9,7 @@ struct bcm2835_pm {
 	struct device *dev;
 	void __iomem *base;
 	void __iomem *rpivid_asb;
+	void __iomem *argon_asb;
 };
 
 #endif /* BCM2835_MFD_PM_H */
-- 
2.30.0


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

[RFC/PATCH v2 09/16] soc: bcm: bcm2835-power: Add support for BCM2711's Argon ASB

[Nicolas Saenz Julienne]

In BCM2711 the new ARGON ASB took over V3D. The old ASB is still present
with the ISP and H264 bits, and V3D is in the same place in the new ASB
as the old one.

Use the fact that 'pm->argon_asb' is populated as a hint that we're on
BCM2711. On top of that introduce the macro ASB_BASE() which will select
the correct ASB register base, based on whether we're trying to access
V3D and which platform we're on.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>

---

Changes since v1:
 - Correct names

 drivers/soc/bcm/bcm2835-power.c | 68 ++++++++++++++++++++-------------
 1 file changed, 42 insertions(+), 26 deletions(-)

diff --git a/drivers/soc/bcm/bcm2835-power.c b/drivers/soc/bcm/bcm2835-power.c
index 59b8abfc5617..42e105758b47 100644
--- a/drivers/soc/bcm/bcm2835-power.c
+++ b/drivers/soc/bcm/bcm2835-power.c
@@ -126,8 +126,9 @@
 
 #define ASB_AXI_BRDG_ID			0x20
 
-#define ASB_READ(reg) readl(power->rpivid_asb + (reg))
-#define ASB_WRITE(reg, val) writel(PM_PASSWORD | (val), power->rpivid_asb + (reg))
+#define ASB_BASE(is_v3d) (is_v3d && power->argon_asb ? power->argon_asb : power->rpivid_asb)
+#define ASB_READ(reg, is_v3d) readl(ASB_BASE(is_v3d) + (reg))
+#define ASB_WRITE(reg, val, is_v3d) writel(PM_PASSWORD | (val), ASB_BASE(is_v3d) + (reg))
 
 struct bcm2835_power_domain {
 	struct generic_pm_domain base;
@@ -142,13 +143,16 @@ struct bcm2835_power {
 	void __iomem		*base;
 	/* RPiVid bridge registers. */
 	void __iomem		*rpivid_asb;
+	/* Argon bridge registers. */
+	void __iomem		*argon_asb;
 
 	struct genpd_onecell_data pd_xlate;
 	struct bcm2835_power_domain domains[BCM2835_POWER_DOMAIN_COUNT];
 	struct reset_controller_dev reset;
 };
 
-static int bcm2835_asb_enable(struct bcm2835_power *power, u32 reg)
+static int bcm2835_asb_enable(struct bcm2835_power *power, u32 reg,
+			      bool is_v3d)
 {
 	u64 start;
 
@@ -158,8 +162,8 @@ static int bcm2835_asb_enable(struct bcm2835_power *power, u32 reg)
 	start = ktime_get_ns();
 
 	/* Enable the module's async AXI bridges. */
-	ASB_WRITE(reg, ASB_READ(reg) & ~ASB_REQ_STOP);
-	while (ASB_READ(reg) & ASB_ACK) {
+	ASB_WRITE(reg, ASB_READ(reg, is_v3d) & ~ASB_REQ_STOP, is_v3d);
+	while (ASB_READ(reg, is_v3d) & ASB_ACK) {
 		cpu_relax();
 		if (ktime_get_ns() - start >= 1000)
 			return -ETIMEDOUT;
@@ -168,7 +172,8 @@ static int bcm2835_asb_enable(struct bcm2835_power *power, u32 reg)
 	return 0;
 }
 
-static int bcm2835_asb_disable(struct bcm2835_power *power, u32 reg)
+static int bcm2835_asb_disable(struct bcm2835_power *power, u32 reg,
+			       bool is_v3d)
 {
 	u64 start;
 
@@ -178,8 +183,8 @@ static int bcm2835_asb_disable(struct bcm2835_power *power, u32 reg)
 	start = ktime_get_ns();
 
 	/* Enable the module's async AXI bridges. */
-	ASB_WRITE(reg, ASB_READ(reg) | ASB_REQ_STOP);
-	while (!(ASB_READ(reg) & ASB_ACK)) {
+	ASB_WRITE(reg, ASB_READ(reg, is_v3d) | ASB_REQ_STOP, is_v3d);
+	while (!(ASB_READ(reg, is_v3d) & ASB_ACK)) {
 		cpu_relax();
 		if (ktime_get_ns() - start >= 1000)
 			return -ETIMEDOUT;
@@ -274,7 +279,8 @@ static int bcm2835_asb_power_on(struct bcm2835_power_domain *pd,
 				u32 pm_reg,
 				u32 asb_m_reg,
 				u32 asb_s_reg,
-				u32 reset_flags)
+				u32 reset_flags,
+				bool is_v3d)
 {
 	struct bcm2835_power *power = pd->power;
 	int ret;
@@ -301,13 +307,13 @@ static int bcm2835_asb_power_on(struct bcm2835_power_domain *pd,
 		goto err_enable_resets;
 	}
 
-	ret = bcm2835_asb_enable(power, asb_m_reg);
+	ret = bcm2835_asb_enable(power, asb_m_reg, is_v3d);
 	if (ret) {
 		dev_err(power->dev, "Failed to enable ASB master for %s\n",
 			pd->base.name);
 		goto err_disable_clk;
 	}
-	ret = bcm2835_asb_enable(power, asb_s_reg);
+	ret = bcm2835_asb_enable(power, asb_s_reg, is_v3d);
 	if (ret) {
 		dev_err(power->dev, "Failed to enable ASB slave for %s\n",
 			pd->base.name);
@@ -317,7 +323,7 @@ static int bcm2835_asb_power_on(struct bcm2835_power_domain *pd,
 	return 0;
 
 err_disable_asb_master:
-	bcm2835_asb_disable(power, asb_m_reg);
+	bcm2835_asb_disable(power, asb_m_reg, is_v3d);
 err_disable_clk:
 	clk_disable_unprepare(pd->clk);
 err_enable_resets:
@@ -329,22 +335,23 @@ static int bcm2835_asb_power_off(struct bcm2835_power_domain *pd,
 				 u32 pm_reg,
 				 u32 asb_m_reg,
 				 u32 asb_s_reg,
-				 u32 reset_flags)
+				 u32 reset_flags,
+				 bool is_v3d)
 {
 	struct bcm2835_power *power = pd->power;
 	int ret;
 
-	ret = bcm2835_asb_disable(power, asb_s_reg);
+	ret = bcm2835_asb_disable(power, asb_s_reg, is_v3d);
 	if (ret) {
 		dev_warn(power->dev, "Failed to disable ASB slave for %s\n",
 			 pd->base.name);
 		return ret;
 	}
-	ret = bcm2835_asb_disable(power, asb_m_reg);
+	ret = bcm2835_asb_disable(power, asb_m_reg, is_v3d);
 	if (ret) {
 		dev_warn(power->dev, "Failed to disable ASB master for %s\n",
 			 pd->base.name);
-		bcm2835_asb_enable(power, asb_s_reg);
+		bcm2835_asb_enable(power, asb_s_reg, is_v3d);
 		return ret;
 	}
 
@@ -369,7 +376,7 @@ static int bcm2835_power_pd_power_on(struct generic_pm_domain *domain)
 	case BCM2835_POWER_DOMAIN_GRAFX_V3D:
 		return bcm2835_asb_power_on(pd, PM_GRAFX,
 					    ASB_V3D_M_CTRL, ASB_V3D_S_CTRL,
-					    PM_V3DRSTN);
+					    PM_V3DRSTN, true);
 
 	case BCM2835_POWER_DOMAIN_IMAGE:
 		return bcm2835_power_power_on(pd, PM_IMAGE);
@@ -377,17 +384,17 @@ static int bcm2835_power_pd_power_on(struct generic_pm_domain *domain)
 	case BCM2835_POWER_DOMAIN_IMAGE_PERI:
 		return bcm2835_asb_power_on(pd, PM_IMAGE,
 					    0, 0,
-					    PM_PERIRSTN);
+					    PM_PERIRSTN, false);
 
 	case BCM2835_POWER_DOMAIN_IMAGE_ISP:
 		return bcm2835_asb_power_on(pd, PM_IMAGE,
 					    ASB_ISP_M_CTRL, ASB_ISP_S_CTRL,
-					    PM_ISPRSTN);
+					    PM_ISPRSTN, false);
 
 	case BCM2835_POWER_DOMAIN_IMAGE_H264:
 		return bcm2835_asb_power_on(pd, PM_IMAGE,
 					    ASB_H264_M_CTRL, ASB_H264_S_CTRL,
-					    PM_H264RSTN);
+					    PM_H264RSTN, false);
 
 	case BCM2835_POWER_DOMAIN_USB:
 		PM_WRITE(PM_USB, PM_USB_CTRLEN);
@@ -435,7 +442,7 @@ static int bcm2835_power_pd_power_off(struct generic_pm_domain *domain)
 	case BCM2835_POWER_DOMAIN_GRAFX_V3D:
 		return bcm2835_asb_power_off(pd, PM_GRAFX,
 					     ASB_V3D_M_CTRL, ASB_V3D_S_CTRL,
-					     PM_V3DRSTN);
+					     PM_V3DRSTN, true);
 
 	case BCM2835_POWER_DOMAIN_IMAGE:
 		return bcm2835_power_power_off(pd, PM_IMAGE);
@@ -443,17 +450,17 @@ static int bcm2835_power_pd_power_off(struct generic_pm_domain *domain)
 	case BCM2835_POWER_DOMAIN_IMAGE_PERI:
 		return bcm2835_asb_power_off(pd, PM_IMAGE,
 					     0, 0,
-					     PM_PERIRSTN);
+					     PM_PERIRSTN, false);
 
 	case BCM2835_POWER_DOMAIN_IMAGE_ISP:
 		return bcm2835_asb_power_off(pd, PM_IMAGE,
 					     ASB_ISP_M_CTRL, ASB_ISP_S_CTRL,
-					     PM_ISPRSTN);
+					     PM_ISPRSTN, false);
 
 	case BCM2835_POWER_DOMAIN_IMAGE_H264:
 		return bcm2835_asb_power_off(pd, PM_IMAGE,
 					     ASB_H264_M_CTRL, ASB_H264_S_CTRL,
-					     PM_H264RSTN);
+					     PM_H264RSTN, false);
 
 	case BCM2835_POWER_DOMAIN_USB:
 		PM_WRITE(PM_USB, 0);
@@ -626,13 +633,22 @@ static int bcm2835_power_probe(struct platform_device *pdev)
 	power->dev = dev;
 	power->base = pm->base;
 	power->rpivid_asb = pm->rpivid_asb;
+	power->argon_asb = pm->argon_asb;
 
-	id = ASB_READ(ASB_AXI_BRDG_ID);
+	id = ASB_READ(ASB_AXI_BRDG_ID, false);
 	if (id != 0x62726467 /* "BRDG" */) {
-		dev_err(dev, "ASB register ID returned 0x%08x\n", id);
+		dev_err(dev, "RPiVid ASB register ID returned 0x%08x\n", id);
 		return -ENODEV;
 	}
 
+	if (pm->argon_asb) {
+		id = ASB_READ(ASB_AXI_BRDG_ID, true);
+		if (id != 0x62726467 /* "BRDG" */) {
+			dev_err(dev, "Argon ASB register ID returned 0x%08x\n", id);
+			return -ENODEV;
+		}
+	}
+
 	power->pd_xlate.domains = devm_kcalloc(dev,
 					       ARRAY_SIZE(power_domain_names),
 					       sizeof(*power->pd_xlate.domains),
-- 
2.30.0

[RFC/PATCH v2 09/16] soc: bcm: bcm2835-power: Add support for BCM2711's Argon ASB

[Nicolas Saenz Julienne]

In BCM2711 the new ARGON ASB took over V3D. The old ASB is still present
with the ISP and H264 bits, and V3D is in the same place in the new ASB
as the old one.

Use the fact that 'pm->argon_asb' is populated as a hint that we're on
BCM2711. On top of that introduce the macro ASB_BASE() which will select
the correct ASB register base, based on whether we're trying to access
V3D and which platform we're on.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>

---

Changes since v1:
 - Correct names

 drivers/soc/bcm/bcm2835-power.c | 68 ++++++++++++++++++++-------------
 1 file changed, 42 insertions(+), 26 deletions(-)

diff --git a/drivers/soc/bcm/bcm2835-power.c b/drivers/soc/bcm/bcm2835-power.c
index 59b8abfc5617..42e105758b47 100644
--- a/drivers/soc/bcm/bcm2835-power.c
+++ b/drivers/soc/bcm/bcm2835-power.c
@@ -126,8 +126,9 @@
 
 #define ASB_AXI_BRDG_ID			0x20
 
-#define ASB_READ(reg) readl(power->rpivid_asb + (reg))
-#define ASB_WRITE(reg, val) writel(PM_PASSWORD | (val), power->rpivid_asb + (reg))
+#define ASB_BASE(is_v3d) (is_v3d && power->argon_asb ? power->argon_asb : power->rpivid_asb)
+#define ASB_READ(reg, is_v3d) readl(ASB_BASE(is_v3d) + (reg))
+#define ASB_WRITE(reg, val, is_v3d) writel(PM_PASSWORD | (val), ASB_BASE(is_v3d) + (reg))
 
 struct bcm2835_power_domain {
 	struct generic_pm_domain base;
@@ -142,13 +143,16 @@ struct bcm2835_power {
 	void __iomem		*base;
 	/* RPiVid bridge registers. */
 	void __iomem		*rpivid_asb;
+	/* Argon bridge registers. */
+	void __iomem		*argon_asb;
 
 	struct genpd_onecell_data pd_xlate;
 	struct bcm2835_power_domain domains[BCM2835_POWER_DOMAIN_COUNT];
 	struct reset_controller_dev reset;
 };
 
-static int bcm2835_asb_enable(struct bcm2835_power *power, u32 reg)
+static int bcm2835_asb_enable(struct bcm2835_power *power, u32 reg,
+			      bool is_v3d)
 {
 	u64 start;
 
@@ -158,8 +162,8 @@ static int bcm2835_asb_enable(struct bcm2835_power *power, u32 reg)
 	start = ktime_get_ns();
 
 	/* Enable the module's async AXI bridges. */
-	ASB_WRITE(reg, ASB_READ(reg) & ~ASB_REQ_STOP);
-	while (ASB_READ(reg) & ASB_ACK) {
+	ASB_WRITE(reg, ASB_READ(reg, is_v3d) & ~ASB_REQ_STOP, is_v3d);
+	while (ASB_READ(reg, is_v3d) & ASB_ACK) {
 		cpu_relax();
 		if (ktime_get_ns() - start >= 1000)
 			return -ETIMEDOUT;
@@ -168,7 +172,8 @@ static int bcm2835_asb_enable(struct bcm2835_power *power, u32 reg)
 	return 0;
 }
 
-static int bcm2835_asb_disable(struct bcm2835_power *power, u32 reg)
+static int bcm2835_asb_disable(struct bcm2835_power *power, u32 reg,
+			       bool is_v3d)
 {
 	u64 start;
 
@@ -178,8 +183,8 @@ static int bcm2835_asb_disable(struct bcm2835_power *power, u32 reg)
 	start = ktime_get_ns();
 
 	/* Enable the module's async AXI bridges. */
-	ASB_WRITE(reg, ASB_READ(reg) | ASB_REQ_STOP);
-	while (!(ASB_READ(reg) & ASB_ACK)) {
+	ASB_WRITE(reg, ASB_READ(reg, is_v3d) | ASB_REQ_STOP, is_v3d);
+	while (!(ASB_READ(reg, is_v3d) & ASB_ACK)) {
 		cpu_relax();
 		if (ktime_get_ns() - start >= 1000)
 			return -ETIMEDOUT;
@@ -274,7 +279,8 @@ static int bcm2835_asb_power_on(struct bcm2835_power_domain *pd,
 				u32 pm_reg,
 				u32 asb_m_reg,
 				u32 asb_s_reg,
-				u32 reset_flags)
+				u32 reset_flags,
+				bool is_v3d)
 {
 	struct bcm2835_power *power = pd->power;
 	int ret;
@@ -301,13 +307,13 @@ static int bcm2835_asb_power_on(struct bcm2835_power_domain *pd,
 		goto err_enable_resets;
 	}
 
-	ret = bcm2835_asb_enable(power, asb_m_reg);
+	ret = bcm2835_asb_enable(power, asb_m_reg, is_v3d);
 	if (ret) {
 		dev_err(power->dev, "Failed to enable ASB master for %s\n",
 			pd->base.name);
 		goto err_disable_clk;
 	}
-	ret = bcm2835_asb_enable(power, asb_s_reg);
+	ret = bcm2835_asb_enable(power, asb_s_reg, is_v3d);
 	if (ret) {
 		dev_err(power->dev, "Failed to enable ASB slave for %s\n",
 			pd->base.name);
@@ -317,7 +323,7 @@ static int bcm2835_asb_power_on(struct bcm2835_power_domain *pd,
 	return 0;
 
 err_disable_asb_master:
-	bcm2835_asb_disable(power, asb_m_reg);
+	bcm2835_asb_disable(power, asb_m_reg, is_v3d);
 err_disable_clk:
 	clk_disable_unprepare(pd->clk);
 err_enable_resets:
@@ -329,22 +335,23 @@ static int bcm2835_asb_power_off(struct bcm2835_power_domain *pd,
 				 u32 pm_reg,
 				 u32 asb_m_reg,
 				 u32 asb_s_reg,
-				 u32 reset_flags)
+				 u32 reset_flags,
+				 bool is_v3d)
 {
 	struct bcm2835_power *power = pd->power;
 	int ret;
 
-	ret = bcm2835_asb_disable(power, asb_s_reg);
+	ret = bcm2835_asb_disable(power, asb_s_reg, is_v3d);
 	if (ret) {
 		dev_warn(power->dev, "Failed to disable ASB slave for %s\n",
 			 pd->base.name);
 		return ret;
 	}
-	ret = bcm2835_asb_disable(power, asb_m_reg);
+	ret = bcm2835_asb_disable(power, asb_m_reg, is_v3d);
 	if (ret) {
 		dev_warn(power->dev, "Failed to disable ASB master for %s\n",
 			 pd->base.name);
-		bcm2835_asb_enable(power, asb_s_reg);
+		bcm2835_asb_enable(power, asb_s_reg, is_v3d);
 		return ret;
 	}
 
@@ -369,7 +376,7 @@ static int bcm2835_power_pd_power_on(struct generic_pm_domain *domain)
 	case BCM2835_POWER_DOMAIN_GRAFX_V3D:
 		return bcm2835_asb_power_on(pd, PM_GRAFX,
 					    ASB_V3D_M_CTRL, ASB_V3D_S_CTRL,
-					    PM_V3DRSTN);
+					    PM_V3DRSTN, true);
 
 	case BCM2835_POWER_DOMAIN_IMAGE:
 		return bcm2835_power_power_on(pd, PM_IMAGE);
@@ -377,17 +384,17 @@ static int bcm2835_power_pd_power_on(struct generic_pm_domain *domain)
 	case BCM2835_POWER_DOMAIN_IMAGE_PERI:
 		return bcm2835_asb_power_on(pd, PM_IMAGE,
 					    0, 0,
-					    PM_PERIRSTN);
+					    PM_PERIRSTN, false);
 
 	case BCM2835_POWER_DOMAIN_IMAGE_ISP:
 		return bcm2835_asb_power_on(pd, PM_IMAGE,
 					    ASB_ISP_M_CTRL, ASB_ISP_S_CTRL,
-					    PM_ISPRSTN);
+					    PM_ISPRSTN, false);
 
 	case BCM2835_POWER_DOMAIN_IMAGE_H264:
 		return bcm2835_asb_power_on(pd, PM_IMAGE,
 					    ASB_H264_M_CTRL, ASB_H264_S_CTRL,
-					    PM_H264RSTN);
+					    PM_H264RSTN, false);
 
 	case BCM2835_POWER_DOMAIN_USB:
 		PM_WRITE(PM_USB, PM_USB_CTRLEN);
@@ -435,7 +442,7 @@ static int bcm2835_power_pd_power_off(struct generic_pm_domain *domain)
 	case BCM2835_POWER_DOMAIN_GRAFX_V3D:
 		return bcm2835_asb_power_off(pd, PM_GRAFX,
 					     ASB_V3D_M_CTRL, ASB_V3D_S_CTRL,
-					     PM_V3DRSTN);
+					     PM_V3DRSTN, true);
 
 	case BCM2835_POWER_DOMAIN_IMAGE:
 		return bcm2835_power_power_off(pd, PM_IMAGE);
@@ -443,17 +450,17 @@ static int bcm2835_power_pd_power_off(struct generic_pm_domain *domain)
 	case BCM2835_POWER_DOMAIN_IMAGE_PERI:
 		return bcm2835_asb_power_off(pd, PM_IMAGE,
 					     0, 0,
-					     PM_PERIRSTN);
+					     PM_PERIRSTN, false);
 
 	case BCM2835_POWER_DOMAIN_IMAGE_ISP:
 		return bcm2835_asb_power_off(pd, PM_IMAGE,
 					     ASB_ISP_M_CTRL, ASB_ISP_S_CTRL,
-					     PM_ISPRSTN);
+					     PM_ISPRSTN, false);
 
 	case BCM2835_POWER_DOMAIN_IMAGE_H264:
 		return bcm2835_asb_power_off(pd, PM_IMAGE,
 					     ASB_H264_M_CTRL, ASB_H264_S_CTRL,
-					     PM_H264RSTN);
+					     PM_H264RSTN, false);
 
 	case BCM2835_POWER_DOMAIN_USB:
 		PM_WRITE(PM_USB, 0);
@@ -626,13 +633,22 @@ static int bcm2835_power_probe(struct platform_device *pdev)
 	power->dev = dev;
 	power->base = pm->base;
 	power->rpivid_asb = pm->rpivid_asb;
+	power->argon_asb = pm->argon_asb;
 
-	id = ASB_READ(ASB_AXI_BRDG_ID);
+	id = ASB_READ(ASB_AXI_BRDG_ID, false);
 	if (id != 0x62726467 /* "BRDG" */) {
-		dev_err(dev, "ASB register ID returned 0x%08x\n", id);
+		dev_err(dev, "RPiVid ASB register ID returned 0x%08x\n", id);
 		return -ENODEV;
 	}
 
+	if (pm->argon_asb) {
+		id = ASB_READ(ASB_AXI_BRDG_ID, true);
+		if (id != 0x62726467 /* "BRDG" */) {
+			dev_err(dev, "Argon ASB register ID returned 0x%08x\n", id);
+			return -ENODEV;
+		}
+	}
+
 	power->pd_xlate.domains = devm_kcalloc(dev,
 					       ARRAY_SIZE(power_domain_names),
 					       sizeof(*power->pd_xlate.domains),
-- 
2.30.0


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[RFC/PATCH v2 10/16] soc: bcm: bcm2835-power: Bypass power_on/off() calls

[Nicolas Saenz Julienne]

Bypass power_on/power_off() when running on BCM2711 as they are not
needed.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
---
 drivers/soc/bcm/bcm2835-power.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/soc/bcm/bcm2835-power.c b/drivers/soc/bcm/bcm2835-power.c
index 42e105758b47..e9c425419174 100644
--- a/drivers/soc/bcm/bcm2835-power.c
+++ b/drivers/soc/bcm/bcm2835-power.c
@@ -197,6 +197,10 @@ static int bcm2835_power_power_off(struct bcm2835_power_domain *pd, u32 pm_reg)
 {
 	struct bcm2835_power *power = pd->power;
 
+	/* We don't run this on BCM2711 */
+	if (power->argon_asb)
+		return 0;
+
 	/* Enable functional isolation */
 	PM_WRITE(pm_reg, PM_READ(pm_reg) & ~PM_ISFUNC);
 
@@ -218,6 +222,10 @@ static int bcm2835_power_power_on(struct bcm2835_power_domain *pd, u32 pm_reg)
 	int inrush;
 	bool powok;
 
+	/* We don't run this on BCM2711 */
+	if (power->argon_asb)
+		return 0;
+
 	/* If it was already powered on by the fw, leave it that way. */
 	if (PM_READ(pm_reg) & PM_POWUP)
 		return 0;
-- 
2.30.0

[RFC/PATCH v2 10/16] soc: bcm: bcm2835-power: Bypass power_on/off() calls

[Nicolas Saenz Julienne]

Bypass power_on/power_off() when running on BCM2711 as they are not
needed.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
---
 drivers/soc/bcm/bcm2835-power.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/soc/bcm/bcm2835-power.c b/drivers/soc/bcm/bcm2835-power.c
index 42e105758b47..e9c425419174 100644
--- a/drivers/soc/bcm/bcm2835-power.c
+++ b/drivers/soc/bcm/bcm2835-power.c
@@ -197,6 +197,10 @@ static int bcm2835_power_power_off(struct bcm2835_power_domain *pd, u32 pm_reg)
 {
 	struct bcm2835_power *power = pd->power;
 
+	/* We don't run this on BCM2711 */
+	if (power->argon_asb)
+		return 0;
+
 	/* Enable functional isolation */
 	PM_WRITE(pm_reg, PM_READ(pm_reg) & ~PM_ISFUNC);
 
@@ -218,6 +222,10 @@ static int bcm2835_power_power_on(struct bcm2835_power_domain *pd, u32 pm_reg)
 	int inrush;
 	bool powok;
 
+	/* We don't run this on BCM2711 */
+	if (power->argon_asb)
+		return 0;
+
 	/* If it was already powered on by the fw, leave it that way. */
 	if (PM_READ(pm_reg) & PM_POWUP)
 		return 0;
-- 
2.30.0


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[RFC/PATCH v2 11/16] dt-bindings: gpu: v3d: Add BCM2711's compatible

[Nicolas Saenz Julienne]

BCM2711, Raspberry Pi 4's SoC, contains a V3D core. So add its specific
compatible to the bindings.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
---
 Documentation/devicetree/bindings/gpu/brcm,bcm-v3d.yaml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/gpu/brcm,bcm-v3d.yaml b/Documentation/devicetree/bindings/gpu/brcm,bcm-v3d.yaml
index 9d72264fa90a..8401385bb33c 100644
--- a/Documentation/devicetree/bindings/gpu/brcm,bcm-v3d.yaml
+++ b/Documentation/devicetree/bindings/gpu/brcm,bcm-v3d.yaml
@@ -18,6 +18,7 @@ properties:
     enum:
       - brcm,7268-v3d
       - brcm,7278-v3d
+      - brcm,bcm2711-v3d
 
   reg:
     items:
-- 
2.30.0

[RFC/PATCH v2 11/16] dt-bindings: gpu: v3d: Add BCM2711's compatible

[Nicolas Saenz Julienne]

BCM2711, Raspberry Pi 4's SoC, contains a V3D core. So add its specific
compatible to the bindings.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
---
 Documentation/devicetree/bindings/gpu/brcm,bcm-v3d.yaml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/gpu/brcm,bcm-v3d.yaml b/Documentation/devicetree/bindings/gpu/brcm,bcm-v3d.yaml
index 9d72264fa90a..8401385bb33c 100644
--- a/Documentation/devicetree/bindings/gpu/brcm,bcm-v3d.yaml
+++ b/Documentation/devicetree/bindings/gpu/brcm,bcm-v3d.yaml
@@ -18,6 +18,7 @@ properties:
     enum:
       - brcm,7268-v3d
       - brcm,7278-v3d
+      - brcm,bcm2711-v3d
 
   reg:
     items:
-- 
2.30.0


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

[RFC/PATCH v2 11/16] dt-bindings: gpu: v3d: Add BCM2711's compatible

[Nicolas Saenz Julienne]

BCM2711, Raspberry Pi 4's SoC, contains a V3D core. So add its specific
compatible to the bindings.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
---
 Documentation/devicetree/bindings/gpu/brcm,bcm-v3d.yaml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/gpu/brcm,bcm-v3d.yaml b/Documentation/devicetree/bindings/gpu/brcm,bcm-v3d.yaml
index 9d72264fa90a..8401385bb33c 100644
--- a/Documentation/devicetree/bindings/gpu/brcm,bcm-v3d.yaml
+++ b/Documentation/devicetree/bindings/gpu/brcm,bcm-v3d.yaml
@@ -18,6 +18,7 @@ properties:
     enum:
       - brcm,7268-v3d
       - brcm,7278-v3d
+      - brcm,bcm2711-v3d
 
   reg:
     items:
-- 
2.30.0

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[RFC/PATCH v2 12/16] drm/v3d: Get rid of pm code

[Nicolas Saenz Julienne]

Runtime PM doesn't seem to work correctly on this driver. On top of
that, commit 8b6864e3e138 ("drm/v3d/v3d_drv: Remove unused static
variable 'v3d_v3d_pm_ops'") hints that it most likely never did as the
driver's PM ops were not hooked-up.

So, in order to support regular operation with V3D on BCM2711 (Raspberry
Pi 4), get rid of the PM code. PM will be reinstated once we figure out
the underlying issues.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
---
 drivers/gpu/drm/v3d/v3d_debugfs.c | 18 +-----------------
 drivers/gpu/drm/v3d/v3d_drv.c     | 11 -----------
 drivers/gpu/drm/v3d/v3d_gem.c     |  9 ---------
 3 files changed, 1 insertion(+), 37 deletions(-)

diff --git a/drivers/gpu/drm/v3d/v3d_debugfs.c b/drivers/gpu/drm/v3d/v3d_debugfs.c
index e76b24bb8828..e1d5f3423059 100644
--- a/drivers/gpu/drm/v3d/v3d_debugfs.c
+++ b/drivers/gpu/drm/v3d/v3d_debugfs.c
@@ -4,7 +4,6 @@
 #include <linux/circ_buf.h>
 #include <linux/ctype.h>
 #include <linux/debugfs.h>
-#include <linux/pm_runtime.h>
 #include <linux/seq_file.h>
 
 #include <drm/drm_debugfs.h>
@@ -130,11 +129,7 @@ static int v3d_v3d_debugfs_ident(struct seq_file *m, void *unused)
 	struct drm_device *dev = node->minor->dev;
 	struct v3d_dev *v3d = to_v3d_dev(dev);
 	u32 ident0, ident1, ident2, ident3, cores;
-	int ret, core;
-
-	ret = pm_runtime_get_sync(v3d->drm.dev);
-	if (ret < 0)
-		return ret;
+	int core;
 
 	ident0 = V3D_READ(V3D_HUB_IDENT0);
 	ident1 = V3D_READ(V3D_HUB_IDENT1);
@@ -187,9 +182,6 @@ static int v3d_v3d_debugfs_ident(struct seq_file *m, void *unused)
 			   (misccfg & V3D_MISCCFG_OVRTMUOUT) != 0);
 	}
 
-	pm_runtime_mark_last_busy(v3d->drm.dev);
-	pm_runtime_put_autosuspend(v3d->drm.dev);
-
 	return 0;
 }
 
@@ -217,11 +209,6 @@ static int v3d_measure_clock(struct seq_file *m, void *unused)
 	uint32_t cycles;
 	int core = 0;
 	int measure_ms = 1000;
-	int ret;
-
-	ret = pm_runtime_get_sync(v3d->drm.dev);
-	if (ret < 0)
-		return ret;
 
 	if (v3d->ver >= 40) {
 		V3D_CORE_WRITE(core, V3D_V4_PCTR_0_SRC_0_3,
@@ -245,9 +232,6 @@ static int v3d_measure_clock(struct seq_file *m, void *unused)
 		   cycles / (measure_ms * 1000),
 		   (cycles / (measure_ms * 100)) % 10);
 
-	pm_runtime_mark_last_busy(v3d->drm.dev);
-	pm_runtime_put_autosuspend(v3d->drm.dev);
-
 	return 0;
 }
 
diff --git a/drivers/gpu/drm/v3d/v3d_drv.c b/drivers/gpu/drm/v3d/v3d_drv.c
index 99e22beea90b..7a3336443a12 100644
--- a/drivers/gpu/drm/v3d/v3d_drv.c
+++ b/drivers/gpu/drm/v3d/v3d_drv.c
@@ -19,7 +19,6 @@
 #include <linux/module.h>
 #include <linux/of_platform.h>
 #include <linux/platform_device.h>
-#include <linux/pm_runtime.h>
 #include <linux/reset.h>
 
 #include <drm/drm_drv.h>
@@ -43,7 +42,6 @@ static int v3d_get_param_ioctl(struct drm_device *dev, void *data,
 {
 	struct v3d_dev *v3d = to_v3d_dev(dev);
 	struct drm_v3d_get_param *args = data;
-	int ret;
 	static const u32 reg_map[] = {
 		[DRM_V3D_PARAM_V3D_UIFCFG] = V3D_HUB_UIFCFG,
 		[DRM_V3D_PARAM_V3D_HUB_IDENT1] = V3D_HUB_IDENT1,
@@ -69,17 +67,12 @@ static int v3d_get_param_ioctl(struct drm_device *dev, void *data,
 		if (args->value != 0)
 			return -EINVAL;
 
-		ret = pm_runtime_get_sync(v3d->drm.dev);
-		if (ret < 0)
-			return ret;
 		if (args->param >= DRM_V3D_PARAM_V3D_CORE0_IDENT0 &&
 		    args->param <= DRM_V3D_PARAM_V3D_CORE0_IDENT2) {
 			args->value = V3D_CORE_READ(0, offset);
 		} else {
 			args->value = V3D_READ(offset);
 		}
-		pm_runtime_mark_last_busy(v3d->drm.dev);
-		pm_runtime_put_autosuspend(v3d->drm.dev);
 		return 0;
 	}
 
@@ -271,10 +264,6 @@ static int v3d_platform_drm_probe(struct platform_device *pdev)
 		return -ENOMEM;
 	}
 
-	pm_runtime_use_autosuspend(dev);
-	pm_runtime_set_autosuspend_delay(dev, 50);
-	pm_runtime_enable(dev);
-
 	ret = v3d_gem_init(drm);
 	if (ret)
 		goto dma_free;
diff --git a/drivers/gpu/drm/v3d/v3d_gem.c b/drivers/gpu/drm/v3d/v3d_gem.c
index 4eb354226972..75582b03470b 100644
--- a/drivers/gpu/drm/v3d/v3d_gem.c
+++ b/drivers/gpu/drm/v3d/v3d_gem.c
@@ -6,7 +6,6 @@
 #include <linux/io.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
-#include <linux/pm_runtime.h>
 #include <linux/reset.h>
 #include <linux/sched/signal.h>
 #include <linux/uaccess.h>
@@ -372,9 +371,6 @@ v3d_job_free(struct kref *ref)
 	dma_fence_put(job->irq_fence);
 	dma_fence_put(job->done_fence);
 
-	pm_runtime_mark_last_busy(job->v3d->drm.dev);
-	pm_runtime_put_autosuspend(job->v3d->drm.dev);
-
 	kfree(job);
 }
 
@@ -441,10 +437,6 @@ v3d_job_init(struct v3d_dev *v3d, struct drm_file *file_priv,
 	job->v3d = v3d;
 	job->free = free;
 
-	ret = pm_runtime_get_sync(v3d->drm.dev);
-	if (ret < 0)
-		return ret;
-
 	xa_init_flags(&job->deps, XA_FLAGS_ALLOC);
 
 	ret = drm_syncobj_find_fence(file_priv, in_sync, 0, 0, &in_fence);
@@ -460,7 +452,6 @@ v3d_job_init(struct v3d_dev *v3d, struct drm_file *file_priv,
 	return 0;
 fail:
 	xa_destroy(&job->deps);
-	pm_runtime_put_autosuspend(v3d->drm.dev);
 	return ret;
 }
 
-- 
2.30.0

[RFC/PATCH v2 12/16] drm/v3d: Get rid of pm code

[Nicolas Saenz Julienne]

Runtime PM doesn't seem to work correctly on this driver. On top of
that, commit 8b6864e3e138 ("drm/v3d/v3d_drv: Remove unused static
variable 'v3d_v3d_pm_ops'") hints that it most likely never did as the
driver's PM ops were not hooked-up.

So, in order to support regular operation with V3D on BCM2711 (Raspberry
Pi 4), get rid of the PM code. PM will be reinstated once we figure out
the underlying issues.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
---
 drivers/gpu/drm/v3d/v3d_debugfs.c | 18 +-----------------
 drivers/gpu/drm/v3d/v3d_drv.c     | 11 -----------
 drivers/gpu/drm/v3d/v3d_gem.c     |  9 ---------
 3 files changed, 1 insertion(+), 37 deletions(-)

diff --git a/drivers/gpu/drm/v3d/v3d_debugfs.c b/drivers/gpu/drm/v3d/v3d_debugfs.c
index e76b24bb8828..e1d5f3423059 100644
--- a/drivers/gpu/drm/v3d/v3d_debugfs.c
+++ b/drivers/gpu/drm/v3d/v3d_debugfs.c
@@ -4,7 +4,6 @@
 #include <linux/circ_buf.h>
 #include <linux/ctype.h>
 #include <linux/debugfs.h>
-#include <linux/pm_runtime.h>
 #include <linux/seq_file.h>
 
 #include <drm/drm_debugfs.h>
@@ -130,11 +129,7 @@ static int v3d_v3d_debugfs_ident(struct seq_file *m, void *unused)
 	struct drm_device *dev = node->minor->dev;
 	struct v3d_dev *v3d = to_v3d_dev(dev);
 	u32 ident0, ident1, ident2, ident3, cores;
-	int ret, core;
-
-	ret = pm_runtime_get_sync(v3d->drm.dev);
-	if (ret < 0)
-		return ret;
+	int core;
 
 	ident0 = V3D_READ(V3D_HUB_IDENT0);
 	ident1 = V3D_READ(V3D_HUB_IDENT1);
@@ -187,9 +182,6 @@ static int v3d_v3d_debugfs_ident(struct seq_file *m, void *unused)
 			   (misccfg & V3D_MISCCFG_OVRTMUOUT) != 0);
 	}
 
-	pm_runtime_mark_last_busy(v3d->drm.dev);
-	pm_runtime_put_autosuspend(v3d->drm.dev);
-
 	return 0;
 }
 
@@ -217,11 +209,6 @@ static int v3d_measure_clock(struct seq_file *m, void *unused)
 	uint32_t cycles;
 	int core = 0;
 	int measure_ms = 1000;
-	int ret;
-
-	ret = pm_runtime_get_sync(v3d->drm.dev);
-	if (ret < 0)
-		return ret;
 
 	if (v3d->ver >= 40) {
 		V3D_CORE_WRITE(core, V3D_V4_PCTR_0_SRC_0_3,
@@ -245,9 +232,6 @@ static int v3d_measure_clock(struct seq_file *m, void *unused)
 		   cycles / (measure_ms * 1000),
 		   (cycles / (measure_ms * 100)) % 10);
 
-	pm_runtime_mark_last_busy(v3d->drm.dev);
-	pm_runtime_put_autosuspend(v3d->drm.dev);
-
 	return 0;
 }
 
diff --git a/drivers/gpu/drm/v3d/v3d_drv.c b/drivers/gpu/drm/v3d/v3d_drv.c
index 99e22beea90b..7a3336443a12 100644
--- a/drivers/gpu/drm/v3d/v3d_drv.c
+++ b/drivers/gpu/drm/v3d/v3d_drv.c
@@ -19,7 +19,6 @@
 #include <linux/module.h>
 #include <linux/of_platform.h>
 #include <linux/platform_device.h>
-#include <linux/pm_runtime.h>
 #include <linux/reset.h>
 
 #include <drm/drm_drv.h>
@@ -43,7 +42,6 @@ static int v3d_get_param_ioctl(struct drm_device *dev, void *data,
 {
 	struct v3d_dev *v3d = to_v3d_dev(dev);
 	struct drm_v3d_get_param *args = data;
-	int ret;
 	static const u32 reg_map[] = {
 		[DRM_V3D_PARAM_V3D_UIFCFG] = V3D_HUB_UIFCFG,
 		[DRM_V3D_PARAM_V3D_HUB_IDENT1] = V3D_HUB_IDENT1,
@@ -69,17 +67,12 @@ static int v3d_get_param_ioctl(struct drm_device *dev, void *data,
 		if (args->value != 0)
 			return -EINVAL;
 
-		ret = pm_runtime_get_sync(v3d->drm.dev);
-		if (ret < 0)
-			return ret;
 		if (args->param >= DRM_V3D_PARAM_V3D_CORE0_IDENT0 &&
 		    args->param <= DRM_V3D_PARAM_V3D_CORE0_IDENT2) {
 			args->value = V3D_CORE_READ(0, offset);
 		} else {
 			args->value = V3D_READ(offset);
 		}
-		pm_runtime_mark_last_busy(v3d->drm.dev);
-		pm_runtime_put_autosuspend(v3d->drm.dev);
 		return 0;
 	}
 
@@ -271,10 +264,6 @@ static int v3d_platform_drm_probe(struct platform_device *pdev)
 		return -ENOMEM;
 	}
 
-	pm_runtime_use_autosuspend(dev);
-	pm_runtime_set_autosuspend_delay(dev, 50);
-	pm_runtime_enable(dev);
-
 	ret = v3d_gem_init(drm);
 	if (ret)
 		goto dma_free;
diff --git a/drivers/gpu/drm/v3d/v3d_gem.c b/drivers/gpu/drm/v3d/v3d_gem.c
index 4eb354226972..75582b03470b 100644
--- a/drivers/gpu/drm/v3d/v3d_gem.c
+++ b/drivers/gpu/drm/v3d/v3d_gem.c
@@ -6,7 +6,6 @@
 #include <linux/io.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
-#include <linux/pm_runtime.h>
 #include <linux/reset.h>
 #include <linux/sched/signal.h>
 #include <linux/uaccess.h>
@@ -372,9 +371,6 @@ v3d_job_free(struct kref *ref)
 	dma_fence_put(job->irq_fence);
 	dma_fence_put(job->done_fence);
 
-	pm_runtime_mark_last_busy(job->v3d->drm.dev);
-	pm_runtime_put_autosuspend(job->v3d->drm.dev);
-
 	kfree(job);
 }
 
@@ -441,10 +437,6 @@ v3d_job_init(struct v3d_dev *v3d, struct drm_file *file_priv,
 	job->v3d = v3d;
 	job->free = free;
 
-	ret = pm_runtime_get_sync(v3d->drm.dev);
-	if (ret < 0)
-		return ret;
-
 	xa_init_flags(&job->deps, XA_FLAGS_ALLOC);
 
 	ret = drm_syncobj_find_fence(file_priv, in_sync, 0, 0, &in_fence);
@@ -460,7 +452,6 @@ v3d_job_init(struct v3d_dev *v3d, struct drm_file *file_priv,
 	return 0;
 fail:
 	xa_destroy(&job->deps);
-	pm_runtime_put_autosuspend(v3d->drm.dev);
 	return ret;
 }
 
-- 
2.30.0


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

[RFC/PATCH v2 12/16] drm/v3d: Get rid of pm code

[Nicolas Saenz Julienne]

Runtime PM doesn't seem to work correctly on this driver. On top of
that, commit 8b6864e3e138 ("drm/v3d/v3d_drv: Remove unused static
variable 'v3d_v3d_pm_ops'") hints that it most likely never did as the
driver's PM ops were not hooked-up.

So, in order to support regular operation with V3D on BCM2711 (Raspberry
Pi 4), get rid of the PM code. PM will be reinstated once we figure out
the underlying issues.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
---
 drivers/gpu/drm/v3d/v3d_debugfs.c | 18 +-----------------
 drivers/gpu/drm/v3d/v3d_drv.c     | 11 -----------
 drivers/gpu/drm/v3d/v3d_gem.c     |  9 ---------
 3 files changed, 1 insertion(+), 37 deletions(-)

diff --git a/drivers/gpu/drm/v3d/v3d_debugfs.c b/drivers/gpu/drm/v3d/v3d_debugfs.c
index e76b24bb8828..e1d5f3423059 100644
--- a/drivers/gpu/drm/v3d/v3d_debugfs.c
+++ b/drivers/gpu/drm/v3d/v3d_debugfs.c
@@ -4,7 +4,6 @@
 #include <linux/circ_buf.h>
 #include <linux/ctype.h>
 #include <linux/debugfs.h>
-#include <linux/pm_runtime.h>
 #include <linux/seq_file.h>
 
 #include <drm/drm_debugfs.h>
@@ -130,11 +129,7 @@ static int v3d_v3d_debugfs_ident(struct seq_file *m, void *unused)
 	struct drm_device *dev = node->minor->dev;
 	struct v3d_dev *v3d = to_v3d_dev(dev);
 	u32 ident0, ident1, ident2, ident3, cores;
-	int ret, core;
-
-	ret = pm_runtime_get_sync(v3d->drm.dev);
-	if (ret < 0)
-		return ret;
+	int core;
 
 	ident0 = V3D_READ(V3D_HUB_IDENT0);
 	ident1 = V3D_READ(V3D_HUB_IDENT1);
@@ -187,9 +182,6 @@ static int v3d_v3d_debugfs_ident(struct seq_file *m, void *unused)
 			   (misccfg & V3D_MISCCFG_OVRTMUOUT) != 0);
 	}
 
-	pm_runtime_mark_last_busy(v3d->drm.dev);
-	pm_runtime_put_autosuspend(v3d->drm.dev);
-
 	return 0;
 }
 
@@ -217,11 +209,6 @@ static int v3d_measure_clock(struct seq_file *m, void *unused)
 	uint32_t cycles;
 	int core = 0;
 	int measure_ms = 1000;
-	int ret;
-
-	ret = pm_runtime_get_sync(v3d->drm.dev);
-	if (ret < 0)
-		return ret;
 
 	if (v3d->ver >= 40) {
 		V3D_CORE_WRITE(core, V3D_V4_PCTR_0_SRC_0_3,
@@ -245,9 +232,6 @@ static int v3d_measure_clock(struct seq_file *m, void *unused)
 		   cycles / (measure_ms * 1000),
 		   (cycles / (measure_ms * 100)) % 10);
 
-	pm_runtime_mark_last_busy(v3d->drm.dev);
-	pm_runtime_put_autosuspend(v3d->drm.dev);
-
 	return 0;
 }
 
diff --git a/drivers/gpu/drm/v3d/v3d_drv.c b/drivers/gpu/drm/v3d/v3d_drv.c
index 99e22beea90b..7a3336443a12 100644
--- a/drivers/gpu/drm/v3d/v3d_drv.c
+++ b/drivers/gpu/drm/v3d/v3d_drv.c
@@ -19,7 +19,6 @@
 #include <linux/module.h>
 #include <linux/of_platform.h>
 #include <linux/platform_device.h>
-#include <linux/pm_runtime.h>
 #include <linux/reset.h>
 
 #include <drm/drm_drv.h>
@@ -43,7 +42,6 @@ static int v3d_get_param_ioctl(struct drm_device *dev, void *data,
 {
 	struct v3d_dev *v3d = to_v3d_dev(dev);
 	struct drm_v3d_get_param *args = data;
-	int ret;
 	static const u32 reg_map[] = {
 		[DRM_V3D_PARAM_V3D_UIFCFG] = V3D_HUB_UIFCFG,
 		[DRM_V3D_PARAM_V3D_HUB_IDENT1] = V3D_HUB_IDENT1,
@@ -69,17 +67,12 @@ static int v3d_get_param_ioctl(struct drm_device *dev, void *data,
 		if (args->value != 0)
 			return -EINVAL;
 
-		ret = pm_runtime_get_sync(v3d->drm.dev);
-		if (ret < 0)
-			return ret;
 		if (args->param >= DRM_V3D_PARAM_V3D_CORE0_IDENT0 &&
 		    args->param <= DRM_V3D_PARAM_V3D_CORE0_IDENT2) {
 			args->value = V3D_CORE_READ(0, offset);
 		} else {
 			args->value = V3D_READ(offset);
 		}
-		pm_runtime_mark_last_busy(v3d->drm.dev);
-		pm_runtime_put_autosuspend(v3d->drm.dev);
 		return 0;
 	}
 
@@ -271,10 +264,6 @@ static int v3d_platform_drm_probe(struct platform_device *pdev)
 		return -ENOMEM;
 	}
 
-	pm_runtime_use_autosuspend(dev);
-	pm_runtime_set_autosuspend_delay(dev, 50);
-	pm_runtime_enable(dev);
-
 	ret = v3d_gem_init(drm);
 	if (ret)
 		goto dma_free;
diff --git a/drivers/gpu/drm/v3d/v3d_gem.c b/drivers/gpu/drm/v3d/v3d_gem.c
index 4eb354226972..75582b03470b 100644
--- a/drivers/gpu/drm/v3d/v3d_gem.c
+++ b/drivers/gpu/drm/v3d/v3d_gem.c
@@ -6,7 +6,6 @@
 #include <linux/io.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
-#include <linux/pm_runtime.h>
 #include <linux/reset.h>
 #include <linux/sched/signal.h>
 #include <linux/uaccess.h>
@@ -372,9 +371,6 @@ v3d_job_free(struct kref *ref)
 	dma_fence_put(job->irq_fence);
 	dma_fence_put(job->done_fence);
 
-	pm_runtime_mark_last_busy(job->v3d->drm.dev);
-	pm_runtime_put_autosuspend(job->v3d->drm.dev);
-
 	kfree(job);
 }
 
@@ -441,10 +437,6 @@ v3d_job_init(struct v3d_dev *v3d, struct drm_file *file_priv,
 	job->v3d = v3d;
 	job->free = free;
 
-	ret = pm_runtime_get_sync(v3d->drm.dev);
-	if (ret < 0)
-		return ret;
-
 	xa_init_flags(&job->deps, XA_FLAGS_ALLOC);
 
 	ret = drm_syncobj_find_fence(file_priv, in_sync, 0, 0, &in_fence);
@@ -460,7 +452,6 @@ v3d_job_init(struct v3d_dev *v3d, struct drm_file *file_priv,
 	return 0;
 fail:
 	xa_destroy(&job->deps);
-	pm_runtime_put_autosuspend(v3d->drm.dev);
 	return ret;
 }
 
-- 
2.30.0

_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel

[RFC/PATCH v2 13/16] drm/v3d: Add support for bcm2711

[Nicolas Saenz Julienne]

Add compatible string and Kconfig options for bcm2711.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
---
 drivers/gpu/drm/v3d/Kconfig   | 2 +-
 drivers/gpu/drm/v3d/v3d_drv.c | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/v3d/Kconfig b/drivers/gpu/drm/v3d/Kconfig
index 9a5c44606337..b0e048697964 100644
--- a/drivers/gpu/drm/v3d/Kconfig
+++ b/drivers/gpu/drm/v3d/Kconfig
@@ -1,7 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0-only
 config DRM_V3D
 	tristate "Broadcom V3D 3.x and newer"
-	depends on ARCH_BCM || ARCH_BCMSTB || COMPILE_TEST
+	depends on ARCH_BCM || ARCH_BCMSTB || ARCH_BCM2835 || COMPILE_TEST
 	depends on DRM
 	depends on COMMON_CLK
 	depends on MMU
diff --git a/drivers/gpu/drm/v3d/v3d_drv.c b/drivers/gpu/drm/v3d/v3d_drv.c
index 7a3336443a12..1504b6f84441 100644
--- a/drivers/gpu/drm/v3d/v3d_drv.c
+++ b/drivers/gpu/drm/v3d/v3d_drv.c
@@ -184,6 +184,7 @@ static const struct drm_driver v3d_drm_driver = {
 static const struct of_device_id v3d_of_match[] = {
 	{ .compatible = "brcm,7268-v3d" },
 	{ .compatible = "brcm,7278-v3d" },
+	{ .compatible = "brcm,bcm2711-v3d" },
 	{},
 };
 MODULE_DEVICE_TABLE(of, v3d_of_match);
-- 
2.30.0

[RFC/PATCH v2 13/16] drm/v3d: Add support for bcm2711

[Nicolas Saenz Julienne]

Add compatible string and Kconfig options for bcm2711.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
---
 drivers/gpu/drm/v3d/Kconfig   | 2 +-
 drivers/gpu/drm/v3d/v3d_drv.c | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/v3d/Kconfig b/drivers/gpu/drm/v3d/Kconfig
index 9a5c44606337..b0e048697964 100644
--- a/drivers/gpu/drm/v3d/Kconfig
+++ b/drivers/gpu/drm/v3d/Kconfig
@@ -1,7 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0-only
 config DRM_V3D
 	tristate "Broadcom V3D 3.x and newer"
-	depends on ARCH_BCM || ARCH_BCMSTB || COMPILE_TEST
+	depends on ARCH_BCM || ARCH_BCMSTB || ARCH_BCM2835 || COMPILE_TEST
 	depends on DRM
 	depends on COMMON_CLK
 	depends on MMU
diff --git a/drivers/gpu/drm/v3d/v3d_drv.c b/drivers/gpu/drm/v3d/v3d_drv.c
index 7a3336443a12..1504b6f84441 100644
--- a/drivers/gpu/drm/v3d/v3d_drv.c
+++ b/drivers/gpu/drm/v3d/v3d_drv.c
@@ -184,6 +184,7 @@ static const struct drm_driver v3d_drm_driver = {
 static const struct of_device_id v3d_of_match[] = {
 	{ .compatible = "brcm,7268-v3d" },
 	{ .compatible = "brcm,7278-v3d" },
+	{ .compatible = "brcm,bcm2711-v3d" },
 	{},
 };
 MODULE_DEVICE_TABLE(of, v3d_of_match);
-- 
2.30.0


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

[RFC/PATCH v2 13/16] drm/v3d: Add support for bcm2711

[Nicolas Saenz Julienne]

Add compatible string and Kconfig options for bcm2711.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
---
 drivers/gpu/drm/v3d/Kconfig   | 2 +-
 drivers/gpu/drm/v3d/v3d_drv.c | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/v3d/Kconfig b/drivers/gpu/drm/v3d/Kconfig
index 9a5c44606337..b0e048697964 100644
--- a/drivers/gpu/drm/v3d/Kconfig
+++ b/drivers/gpu/drm/v3d/Kconfig
@@ -1,7 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0-only
 config DRM_V3D
 	tristate "Broadcom V3D 3.x and newer"
-	depends on ARCH_BCM || ARCH_BCMSTB || COMPILE_TEST
+	depends on ARCH_BCM || ARCH_BCMSTB || ARCH_BCM2835 || COMPILE_TEST
 	depends on DRM
 	depends on COMMON_CLK
 	depends on MMU
diff --git a/drivers/gpu/drm/v3d/v3d_drv.c b/drivers/gpu/drm/v3d/v3d_drv.c
index 7a3336443a12..1504b6f84441 100644
--- a/drivers/gpu/drm/v3d/v3d_drv.c
+++ b/drivers/gpu/drm/v3d/v3d_drv.c
@@ -184,6 +184,7 @@ static const struct drm_driver v3d_drm_driver = {
 static const struct of_device_id v3d_of_match[] = {
 	{ .compatible = "brcm,7268-v3d" },
 	{ .compatible = "brcm,7278-v3d" },
+	{ .compatible = "brcm,bcm2711-v3d" },
 	{},
 };
 MODULE_DEVICE_TABLE(of, v3d_of_match);
-- 
2.30.0

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[RFC/PATCH v2 14/16] ARM: dts: bcm2711: Enable V3D

[Nicolas Saenz Julienne]

This enables V3D for bcm2711 (used in the Raspberry Pi 4).

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>

---

Changes since v1:
 - Correct node's name address

 arch/arm/boot/dts/bcm2711.dtsi | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/arch/arm/boot/dts/bcm2711.dtsi b/arch/arm/boot/dts/bcm2711.dtsi
index 5026cfc72a2b..db7ef32ad87d 100644
--- a/arch/arm/boot/dts/bcm2711.dtsi
+++ b/arch/arm/boot/dts/bcm2711.dtsi
@@ -549,6 +549,18 @@ genet_mdio: mdio@e14 {
 				#size-cells = <0x1>;
 			};
 		};
+
+		v3d: gpu@7ec00000 {
+			compatible = "brcm,bcm2711-v3d";
+			reg = <0x0 0x7ec00000 0x4000>,
+			      <0x0 0x7ec04000 0x4000>;
+			reg-names = "hub", "core0";
+
+			power-domains = <&pm BCM2835_POWER_DOMAIN_GRAFX_V3D>;
+			resets = <&pm BCM2835_RESET_V3D>;
+			clocks = <&firmware_clocks 5>;
+			interrupts = <GIC_SPI 74 IRQ_TYPE_LEVEL_HIGH>;
+		};
 	};
 };
 
-- 
2.30.0

[RFC/PATCH v2 14/16] ARM: dts: bcm2711: Enable V3D

[Nicolas Saenz Julienne]

This enables V3D for bcm2711 (used in the Raspberry Pi 4).

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>

---

Changes since v1:
 - Correct node's name address

 arch/arm/boot/dts/bcm2711.dtsi | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/arch/arm/boot/dts/bcm2711.dtsi b/arch/arm/boot/dts/bcm2711.dtsi
index 5026cfc72a2b..db7ef32ad87d 100644
--- a/arch/arm/boot/dts/bcm2711.dtsi
+++ b/arch/arm/boot/dts/bcm2711.dtsi
@@ -549,6 +549,18 @@ genet_mdio: mdio@e14 {
 				#size-cells = <0x1>;
 			};
 		};
+
+		v3d: gpu@7ec00000 {
+			compatible = "brcm,bcm2711-v3d";
+			reg = <0x0 0x7ec00000 0x4000>,
+			      <0x0 0x7ec04000 0x4000>;
+			reg-names = "hub", "core0";
+
+			power-domains = <&pm BCM2835_POWER_DOMAIN_GRAFX_V3D>;
+			resets = <&pm BCM2835_RESET_V3D>;
+			clocks = <&firmware_clocks 5>;
+			interrupts = <GIC_SPI 74 IRQ_TYPE_LEVEL_HIGH>;
+		};
 	};
 };
 
-- 
2.30.0


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[RFC/PATCH v2 15/16] ARM: configs: Enable DRM_V3D

[Nicolas Saenz Julienne]

BCM2711, the SoC used on the Raspberry Pi 4 has a different GPU than its
predecessors. Enable it.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
---
 arch/arm/configs/multi_v7_defconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/configs/multi_v7_defconfig b/arch/arm/configs/multi_v7_defconfig
index 3823da605430..0ad4ffe4e6f6 100644
--- a/arch/arm/configs/multi_v7_defconfig
+++ b/arch/arm/configs/multi_v7_defconfig
@@ -713,6 +713,7 @@ CONFIG_DRM_TOSHIBA_TC358764=m
 CONFIG_DRM_I2C_ADV7511=m
 CONFIG_DRM_I2C_ADV7511_AUDIO=y
 CONFIG_DRM_STI=m
+CONFIG_DRM_V3D=m
 CONFIG_DRM_VC4=m
 CONFIG_DRM_ETNAVIV=m
 CONFIG_DRM_MXSFB=m
-- 
2.30.0

[RFC/PATCH v2 15/16] ARM: configs: Enable DRM_V3D

[Nicolas Saenz Julienne]

BCM2711, the SoC used on the Raspberry Pi 4 has a different GPU than its
predecessors. Enable it.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
---
 arch/arm/configs/multi_v7_defconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/configs/multi_v7_defconfig b/arch/arm/configs/multi_v7_defconfig
index 3823da605430..0ad4ffe4e6f6 100644
--- a/arch/arm/configs/multi_v7_defconfig
+++ b/arch/arm/configs/multi_v7_defconfig
@@ -713,6 +713,7 @@ CONFIG_DRM_TOSHIBA_TC358764=m
 CONFIG_DRM_I2C_ADV7511=m
 CONFIG_DRM_I2C_ADV7511_AUDIO=y
 CONFIG_DRM_STI=m
+CONFIG_DRM_V3D=m
 CONFIG_DRM_VC4=m
 CONFIG_DRM_ETNAVIV=m
 CONFIG_DRM_MXSFB=m
-- 
2.30.0


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http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

[RFC/PATCH v2 16/16] arm64: config: Enable DRM_V3D

[Nicolas Saenz Julienne]

BCM2711, the SoC used on the Raspberry Pi 4 has a different GPU than its
predecessors. Enable it.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
---
 arch/arm64/configs/defconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig
index 38c9e921f50e..cbcbe72fbd56 100644
--- a/arch/arm64/configs/defconfig
+++ b/arch/arm64/configs/defconfig
@@ -699,6 +699,7 @@ CONFIG_DRM_I2C_ADV7511_AUDIO=y
 CONFIG_DRM_DW_HDMI_AHB_AUDIO=m
 CONFIG_DRM_DW_HDMI_CEC=m
 CONFIG_DRM_IMX_DCSS=m
+CONFIG_DRM_V3D=m
 CONFIG_DRM_VC4=m
 CONFIG_DRM_ETNAVIV=m
 CONFIG_DRM_HISI_HIBMC=m
-- 
2.30.0

[RFC/PATCH v2 16/16] arm64: config: Enable DRM_V3D

[Nicolas Saenz Julienne]

BCM2711, the SoC used on the Raspberry Pi 4 has a different GPU than its
predecessors. Enable it.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
---
 arch/arm64/configs/defconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig
index 38c9e921f50e..cbcbe72fbd56 100644
--- a/arch/arm64/configs/defconfig
+++ b/arch/arm64/configs/defconfig
@@ -699,6 +699,7 @@ CONFIG_DRM_I2C_ADV7511_AUDIO=y
 CONFIG_DRM_DW_HDMI_AHB_AUDIO=m
 CONFIG_DRM_DW_HDMI_CEC=m
 CONFIG_DRM_IMX_DCSS=m
+CONFIG_DRM_V3D=m
 CONFIG_DRM_VC4=m
 CONFIG_DRM_ETNAVIV=m
 CONFIG_DRM_HISI_HIBMC=m
-- 
2.30.0


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Re: [RFC/PATCH v2 09/16] soc: bcm: bcm2835-power: Add support for BCM2711's Argon ASB

[Phil Elwell]

Hi Nicolas,

On Tue, 9 Feb 2021 at 13:00, Nicolas Saenz Julienne
<nsaenzjulienne@suse.de> wrote:
>
> In BCM2711 the new ARGON ASB took over V3D. The old ASB is still present
> with the ISP and H264 bits, and V3D is in the same place in the new ASB
> as the old one.
>
> Use the fact that 'pm->argon_asb' is populated as a hint that we're on
> BCM2711. On top of that introduce the macro ASB_BASE() which will select
> the correct ASB register base, based on whether we're trying to access
> V3D and which platform we're on.

Please don't refer to this block as ARGON - it is the IP of Raspberry
Pi Trading and it's name is RPiVid.

> Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
>
> ---
>
> Changes since v1:
>  - Correct names
>
>  drivers/soc/bcm/bcm2835-power.c | 68 ++++++++++++++++++++-------------
>  1 file changed, 42 insertions(+), 26 deletions(-)
>
> diff --git a/drivers/soc/bcm/bcm2835-power.c b/drivers/soc/bcm/bcm2835-power.c
> index 59b8abfc5617..42e105758b47 100644
> --- a/drivers/soc/bcm/bcm2835-power.c
> +++ b/drivers/soc/bcm/bcm2835-power.c
> @@ -126,8 +126,9 @@
>
>  #define ASB_AXI_BRDG_ID                        0x20
>
> -#define ASB_READ(reg) readl(power->rpivid_asb + (reg))
> -#define ASB_WRITE(reg, val) writel(PM_PASSWORD | (val), power->rpivid_asb + (reg))
> +#define ASB_BASE(is_v3d) (is_v3d && power->argon_asb ? power->argon_asb : power->rpivid_asb)
> +#define ASB_READ(reg, is_v3d) readl(ASB_BASE(is_v3d) + (reg))
> +#define ASB_WRITE(reg, val, is_v3d) writel(PM_PASSWORD | (val), ASB_BASE(is_v3d) + (reg))
>
>  struct bcm2835_power_domain {
>         struct generic_pm_domain base;
> @@ -142,13 +143,16 @@ struct bcm2835_power {
>         void __iomem            *base;
>         /* RPiVid bridge registers. */
>         void __iomem            *rpivid_asb;
> +       /* Argon bridge registers. */
> +       void __iomem            *argon_asb;
>
>         struct genpd_onecell_data pd_xlate;
>         struct bcm2835_power_domain domains[BCM2835_POWER_DOMAIN_COUNT];
>         struct reset_controller_dev reset;
>  };
>
> -static int bcm2835_asb_enable(struct bcm2835_power *power, u32 reg)
> +static int bcm2835_asb_enable(struct bcm2835_power *power, u32 reg,
> +                             bool is_v3d)
>  {
>         u64 start;
>
> @@ -158,8 +162,8 @@ static int bcm2835_asb_enable(struct bcm2835_power *power, u32 reg)
>         start = ktime_get_ns();
>
>         /* Enable the module's async AXI bridges. */
> -       ASB_WRITE(reg, ASB_READ(reg) & ~ASB_REQ_STOP);
> -       while (ASB_READ(reg) & ASB_ACK) {
> +       ASB_WRITE(reg, ASB_READ(reg, is_v3d) & ~ASB_REQ_STOP, is_v3d);
> +       while (ASB_READ(reg, is_v3d) & ASB_ACK) {
>                 cpu_relax();
>                 if (ktime_get_ns() - start >= 1000)
>                         return -ETIMEDOUT;
> @@ -168,7 +172,8 @@ static int bcm2835_asb_enable(struct bcm2835_power *power, u32 reg)
>         return 0;
>  }
>
> -static int bcm2835_asb_disable(struct bcm2835_power *power, u32 reg)
> +static int bcm2835_asb_disable(struct bcm2835_power *power, u32 reg,
> +                              bool is_v3d)
>  {
>         u64 start;
>
> @@ -178,8 +183,8 @@ static int bcm2835_asb_disable(struct bcm2835_power *power, u32 reg)
>         start = ktime_get_ns();
>
>         /* Enable the module's async AXI bridges. */
> -       ASB_WRITE(reg, ASB_READ(reg) | ASB_REQ_STOP);
> -       while (!(ASB_READ(reg) & ASB_ACK)) {
> +       ASB_WRITE(reg, ASB_READ(reg, is_v3d) | ASB_REQ_STOP, is_v3d);
> +       while (!(ASB_READ(reg, is_v3d) & ASB_ACK)) {
>                 cpu_relax();
>                 if (ktime_get_ns() - start >= 1000)
>                         return -ETIMEDOUT;
> @@ -274,7 +279,8 @@ static int bcm2835_asb_power_on(struct bcm2835_power_domain *pd,
>                                 u32 pm_reg,
>                                 u32 asb_m_reg,
>                                 u32 asb_s_reg,
> -                               u32 reset_flags)
> +                               u32 reset_flags,
> +                               bool is_v3d)
>  {
>         struct bcm2835_power *power = pd->power;
>         int ret;
> @@ -301,13 +307,13 @@ static int bcm2835_asb_power_on(struct bcm2835_power_domain *pd,
>                 goto err_enable_resets;
>         }
>
> -       ret = bcm2835_asb_enable(power, asb_m_reg);
> +       ret = bcm2835_asb_enable(power, asb_m_reg, is_v3d);
>         if (ret) {
>                 dev_err(power->dev, "Failed to enable ASB master for %s\n",
>                         pd->base.name);
>                 goto err_disable_clk;
>         }
> -       ret = bcm2835_asb_enable(power, asb_s_reg);
> +       ret = bcm2835_asb_enable(power, asb_s_reg, is_v3d);
>         if (ret) {
>                 dev_err(power->dev, "Failed to enable ASB slave for %s\n",
>                         pd->base.name);
> @@ -317,7 +323,7 @@ static int bcm2835_asb_power_on(struct bcm2835_power_domain *pd,
>         return 0;
>
>  err_disable_asb_master:
> -       bcm2835_asb_disable(power, asb_m_reg);
> +       bcm2835_asb_disable(power, asb_m_reg, is_v3d);
>  err_disable_clk:
>         clk_disable_unprepare(pd->clk);
>  err_enable_resets:
> @@ -329,22 +335,23 @@ static int bcm2835_asb_power_off(struct bcm2835_power_domain *pd,
>                                  u32 pm_reg,
>                                  u32 asb_m_reg,
>                                  u32 asb_s_reg,
> -                                u32 reset_flags)
> +                                u32 reset_flags,
> +                                bool is_v3d)
>  {
>         struct bcm2835_power *power = pd->power;
>         int ret;
>
> -       ret = bcm2835_asb_disable(power, asb_s_reg);
> +       ret = bcm2835_asb_disable(power, asb_s_reg, is_v3d);
>         if (ret) {
>                 dev_warn(power->dev, "Failed to disable ASB slave for %s\n",
>                          pd->base.name);
>                 return ret;
>         }
> -       ret = bcm2835_asb_disable(power, asb_m_reg);
> +       ret = bcm2835_asb_disable(power, asb_m_reg, is_v3d);
>         if (ret) {
>                 dev_warn(power->dev, "Failed to disable ASB master for %s\n",
>                          pd->base.name);
> -               bcm2835_asb_enable(power, asb_s_reg);
> +               bcm2835_asb_enable(power, asb_s_reg, is_v3d);
>                 return ret;
>         }
>
> @@ -369,7 +376,7 @@ static int bcm2835_power_pd_power_on(struct generic_pm_domain *domain)
>         case BCM2835_POWER_DOMAIN_GRAFX_V3D:
>                 return bcm2835_asb_power_on(pd, PM_GRAFX,
>                                             ASB_V3D_M_CTRL, ASB_V3D_S_CTRL,
> -                                           PM_V3DRSTN);
> +                                           PM_V3DRSTN, true);
>
>         case BCM2835_POWER_DOMAIN_IMAGE:
>                 return bcm2835_power_power_on(pd, PM_IMAGE);
> @@ -377,17 +384,17 @@ static int bcm2835_power_pd_power_on(struct generic_pm_domain *domain)
>         case BCM2835_POWER_DOMAIN_IMAGE_PERI:
>                 return bcm2835_asb_power_on(pd, PM_IMAGE,
>                                             0, 0,
> -                                           PM_PERIRSTN);
> +                                           PM_PERIRSTN, false);
>
>         case BCM2835_POWER_DOMAIN_IMAGE_ISP:
>                 return bcm2835_asb_power_on(pd, PM_IMAGE,
>                                             ASB_ISP_M_CTRL, ASB_ISP_S_CTRL,
> -                                           PM_ISPRSTN);
> +                                           PM_ISPRSTN, false);
>
>         case BCM2835_POWER_DOMAIN_IMAGE_H264:
>                 return bcm2835_asb_power_on(pd, PM_IMAGE,
>                                             ASB_H264_M_CTRL, ASB_H264_S_CTRL,
> -                                           PM_H264RSTN);
> +                                           PM_H264RSTN, false);
>
>         case BCM2835_POWER_DOMAIN_USB:
>                 PM_WRITE(PM_USB, PM_USB_CTRLEN);
> @@ -435,7 +442,7 @@ static int bcm2835_power_pd_power_off(struct generic_pm_domain *domain)
>         case BCM2835_POWER_DOMAIN_GRAFX_V3D:
>                 return bcm2835_asb_power_off(pd, PM_GRAFX,
>                                              ASB_V3D_M_CTRL, ASB_V3D_S_CTRL,
> -                                            PM_V3DRSTN);
> +                                            PM_V3DRSTN, true);
>
>         case BCM2835_POWER_DOMAIN_IMAGE:
>                 return bcm2835_power_power_off(pd, PM_IMAGE);
> @@ -443,17 +450,17 @@ static int bcm2835_power_pd_power_off(struct generic_pm_domain *domain)
>         case BCM2835_POWER_DOMAIN_IMAGE_PERI:
>                 return bcm2835_asb_power_off(pd, PM_IMAGE,
>                                              0, 0,
> -                                            PM_PERIRSTN);
> +                                            PM_PERIRSTN, false);
>
>         case BCM2835_POWER_DOMAIN_IMAGE_ISP:
>                 return bcm2835_asb_power_off(pd, PM_IMAGE,
>                                              ASB_ISP_M_CTRL, ASB_ISP_S_CTRL,
> -                                            PM_ISPRSTN);
> +                                            PM_ISPRSTN, false);
>
>         case BCM2835_POWER_DOMAIN_IMAGE_H264:
>                 return bcm2835_asb_power_off(pd, PM_IMAGE,
>                                              ASB_H264_M_CTRL, ASB_H264_S_CTRL,
> -                                            PM_H264RSTN);
> +                                            PM_H264RSTN, false);
>
>         case BCM2835_POWER_DOMAIN_USB:
>                 PM_WRITE(PM_USB, 0);
> @@ -626,13 +633,22 @@ static int bcm2835_power_probe(struct platform_device *pdev)
>         power->dev = dev;
>         power->base = pm->base;
>         power->rpivid_asb = pm->rpivid_asb;
> +       power->argon_asb = pm->argon_asb;
>
> -       id = ASB_READ(ASB_AXI_BRDG_ID);
> +       id = ASB_READ(ASB_AXI_BRDG_ID, false);
>         if (id != 0x62726467 /* "BRDG" */) {
> -               dev_err(dev, "ASB register ID returned 0x%08x\n", id);
> +               dev_err(dev, "RPiVid ASB register ID returned 0x%08x\n", id);
>                 return -ENODEV;
>         }
>
> +       if (pm->argon_asb) {
> +               id = ASB_READ(ASB_AXI_BRDG_ID, true);
> +               if (id != 0x62726467 /* "BRDG" */) {
> +                       dev_err(dev, "Argon ASB register ID returned 0x%08x\n", id);
> +                       return -ENODEV;
> +               }
> +       }
> +

Surely these are the same register. Is this the result of a bad merge?

Thanks,

Phil

Re: [RFC/PATCH v2 09/16] soc: bcm: bcm2835-power: Add support for BCM2711's Argon ASB

[Phil Elwell]

Hi Nicolas,

On Tue, 9 Feb 2021 at 13:00, Nicolas Saenz Julienne
<nsaenzjulienne@suse.de> wrote:
>
> In BCM2711 the new ARGON ASB took over V3D. The old ASB is still present
> with the ISP and H264 bits, and V3D is in the same place in the new ASB
> as the old one.
>
> Use the fact that 'pm->argon_asb' is populated as a hint that we're on
> BCM2711. On top of that introduce the macro ASB_BASE() which will select
> the correct ASB register base, based on whether we're trying to access
> V3D and which platform we're on.

Please don't refer to this block as ARGON - it is the IP of Raspberry
Pi Trading and it's name is RPiVid.

> Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
>
> ---
>
> Changes since v1:
>  - Correct names
>
>  drivers/soc/bcm/bcm2835-power.c | 68 ++++++++++++++++++++-------------
>  1 file changed, 42 insertions(+), 26 deletions(-)
>
> diff --git a/drivers/soc/bcm/bcm2835-power.c b/drivers/soc/bcm/bcm2835-power.c
> index 59b8abfc5617..42e105758b47 100644
> --- a/drivers/soc/bcm/bcm2835-power.c
> +++ b/drivers/soc/bcm/bcm2835-power.c
> @@ -126,8 +126,9 @@
>
>  #define ASB_AXI_BRDG_ID                        0x20
>
> -#define ASB_READ(reg) readl(power->rpivid_asb + (reg))
> -#define ASB_WRITE(reg, val) writel(PM_PASSWORD | (val), power->rpivid_asb + (reg))
> +#define ASB_BASE(is_v3d) (is_v3d && power->argon_asb ? power->argon_asb : power->rpivid_asb)
> +#define ASB_READ(reg, is_v3d) readl(ASB_BASE(is_v3d) + (reg))
> +#define ASB_WRITE(reg, val, is_v3d) writel(PM_PASSWORD | (val), ASB_BASE(is_v3d) + (reg))
>
>  struct bcm2835_power_domain {
>         struct generic_pm_domain base;
> @@ -142,13 +143,16 @@ struct bcm2835_power {
>         void __iomem            *base;
>         /* RPiVid bridge registers. */
>         void __iomem            *rpivid_asb;
> +       /* Argon bridge registers. */
> +       void __iomem            *argon_asb;
>
>         struct genpd_onecell_data pd_xlate;
>         struct bcm2835_power_domain domains[BCM2835_POWER_DOMAIN_COUNT];
>         struct reset_controller_dev reset;
>  };
>
> -static int bcm2835_asb_enable(struct bcm2835_power *power, u32 reg)
> +static int bcm2835_asb_enable(struct bcm2835_power *power, u32 reg,
> +                             bool is_v3d)
>  {
>         u64 start;
>
> @@ -158,8 +162,8 @@ static int bcm2835_asb_enable(struct bcm2835_power *power, u32 reg)
>         start = ktime_get_ns();
>
>         /* Enable the module's async AXI bridges. */
> -       ASB_WRITE(reg, ASB_READ(reg) & ~ASB_REQ_STOP);
> -       while (ASB_READ(reg) & ASB_ACK) {
> +       ASB_WRITE(reg, ASB_READ(reg, is_v3d) & ~ASB_REQ_STOP, is_v3d);
> +       while (ASB_READ(reg, is_v3d) & ASB_ACK) {
>                 cpu_relax();
>                 if (ktime_get_ns() - start >= 1000)
>                         return -ETIMEDOUT;
> @@ -168,7 +172,8 @@ static int bcm2835_asb_enable(struct bcm2835_power *power, u32 reg)
>         return 0;
>  }
>
> -static int bcm2835_asb_disable(struct bcm2835_power *power, u32 reg)
> +static int bcm2835_asb_disable(struct bcm2835_power *power, u32 reg,
> +                              bool is_v3d)
>  {
>         u64 start;
>
> @@ -178,8 +183,8 @@ static int bcm2835_asb_disable(struct bcm2835_power *power, u32 reg)
>         start = ktime_get_ns();
>
>         /* Enable the module's async AXI bridges. */
> -       ASB_WRITE(reg, ASB_READ(reg) | ASB_REQ_STOP);
> -       while (!(ASB_READ(reg) & ASB_ACK)) {
> +       ASB_WRITE(reg, ASB_READ(reg, is_v3d) | ASB_REQ_STOP, is_v3d);
> +       while (!(ASB_READ(reg, is_v3d) & ASB_ACK)) {
>                 cpu_relax();
>                 if (ktime_get_ns() - start >= 1000)
>                         return -ETIMEDOUT;
> @@ -274,7 +279,8 @@ static int bcm2835_asb_power_on(struct bcm2835_power_domain *pd,
>                                 u32 pm_reg,
>                                 u32 asb_m_reg,
>                                 u32 asb_s_reg,
> -                               u32 reset_flags)
> +                               u32 reset_flags,
> +                               bool is_v3d)
>  {
>         struct bcm2835_power *power = pd->power;
>         int ret;
> @@ -301,13 +307,13 @@ static int bcm2835_asb_power_on(struct bcm2835_power_domain *pd,
>                 goto err_enable_resets;
>         }
>
> -       ret = bcm2835_asb_enable(power, asb_m_reg);
> +       ret = bcm2835_asb_enable(power, asb_m_reg, is_v3d);
>         if (ret) {
>                 dev_err(power->dev, "Failed to enable ASB master for %s\n",
>                         pd->base.name);
>                 goto err_disable_clk;
>         }
> -       ret = bcm2835_asb_enable(power, asb_s_reg);
> +       ret = bcm2835_asb_enable(power, asb_s_reg, is_v3d);
>         if (ret) {
>                 dev_err(power->dev, "Failed to enable ASB slave for %s\n",
>                         pd->base.name);
> @@ -317,7 +323,7 @@ static int bcm2835_asb_power_on(struct bcm2835_power_domain *pd,
>         return 0;
>
>  err_disable_asb_master:
> -       bcm2835_asb_disable(power, asb_m_reg);
> +       bcm2835_asb_disable(power, asb_m_reg, is_v3d);
>  err_disable_clk:
>         clk_disable_unprepare(pd->clk);
>  err_enable_resets:
> @@ -329,22 +335,23 @@ static int bcm2835_asb_power_off(struct bcm2835_power_domain *pd,
>                                  u32 pm_reg,
>                                  u32 asb_m_reg,
>                                  u32 asb_s_reg,
> -                                u32 reset_flags)
> +                                u32 reset_flags,
> +                                bool is_v3d)
>  {
>         struct bcm2835_power *power = pd->power;
>         int ret;
>
> -       ret = bcm2835_asb_disable(power, asb_s_reg);
> +       ret = bcm2835_asb_disable(power, asb_s_reg, is_v3d);
>         if (ret) {
>                 dev_warn(power->dev, "Failed to disable ASB slave for %s\n",
>                          pd->base.name);
>                 return ret;
>         }
> -       ret = bcm2835_asb_disable(power, asb_m_reg);
> +       ret = bcm2835_asb_disable(power, asb_m_reg, is_v3d);
>         if (ret) {
>                 dev_warn(power->dev, "Failed to disable ASB master for %s\n",
>                          pd->base.name);
> -               bcm2835_asb_enable(power, asb_s_reg);
> +               bcm2835_asb_enable(power, asb_s_reg, is_v3d);
>                 return ret;
>         }
>
> @@ -369,7 +376,7 @@ static int bcm2835_power_pd_power_on(struct generic_pm_domain *domain)
>         case BCM2835_POWER_DOMAIN_GRAFX_V3D:
>                 return bcm2835_asb_power_on(pd, PM_GRAFX,
>                                             ASB_V3D_M_CTRL, ASB_V3D_S_CTRL,
> -                                           PM_V3DRSTN);
> +                                           PM_V3DRSTN, true);
>
>         case BCM2835_POWER_DOMAIN_IMAGE:
>                 return bcm2835_power_power_on(pd, PM_IMAGE);
> @@ -377,17 +384,17 @@ static int bcm2835_power_pd_power_on(struct generic_pm_domain *domain)
>         case BCM2835_POWER_DOMAIN_IMAGE_PERI:
>                 return bcm2835_asb_power_on(pd, PM_IMAGE,
>                                             0, 0,
> -                                           PM_PERIRSTN);
> +                                           PM_PERIRSTN, false);
>
>         case BCM2835_POWER_DOMAIN_IMAGE_ISP:
>                 return bcm2835_asb_power_on(pd, PM_IMAGE,
>                                             ASB_ISP_M_CTRL, ASB_ISP_S_CTRL,
> -                                           PM_ISPRSTN);
> +                                           PM_ISPRSTN, false);
>
>         case BCM2835_POWER_DOMAIN_IMAGE_H264:
>                 return bcm2835_asb_power_on(pd, PM_IMAGE,
>                                             ASB_H264_M_CTRL, ASB_H264_S_CTRL,
> -                                           PM_H264RSTN);
> +                                           PM_H264RSTN, false);
>
>         case BCM2835_POWER_DOMAIN_USB:
>                 PM_WRITE(PM_USB, PM_USB_CTRLEN);
> @@ -435,7 +442,7 @@ static int bcm2835_power_pd_power_off(struct generic_pm_domain *domain)
>         case BCM2835_POWER_DOMAIN_GRAFX_V3D:
>                 return bcm2835_asb_power_off(pd, PM_GRAFX,
>                                              ASB_V3D_M_CTRL, ASB_V3D_S_CTRL,
> -                                            PM_V3DRSTN);
> +                                            PM_V3DRSTN, true);
>
>         case BCM2835_POWER_DOMAIN_IMAGE:
>                 return bcm2835_power_power_off(pd, PM_IMAGE);
> @@ -443,17 +450,17 @@ static int bcm2835_power_pd_power_off(struct generic_pm_domain *domain)
>         case BCM2835_POWER_DOMAIN_IMAGE_PERI:
>                 return bcm2835_asb_power_off(pd, PM_IMAGE,
>                                              0, 0,
> -                                            PM_PERIRSTN);
> +                                            PM_PERIRSTN, false);
>
>         case BCM2835_POWER_DOMAIN_IMAGE_ISP:
>                 return bcm2835_asb_power_off(pd, PM_IMAGE,
>                                              ASB_ISP_M_CTRL, ASB_ISP_S_CTRL,
> -                                            PM_ISPRSTN);
> +                                            PM_ISPRSTN, false);
>
>         case BCM2835_POWER_DOMAIN_IMAGE_H264:
>                 return bcm2835_asb_power_off(pd, PM_IMAGE,
>                                              ASB_H264_M_CTRL, ASB_H264_S_CTRL,
> -                                            PM_H264RSTN);
> +                                            PM_H264RSTN, false);
>
>         case BCM2835_POWER_DOMAIN_USB:
>                 PM_WRITE(PM_USB, 0);
> @@ -626,13 +633,22 @@ static int bcm2835_power_probe(struct platform_device *pdev)
>         power->dev = dev;
>         power->base = pm->base;
>         power->rpivid_asb = pm->rpivid_asb;
> +       power->argon_asb = pm->argon_asb;
>
> -       id = ASB_READ(ASB_AXI_BRDG_ID);
> +       id = ASB_READ(ASB_AXI_BRDG_ID, false);
>         if (id != 0x62726467 /* "BRDG" */) {
> -               dev_err(dev, "ASB register ID returned 0x%08x\n", id);
> +               dev_err(dev, "RPiVid ASB register ID returned 0x%08x\n", id);
>                 return -ENODEV;
>         }
>
> +       if (pm->argon_asb) {
> +               id = ASB_READ(ASB_AXI_BRDG_ID, true);
> +               if (id != 0x62726467 /* "BRDG" */) {
> +                       dev_err(dev, "Argon ASB register ID returned 0x%08x\n", id);
> +                       return -ENODEV;
> +               }
> +       }
> +

Surely these are the same register. Is this the result of a bad merge?

Thanks,

Phil

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Re: [RFC/PATCH v2 09/16] soc: bcm: bcm2835-power: Add support for BCM2711's Argon ASB

[Nicolas Saenz Julienne]

[-- Attachment #1: Type: text/plain, Size: 2735 bytes --]

On Tue, 2021-02-09 at 13:19 +0000, Phil Elwell wrote:
> Hi Nicolas,
> 
> On Tue, 9 Feb 2021 at 13:00, Nicolas Saenz Julienne
> <nsaenzjulienne@suse.de> wrote:
> > 
> > In BCM2711 the new ARGON ASB took over V3D. The old ASB is still present
> > with the ISP and H264 bits, and V3D is in the same place in the new ASB
> > as the old one.
> > 
> > Use the fact that 'pm->argon_asb' is populated as a hint that we're on
> > BCM2711. On top of that introduce the macro ASB_BASE() which will select
> > the correct ASB register base, based on whether we're trying to access
> > V3D and which platform we're on.
> 
> Please don't refer to this block as ARGON - it is the IP of Raspberry
> Pi Trading and it's name is RPiVid.

OK, sorry for that. I, again, mixed both ASB names. I'll rename the Argon ASB
to RPiVid. How should I call the one present in older RPis?

> > Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
> > 
> > ---
> > 
> > Changes since v1:
> >  - Correct names
> > 
> >  drivers/soc/bcm/bcm2835-power.c | 68 ++++++++++++++++++++-------------
> >  1 file changed, 42 insertions(+), 26 deletions(-)
> > 
> > diff --git a/drivers/soc/bcm/bcm2835-power.c b/drivers/soc/bcm/bcm2835-power.c
> > index 59b8abfc5617..42e105758b47 100644
> > --- a/drivers/soc/bcm/bcm2835-power.c

[...]

> >         case BCM2835_POWER_DOMAIN_USB:
> >                 PM_WRITE(PM_USB, 0);
> > @@ -626,13 +633,22 @@ static int bcm2835_power_probe(struct platform_device *pdev)
> >         power->dev = dev;
> >         power->base = pm->base;
> >         power->rpivid_asb = pm->rpivid_asb;
> > +       power->argon_asb = pm->argon_asb;
> > 
> > -       id = ASB_READ(ASB_AXI_BRDG_ID);
> > +       id = ASB_READ(ASB_AXI_BRDG_ID, false);
> >         if (id != 0x62726467 /* "BRDG" */) {
> > -               dev_err(dev, "ASB register ID returned 0x%08x\n", id);
> > +               dev_err(dev, "RPiVid ASB register ID returned 0x%08x\n", id);
> >                 return -ENODEV;
> >         }
> > 
> > +       if (pm->argon_asb) {
> > +               id = ASB_READ(ASB_AXI_BRDG_ID, true);
> > +               if (id != 0x62726467 /* "BRDG" */) {
> > +                       dev_err(dev, "Argon ASB register ID returned 0x%08x\n", id);
> > +                       return -ENODEV;
> > +               }
> > +       }
> > +
>
> Surely these are the same register. Is this the result of a bad merge?

AFAIU There are two ASBs the old one at 0x7e00a000 and the new RPiVid one at
0x7ec11000. They both can be checked for valid IDs. Note the new argument in
ASB_READ().

Regards,
Nicolas


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Re: [RFC/PATCH v2 09/16] soc: bcm: bcm2835-power: Add support for BCM2711's Argon ASB

[Nicolas Saenz Julienne]

[-- Attachment #1.1: Type: text/plain, Size: 2735 bytes --]

On Tue, 2021-02-09 at 13:19 +0000, Phil Elwell wrote:
> Hi Nicolas,
> 
> On Tue, 9 Feb 2021 at 13:00, Nicolas Saenz Julienne
> <nsaenzjulienne@suse.de> wrote:
> > 
> > In BCM2711 the new ARGON ASB took over V3D. The old ASB is still present
> > with the ISP and H264 bits, and V3D is in the same place in the new ASB
> > as the old one.
> > 
> > Use the fact that 'pm->argon_asb' is populated as a hint that we're on
> > BCM2711. On top of that introduce the macro ASB_BASE() which will select
> > the correct ASB register base, based on whether we're trying to access
> > V3D and which platform we're on.
> 
> Please don't refer to this block as ARGON - it is the IP of Raspberry
> Pi Trading and it's name is RPiVid.

OK, sorry for that. I, again, mixed both ASB names. I'll rename the Argon ASB
to RPiVid. How should I call the one present in older RPis?

> > Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
> > 
> > ---
> > 
> > Changes since v1:
> >  - Correct names
> > 
> >  drivers/soc/bcm/bcm2835-power.c | 68 ++++++++++++++++++++-------------
> >  1 file changed, 42 insertions(+), 26 deletions(-)
> > 
> > diff --git a/drivers/soc/bcm/bcm2835-power.c b/drivers/soc/bcm/bcm2835-power.c
> > index 59b8abfc5617..42e105758b47 100644
> > --- a/drivers/soc/bcm/bcm2835-power.c

[...]

> >         case BCM2835_POWER_DOMAIN_USB:
> >                 PM_WRITE(PM_USB, 0);
> > @@ -626,13 +633,22 @@ static int bcm2835_power_probe(struct platform_device *pdev)
> >         power->dev = dev;
> >         power->base = pm->base;
> >         power->rpivid_asb = pm->rpivid_asb;
> > +       power->argon_asb = pm->argon_asb;
> > 
> > -       id = ASB_READ(ASB_AXI_BRDG_ID);
> > +       id = ASB_READ(ASB_AXI_BRDG_ID, false);
> >         if (id != 0x62726467 /* "BRDG" */) {
> > -               dev_err(dev, "ASB register ID returned 0x%08x\n", id);
> > +               dev_err(dev, "RPiVid ASB register ID returned 0x%08x\n", id);
> >                 return -ENODEV;
> >         }
> > 
> > +       if (pm->argon_asb) {
> > +               id = ASB_READ(ASB_AXI_BRDG_ID, true);
> > +               if (id != 0x62726467 /* "BRDG" */) {
> > +                       dev_err(dev, "Argon ASB register ID returned 0x%08x\n", id);
> > +                       return -ENODEV;
> > +               }
> > +       }
> > +
>
> Surely these are the same register. Is this the result of a bad merge?

AFAIU There are two ASBs the old one at 0x7e00a000 and the new RPiVid one at
0x7ec11000. They both can be checked for valid IDs. Note the new argument in
ASB_READ().

Regards,
Nicolas


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Re: [RFC/PATCH v2 09/16] soc: bcm: bcm2835-power: Add support for BCM2711's Argon ASB

[Phil Elwell]

Nicolas,


On Tue, 9 Feb 2021 at 14:00, Nicolas Saenz Julienne
<nsaenzjulienne@suse.de> wrote:
>
> On Tue, 2021-02-09 at 13:19 +0000, Phil Elwell wrote:
> > Hi Nicolas,
> >
> > On Tue, 9 Feb 2021 at 13:00, Nicolas Saenz Julienne
> > <nsaenzjulienne@suse.de> wrote:
> > >
> > > In BCM2711 the new ARGON ASB took over V3D. The old ASB is still present
> > > with the ISP and H264 bits, and V3D is in the same place in the new ASB
> > > as the old one.
> > >
> > > Use the fact that 'pm->argon_asb' is populated as a hint that we're on
> > > BCM2711. On top of that introduce the macro ASB_BASE() which will select
> > > the correct ASB register base, based on whether we're trying to access
> > > V3D and which platform we're on.
> >
> > Please don't refer to this block as ARGON - it is the IP of Raspberry
> > Pi Trading and it's name is RPiVid.
>
> OK, sorry for that. I, again, mixed both ASB names. I'll rename the Argon ASB
> to RPiVid. How should I call the one present in older RPis?

It can keep its unqualified name of ASB_*.

>
> > > Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
> > >
> > > ---
> > >
> > > Changes since v1:
> > >  - Correct names
> > >
> > >  drivers/soc/bcm/bcm2835-power.c | 68 ++++++++++++++++++++-------------
> > >  1 file changed, 42 insertions(+), 26 deletions(-)
> > >
> > > diff --git a/drivers/soc/bcm/bcm2835-power.c b/drivers/soc/bcm/bcm2835-power.c
> > > index 59b8abfc5617..42e105758b47 100644
> > > --- a/drivers/soc/bcm/bcm2835-power.c
>
> [...]
>
> > >         case BCM2835_POWER_DOMAIN_USB:
> > >                 PM_WRITE(PM_USB, 0);
> > > @@ -626,13 +633,22 @@ static int bcm2835_power_probe(struct platform_device *pdev)
> > >         power->dev = dev;
> > >         power->base = pm->base;
> > >         power->rpivid_asb = pm->rpivid_asb;
> > > +       power->argon_asb = pm->argon_asb;
> > >
> > > -       id = ASB_READ(ASB_AXI_BRDG_ID);
> > > +       id = ASB_READ(ASB_AXI_BRDG_ID, false);
> > >         if (id != 0x62726467 /* "BRDG" */) {
> > > -               dev_err(dev, "ASB register ID returned 0x%08x\n", id);
> > > +               dev_err(dev, "RPiVid ASB register ID returned 0x%08x\n", id);
> > >                 return -ENODEV;
> > >         }
> > >
> > > +       if (pm->argon_asb) {
> > > +               id = ASB_READ(ASB_AXI_BRDG_ID, true);
> > > +               if (id != 0x62726467 /* "BRDG" */) {
> > > +                       dev_err(dev, "Argon ASB register ID returned 0x%08x\n", id);
> > > +                       return -ENODEV;
> > > +               }
> > > +       }
> > > +
> >
> > Surely these are the same register. Is this the result of a bad merge?
>
> AFAIU There are two ASBs the old one at 0x7e00a000 and the new RPiVid one at
> 0x7ec11000. They both can be checked for valid IDs. Note the new argument in
> ASB_READ().

You're right - I'd missed the parameter. Apologies.

Phil

Re: [RFC/PATCH v2 09/16] soc: bcm: bcm2835-power: Add support for BCM2711's Argon ASB

[Phil Elwell]

Nicolas,


On Tue, 9 Feb 2021 at 14:00, Nicolas Saenz Julienne
<nsaenzjulienne@suse.de> wrote:
>
> On Tue, 2021-02-09 at 13:19 +0000, Phil Elwell wrote:
> > Hi Nicolas,
> >
> > On Tue, 9 Feb 2021 at 13:00, Nicolas Saenz Julienne
> > <nsaenzjulienne@suse.de> wrote:
> > >
> > > In BCM2711 the new ARGON ASB took over V3D. The old ASB is still present
> > > with the ISP and H264 bits, and V3D is in the same place in the new ASB
> > > as the old one.
> > >
> > > Use the fact that 'pm->argon_asb' is populated as a hint that we're on
> > > BCM2711. On top of that introduce the macro ASB_BASE() which will select
> > > the correct ASB register base, based on whether we're trying to access
> > > V3D and which platform we're on.
> >
> > Please don't refer to this block as ARGON - it is the IP of Raspberry
> > Pi Trading and it's name is RPiVid.
>
> OK, sorry for that. I, again, mixed both ASB names. I'll rename the Argon ASB
> to RPiVid. How should I call the one present in older RPis?

It can keep its unqualified name of ASB_*.

>
> > > Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
> > >
> > > ---
> > >
> > > Changes since v1:
> > >  - Correct names
> > >
> > >  drivers/soc/bcm/bcm2835-power.c | 68 ++++++++++++++++++++-------------
> > >  1 file changed, 42 insertions(+), 26 deletions(-)
> > >
> > > diff --git a/drivers/soc/bcm/bcm2835-power.c b/drivers/soc/bcm/bcm2835-power.c
> > > index 59b8abfc5617..42e105758b47 100644
> > > --- a/drivers/soc/bcm/bcm2835-power.c
>
> [...]
>
> > >         case BCM2835_POWER_DOMAIN_USB:
> > >                 PM_WRITE(PM_USB, 0);
> > > @@ -626,13 +633,22 @@ static int bcm2835_power_probe(struct platform_device *pdev)
> > >         power->dev = dev;
> > >         power->base = pm->base;
> > >         power->rpivid_asb = pm->rpivid_asb;
> > > +       power->argon_asb = pm->argon_asb;
> > >
> > > -       id = ASB_READ(ASB_AXI_BRDG_ID);
> > > +       id = ASB_READ(ASB_AXI_BRDG_ID, false);
> > >         if (id != 0x62726467 /* "BRDG" */) {
> > > -               dev_err(dev, "ASB register ID returned 0x%08x\n", id);
> > > +               dev_err(dev, "RPiVid ASB register ID returned 0x%08x\n", id);
> > >                 return -ENODEV;
> > >         }
> > >
> > > +       if (pm->argon_asb) {
> > > +               id = ASB_READ(ASB_AXI_BRDG_ID, true);
> > > +               if (id != 0x62726467 /* "BRDG" */) {
> > > +                       dev_err(dev, "Argon ASB register ID returned 0x%08x\n", id);
> > > +                       return -ENODEV;
> > > +               }
> > > +       }
> > > +
> >
> > Surely these are the same register. Is this the result of a bad merge?
>
> AFAIU There are two ASBs the old one at 0x7e00a000 and the new RPiVid one at
> 0x7ec11000. They both can be checked for valid IDs. Note the new argument in
> ASB_READ().

You're right - I'd missed the parameter. Apologies.

Phil

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Re: [RFC/PATCH v2 09/16] soc: bcm: bcm2835-power: Add support for BCM2711's Argon ASB

[Nicolas Saenz Julienne]

[-- Attachment #1: Type: text/plain, Size: 445 bytes --]

Hi Phil,

On Tue, 2021-02-09 at 16:38 +0000, Phil Elwell wrote:
> Nicolas,
>
> > > Please don't refer to this block as ARGON - it is the IP of Raspberry
> > > Pi Trading and it's name is RPiVid.
> > 
> > OK, sorry for that. I, again, mixed both ASB names. I'll rename the Argon ASB
> > to RPiVid. How should I call the one present in older RPis?
> 
> It can keep its unqualified name of ASB_*.

Fair enough.

Regards,
Nicolas


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Re: [RFC/PATCH v2 09/16] soc: bcm: bcm2835-power: Add support for BCM2711's Argon ASB

[Nicolas Saenz Julienne]

[-- Attachment #1.1: Type: text/plain, Size: 445 bytes --]

Hi Phil,

On Tue, 2021-02-09 at 16:38 +0000, Phil Elwell wrote:
> Nicolas,
>
> > > Please don't refer to this block as ARGON - it is the IP of Raspberry
> > > Pi Trading and it's name is RPiVid.
> > 
> > OK, sorry for that. I, again, mixed both ASB names. I'll rename the Argon ASB
> > to RPiVid. How should I call the one present in older RPis?
> 
> It can keep its unqualified name of ASB_*.

Fair enough.

Regards,
Nicolas


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Re: [RFC/PATCH v2 01/16] dt-bindings: soc: bcm: bcm2835-pm: Convert bindings to DT schema

[Rob Herring]

On Tue, Feb 09, 2021 at 01:58:57PM +0100, Nicolas Saenz Julienne wrote:
> This converts the brcm,bcm2835-pm bindings from text to proper schema.
> 
> Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
> ---
>  .../bindings/soc/bcm/brcm,bcm2835-pm.txt      | 46 -----------
>  .../bindings/soc/bcm/brcm,bcm2835-pm.yaml     | 79 +++++++++++++++++++
>  2 files changed, 79 insertions(+), 46 deletions(-)
>  delete mode 100644 Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.txt
>  create mode 100644 Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.yaml
> 
> diff --git a/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.txt b/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.txt
> deleted file mode 100644
> index 72ff033565e5..000000000000
> --- a/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.txt
> +++ /dev/null
> @@ -1,46 +0,0 @@
> -BCM2835 PM (Power domains, watchdog)
> -
> -The PM block controls power domains and some reset lines, and includes
> -a watchdog timer.  This binding supersedes the brcm,bcm2835-pm-wdt
> -binding which covered some of PM's register range and functionality.
> -
> -Required properties:
> -
> -- compatible:		Should be "brcm,bcm2835-pm"
> -- reg:			Specifies base physical address and size of the two
> -			  register ranges ("PM" and "ASYNC_BRIDGE" in that
> -			  order)
> -- clocks:		a) v3d: The V3D clock from CPRMAN
> -			b) peri_image: The PERI_IMAGE clock from CPRMAN
> -			c) h264: The H264 clock from CPRMAN
> -			d) isp: The ISP clock from CPRMAN
> -- #reset-cells: 	Should be 1.  This property follows the reset controller
> -			  bindings[1].
> -- #power-domain-cells:	Should be 1.  This property follows the power domain
> -			  bindings[2].
> -
> -Optional properties:
> -
> -- timeout-sec:		Contains the watchdog timeout in seconds
> -- system-power-controller: Whether the watchdog is controlling the
> -    system power.  This node follows the power controller bindings[3].
> -
> -[1] Documentation/devicetree/bindings/reset/reset.txt
> -[2] Documentation/devicetree/bindings/power/power-domain.yaml
> -[3] Documentation/devicetree/bindings/power/power-controller.txt
> -
> -Example:
> -
> -pm {
> -	compatible = "brcm,bcm2835-pm", "brcm,bcm2835-pm-wdt";
> -	#power-domain-cells = <1>;
> -	#reset-cells = <1>;
> -	reg = <0x7e100000 0x114>,
> -	      <0x7e00a000 0x24>;
> -	clocks = <&clocks BCM2835_CLOCK_V3D>,
> -		 <&clocks BCM2835_CLOCK_PERI_IMAGE>,
> -		 <&clocks BCM2835_CLOCK_H264>,
> -		 <&clocks BCM2835_CLOCK_ISP>;
> -	clock-names = "v3d", "peri_image", "h264", "isp";
> -	system-power-controller;
> -};
> diff --git a/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.yaml b/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.yaml
> new file mode 100644
> index 000000000000..8bc65e5f62a7
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.yaml
> @@ -0,0 +1,79 @@
> +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
> +%YAML 1.2
> +---
> +$id: "http://devicetree.org/schemas/soc/bcm/brcm,bcm2835-pm.yaml#"
> +$schema: "http://devicetree.org/meta-schemas/core.yaml#"
> +
> +title: BCM2835 PM (Power domains, watchdog)
> +
> +description: |
> +  The PM block controls power domains and some reset lines, and includes a
> +  watchdog timer.
> +
> +maintainers:
> +  - Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
> +
> +allOf:
> +  - $ref: ../../watchdog/watchdog.yaml#
> +
> +properties:
> +  compatible:
> +    items:
> +      - enum:
> +          - brcm,bcm2835-pm
> +      - const: brcm,bcm2835-pm-wdt

Odd...

> +
> +  reg:
> +    minItems: 1
> +    maxItems: 2
> +    description: Specifies base physical address and size of the two register
> +                 ranges, "PM" and "ASYNC_BRIDGE" in that order.

The number, what they are and order are captured with:

items:
  - description: PM registers
  - description: ASYNC_BRIDGE registers

'Specifies base physical address and size' is every 'reg'.

> +
> +  "#power-domain-cells":
> +    const: 1
> +
> +  "#reset-cells":
> +    const: 1
> +
> +  clocks:
> +    minItems: 4
> +    maxItems: 4
> +
> +  clock-names:
> +    items:
> +      - const: v3d
> +      - const: peri_image
> +      - const: h264
> +      - const: isp
> +
> +  system-power-controller:
> +    type: boolean
> +
> +  timeout-sec: true
> +
> +required:
> +  - compatible
> +  - reg
> +  - "#power-domain-cells"
> +  - "#reset-cells"
> +  - clocks
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/clock/bcm2835.h>
> +
> +    watchdog@7e100000 {
> +        compatible = "brcm,bcm2835-pm", "brcm,bcm2835-pm-wdt";
> +        #power-domain-cells = <1>;
> +        #reset-cells = <1>;
> +        reg = <0x7e100000 0x114>,
> +              <0x7e00a000 0x24>;
> +        clocks = <&clocks BCM2835_CLOCK_V3D>,
> +        	 <&clocks BCM2835_CLOCK_PERI_IMAGE>,
> +        	 <&clocks BCM2835_CLOCK_H264>,
> +        	 <&clocks BCM2835_CLOCK_ISP>;
> +        clock-names = "v3d", "peri_image", "h264", "isp";
> +        system-power-controller;
> +    };
> -- 
> 2.30.0
> 

Re: [RFC/PATCH v2 01/16] dt-bindings: soc: bcm: bcm2835-pm: Convert bindings to DT schema

[Rob Herring]

On Tue, Feb 09, 2021 at 01:58:57PM +0100, Nicolas Saenz Julienne wrote:
> This converts the brcm,bcm2835-pm bindings from text to proper schema.
> 
> Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
> ---
>  .../bindings/soc/bcm/brcm,bcm2835-pm.txt      | 46 -----------
>  .../bindings/soc/bcm/brcm,bcm2835-pm.yaml     | 79 +++++++++++++++++++
>  2 files changed, 79 insertions(+), 46 deletions(-)
>  delete mode 100644 Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.txt
>  create mode 100644 Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.yaml
> 
> diff --git a/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.txt b/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.txt
> deleted file mode 100644
> index 72ff033565e5..000000000000
> --- a/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.txt
> +++ /dev/null
> @@ -1,46 +0,0 @@
> -BCM2835 PM (Power domains, watchdog)
> -
> -The PM block controls power domains and some reset lines, and includes
> -a watchdog timer.  This binding supersedes the brcm,bcm2835-pm-wdt
> -binding which covered some of PM's register range and functionality.
> -
> -Required properties:
> -
> -- compatible:		Should be "brcm,bcm2835-pm"
> -- reg:			Specifies base physical address and size of the two
> -			  register ranges ("PM" and "ASYNC_BRIDGE" in that
> -			  order)
> -- clocks:		a) v3d: The V3D clock from CPRMAN
> -			b) peri_image: The PERI_IMAGE clock from CPRMAN
> -			c) h264: The H264 clock from CPRMAN
> -			d) isp: The ISP clock from CPRMAN
> -- #reset-cells: 	Should be 1.  This property follows the reset controller
> -			  bindings[1].
> -- #power-domain-cells:	Should be 1.  This property follows the power domain
> -			  bindings[2].
> -
> -Optional properties:
> -
> -- timeout-sec:		Contains the watchdog timeout in seconds
> -- system-power-controller: Whether the watchdog is controlling the
> -    system power.  This node follows the power controller bindings[3].
> -
> -[1] Documentation/devicetree/bindings/reset/reset.txt
> -[2] Documentation/devicetree/bindings/power/power-domain.yaml
> -[3] Documentation/devicetree/bindings/power/power-controller.txt
> -
> -Example:
> -
> -pm {
> -	compatible = "brcm,bcm2835-pm", "brcm,bcm2835-pm-wdt";
> -	#power-domain-cells = <1>;
> -	#reset-cells = <1>;
> -	reg = <0x7e100000 0x114>,
> -	      <0x7e00a000 0x24>;
> -	clocks = <&clocks BCM2835_CLOCK_V3D>,
> -		 <&clocks BCM2835_CLOCK_PERI_IMAGE>,
> -		 <&clocks BCM2835_CLOCK_H264>,
> -		 <&clocks BCM2835_CLOCK_ISP>;
> -	clock-names = "v3d", "peri_image", "h264", "isp";
> -	system-power-controller;
> -};
> diff --git a/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.yaml b/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.yaml
> new file mode 100644
> index 000000000000..8bc65e5f62a7
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.yaml
> @@ -0,0 +1,79 @@
> +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
> +%YAML 1.2
> +---
> +$id: "http://devicetree.org/schemas/soc/bcm/brcm,bcm2835-pm.yaml#"
> +$schema: "http://devicetree.org/meta-schemas/core.yaml#"
> +
> +title: BCM2835 PM (Power domains, watchdog)
> +
> +description: |
> +  The PM block controls power domains and some reset lines, and includes a
> +  watchdog timer.
> +
> +maintainers:
> +  - Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
> +
> +allOf:
> +  - $ref: ../../watchdog/watchdog.yaml#
> +
> +properties:
> +  compatible:
> +    items:
> +      - enum:
> +          - brcm,bcm2835-pm
> +      - const: brcm,bcm2835-pm-wdt

Odd...

> +
> +  reg:
> +    minItems: 1
> +    maxItems: 2
> +    description: Specifies base physical address and size of the two register
> +                 ranges, "PM" and "ASYNC_BRIDGE" in that order.

The number, what they are and order are captured with:

items:
  - description: PM registers
  - description: ASYNC_BRIDGE registers

'Specifies base physical address and size' is every 'reg'.

> +
> +  "#power-domain-cells":
> +    const: 1
> +
> +  "#reset-cells":
> +    const: 1
> +
> +  clocks:
> +    minItems: 4
> +    maxItems: 4
> +
> +  clock-names:
> +    items:
> +      - const: v3d
> +      - const: peri_image
> +      - const: h264
> +      - const: isp
> +
> +  system-power-controller:
> +    type: boolean
> +
> +  timeout-sec: true
> +
> +required:
> +  - compatible
> +  - reg
> +  - "#power-domain-cells"
> +  - "#reset-cells"
> +  - clocks
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/clock/bcm2835.h>
> +
> +    watchdog@7e100000 {
> +        compatible = "brcm,bcm2835-pm", "brcm,bcm2835-pm-wdt";
> +        #power-domain-cells = <1>;
> +        #reset-cells = <1>;
> +        reg = <0x7e100000 0x114>,
> +              <0x7e00a000 0x24>;
> +        clocks = <&clocks BCM2835_CLOCK_V3D>,
> +        	 <&clocks BCM2835_CLOCK_PERI_IMAGE>,
> +        	 <&clocks BCM2835_CLOCK_H264>,
> +        	 <&clocks BCM2835_CLOCK_ISP>;
> +        clock-names = "v3d", "peri_image", "h264", "isp";
> +        system-power-controller;
> +    };
> -- 
> 2.30.0
> 

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Re: [RFC/PATCH v2 02/16] dt-bindings: soc: bcm: bcm2835-pm: Introduce reg-names

[Rob Herring]

On Tue, Feb 09, 2021 at 01:58:58PM +0100, Nicolas Saenz Julienne wrote:
> Anticipating the introduction of BCM2711, of which we'll need to support
> its new Argon ASB, introduce reg-names into bcm2835-pm's binding. This
> will help to have a consistent mapping between resources and their
> meaning.
> 
> Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
> ---
>  .../devicetree/bindings/soc/bcm/brcm,bcm2835-pm.yaml  | 11 +++++++++--
>  1 file changed, 9 insertions(+), 2 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.yaml b/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.yaml
> index 8bc65e5f62a7..1dbe3657c690 100644
> --- a/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.yaml
> +++ b/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.yaml
> @@ -26,8 +26,13 @@ properties:
>    reg:
>      minItems: 1
>      maxItems: 2
> -    description: Specifies base physical address and size of the two register
> -                 ranges, "PM" and "ASYNC_BRIDGE" in that order.

Ah, it's okay this way if you have -names. Or have items to give a bit 
more detail.

> +
> +  reg-names:
> +    minItems: 1
> +    maxItems: 2
> +    items:
> +      - const: pm
> +      - const: rpivid_asb

Not really clear how this corresponds to 'ASYNC_BRIDGE'. 'asb' I guess?

>  
>    "#power-domain-cells":
>      const: 1
> @@ -54,6 +59,7 @@ properties:
>  required:
>    - compatible
>    - reg
> +  - reg-names

You can't really make added properties required.

>    - "#power-domain-cells"
>    - "#reset-cells"
>    - clocks
> @@ -70,6 +76,7 @@ examples:
>          #reset-cells = <1>;
>          reg = <0x7e100000 0x114>,
>                <0x7e00a000 0x24>;
> +        reg-names = "pm", "rpivid_asb";
>          clocks = <&clocks BCM2835_CLOCK_V3D>,
>          	 <&clocks BCM2835_CLOCK_PERI_IMAGE>,
>          	 <&clocks BCM2835_CLOCK_H264>,
> -- 
> 2.30.0
> 

Re: [RFC/PATCH v2 02/16] dt-bindings: soc: bcm: bcm2835-pm: Introduce reg-names

[Rob Herring]

On Tue, Feb 09, 2021 at 01:58:58PM +0100, Nicolas Saenz Julienne wrote:
> Anticipating the introduction of BCM2711, of which we'll need to support
> its new Argon ASB, introduce reg-names into bcm2835-pm's binding. This
> will help to have a consistent mapping between resources and their
> meaning.
> 
> Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
> ---
>  .../devicetree/bindings/soc/bcm/brcm,bcm2835-pm.yaml  | 11 +++++++++--
>  1 file changed, 9 insertions(+), 2 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.yaml b/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.yaml
> index 8bc65e5f62a7..1dbe3657c690 100644
> --- a/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.yaml
> +++ b/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-pm.yaml
> @@ -26,8 +26,13 @@ properties:
>    reg:
>      minItems: 1
>      maxItems: 2
> -    description: Specifies base physical address and size of the two register
> -                 ranges, "PM" and "ASYNC_BRIDGE" in that order.

Ah, it's okay this way if you have -names. Or have items to give a bit 
more detail.

> +
> +  reg-names:
> +    minItems: 1
> +    maxItems: 2
> +    items:
> +      - const: pm
> +      - const: rpivid_asb

Not really clear how this corresponds to 'ASYNC_BRIDGE'. 'asb' I guess?

>  
>    "#power-domain-cells":
>      const: 1
> @@ -54,6 +59,7 @@ properties:
>  required:
>    - compatible
>    - reg
> +  - reg-names

You can't really make added properties required.

>    - "#power-domain-cells"
>    - "#reset-cells"
>    - clocks
> @@ -70,6 +76,7 @@ examples:
>          #reset-cells = <1>;
>          reg = <0x7e100000 0x114>,
>                <0x7e00a000 0x24>;
> +        reg-names = "pm", "rpivid_asb";
>          clocks = <&clocks BCM2835_CLOCK_V3D>,
>          	 <&clocks BCM2835_CLOCK_PERI_IMAGE>,
>          	 <&clocks BCM2835_CLOCK_H264>,
> -- 
> 2.30.0
> 

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Re: [RFC/PATCH v2 03/16] dt-bindings: soc: bcm: bcm2835-pm: Add support for bcm2711

[Rob Herring]

On Tue, 09 Feb 2021 13:58:59 +0100, Nicolas Saenz Julienne wrote:
> Add a new compatible string for BCM2711 and the option to provide a
> third reg property for the board's new Argon ASB.
> 
> In BCM2711 the new Argon ASB took over V3D, which is our only consumer
> of this driver so far. The old ASB is still be present with ISP and H264
> bits but no V3D.
> 
> Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
> ---
>  .../devicetree/bindings/soc/bcm/brcm,bcm2835-pm.yaml      | 8 +++++---
>  1 file changed, 5 insertions(+), 3 deletions(-)
> 

Reviewed-by: Rob Herring <robh@kernel.org>

Re: [RFC/PATCH v2 03/16] dt-bindings: soc: bcm: bcm2835-pm: Add support for bcm2711

[Rob Herring]

On Tue, 09 Feb 2021 13:58:59 +0100, Nicolas Saenz Julienne wrote:
> Add a new compatible string for BCM2711 and the option to provide a
> third reg property for the board's new Argon ASB.
> 
> In BCM2711 the new Argon ASB took over V3D, which is our only consumer
> of this driver so far. The old ASB is still be present with ISP and H264
> bits but no V3D.
> 
> Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
> ---
>  .../devicetree/bindings/soc/bcm/brcm,bcm2835-pm.yaml      | 8 +++++---
>  1 file changed, 5 insertions(+), 3 deletions(-)
> 

Reviewed-by: Rob Herring <robh@kernel.org>

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Re: [RFC/PATCH v2 11/16] dt-bindings: gpu: v3d: Add BCM2711's compatible

[Rob Herring]

On Tue, 09 Feb 2021 13:59:07 +0100, Nicolas Saenz Julienne wrote:
> BCM2711, Raspberry Pi 4's SoC, contains a V3D core. So add its specific
> compatible to the bindings.
> 
> Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
> ---
>  Documentation/devicetree/bindings/gpu/brcm,bcm-v3d.yaml | 1 +
>  1 file changed, 1 insertion(+)
> 

Acked-by: Rob Herring <robh@kernel.org>

Re: [RFC/PATCH v2 11/16] dt-bindings: gpu: v3d: Add BCM2711's compatible

[Rob Herring]

On Tue, 09 Feb 2021 13:59:07 +0100, Nicolas Saenz Julienne wrote:
> BCM2711, Raspberry Pi 4's SoC, contains a V3D core. So add its specific
> compatible to the bindings.
> 
> Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
> ---
>  Documentation/devicetree/bindings/gpu/brcm,bcm-v3d.yaml | 1 +
>  1 file changed, 1 insertion(+)
> 

Acked-by: Rob Herring <robh@kernel.org>

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Re: [RFC/PATCH v2 11/16] dt-bindings: gpu: v3d: Add BCM2711's compatible

[Rob Herring]

On Tue, 09 Feb 2021 13:59:07 +0100, Nicolas Saenz Julienne wrote:
> BCM2711, Raspberry Pi 4's SoC, contains a V3D core. So add its specific
> compatible to the bindings.
> 
> Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
> ---
>  Documentation/devicetree/bindings/gpu/brcm,bcm-v3d.yaml | 1 +
>  1 file changed, 1 insertion(+)
> 

Acked-by: Rob Herring <robh@kernel.org>
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