[PATCH v3 0/8] RZN1 USB Host support

[PATCH v3 0/8] RZN1 USB Host support

[Herve Codina]

Hi,

This series add support for the USB Host controllers available on
RZN1 (r9a06g032) SOC.

These USB Host controllers are PCI OHCI/EHCI controllers located
behind a bridge.

Regards,
Herve

Changes v2:
- Convert bindings to json-schema
- Update clocks description
- Remove unneeded '.compatible = "renesas,pci-r9a06g032"'

Changes v3:
- Remove the unneeded patch that calls clk_bulk_prepare_enable()
- Rework the device tree binding (conversion from .txt and RZ/N1 support)
- Use the RZ/N1 SOCs family only in the driver match compatible string.
- Enable PM and PM_GENERIC_DOMAIN for RZ/N1 and add the missing
  '#power-domain-cells' in sysctrl node.

Herve Codina (8):
  dt-bindings: PCI: pci-rcar-gen2: Convert bindings to json-schema
  dt-bindings: PCI: renesas,pci-rcar-gen2: Add device tree support for
    r9a06g032
  PCI: rcar-gen2: Add RZ/N1 SOCs support
  soc: renesas: rzn1: Select PM and PM_GENERIC_DOMAINS configs
  ARM: dts: r9a06g032: Add missing '#power-domain-cells'
  ARM: dts: r9a06g032: Add internal PCI bridge node
  ARM: dts: r9a06g032: Add USB PHY DT support
  ARM: dts: r9a06g032: Link the PCI USB devices to the USB PHY

 .../devicetree/bindings/pci/pci-rcar-gen2.txt |  84 --------
 .../bindings/pci/renesas,pci-rcar-gen2.yaml   | 187 ++++++++++++++++++
 arch/arm/boot/dts/r9a06g032.dtsi              |  48 +++++
 drivers/pci/controller/pci-rcar-gen2.c        |   1 +
 drivers/soc/renesas/Kconfig                   |   2 +
 5 files changed, 238 insertions(+), 84 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/pci/pci-rcar-gen2.txt
 create mode 100644 Documentation/devicetree/bindings/pci/renesas,pci-rcar-gen2.yaml

-- 
2.35.1

[PATCH v3 1/8] dt-bindings: PCI: pci-rcar-gen2: Convert bindings to json-schema

[Herve Codina]

Convert Renesas PCI bridge bindings documentation to json-schema.

Signed-off-by: Herve Codina <herve.codina@bootlin.com>
---
 .../devicetree/bindings/pci/pci-rcar-gen2.txt |  84 ----------
 .../bindings/pci/renesas,pci-rcar-gen2.yaml   | 156 ++++++++++++++++++
 2 files changed, 156 insertions(+), 84 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/pci/pci-rcar-gen2.txt
 create mode 100644 Documentation/devicetree/bindings/pci/renesas,pci-rcar-gen2.yaml

diff --git a/Documentation/devicetree/bindings/pci/pci-rcar-gen2.txt b/Documentation/devicetree/bindings/pci/pci-rcar-gen2.txt
deleted file mode 100644
index aeba38f0a387..000000000000
--- a/Documentation/devicetree/bindings/pci/pci-rcar-gen2.txt
+++ /dev/null
@@ -1,84 +0,0 @@
-Renesas AHB to PCI bridge
--------------------------
-
-This is the bridge used internally to connect the USB controllers to the
-AHB. There is one bridge instance per USB port connected to the internal
-OHCI and EHCI controllers.
-
-Required properties:
-- compatible: "renesas,pci-r8a7742" for the R8A7742 SoC;
-	      "renesas,pci-r8a7743" for the R8A7743 SoC;
-	      "renesas,pci-r8a7744" for the R8A7744 SoC;
-	      "renesas,pci-r8a7745" for the R8A7745 SoC;
-	      "renesas,pci-r8a7790" for the R8A7790 SoC;
-	      "renesas,pci-r8a7791" for the R8A7791 SoC;
-	      "renesas,pci-r8a7793" for the R8A7793 SoC;
-	      "renesas,pci-r8a7794" for the R8A7794 SoC;
-	      "renesas,pci-rcar-gen2" for a generic R-Car Gen2 or
-				      RZ/G1 compatible device.
-
-
-	      When compatible with the generic version, nodes must list the
-	      SoC-specific version corresponding to the platform first
-	      followed by the generic version.
-
-- reg:	A list of physical regions to access the device: the first is
-	the operational registers for the OHCI/EHCI controllers and the
-	second is for the bridge configuration and control registers.
-- interrupts: interrupt for the device.
-- clocks: The reference to the device clock.
-- bus-range: The PCI bus number range; as this is a single bus, the range
-	     should be specified as the same value twice.
-- #address-cells: must be 3.
-- #size-cells: must be 2.
-- #interrupt-cells: must be 1.
-- interrupt-map: standard property used to define the mapping of the PCI
-  interrupts to the GIC interrupts.
-- interrupt-map-mask: standard property that helps to define the interrupt
-  mapping.
-
-Optional properties:
-- dma-ranges: a single range for the inbound memory region. If not supplied,
-  defaults to 1GiB at 0x40000000. Note there are hardware restrictions on the
-  allowed combinations of address and size.
-
-Example SoC configuration:
-
-	pci0: pci@ee090000  {
-		compatible = "renesas,pci-r8a7790", "renesas,pci-rcar-gen2";
-		clocks = <&mstp7_clks R8A7790_CLK_EHCI>;
-		reg = <0x0 0xee090000 0x0 0xc00>,
-		      <0x0 0xee080000 0x0 0x1100>;
-		interrupts = <0 108 IRQ_TYPE_LEVEL_HIGH>;
-		status = "disabled";
-
-		bus-range = <0 0>;
-		#address-cells = <3>;
-		#size-cells = <2>;
-		#interrupt-cells = <1>;
-		dma-ranges = <0x42000000 0 0x40000000 0 0x40000000 0 0x40000000>;
-		interrupt-map-mask = <0xff00 0 0 0x7>;
-		interrupt-map = <0x0000 0 0 1 &gic 0 108 IRQ_TYPE_LEVEL_HIGH
-				 0x0800 0 0 1 &gic 0 108 IRQ_TYPE_LEVEL_HIGH
-				 0x1000 0 0 2 &gic 0 108 IRQ_TYPE_LEVEL_HIGH>;
-
-		usb@1,0 {
-			reg = <0x800 0 0 0 0>;
-			phys = <&usb0 0>;
-			phy-names = "usb";
-		};
-
-		usb@2,0 {
-			reg = <0x1000 0 0 0 0>;
-			phys = <&usb0 0>;
-			phy-names = "usb";
-		};
-	};
-
-Example board setup:
-
-&pci0 {
-	status = "okay";
-	pinctrl-0 = <&usb0_pins>;
-	pinctrl-names = "default";
-};
diff --git a/Documentation/devicetree/bindings/pci/renesas,pci-rcar-gen2.yaml b/Documentation/devicetree/bindings/pci/renesas,pci-rcar-gen2.yaml
new file mode 100644
index 000000000000..494eb975c146
--- /dev/null
+++ b/Documentation/devicetree/bindings/pci/renesas,pci-rcar-gen2.yaml
@@ -0,0 +1,156 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pci/renesas,pci-rcar-gen2.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Renesas AHB to PCI bridge
+
+maintainers:
+  - Marek Vasut <marek.vasut+renesas@gmail.com>
+  - Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
+
+description: |
+  This is the bridge used internally to connect the USB controllers to the
+  AHB. There is one bridge instance per USB port connected to the internal
+  OHCI and EHCI controllers.
+
+allOf:
+  - $ref: /schemas/pci/pci-bus.yaml#
+
+properties:
+  compatible:
+    oneOf:
+      - items:
+          - enum:
+              - renesas,pci-r8a7742      # RZ/G1H
+              - renesas,pci-r8a7743      # RZ/G1M
+              - renesas,pci-r8a7744      # RZ/G1N
+              - renesas,pci-r8a7745      # RZ/G1E
+              - renesas,pci-r8a7790      # R-Car H2
+              - renesas,pci-r8a7791      # R-Car M2-W
+              - renesas,pci-r8a7793      # R-Car M2-N
+              - renesas,pci-r8a7794      # R-Car E2
+          - const: renesas,pci-rcar-gen2 # R-Car Gen2 and RZ/G1
+
+  reg:
+    items:
+      - description: Operational registers for the OHCI/EHCI controllers.
+      - description: Bridge configuration and control registers.
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: Device clock
+
+  clock-names:
+    items:
+      - const: pclk
+
+  resets:
+    maxItems: 1
+
+  power-domains:
+    maxItems: 1
+
+  bus-range:
+    description: |
+      The PCI bus number range; as this is a single bus, the range
+      should be specified as the same value twice.
+
+  dma-ranges:
+    description: |
+      A single range for the inbound memory region. If not supplied,
+      defaults to 1GiB at 0x40000000. Note there are hardware restrictions on
+      the allowed combinations of address and size.
+    maxItems: 1
+
+patternProperties:
+  'usb@[0-1],0':
+    type: object
+
+    description:
+      This a USB controller PCI device
+
+    properties:
+      reg:
+        description:
+          Identify the correct bus, device and function number in the
+          form <bdf 0 0 0 0>.
+
+        items:
+          minItems: 5
+          maxItems: 5
+
+      phys:
+        description:
+          Reference to the USB phy
+        maxItems: 1
+
+      phy-names:
+        maxItems: 1
+
+    required:
+      - reg
+      - phys
+      - phy-names
+
+    unevaluatedProperties: false
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - interrupt-map
+  - interrupt-map-mask
+  - clocks
+  - resets
+  - power-domains
+  - bus-range
+  - "#address-cells"
+  - "#size-cells"
+  - "#interrupt-cells"
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/clock/r8a7790-cpg-mssr.h>
+    #include <dt-bindings/power/r8a7790-sysc.h>
+
+    pci@ee090000  {
+        compatible = "renesas,pci-r8a7790", "renesas,pci-rcar-gen2";
+        device_type = "pci";
+        reg = <0xee090000 0xc00>,
+              <0xee080000 0x1100>;
+        clocks = <&cpg CPG_MOD 703>;
+        power-domains = <&sysc R8A7790_PD_ALWAYS_ON>;
+        resets = <&cpg 703>;
+        interrupts = <GIC_SPI 108 IRQ_TYPE_LEVEL_HIGH>;
+
+        bus-range = <0 0>;
+        #address-cells = <3>;
+        #size-cells = <2>;
+        #interrupt-cells = <1>;
+        ranges = <0x02000000 0 0xee080000 0xee080000 0 0x00010000>;
+        dma-ranges = <0x42000000 0 0x40000000 0x40000000 0 0x40000000>;
+        interrupt-map-mask = <0xf800 0 0 0x7>;
+        interrupt-map = <0x0000 0 0 1 &gic GIC_SPI 108 IRQ_TYPE_LEVEL_HIGH>,
+                        <0x0800 0 0 1 &gic GIC_SPI 108 IRQ_TYPE_LEVEL_HIGH>,
+                        <0x1000 0 0 2 &gic GIC_SPI 108 IRQ_TYPE_LEVEL_HIGH>;
+
+        usb@1,0 {
+            reg = <0x800 0 0 0 0>;
+            phys = <&usb0 0>;
+            phy-names = "usb";
+        };
+
+        usb@2,0 {
+            reg = <0x1000 0 0 0 0>;
+            phys = <&usb0 0>;
+            phy-names = "usb";
+        };
+    };
-- 
2.35.1

[PATCH v3 2/8] dt-bindings: PCI: renesas,pci-rcar-gen2: Add device tree support for r9a06g032

[Herve Codina]

Add internal PCI bridge support for the r9a06g032 SOC. The Renesas
RZ/N1D (R9A06G032) internal PCI bridge is compatible with the one
present in the R-Car Gen2 family.
Compared to the R-Car Gen2 family, it needs three clocks instead of
one.

Signed-off-by: Herve Codina <herve.codina@bootlin.com>
---
 .../bindings/pci/renesas,pci-rcar-gen2.yaml   | 43 ++++++++++++++++---
 1 file changed, 37 insertions(+), 6 deletions(-)

diff --git a/Documentation/devicetree/bindings/pci/renesas,pci-rcar-gen2.yaml b/Documentation/devicetree/bindings/pci/renesas,pci-rcar-gen2.yaml
index 494eb975c146..c29c46533e1b 100644
--- a/Documentation/devicetree/bindings/pci/renesas,pci-rcar-gen2.yaml
+++ b/Documentation/devicetree/bindings/pci/renesas,pci-rcar-gen2.yaml
@@ -32,6 +32,10 @@ properties:
               - renesas,pci-r8a7793      # R-Car M2-N
               - renesas,pci-r8a7794      # R-Car E2
           - const: renesas,pci-rcar-gen2 # R-Car Gen2 and RZ/G1
+      - items:
+          - enum:
+              - renesas,pci-r9a06g032     # RZ/N1D
+          - const: renesas,pci-rzn1       # RZ/N1
 
   reg:
     items:
@@ -41,13 +45,9 @@ properties:
   interrupts:
     maxItems: 1
 
-  clocks:
-    items:
-      - description: Device clock
+  clocks: true
 
-  clock-names:
-    items:
-      - const: pclk
+  clock-names: true
 
   resets:
     maxItems: 1
@@ -113,6 +113,37 @@ required:
   - "#size-cells"
   - "#interrupt-cells"
 
+if:
+  properties:
+    compatible:
+      contains:
+        enum:
+          - renesas,pci-rzn1
+
+then:
+  properties:
+    clocks:
+      items:
+        - description: Internal bus clock (AHB) for HOST
+        - description: Internal bus clock (AHB) Power Management
+        - description: PCI clock for USB subsystem
+    clock-names:
+      items:
+        - const: hclk_usbh
+        - const: hclk_usbpm
+        - const: clk_pci_usb
+  required:
+    - clock-names
+
+else:
+  properties:
+    clocks:
+      items:
+        - description: Device clock
+    clock-names:
+      items:
+        - const: pclk
+
 unevaluatedProperties: false
 
 examples:
-- 
2.35.1

[PATCH v3 3/8] PCI: rcar-gen2: Add RZ/N1 SOCs support

[Herve Codina]

Add Renesas RZ/N1 SOCs family support to the Renesas R-Car
gen2 PCI bridge driver.
The Renesas RZ/N1 SOCs internal PCI bridge is comptible with
the one available in the R-Car Gen2 family.
Tested with the RZ/N1D (R9A06G032) SOC.

Signed-off-by: Herve Codina <herve.codina@bootlin.com>
---
 drivers/pci/controller/pci-rcar-gen2.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/pci/controller/pci-rcar-gen2.c b/drivers/pci/controller/pci-rcar-gen2.c
index 35804ea394fd..839695791757 100644
--- a/drivers/pci/controller/pci-rcar-gen2.c
+++ b/drivers/pci/controller/pci-rcar-gen2.c
@@ -328,6 +328,7 @@ static const struct of_device_id rcar_pci_of_match[] = {
 	{ .compatible = "renesas,pci-r8a7791", },
 	{ .compatible = "renesas,pci-r8a7794", },
 	{ .compatible = "renesas,pci-rcar-gen2", },
+	{ .compatible = "renesas,pci-rzn1", },
 	{ },
 };
 
-- 
2.35.1

[PATCH v3 4/8] soc: renesas: rzn1: Select PM and PM_GENERIC_DOMAINS configs

[Herve Codina]

PM and PM_GENERIC_DOMAINS configs are required for RZ/N1 SOCs.
Without these configs, the clocks used by the PCI bridge are not
enabled and so accessing the devices leads to a kernel crash:
  [    0.832958] Unhandled fault: external abort on non-linefetch (0x1008) at 0x90b5f848

Select PM and PM_GENERIC_DOMAINS for ARCH_RZN1

Signed-off-by: Herve Codina <herve.codina@bootlin.com>
---
 drivers/soc/renesas/Kconfig | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/soc/renesas/Kconfig b/drivers/soc/renesas/Kconfig
index fdc99a05a7e0..15fff5632167 100644
--- a/drivers/soc/renesas/Kconfig
+++ b/drivers/soc/renesas/Kconfig
@@ -47,6 +47,8 @@ config ARCH_RZG2L
 
 config ARCH_RZN1
 	bool
+	select PM
+	select PM_GENERIC_DOMAINS
 	select ARM_AMBA
 
 if ARM && ARCH_RENESAS
-- 
2.35.1

[PATCH v3 5/8] ARM: dts: r9a06g032: Add missing '#power-domain-cells'

[Herve Codina]

Without '#power-domain-cells' property, power-domains cannot
be used. This property is noted required in the device-tree
binding.

Add '#power-domain-cells' as needed.

Signed-off-by: Herve Codina <herve.codina@bootlin.com>
---
 arch/arm/boot/dts/r9a06g032.dtsi | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/boot/dts/r9a06g032.dtsi b/arch/arm/boot/dts/r9a06g032.dtsi
index 636a6ab31c58..20286433d3c6 100644
--- a/arch/arm/boot/dts/r9a06g032.dtsi
+++ b/arch/arm/boot/dts/r9a06g032.dtsi
@@ -87,6 +87,7 @@ sysctrl: system-controller@4000c000 {
 			reg = <0x4000c000 0x1000>;
 			status = "okay";
 			#clock-cells = <1>;
+			#power-domain-cells = <0>;
 
 			clocks = <&ext_mclk>, <&ext_rtc_clk>,
 					<&ext_jtag_clk>, <&ext_rgmii_ref>;
-- 
2.35.1

[PATCH v3 6/8] ARM: dts: r9a06g032: Add internal PCI bridge node

[Herve Codina]

Add the device node for the r9a06g032 internal PCI bridge device.

Signed-off-by: Herve Codina <herve.codina@bootlin.com>
---
 arch/arm/boot/dts/r9a06g032.dtsi | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/arch/arm/boot/dts/r9a06g032.dtsi b/arch/arm/boot/dts/r9a06g032.dtsi
index 20286433d3c6..33581f0c55c4 100644
--- a/arch/arm/boot/dts/r9a06g032.dtsi
+++ b/arch/arm/boot/dts/r9a06g032.dtsi
@@ -212,6 +212,35 @@ gic: interrupt-controller@44101000 {
 			interrupts =
 				<GIC_PPI 9 (GIC_CPU_MASK_SIMPLE(2) | IRQ_TYPE_LEVEL_HIGH)>;
 		};
+
+		pci_usb: pci@40030000 {
+			compatible = "renesas,pci-r9a06g032", "renesas,pci-rzn1";
+			device_type = "pci";
+			clocks = <&sysctrl R9A06G032_HCLK_USBH>,
+				 <&sysctrl R9A06G032_HCLK_USBPM>,
+				 <&sysctrl R9A06G032_CLK_PCI_USB>;
+			clock-names = "hclk_usbh", "hclk_usbpm", "clk_pci_usb";
+			power-domains = <&sysctrl>;
+			reg = <0x40030000 0xc00>,
+			      <0x40020000 0x1100>;
+			interrupts = <GIC_SPI 79 IRQ_TYPE_LEVEL_HIGH>;
+			status = "disabled";
+
+			bus-range = <0 0>;
+			#address-cells = <3>;
+			#size-cells = <2>;
+			#interrupt-cells = <1>;
+			ranges = <0x02000000 0 0x40020000 0x40020000 0 0x00010000>;
+			/* Should map all possible DDR as inbound ranges, but
+			 * the IP only supports a 256MB, 512MB, or 1GB window.
+			 * flags, PCI addr (64-bit), CPU addr, PCI size (64-bit)
+			 */
+			dma-ranges = <0x42000000 0 0x80000000 0x80000000 0 0x40000000>;
+			interrupt-map-mask = <0xf800 0 0 0x7>;
+			interrupt-map = <0x0000 0 0 1 &gic GIC_SPI 79 IRQ_TYPE_LEVEL_HIGH
+					 0x0800 0 0 1 &gic GIC_SPI 79 IRQ_TYPE_LEVEL_HIGH
+					 0x1000 0 0 2 &gic GIC_SPI 79 IRQ_TYPE_LEVEL_HIGH>;
+		};
 	};
 
 	timer {
-- 
2.35.1

[PATCH v3 7/8] ARM: dts: r9a06g032: Add USB PHY DT support

[Herve Codina]

Define the r9a06g032 generic part of the USB PHY device node.

Signed-off-by: Herve Codina <herve.codina@bootlin.com>
---
 arch/arm/boot/dts/r9a06g032.dtsi | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/arm/boot/dts/r9a06g032.dtsi b/arch/arm/boot/dts/r9a06g032.dtsi
index 33581f0c55c4..58af07eb75c9 100644
--- a/arch/arm/boot/dts/r9a06g032.dtsi
+++ b/arch/arm/boot/dts/r9a06g032.dtsi
@@ -59,6 +59,12 @@ ext_rtc_clk: extrtcclk {
 		clock-frequency = <0>;
 	};
 
+	usbphy: usbphy {
+		#phy-cells = <0>;
+		compatible = "usb-nop-xceiv";
+		status = "disabled";
+	};
+
 	soc {
 		compatible = "simple-bus";
 		#address-cells = <1>;
-- 
2.35.1

[PATCH v3 8/8] ARM: dts: r9a06g032: Link the PCI USB devices to the USB PHY

[Herve Codina]

Describe the PCI USB devices that are behind the PCI bridge, adding
necessary links to the USB PHY device.

Signed-off-by: Herve Codina <herve.codina@bootlin.com>
---
 arch/arm/boot/dts/r9a06g032.dtsi | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/arch/arm/boot/dts/r9a06g032.dtsi b/arch/arm/boot/dts/r9a06g032.dtsi
index 58af07eb75c9..8dc50c09ac65 100644
--- a/arch/arm/boot/dts/r9a06g032.dtsi
+++ b/arch/arm/boot/dts/r9a06g032.dtsi
@@ -246,6 +246,18 @@ pci_usb: pci@40030000 {
 			interrupt-map = <0x0000 0 0 1 &gic GIC_SPI 79 IRQ_TYPE_LEVEL_HIGH
 					 0x0800 0 0 1 &gic GIC_SPI 79 IRQ_TYPE_LEVEL_HIGH
 					 0x1000 0 0 2 &gic GIC_SPI 79 IRQ_TYPE_LEVEL_HIGH>;
+
+			usb@1,0 {
+				reg = <0x800 0 0 0 0>;
+				phys = <&usbphy>;
+				phy-names = "usb";
+			};
+
+			usb@2,0 {
+				reg = <0x1000 0 0 0 0>;
+				phys = <&usbphy>;
+				phy-names = "usb";
+			};
 		};
 	};
 
-- 
2.35.1

Re: [PATCH v3 3/8] PCI: rcar-gen2: Add RZ/N1 SOCs support

[Bjorn Helgaas]

On Fri, Apr 22, 2022 at 02:08:45PM +0200, Herve Codina wrote:
> Add Renesas RZ/N1 SOCs family support to the Renesas R-Car
> gen2 PCI bridge driver.
> The Renesas RZ/N1 SOCs internal PCI bridge is comptible with
> the one available in the R-Car Gen2 family.
> Tested with the RZ/N1D (R9A06G032) SOC.

Nits (only address if you have some other reason to repost this
series):

  - Subject claims this adds "support," which suggests that this adds
    some piece of new functionality.  But it adds no new
    functionality, it merely adds a new compatible string.  I would
    say "Add RZ/N1 SOC compatible string"

  - Add blank lines between paragraphs

  - Rewrap paragraphs to fill 75 characters

  - s/comptible/compatible/

  - s/R-Car gen2/R-Car Gen2/ to write this consistently instead of
    capitalizing "Gen2" sometimes but not others

> Signed-off-by: Herve Codina <herve.codina@bootlin.com>
> ---
>  drivers/pci/controller/pci-rcar-gen2.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/pci/controller/pci-rcar-gen2.c b/drivers/pci/controller/pci-rcar-gen2.c
> index 35804ea394fd..839695791757 100644
> --- a/drivers/pci/controller/pci-rcar-gen2.c
> +++ b/drivers/pci/controller/pci-rcar-gen2.c
> @@ -328,6 +328,7 @@ static const struct of_device_id rcar_pci_of_match[] = {
>  	{ .compatible = "renesas,pci-r8a7791", },
>  	{ .compatible = "renesas,pci-r8a7794", },
>  	{ .compatible = "renesas,pci-rcar-gen2", },
> +	{ .compatible = "renesas,pci-rzn1", },
>  	{ },
>  };
>  
> -- 
> 2.35.1
> 

Re: [PATCH v3 7/8] ARM: dts: r9a06g032: Add USB PHY DT support

[Sergey Shtylyov]

Hello!

On 4/22/22 3:08 PM, Herve Codina wrote:

> Define the r9a06g032 generic part of the USB PHY device node.
> 
> Signed-off-by: Herve Codina <herve.codina@bootlin.com>
> ---
>  arch/arm/boot/dts/r9a06g032.dtsi | 6 ++++++
>  1 file changed, 6 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/r9a06g032.dtsi b/arch/arm/boot/dts/r9a06g032.dtsi
> index 33581f0c55c4..58af07eb75c9 100644
> --- a/arch/arm/boot/dts/r9a06g032.dtsi
> +++ b/arch/arm/boot/dts/r9a06g032.dtsi
> @@ -59,6 +59,12 @@ ext_rtc_clk: extrtcclk {
>  		clock-frequency = <0>;
>  	};
>  
> +	usbphy: usbphy {

   I think the node name should be "usb-phy"...

[...]

MBR, Sergey

Re: [PATCH v3 7/8] ARM: dts: r9a06g032: Add USB PHY DT support

[Sergey Shtylyov]

On 4/23/22 12:09 PM, Sergey Shtylyov wrote:

[...]
>> Define the r9a06g032 generic part of the USB PHY device node.
>>
>> Signed-off-by: Herve Codina <herve.codina@bootlin.com>
>> ---
>>  arch/arm/boot/dts/r9a06g032.dtsi | 6 ++++++
>>  1 file changed, 6 insertions(+)
>>
>> diff --git a/arch/arm/boot/dts/r9a06g032.dtsi b/arch/arm/boot/dts/r9a06g032.dtsi
>> index 33581f0c55c4..58af07eb75c9 100644
>> --- a/arch/arm/boot/dts/r9a06g032.dtsi
>> +++ b/arch/arm/boot/dts/r9a06g032.dtsi
>> @@ -59,6 +59,12 @@ ext_rtc_clk: extrtcclk {
>>  		clock-frequency = <0>;
>>  	};
>>  
>> +	usbphy: usbphy {
> 
>    I think the node name should be "usb-phy"...

   It's not my thinking alone, the DT spec documents "usb-phy" in section 2.2.2. :-)

> [...]

MBR, Sergey

Re: [PATCH v3 1/8] dt-bindings: PCI: pci-rcar-gen2: Convert bindings to json-schema

[Rob Herring]

On Fri, Apr 22, 2022 at 02:08:43PM +0200, Herve Codina wrote:
> Convert Renesas PCI bridge bindings documentation to json-schema.
> 
> Signed-off-by: Herve Codina <herve.codina@bootlin.com>
> ---
>  .../devicetree/bindings/pci/pci-rcar-gen2.txt |  84 ----------
>  .../bindings/pci/renesas,pci-rcar-gen2.yaml   | 156 ++++++++++++++++++
>  2 files changed, 156 insertions(+), 84 deletions(-)
>  delete mode 100644 Documentation/devicetree/bindings/pci/pci-rcar-gen2.txt
>  create mode 100644 Documentation/devicetree/bindings/pci/renesas,pci-rcar-gen2.yaml

> diff --git a/Documentation/devicetree/bindings/pci/renesas,pci-rcar-gen2.yaml b/Documentation/devicetree/bindings/pci/renesas,pci-rcar-gen2.yaml
> new file mode 100644
> index 000000000000..494eb975c146
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/pci/renesas,pci-rcar-gen2.yaml
> @@ -0,0 +1,156 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/pci/renesas,pci-rcar-gen2.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Renesas AHB to PCI bridge
> +
> +maintainers:
> +  - Marek Vasut <marek.vasut+renesas@gmail.com>
> +  - Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
> +
> +description: |
> +  This is the bridge used internally to connect the USB controllers to the
> +  AHB. There is one bridge instance per USB port connected to the internal
> +  OHCI and EHCI controllers.
> +
> +allOf:
> +  - $ref: /schemas/pci/pci-bus.yaml#
> +
> +properties:
> +  compatible:
> +    oneOf:
> +      - items:

Don't need oneOf with only 1 entry. Otherwise,

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

> +          - enum:
> +              - renesas,pci-r8a7742      # RZ/G1H
> +              - renesas,pci-r8a7743      # RZ/G1M
> +              - renesas,pci-r8a7744      # RZ/G1N
> +              - renesas,pci-r8a7745      # RZ/G1E
> +              - renesas,pci-r8a7790      # R-Car H2
> +              - renesas,pci-r8a7791      # R-Car M2-W
> +              - renesas,pci-r8a7793      # R-Car M2-N
> +              - renesas,pci-r8a7794      # R-Car E2
> +          - const: renesas,pci-rcar-gen2 # R-Car Gen2 and RZ/G1
> +

Re: [PATCH v3 2/8] dt-bindings: PCI: renesas,pci-rcar-gen2: Add device tree support for r9a06g032

[Rob Herring]

On Fri, 22 Apr 2022 14:08:44 +0200, Herve Codina wrote:
> Add internal PCI bridge support for the r9a06g032 SOC. The Renesas
> RZ/N1D (R9A06G032) internal PCI bridge is compatible with the one
> present in the R-Car Gen2 family.
> Compared to the R-Car Gen2 family, it needs three clocks instead of
> one.
> 
> Signed-off-by: Herve Codina <herve.codina@bootlin.com>
> ---
>  .../bindings/pci/renesas,pci-rcar-gen2.yaml   | 43 ++++++++++++++++---
>  1 file changed, 37 insertions(+), 6 deletions(-)
> 

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

Re: [PATCH v3 1/8] dt-bindings: PCI: pci-rcar-gen2: Convert bindings to json-schema

[Rob Herring]

On Mon, Apr 25, 2022 at 7:45 PM Rob Herring <robh@kernel.org> wrote:
>
> On Fri, Apr 22, 2022 at 02:08:43PM +0200, Herve Codina wrote:
> > Convert Renesas PCI bridge bindings documentation to json-schema.
> >
> > Signed-off-by: Herve Codina <herve.codina@bootlin.com>
> > ---
> >  .../devicetree/bindings/pci/pci-rcar-gen2.txt |  84 ----------
> >  .../bindings/pci/renesas,pci-rcar-gen2.yaml   | 156 ++++++++++++++++++
> >  2 files changed, 156 insertions(+), 84 deletions(-)
> >  delete mode 100644 Documentation/devicetree/bindings/pci/pci-rcar-gen2.txt
> >  create mode 100644 Documentation/devicetree/bindings/pci/renesas,pci-rcar-gen2.yaml
>
> > diff --git a/Documentation/devicetree/bindings/pci/renesas,pci-rcar-gen2.yaml b/Documentation/devicetree/bindings/pci/renesas,pci-rcar-gen2.yaml
> > new file mode 100644
> > index 000000000000..494eb975c146
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/pci/renesas,pci-rcar-gen2.yaml
> > @@ -0,0 +1,156 @@
> > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/pci/renesas,pci-rcar-gen2.yaml#
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: Renesas AHB to PCI bridge
> > +
> > +maintainers:
> > +  - Marek Vasut <marek.vasut+renesas@gmail.com>
> > +  - Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
> > +
> > +description: |
> > +  This is the bridge used internally to connect the USB controllers to the
> > +  AHB. There is one bridge instance per USB port connected to the internal
> > +  OHCI and EHCI controllers.
> > +
> > +allOf:
> > +  - $ref: /schemas/pci/pci-bus.yaml#
> > +
> > +properties:
> > +  compatible:
> > +    oneOf:
> > +      - items:
>
> Don't need oneOf with only 1 entry. Otherwise,

Nevermind, I see you need it in the next patch.

>
> Reviewed-by: Rob Herring <robh@kernel.org>
>
> > +          - enum:
> > +              - renesas,pci-r8a7742      # RZ/G1H
> > +              - renesas,pci-r8a7743      # RZ/G1M
> > +              - renesas,pci-r8a7744      # RZ/G1N
> > +              - renesas,pci-r8a7745      # RZ/G1E
> > +              - renesas,pci-r8a7790      # R-Car H2
> > +              - renesas,pci-r8a7791      # R-Car M2-W
> > +              - renesas,pci-r8a7793      # R-Car M2-N
> > +              - renesas,pci-r8a7794      # R-Car E2
> > +          - const: renesas,pci-rcar-gen2 # R-Car Gen2 and RZ/G1
> > +

Re: [PATCH v3 4/8] soc: renesas: rzn1: Select PM and PM_GENERIC_DOMAINS configs

[Geert Uytterhoeven]

On Fri, Apr 22, 2022 at 2:09 PM Herve Codina <herve.codina@bootlin.com> wrote:
> PM and PM_GENERIC_DOMAINS configs are required for RZ/N1 SOCs.
> Without these configs, the clocks used by the PCI bridge are not
> enabled and so accessing the devices leads to a kernel crash:
>   [    0.832958] Unhandled fault: external abort on non-linefetch (0x1008) at 0x90b5f848
>
> Select PM and PM_GENERIC_DOMAINS for ARCH_RZN1
>
> Signed-off-by: Herve Codina <herve.codina@bootlin.com>

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
i.e. will queue in renesas-devel for v5.19.

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

Re: [PATCH v3 5/8] ARM: dts: r9a06g032: Add missing '#power-domain-cells'

[Geert Uytterhoeven]

On Fri, Apr 22, 2022 at 2:09 PM Herve Codina <herve.codina@bootlin.com> wrote:
> Without '#power-domain-cells' property, power-domains cannot
> be used. This property is noted required in the device-tree
> binding.
>
> Add '#power-domain-cells' as needed.
>
> Signed-off-by: Herve Codina <herve.codina@bootlin.com>

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
i.e. will queue in renesas-devel for v5.19.

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

Re: [PATCH v3 1/8] dt-bindings: PCI: pci-rcar-gen2: Convert bindings to json-schema

[Geert Uytterhoeven]

On Fri, Apr 22, 2022 at 2:09 PM Herve Codina <herve.codina@bootlin.com> wrote:
> Convert Renesas PCI bridge bindings documentation to json-schema.
>
> Signed-off-by: Herve Codina <herve.codina@bootlin.com>

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

Re: [PATCH v3 2/8] dt-bindings: PCI: renesas,pci-rcar-gen2: Add device tree support for r9a06g032

[Geert Uytterhoeven]

Hi Hervé,

On Fri, Apr 22, 2022 at 2:09 PM Herve Codina <herve.codina@bootlin.com> wrote:
> Add internal PCI bridge support for the r9a06g032 SOC. The Renesas
> RZ/N1D (R9A06G032) internal PCI bridge is compatible with the one
> present in the R-Car Gen2 family.
> Compared to the R-Car Gen2 family, it needs three clocks instead of
> one.
>
> Signed-off-by: Herve Codina <herve.codina@bootlin.com>

Thanks for your patch!

> --- a/Documentation/devicetree/bindings/pci/renesas,pci-rcar-gen2.yaml
> +++ b/Documentation/devicetree/bindings/pci/renesas,pci-rcar-gen2.yaml
> @@ -113,6 +113,37 @@ required:
>    - "#size-cells"
>    - "#interrupt-cells"
>
> +if:
> +  properties:
> +    compatible:
> +      contains:
> +        enum:
> +          - renesas,pci-rzn1
> +
> +then:
> +  properties:
> +    clocks:
> +      items:
> +        - description: Internal bus clock (AHB) for HOST
> +        - description: Internal bus clock (AHB) Power Management
> +        - description: PCI clock for USB subsystem
> +    clock-names:
> +      items:
> +        - const: hclk_usbh
> +        - const: hclk_usbpm
> +        - const: clk_pci_usb

These are the provider names.
I think they should use the consumer names: usb_hclkh, usb_hclkpm,
and usb_pciclk.

The rest looks good to me.

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

Re: [PATCH v3 2/8] dt-bindings: PCI: renesas,pci-rcar-gen2: Add device tree support for r9a06g032

[Herve Codina]

Hi Geert,

On Wed, 27 Apr 2022 17:15:15 +0200
Geert Uytterhoeven <geert@linux-m68k.org> wrote:

> Hi Hervé,
> 
> On Fri, Apr 22, 2022 at 2:09 PM Herve Codina <herve.codina@bootlin.com> wrote:
> > Add internal PCI bridge support for the r9a06g032 SOC. The Renesas
> > RZ/N1D (R9A06G032) internal PCI bridge is compatible with the one
> > present in the R-Car Gen2 family.
> > Compared to the R-Car Gen2 family, it needs three clocks instead of
> > one.
> >
> > Signed-off-by: Herve Codina <herve.codina@bootlin.com>  
> 
> Thanks for your patch!
> 
> > --- a/Documentation/devicetree/bindings/pci/renesas,pci-rcar-gen2.yaml
> > +++ b/Documentation/devicetree/bindings/pci/renesas,pci-rcar-gen2.yaml
> > @@ -113,6 +113,37 @@ required:
> >    - "#size-cells"
> >    - "#interrupt-cells"
> >
> > +if:
> > +  properties:
> > +    compatible:
> > +      contains:
> > +        enum:
> > +          - renesas,pci-rzn1
> > +
> > +then:
> > +  properties:
> > +    clocks:
> > +      items:
> > +        - description: Internal bus clock (AHB) for HOST
> > +        - description: Internal bus clock (AHB) Power Management
> > +        - description: PCI clock for USB subsystem
> > +    clock-names:
> > +      items:
> > +        - const: hclk_usbh
> > +        - const: hclk_usbpm
> > +        - const: clk_pci_usb  
> 
> These are the provider names.
> I think they should use the consumer names: usb_hclkh, usb_hclkpm,
> and usb_pciclk.

Yes, it makes sense.
I will changed in v4.

> 
> The rest looks good to me.

Perfect.

Thanks for the review,
Hervé


-- 
Hervé Codina, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com

Re: [PATCH v3 4/8] soc: renesas: rzn1: Select PM and PM_GENERIC_DOMAINS configs

[Herve Codina]

Hi Geert,

On Wed, 27 Apr 2022 16:58:07 +0200
Geert Uytterhoeven <geert@linux-m68k.org> wrote:

> On Fri, Apr 22, 2022 at 2:09 PM Herve Codina <herve.codina@bootlin.com> wrote:
> > PM and PM_GENERIC_DOMAINS configs are required for RZ/N1 SOCs.
> > Without these configs, the clocks used by the PCI bridge are not
> > enabled and so accessing the devices leads to a kernel crash:
> >   [    0.832958] Unhandled fault: external abort on non-linefetch (0x1008) at 0x90b5f848
> >
> > Select PM and PM_GENERIC_DOMAINS for ARCH_RZN1
> >
> > Signed-off-by: Herve Codina <herve.codina@bootlin.com>  
> 
> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
> i.e. will queue in renesas-devel for v5.19.
> 

I plan to send a v4 of this series.

As this patch (4/8) and the following one (5/8) will be
queued for v5.19, I plan to remove them from the v4 version
of the series.

Is that ok for you or do you prefer to still have them
in v4 ?

Regards,
Hervé

-- 
Hervé Codina, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com

Re: [PATCH v3 3/8] PCI: rcar-gen2: Add RZ/N1 SOCs support

[Herve Codina]

Hi Bjorn,

On Fri, 22 Apr 2022 11:47:44 -0500
Bjorn Helgaas <helgaas@kernel.org> wrote:

> On Fri, Apr 22, 2022 at 02:08:45PM +0200, Herve Codina wrote:
> > Add Renesas RZ/N1 SOCs family support to the Renesas R-Car
> > gen2 PCI bridge driver.
> > The Renesas RZ/N1 SOCs internal PCI bridge is comptible with
> > the one available in the R-Car Gen2 family.
> > Tested with the RZ/N1D (R9A06G032) SOC.  
> 
> Nits (only address if you have some other reason to repost this
> series):
> 
>   - Subject claims this adds "support," which suggests that this adds
>     some piece of new functionality.  But it adds no new
>     functionality, it merely adds a new compatible string.  I would
>     say "Add RZ/N1 SOC compatible string"
> 
>   - Add blank lines between paragraphs
> 
>   - Rewrap paragraphs to fill 75 characters
> 
>   - s/comptible/compatible/
> 
>   - s/R-Car gen2/R-Car Gen2/ to write this consistently instead of
>     capitalizing "Gen2" sometimes but not others

I plan a v4 and so, I will take these points into account.

Thanks for the review.

Regards,
Hervé

-- 
Hervé Codina, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com

Re: [PATCH v3 4/8] soc: renesas: rzn1: Select PM and PM_GENERIC_DOMAINS configs

[Geert Uytterhoeven]

Hi Hervé,

On Thu, Apr 28, 2022 at 11:15 AM Herve Codina <herve.codina@bootlin.com> wrote:
> On Wed, 27 Apr 2022 16:58:07 +0200
> Geert Uytterhoeven <geert@linux-m68k.org> wrote:
> > On Fri, Apr 22, 2022 at 2:09 PM Herve Codina <herve.codina@bootlin.com> wrote:
> > > PM and PM_GENERIC_DOMAINS configs are required for RZ/N1 SOCs.
> > > Without these configs, the clocks used by the PCI bridge are not
> > > enabled and so accessing the devices leads to a kernel crash:
> > >   [    0.832958] Unhandled fault: external abort on non-linefetch (0x1008) at 0x90b5f848
> > >
> > > Select PM and PM_GENERIC_DOMAINS for ARCH_RZN1
> > >
> > > Signed-off-by: Herve Codina <herve.codina@bootlin.com>
> >
> > Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
> > i.e. will queue in renesas-devel for v5.19.
>
> I plan to send a v4 of this series.
>
> As this patch (4/8) and the following one (5/8) will be
> queued for v5.19, I plan to remove them from the v4 version
> of the series.
>
> Is that ok for you or do you prefer to still have them
> in v4 ?

As these two patches are not strictly related to adding PCI support,
but they are dependencies, I will queue them separately. Hence you
do not need to include them in v5.

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

Re: [PATCH v3 7/8] ARM: dts: r9a06g032: Add USB PHY DT support

[Herve Codina]

Hi Sergey,

On Sat, 23 Apr 2022 19:41:09 +0300
Sergey Shtylyov <s.shtylyov@omp.ru> wrote:

> On 4/23/22 12:09 PM, Sergey Shtylyov wrote:
> 
> [...]
> >> Define the r9a06g032 generic part of the USB PHY device node.
> >>
> >> Signed-off-by: Herve Codina <herve.codina@bootlin.com>
> >> ---
> >>  arch/arm/boot/dts/r9a06g032.dtsi | 6 ++++++
> >>  1 file changed, 6 insertions(+)
> >>
> >> diff --git a/arch/arm/boot/dts/r9a06g032.dtsi b/arch/arm/boot/dts/r9a06g032.dtsi
> >> index 33581f0c55c4..58af07eb75c9 100644
> >> --- a/arch/arm/boot/dts/r9a06g032.dtsi
> >> +++ b/arch/arm/boot/dts/r9a06g032.dtsi
> >> @@ -59,6 +59,12 @@ ext_rtc_clk: extrtcclk {
> >>  		clock-frequency = <0>;
> >>  	};
> >>  
> >> +	usbphy: usbphy {  
> > 
> >    I think the node name should be "usb-phy"...  
> 
>    It's not my thinking alone, the DT spec documents "usb-phy" in section 2.2.2. :-)

Will be changed in v4.

Thanks for pointing this.

Regards,
Hervé

-- 
Hervé Codina, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com

Re: [PATCH v3 4/8] soc: renesas: rzn1: Select PM and PM_GENERIC_DOMAINS configs

[Herve Codina]

Hi Geert,
On Thu, 28 Apr 2022 11:22:35 +0200
Geert Uytterhoeven <geert@linux-m68k.org> wrote:

> Hi Hervé,
> 
> On Thu, Apr 28, 2022 at 11:15 AM Herve Codina <herve.codina@bootlin.com> wrote:
> > On Wed, 27 Apr 2022 16:58:07 +0200
> > Geert Uytterhoeven <geert@linux-m68k.org> wrote:  
> > > On Fri, Apr 22, 2022 at 2:09 PM Herve Codina <herve.codina@bootlin.com> wrote:  
> > > > PM and PM_GENERIC_DOMAINS configs are required for RZ/N1 SOCs.
> > > > Without these configs, the clocks used by the PCI bridge are not
> > > > enabled and so accessing the devices leads to a kernel crash:
> > > >   [    0.832958] Unhandled fault: external abort on non-linefetch (0x1008) at 0x90b5f848
> > > >
> > > > Select PM and PM_GENERIC_DOMAINS for ARCH_RZN1
> > > >
> > > > Signed-off-by: Herve Codina <herve.codina@bootlin.com>  
> > >
> > > Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
> > > i.e. will queue in renesas-devel for v5.19.  
> >
> > I plan to send a v4 of this series.
> >
> > As this patch (4/8) and the following one (5/8) will be
> > queued for v5.19, I plan to remove them from the v4 version
> > of the series.
> >
> > Is that ok for you or do you prefer to still have them
> > in v4 ?  
> 
> As these two patches are not strictly related to adding PCI support,
> but they are dependencies, I will queue them separately. Hence you
> do not need to include them in v5.

Perfect.

Thanks,
Hervé

-- 
Hervé Codina, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com

Re: [PATCH v3 6/8] ARM: dts: r9a06g032: Add internal PCI bridge node

[Geert Uytterhoeven]

Hi Hervé

On Fri, Apr 22, 2022 at 2:09 PM Herve Codina <herve.codina@bootlin.com> wrote:
> Add the device node for the r9a06g032 internal PCI bridge device.
>
> Signed-off-by: Herve Codina <herve.codina@bootlin.com>

Thanks for your patch!

> --- a/arch/arm/boot/dts/r9a06g032.dtsi
> +++ b/arch/arm/boot/dts/r9a06g032.dtsi
> @@ -212,6 +212,35 @@ gic: interrupt-controller@44101000 {
>                         interrupts =
>                                 <GIC_PPI 9 (GIC_CPU_MASK_SIMPLE(2) | IRQ_TYPE_LEVEL_HIGH)>;
>                 };
> +
> +               pci_usb: pci@40030000 {
> +                       compatible = "renesas,pci-r9a06g032", "renesas,pci-rzn1";
> +                       device_type = "pci";
> +                       clocks = <&sysctrl R9A06G032_HCLK_USBH>,
> +                                <&sysctrl R9A06G032_HCLK_USBPM>,
> +                                <&sysctrl R9A06G032_CLK_PCI_USB>;
> +                       clock-names = "hclk_usbh", "hclk_usbpm", "clk_pci_usb";

The clock names need an update, cfr. my comment on the bindings.

The rest LGTM, so with the above fixed:
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

Re: [PATCH v3 6/8] ARM: dts: r9a06g032: Add internal PCI bridge node

[Geert Uytterhoeven]

Hi Hervé,

On Thu, Apr 28, 2022 at 11:49 AM Geert Uytterhoeven
<geert@linux-m68k.org> wrote:
> > --- a/arch/arm/boot/dts/r9a06g032.dtsi
> > +++ b/arch/arm/boot/dts/r9a06g032.dtsi
> > @@ -212,6 +212,35 @@ gic: interrupt-controller@44101000 {
> >                         interrupts =
> >                                 <GIC_PPI 9 (GIC_CPU_MASK_SIMPLE(2) | IRQ_TYPE_LEVEL_HIGH)>;
> >                 };
> > +
> > +               pci_usb: pci@40030000 {

Please preserve sort order (by unit address).

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

Re: [PATCH v3 7/8] ARM: dts: r9a06g032: Add USB PHY DT support

[Geert Uytterhoeven]

Hi Hervé,

On Fri, Apr 22, 2022 at 2:09 PM Herve Codina <herve.codina@bootlin.com> wrote:
> Define the r9a06g032 generic part of the USB PHY device node.
>
> Signed-off-by: Herve Codina <herve.codina@bootlin.com>

Thanks for your patch!

> --- a/arch/arm/boot/dts/r9a06g032.dtsi
> +++ b/arch/arm/boot/dts/r9a06g032.dtsi
> @@ -59,6 +59,12 @@ ext_rtc_clk: extrtcclk {
>                 clock-frequency = <0>;
>         };
>
> +       usbphy: usbphy {

Please preserve sort order (by node name).

> +               #phy-cells = <0>;
> +               compatible = "usb-nop-xceiv";
> +               status = "disabled";
> +       };
> +
>         soc {
>                 compatible = "simple-bus";
>                 #address-cells = <1>;

The rest LGTM, so with the above fixed:
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

Re: [PATCH v3 8/8] ARM: dts: r9a06g032: Link the PCI USB devices to the USB PHY

[Geert Uytterhoeven]

On Fri, Apr 22, 2022 at 2:09 PM Herve Codina <herve.codina@bootlin.com> wrote:
> Describe the PCI USB devices that are behind the PCI bridge, adding
> necessary links to the USB PHY device.
>
> Signed-off-by: Herve Codina <herve.codina@bootlin.com>

LGTM, so
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

Re: [PATCH v3 6/8] ARM: dts: r9a06g032: Add internal PCI bridge node

[Herve Codina]

Hi Geert,
On Thu, 28 Apr 2022 11:49:28 +0200
Geert Uytterhoeven <geert@linux-m68k.org> wrote:

> Hi Hervé
> 
> On Fri, Apr 22, 2022 at 2:09 PM Herve Codina <herve.codina@bootlin.com> wrote:
> > Add the device node for the r9a06g032 internal PCI bridge device.
> >
> > Signed-off-by: Herve Codina <herve.codina@bootlin.com>  
> 
> Thanks for your patch!
> 
> > --- a/arch/arm/boot/dts/r9a06g032.dtsi
> > +++ b/arch/arm/boot/dts/r9a06g032.dtsi
> > @@ -212,6 +212,35 @@ gic: interrupt-controller@44101000 {
> >                         interrupts =
> >                                 <GIC_PPI 9 (GIC_CPU_MASK_SIMPLE(2) | IRQ_TYPE_LEVEL_HIGH)>;
> >                 };
> > +
> > +               pci_usb: pci@40030000 {
> > +                       compatible = "renesas,pci-r9a06g032", "renesas,pci-rzn1";
> > +                       device_type = "pci";
> > +                       clocks = <&sysctrl R9A06G032_HCLK_USBH>,
> > +                                <&sysctrl R9A06G032_HCLK_USBPM>,
> > +                                <&sysctrl R9A06G032_CLK_PCI_USB>;
> > +                       clock-names = "hclk_usbh", "hclk_usbpm", "clk_pci_usb";  
> 
> The clock names need an update, cfr. my comment on the bindings.

Sure.

> 
> The rest LGTM, so with the above fixed:
> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
> 

Thanks for the review.

Regards,
Hervé
-- 
Hervé Codina, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com

Re: [PATCH v3 6/8] ARM: dts: r9a06g032: Add internal PCI bridge node

[Herve Codina]

Hi Geert,
On Thu, 28 Apr 2022 11:50:21 +0200
Geert Uytterhoeven <geert@linux-m68k.org> wrote:

> Hi Hervé,
> 
> On Thu, Apr 28, 2022 at 11:49 AM Geert Uytterhoeven
> <geert@linux-m68k.org> wrote:
> > > --- a/arch/arm/boot/dts/r9a06g032.dtsi
> > > +++ b/arch/arm/boot/dts/r9a06g032.dtsi
> > > @@ -212,6 +212,35 @@ gic: interrupt-controller@44101000 {
> > >                         interrupts =
> > >                                 <GIC_PPI 9 (GIC_CPU_MASK_SIMPLE(2) | IRQ_TYPE_LEVEL_HIGH)>;
> > >                 };
> > > +
> > > +               pci_usb: pci@40030000 {  
> 
> Please preserve sort order (by unit address).

Ok, will be done in v4.

Thanks,
Hervé

-- 
Hervé Codina, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com

Re: [PATCH v3 7/8] ARM: dts: r9a06g032: Add USB PHY DT support

[Herve Codina]

Hi Geert,
On Thu, 28 Apr 2022 11:51:44 +0200
Geert Uytterhoeven <geert@linux-m68k.org> wrote:

> Hi Hervé,
> 
> On Fri, Apr 22, 2022 at 2:09 PM Herve Codina <herve.codina@bootlin.com> wrote:
> > Define the r9a06g032 generic part of the USB PHY device node.
> >
> > Signed-off-by: Herve Codina <herve.codina@bootlin.com>  
> 
> Thanks for your patch!
> 
> > --- a/arch/arm/boot/dts/r9a06g032.dtsi
> > +++ b/arch/arm/boot/dts/r9a06g032.dtsi
> > @@ -59,6 +59,12 @@ ext_rtc_clk: extrtcclk {
> >                 clock-frequency = <0>;
> >         };
> >
> > +       usbphy: usbphy {  
> 
> Please preserve sort order (by node name).

Ok, will be done.

> 
> > +               #phy-cells = <0>;
> > +               compatible = "usb-nop-xceiv";
> > +               status = "disabled";
> > +       };
> > +
> >         soc {
> >                 compatible = "simple-bus";
> >                 #address-cells = <1>;  
> 
> The rest LGTM, so with the above fixed:
> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
> 

Regards,
Hervé

-- 
Hervé Codina, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com