[PATCH V2 0/3] Convert Unisoc GPIO bindings to yaml and add support for UMS512

[PATCH V2 0/3] Convert Unisoc GPIO bindings to yaml and add support for UMS512

[Chunyan Zhang]

From: Chunyan Zhang <chunyan.zhang@unisoc.com>

Changes on V2:
* Addressed review comments:
- Fixed typo;
- Added description for 'reg' property and modified its maxItems;
- Removed redundant examples;
- Rephrased commit message.

Chunyan Zhang (3):
  dt-bindings: gpio: Convert Unisoc GPIO controller binding to yaml
  dt-bindings: gpio: Convert Unisoc EIC controller binding to yaml
  dt-bindings: gpio: Add compatible string for Unisoc UMS512

 .../bindings/gpio/gpio-eic-sprd.txt           |  97 ------------
 .../devicetree/bindings/gpio/gpio-sprd.txt    |  28 ----
 .../bindings/gpio/sprd,gpio-eic.yaml          | 140 ++++++++++++++++++
 .../devicetree/bindings/gpio/sprd,gpio.yaml   |  75 ++++++++++
 4 files changed, 215 insertions(+), 125 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/gpio/gpio-eic-sprd.txt
 delete mode 100644 Documentation/devicetree/bindings/gpio/gpio-sprd.txt
 create mode 100644 Documentation/devicetree/bindings/gpio/sprd,gpio-eic.yaml
 create mode 100644 Documentation/devicetree/bindings/gpio/sprd,gpio.yaml

-- 
2.25.1

[PATCH V2 1/3] dt-bindings: gpio: Convert Unisoc GPIO controller binding to yaml

[Chunyan Zhang]

From: Chunyan Zhang <chunyan.zhang@unisoc.com>

Convert the Unisoc gpio controller binding to DT schema format.

Signed-off-by: Chunyan Zhang <chunyan.zhang@unisoc.com>
---
 .../devicetree/bindings/gpio/gpio-sprd.txt    | 28 --------
 .../devicetree/bindings/gpio/sprd,gpio.yaml   | 70 +++++++++++++++++++
 2 files changed, 70 insertions(+), 28 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/gpio/gpio-sprd.txt
 create mode 100644 Documentation/devicetree/bindings/gpio/sprd,gpio.yaml

diff --git a/Documentation/devicetree/bindings/gpio/gpio-sprd.txt b/Documentation/devicetree/bindings/gpio/gpio-sprd.txt
deleted file mode 100644
index eca97d45388f..000000000000
--- a/Documentation/devicetree/bindings/gpio/gpio-sprd.txt
+++ /dev/null
@@ -1,28 +0,0 @@
-Spreadtrum GPIO controller bindings
-
-The controller's registers are organized as sets of sixteen 16-bit
-registers with each set controlling a bank of up to 16 pins. A single
-interrupt is shared for all of the banks handled by the controller.
-
-Required properties:
-- compatible: Should be "sprd,sc9860-gpio".
-- reg: Define the base and range of the I/O address space containing
-the GPIO controller registers.
-- gpio-controller: Marks the device node as a GPIO controller.
-- #gpio-cells: Should be <2>. The first cell is the gpio number and
-the second cell is used to specify optional parameters.
-- interrupt-controller: Marks the device node as an interrupt controller.
-- #interrupt-cells: Should be <2>. Specifies the number of cells needed
-to encode interrupt source.
-- interrupts: Should be the port interrupt shared by all the gpios.
-
-Example:
-	ap_gpio: gpio@40280000 {
-		compatible = "sprd,sc9860-gpio";
-		reg = <0 0x40280000 0 0x1000>;
-		gpio-controller;
-		#gpio-cells = <2>;
-		interrupt-controller;
-		#interrupt-cells = <2>;
-		interrupts = <GIC_SPI 50 IRQ_TYPE_LEVEL_HIGH>;
-	};
diff --git a/Documentation/devicetree/bindings/gpio/sprd,gpio.yaml b/Documentation/devicetree/bindings/gpio/sprd,gpio.yaml
new file mode 100644
index 000000000000..c0cd1ed9809b
--- /dev/null
+++ b/Documentation/devicetree/bindings/gpio/sprd,gpio.yaml
@@ -0,0 +1,70 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright 2022 Unisoc Inc.
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/gpio/sprd,gpio.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Unisoc GPIO controller
+
+maintainers:
+  - Orson Zhai <orsonzhai@gmail.com>
+  - Baolin Wang <baolin.wang7@gmail.com>
+  - Chunyan Zhang <zhang.lyra@gmail.com>
+
+description:
+  The controller's registers are organized as sets of sixteen 16-bit
+  registers with each set controlling a bank of up to 16 pins. A single
+  interrupt is shared for all of the banks handled by the controller.
+
+properties:
+  compatible:
+    const: sprd,sc9860-gpio
+
+  reg:
+    maxItems: 1
+
+  gpio-controller: true
+
+  "#gpio-cells":
+    const: 2
+
+  interrupt-controller: true
+
+  "#interrupt-cells":
+    const: 2
+
+  interrupts:
+    maxItems: 1
+    description: The interrupt shared by all GPIO lines for this controller.
+
+required:
+  - compatible
+  - reg
+  - gpio-controller
+  - "#gpio-cells"
+  - interrupt-controller
+  - "#interrupt-cells"
+  - interrupts
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    soc {
+        #address-cells = <2>;
+        #size-cells = <2>;
+
+        ap_gpio: gpio@40280000 {
+            compatible = "sprd,sc9860-gpio";
+            reg = <0 0x40280000 0 0x1000>;
+            gpio-controller;
+            #gpio-cells = <2>;
+            interrupt-controller;
+            #interrupt-cells = <2>;
+            interrupts = <GIC_SPI 50 IRQ_TYPE_LEVEL_HIGH>;
+        };
+    };
+...
-- 
2.25.1

[PATCH V2 2/3] dt-bindings: gpio: Convert Unisoc EIC controller binding to yaml

[Chunyan Zhang]

From: Chunyan Zhang <chunyan.zhang@unisoc.com>

Convert the Unisoc EIC controller binding to DT schema format.
Update the maxItems of 'reg' property, since the current gpio-eic-sprd
driver supports 3 reg items. Also remove three redundant examples.

Signed-off-by: Chunyan Zhang <chunyan.zhang@unisoc.com>
---
 .../bindings/gpio/gpio-eic-sprd.txt           |  97 --------------
 .../bindings/gpio/sprd,gpio-eic.yaml          | 119 ++++++++++++++++++
 2 files changed, 119 insertions(+), 97 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/gpio/gpio-eic-sprd.txt
 create mode 100644 Documentation/devicetree/bindings/gpio/sprd,gpio-eic.yaml

diff --git a/Documentation/devicetree/bindings/gpio/gpio-eic-sprd.txt b/Documentation/devicetree/bindings/gpio/gpio-eic-sprd.txt
deleted file mode 100644
index 54040a2bfe3a..000000000000
--- a/Documentation/devicetree/bindings/gpio/gpio-eic-sprd.txt
+++ /dev/null
@@ -1,97 +0,0 @@
-Spreadtrum EIC controller bindings
-
-The EIC is the abbreviation of external interrupt controller, which can
-be used only in input mode. The Spreadtrum platform has 2 EIC controllers,
-one is in digital chip, and another one is in PMIC. The digital chip EIC
-controller contains 4 sub-modules: EIC-debounce, EIC-latch, EIC-async and
-EIC-sync. But the PMIC EIC controller contains only one EIC-debounce sub-
-module.
-
-The EIC-debounce sub-module provides up to 8 source input signal
-connections. A debounce mechanism is used to capture the input signals'
-stable status (millisecond resolution) and a single-trigger mechanism
-is introduced into this sub-module to enhance the input event detection
-reliability. In addition, this sub-module's clock can be shut off
-automatically to reduce power dissipation. Moreover the debounce range
-is from 1ms to 4s with a step size of 1ms. The input signal will be
-ignored if it is asserted for less than 1 ms.
-
-The EIC-latch sub-module is used to latch some special power down signals
-and generate interrupts, since the EIC-latch does not depend on the APB
-clock to capture signals.
-
-The EIC-async sub-module uses a 32kHz clock to capture the short signals
-(microsecond resolution) to generate interrupts by level or edge trigger.
-
-The EIC-sync is similar with GPIO's input function, which is a synchronized
-signal input register. It can generate interrupts by level or edge trigger
-when detecting input signals.
-
-Required properties:
-- compatible: Should be one of the following:
-  "sprd,sc9860-eic-debounce",
-  "sprd,sc9860-eic-latch",
-  "sprd,sc9860-eic-async",
-  "sprd,sc9860-eic-sync",
-  "sprd,sc2731-eic".
-- reg: Define the base and range of the I/O address space containing
-  the GPIO controller registers.
-- gpio-controller: Marks the device node as a GPIO controller.
-- #gpio-cells: Should be <2>. The first cell is the gpio number and
-  the second cell is used to specify optional parameters.
-- interrupt-controller: Marks the device node as an interrupt controller.
-- #interrupt-cells: Should be <2>. Specifies the number of cells needed
-  to encode interrupt source.
-- interrupts: Should be the port interrupt shared by all the gpios.
-
-Example:
-	eic_debounce: gpio@40210000 {
-		compatible = "sprd,sc9860-eic-debounce";
-		reg = <0 0x40210000 0 0x80>;
-		gpio-controller;
-		#gpio-cells = <2>;
-		interrupt-controller;
-		#interrupt-cells = <2>;
-		interrupts = <GIC_SPI 52 IRQ_TYPE_LEVEL_HIGH>;
-	};
-
-	eic_latch: gpio@40210080 {
-		compatible = "sprd,sc9860-eic-latch";
-		reg = <0 0x40210080 0 0x20>;
-		gpio-controller;
-		#gpio-cells = <2>;
-		interrupt-controller;
-		#interrupt-cells = <2>;
-		interrupts = <GIC_SPI 52 IRQ_TYPE_LEVEL_HIGH>;
-	};
-
-	eic_async: gpio@402100a0 {
-		compatible = "sprd,sc9860-eic-async";
-		reg = <0 0x402100a0 0 0x20>;
-		gpio-controller;
-		#gpio-cells = <2>;
-		interrupt-controller;
-		#interrupt-cells = <2>;
-		interrupts = <GIC_SPI 52 IRQ_TYPE_LEVEL_HIGH>;
-	};
-
-	eic_sync: gpio@402100c0 {
-		compatible = "sprd,sc9860-eic-sync";
-		reg = <0 0x402100c0 0 0x20>;
-		gpio-controller;
-		#gpio-cells = <2>;
-		interrupt-controller;
-		#interrupt-cells = <2>;
-		interrupts = <GIC_SPI 52 IRQ_TYPE_LEVEL_HIGH>;
-	};
-
-	pmic_eic: gpio@300 {
-		compatible = "sprd,sc2731-eic";
-		reg = <0x300>;
-		interrupt-parent = <&sc2731_pmic>;
-		interrupts = <5 IRQ_TYPE_LEVEL_HIGH>;
-		gpio-controller;
-		#gpio-cells = <2>;
-		interrupt-controller;
-		#interrupt-cells = <2>;
-	};
diff --git a/Documentation/devicetree/bindings/gpio/sprd,gpio-eic.yaml b/Documentation/devicetree/bindings/gpio/sprd,gpio-eic.yaml
new file mode 100644
index 000000000000..c288a8dd44c8
--- /dev/null
+++ b/Documentation/devicetree/bindings/gpio/sprd,gpio-eic.yaml
@@ -0,0 +1,119 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright 2022 Unisoc Inc.
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/gpio/sprd,gpio-eic.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Unisoc EIC controller
+
+maintainers:
+  - Orson Zhai <orsonzhai@gmail.com>
+  - Baolin Wang <baolin.wang7@gmail.com>
+  - Chunyan Zhang <zhang.lyra@gmail.com>
+
+description:
+  The EIC is the abbreviation of external interrupt controller, which can
+  be used only in input mode. The Spreadtrum platform has 2 EIC controllers,
+  one is in digital chip, and another one is in PMIC. The digital chip EIC
+  controller contains 4 sub-modules, i.e. EIC-debounce, EIC-latch, EIC-async and
+  EIC-sync. But the PMIC EIC controller contains only one EIC-debounce sub-
+  module.
+
+  The EIC-debounce sub-module provides up to 8 source input signal
+  connections. A debounce mechanism is used to capture the input signals'
+  stable status (millisecond resolution) and a single-trigger mechanism
+  is introduced into this sub-module to enhance the input event detection
+  reliability. In addition, this sub-module's clock can be shut off
+  automatically to reduce power dissipation. Moreover the debounce range
+  is from 1ms to 4s with a step size of 1ms. The input signal will be
+  ignored if it is asserted for less than 1 ms.
+
+  The EIC-latch sub-module is used to latch some special power down signals
+  and generate interrupts, since the EIC-latch does not depend on the APB
+  clock to capture signals.
+
+  The EIC-async sub-module uses a 32kHz clock to capture the short signals
+  (microsecond resolution) to generate interrupts by level or edge trigger.
+
+  The EIC-sync is similar with GPIO's input function, which is a synchronized
+  signal input register. It can generate interrupts by level or edge trigger
+  when detecting input signals.
+
+properties:
+  compatible:
+    enum:
+      - sprd,sc9860-eic-debounce
+      - sprd,sc9860-eic-latch
+      - sprd,sc9860-eic-async
+      - sprd,sc9860-eic-sync
+      - sprd,sc2731-eic
+
+  reg:
+    minItems: 1
+    maxItems: 3
+    description:
+      EIC controller can support maximum 3 banks which has its own
+      address base.
+
+  gpio-controller: true
+
+  "#gpio-cells":
+    const: 2
+
+  interrupt-controller: true
+
+  "#interrupt-cells":
+    const: 2
+
+  interrupts:
+    maxItems: 1
+    description:
+      The interrupt shared by all GPIO lines for this controller.
+
+required:
+  - compatible
+  - reg
+  - gpio-controller
+  - "#gpio-cells"
+  - interrupt-controller
+  - "#interrupt-cells"
+  - interrupts
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    soc {
+        #address-cells = <2>;
+        #size-cells = <2>;
+
+        eic_debounce: gpio@40210000 {
+            compatible = "sprd,sc9860-eic-debounce";
+            reg = <0 0x40210000 0 0x80>;
+            gpio-controller;
+            #gpio-cells = <2>;
+            interrupt-controller;
+            #interrupt-cells = <2>;
+            interrupts = <GIC_SPI 52 IRQ_TYPE_LEVEL_HIGH>;
+        };
+    };
+
+    sc2730_pmic {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        pmic_eic: gpio@300 {
+            compatible = "sprd,sc2731-eic";
+            reg = <0x300>;
+            interrupt-parent = <&sc2731_pmic>;
+            interrupts = <5 IRQ_TYPE_LEVEL_HIGH>;
+            gpio-controller;
+            #gpio-cells = <2>;
+            interrupt-controller;
+            #interrupt-cells = <2>;
+        };
+    };
+...
-- 
2.25.1

[PATCH V2 3/3] dt-bindings: gpio: Add compatible string to support Unisoc UMS512

[Chunyan Zhang]

From: Chunyan Zhang <chunyan.zhang@unisoc.com>

UMS512 use the same GPIO and EIC controller IP with SC9860.

Signed-off-by: Chunyan Zhang <chunyan.zhang@unisoc.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
---
 .../bindings/gpio/sprd,gpio-eic.yaml          | 33 +++++++++++++++----
 .../devicetree/bindings/gpio/sprd,gpio.yaml   |  7 +++-
 2 files changed, 33 insertions(+), 7 deletions(-)

diff --git a/Documentation/devicetree/bindings/gpio/sprd,gpio-eic.yaml b/Documentation/devicetree/bindings/gpio/sprd,gpio-eic.yaml
index c288a8dd44c8..3b7d338d44fb 100644
--- a/Documentation/devicetree/bindings/gpio/sprd,gpio-eic.yaml
+++ b/Documentation/devicetree/bindings/gpio/sprd,gpio-eic.yaml
@@ -42,12 +42,33 @@ description:
 
 properties:
   compatible:
-    enum:
-      - sprd,sc9860-eic-debounce
-      - sprd,sc9860-eic-latch
-      - sprd,sc9860-eic-async
-      - sprd,sc9860-eic-sync
-      - sprd,sc2731-eic
+    oneOf:
+      - enum:
+          - sprd,sc9860-eic-debounce
+          - sprd,sc9860-eic-latch
+          - sprd,sc9860-eic-async
+          - sprd,sc9860-eic-sync
+          - sprd,sc2731-eic
+      - items:
+          - enum:
+              - sprd,ums512-eic-debounce
+          - const: sprd,sc9860-eic-debounce
+      - items:
+          - enum:
+              - sprd,ums512-eic-latch
+          - const: sprd,sc9860-eic-latch
+      - items:
+          - enum:
+              - sprd,ums512-eic-async
+          - const: sprd,sc9860-eic-async
+      - items:
+          - enum:
+              - sprd,ums512-eic-sync
+          - const: sprd,sc9860-eic-sync
+      - items:
+          - enum:
+              - sprd,sc2730-eic
+          - const: sprd,sc2731-eic
 
   reg:
     minItems: 1
diff --git a/Documentation/devicetree/bindings/gpio/sprd,gpio.yaml b/Documentation/devicetree/bindings/gpio/sprd,gpio.yaml
index c0cd1ed9809b..a1ecb2b96a76 100644
--- a/Documentation/devicetree/bindings/gpio/sprd,gpio.yaml
+++ b/Documentation/devicetree/bindings/gpio/sprd,gpio.yaml
@@ -19,7 +19,12 @@ description:
 
 properties:
   compatible:
-    const: sprd,sc9860-gpio
+    oneOf:
+      - const: sprd,sc9860-gpio
+      - items:
+          - enum:
+              - sprd,ums512-gpio
+          - const: sprd,sc9860-gpio
 
   reg:
     maxItems: 1
-- 
2.25.1

Re: [PATCH V2 1/3] dt-bindings: gpio: Convert Unisoc GPIO controller binding to yaml

[Krzysztof Kozlowski]

On 30/09/2022 10:24, Chunyan Zhang wrote:
> From: Chunyan Zhang <chunyan.zhang@unisoc.com>
> 
> Convert the Unisoc gpio controller binding to DT schema format.
> 
> Signed-off-by: Chunyan Zhang <chunyan.zhang@unisoc.com>



Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

Best regards,
Krzysztof

Re: [PATCH V2 2/3] dt-bindings: gpio: Convert Unisoc EIC controller binding to yaml

[Krzysztof Kozlowski]

On 30/09/2022 10:24, Chunyan Zhang wrote:
> From: Chunyan Zhang <chunyan.zhang@unisoc.com>
> 
> Convert the Unisoc EIC controller binding to DT schema format.
> Update the maxItems of 'reg' property, since the current gpio-eic-sprd
> driver supports 3 reg items. Also remove three redundant examples.
> 
> Signed-off-by: Chunyan Zhang <chunyan.zhang@unisoc.com>
> ---
>  .../bindings/gpio/gpio-eic-sprd.txt           |  97 --------------
>  .../bindings/gpio/sprd,gpio-eic.yaml          | 119 ++++++++++++++++++
>  2 files changed, 119 insertions(+), 97 deletions(-)
>  delete mode 100644 Documentation/devicetree/bindings/gpio/gpio-eic-sprd.txt
>  create mode 100644 Documentation/devicetree/bindings/gpio/sprd,gpio-eic.yaml
> 
> diff --git a/Documentation/devicetree/bindings/gpio/gpio-eic-sprd.txt b/Documentation/devicetree/bindings/gpio/gpio-eic-sprd.txt
> deleted file mode 100644
> index 54040a2bfe3a..000000000000
> --- a/Documentation/devicetree/bindings/gpio/gpio-eic-sprd.txt
> +++ /dev/null
> @@ -1,97 +0,0 @@
> -Spreadtrum EIC controller bindings
> -
> -The EIC is the abbreviation of external interrupt controller, which can
> -be used only in input mode. The Spreadtrum platform has 2 EIC controllers,
> -one is in digital chip, and another one is in PMIC. The digital chip EIC
> -controller contains 4 sub-modules: EIC-debounce, EIC-latch, EIC-async and
> -EIC-sync. But the PMIC EIC controller contains only one EIC-debounce sub-
> -module.
> -
> -The EIC-debounce sub-module provides up to 8 source input signal
> -connections. A debounce mechanism is used to capture the input signals'
> -stable status (millisecond resolution) and a single-trigger mechanism
> -is introduced into this sub-module to enhance the input event detection
> -reliability. In addition, this sub-module's clock can be shut off
> -automatically to reduce power dissipation. Moreover the debounce range
> -is from 1ms to 4s with a step size of 1ms. The input signal will be
> -ignored if it is asserted for less than 1 ms.
> -
> -The EIC-latch sub-module is used to latch some special power down signals
> -and generate interrupts, since the EIC-latch does not depend on the APB
> -clock to capture signals.
> -
> -The EIC-async sub-module uses a 32kHz clock to capture the short signals
> -(microsecond resolution) to generate interrupts by level or edge trigger.
> -
> -The EIC-sync is similar with GPIO's input function, which is a synchronized
> -signal input register. It can generate interrupts by level or edge trigger
> -when detecting input signals.
> -
> -Required properties:
> -- compatible: Should be one of the following:
> -  "sprd,sc9860-eic-debounce",
> -  "sprd,sc9860-eic-latch",
> -  "sprd,sc9860-eic-async",
> -  "sprd,sc9860-eic-sync",
> -  "sprd,sc2731-eic".
> -- reg: Define the base and range of the I/O address space containing
> -  the GPIO controller registers.
> -- gpio-controller: Marks the device node as a GPIO controller.
> -- #gpio-cells: Should be <2>. The first cell is the gpio number and
> -  the second cell is used to specify optional parameters.
> -- interrupt-controller: Marks the device node as an interrupt controller.
> -- #interrupt-cells: Should be <2>. Specifies the number of cells needed
> -  to encode interrupt source.
> -- interrupts: Should be the port interrupt shared by all the gpios.
> -
> -Example:
> -	eic_debounce: gpio@40210000 {
> -		compatible = "sprd,sc9860-eic-debounce";
> -		reg = <0 0x40210000 0 0x80>;
> -		gpio-controller;
> -		#gpio-cells = <2>;
> -		interrupt-controller;
> -		#interrupt-cells = <2>;
> -		interrupts = <GIC_SPI 52 IRQ_TYPE_LEVEL_HIGH>;
> -	};
> -
> -	eic_latch: gpio@40210080 {
> -		compatible = "sprd,sc9860-eic-latch";
> -		reg = <0 0x40210080 0 0x20>;
> -		gpio-controller;
> -		#gpio-cells = <2>;
> -		interrupt-controller;
> -		#interrupt-cells = <2>;
> -		interrupts = <GIC_SPI 52 IRQ_TYPE_LEVEL_HIGH>;
> -	};
> -
> -	eic_async: gpio@402100a0 {
> -		compatible = "sprd,sc9860-eic-async";
> -		reg = <0 0x402100a0 0 0x20>;
> -		gpio-controller;
> -		#gpio-cells = <2>;
> -		interrupt-controller;
> -		#interrupt-cells = <2>;
> -		interrupts = <GIC_SPI 52 IRQ_TYPE_LEVEL_HIGH>;
> -	};
> -
> -	eic_sync: gpio@402100c0 {
> -		compatible = "sprd,sc9860-eic-sync";
> -		reg = <0 0x402100c0 0 0x20>;
> -		gpio-controller;
> -		#gpio-cells = <2>;
> -		interrupt-controller;
> -		#interrupt-cells = <2>;
> -		interrupts = <GIC_SPI 52 IRQ_TYPE_LEVEL_HIGH>;
> -	};
> -
> -	pmic_eic: gpio@300 {
> -		compatible = "sprd,sc2731-eic";
> -		reg = <0x300>;
> -		interrupt-parent = <&sc2731_pmic>;
> -		interrupts = <5 IRQ_TYPE_LEVEL_HIGH>;
> -		gpio-controller;
> -		#gpio-cells = <2>;
> -		interrupt-controller;
> -		#interrupt-cells = <2>;
> -	};
> diff --git a/Documentation/devicetree/bindings/gpio/sprd,gpio-eic.yaml b/Documentation/devicetree/bindings/gpio/sprd,gpio-eic.yaml
> new file mode 100644
> index 000000000000..c288a8dd44c8
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/gpio/sprd,gpio-eic.yaml
> @@ -0,0 +1,119 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +# Copyright 2022 Unisoc Inc.
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/gpio/sprd,gpio-eic.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Unisoc EIC controller
> +
> +maintainers:
> +  - Orson Zhai <orsonzhai@gmail.com>
> +  - Baolin Wang <baolin.wang7@gmail.com>
> +  - Chunyan Zhang <zhang.lyra@gmail.com>
> +
> +description:
> +  The EIC is the abbreviation of external interrupt controller, which can
> +  be used only in input mode. The Spreadtrum platform has 2 EIC controllers,
> +  one is in digital chip, and another one is in PMIC. The digital chip EIC
> +  controller contains 4 sub-modules, i.e. EIC-debounce, EIC-latch, EIC-async and
> +  EIC-sync. But the PMIC EIC controller contains only one EIC-debounce sub-
> +  module.
> +
> +  The EIC-debounce sub-module provides up to 8 source input signal
> +  connections. A debounce mechanism is used to capture the input signals'
> +  stable status (millisecond resolution) and a single-trigger mechanism
> +  is introduced into this sub-module to enhance the input event detection
> +  reliability. In addition, this sub-module's clock can be shut off
> +  automatically to reduce power dissipation. Moreover the debounce range
> +  is from 1ms to 4s with a step size of 1ms. The input signal will be
> +  ignored if it is asserted for less than 1 ms.
> +
> +  The EIC-latch sub-module is used to latch some special power down signals
> +  and generate interrupts, since the EIC-latch does not depend on the APB
> +  clock to capture signals.
> +
> +  The EIC-async sub-module uses a 32kHz clock to capture the short signals
> +  (microsecond resolution) to generate interrupts by level or edge trigger.
> +
> +  The EIC-sync is similar with GPIO's input function, which is a synchronized
> +  signal input register. It can generate interrupts by level or edge trigger
> +  when detecting input signals.
> +
> +properties:
> +  compatible:
> +    enum:
> +      - sprd,sc9860-eic-debounce
> +      - sprd,sc9860-eic-latch
> +      - sprd,sc9860-eic-async
> +      - sprd,sc9860-eic-sync
> +      - sprd,sc2731-eic
> +
> +  reg:
> +    minItems: 1
> +    maxItems: 3
> +    description:
> +      EIC controller can support maximum 3 banks which has its own
> +      address base.
> +
> +  gpio-controller: true
> +
> +  "#gpio-cells":
> +    const: 2
> +
> +  interrupt-controller: true
> +
> +  "#interrupt-cells":
> +    const: 2
> +
> +  interrupts:
> +    maxItems: 1
> +    description:
> +      The interrupt shared by all GPIO lines for this controller.
> +
> +required:
> +  - compatible
> +  - reg
> +  - gpio-controller
> +  - "#gpio-cells"
> +  - interrupt-controller
> +  - "#interrupt-cells"
> +  - interrupts
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/interrupt-controller/arm-gic.h>
> +
> +    soc {
> +        #address-cells = <2>;
> +        #size-cells = <2>;
> +
> +        eic_debounce: gpio@40210000 {
> +            compatible = "sprd,sc9860-eic-debounce";
> +            reg = <0 0x40210000 0 0x80>;
> +            gpio-controller;
> +            #gpio-cells = <2>;
> +            interrupt-controller;
> +            #interrupt-cells = <2>;
> +            interrupts = <GIC_SPI 52 IRQ_TYPE_LEVEL_HIGH>;
> +        };
> +    };
> +
> +    sc2730_pmic {

If you insisted to keep it, at least should be correct, so just pmic.

> +        #address-cells = <1>;
> +        #size-cells = <0>;
> +
> +        pmic_eic: gpio@300 {

It's exactly the same example as above - all same properties. Drop it or
bring some differences.


Best regards,
Krzysztof

Re: [PATCH V2 2/3] dt-bindings: gpio: Convert Unisoc EIC controller binding to yaml

[Rob Herring]

On Fri, Sep 30, 2022 at 04:24:04PM +0800, Chunyan Zhang wrote:
> From: Chunyan Zhang <chunyan.zhang@unisoc.com>
> 
> Convert the Unisoc EIC controller binding to DT schema format.
> Update the maxItems of 'reg' property, since the current gpio-eic-sprd
> driver supports 3 reg items. Also remove three redundant examples.
> 
> Signed-off-by: Chunyan Zhang <chunyan.zhang@unisoc.com>
> ---
>  .../bindings/gpio/gpio-eic-sprd.txt           |  97 --------------
>  .../bindings/gpio/sprd,gpio-eic.yaml          | 119 ++++++++++++++++++
>  2 files changed, 119 insertions(+), 97 deletions(-)
>  delete mode 100644 Documentation/devicetree/bindings/gpio/gpio-eic-sprd.txt
>  create mode 100644 Documentation/devicetree/bindings/gpio/sprd,gpio-eic.yaml
> 
> diff --git a/Documentation/devicetree/bindings/gpio/gpio-eic-sprd.txt b/Documentation/devicetree/bindings/gpio/gpio-eic-sprd.txt
> deleted file mode 100644
> index 54040a2bfe3a..000000000000
> --- a/Documentation/devicetree/bindings/gpio/gpio-eic-sprd.txt
> +++ /dev/null
> @@ -1,97 +0,0 @@
> -Spreadtrum EIC controller bindings
> -
> -The EIC is the abbreviation of external interrupt controller, which can
> -be used only in input mode. The Spreadtrum platform has 2 EIC controllers,
> -one is in digital chip, and another one is in PMIC. The digital chip EIC
> -controller contains 4 sub-modules: EIC-debounce, EIC-latch, EIC-async and
> -EIC-sync. But the PMIC EIC controller contains only one EIC-debounce sub-
> -module.
> -
> -The EIC-debounce sub-module provides up to 8 source input signal
> -connections. A debounce mechanism is used to capture the input signals'
> -stable status (millisecond resolution) and a single-trigger mechanism
> -is introduced into this sub-module to enhance the input event detection
> -reliability. In addition, this sub-module's clock can be shut off
> -automatically to reduce power dissipation. Moreover the debounce range
> -is from 1ms to 4s with a step size of 1ms. The input signal will be
> -ignored if it is asserted for less than 1 ms.
> -
> -The EIC-latch sub-module is used to latch some special power down signals
> -and generate interrupts, since the EIC-latch does not depend on the APB
> -clock to capture signals.
> -
> -The EIC-async sub-module uses a 32kHz clock to capture the short signals
> -(microsecond resolution) to generate interrupts by level or edge trigger.
> -
> -The EIC-sync is similar with GPIO's input function, which is a synchronized
> -signal input register. It can generate interrupts by level or edge trigger
> -when detecting input signals.
> -
> -Required properties:
> -- compatible: Should be one of the following:
> -  "sprd,sc9860-eic-debounce",
> -  "sprd,sc9860-eic-latch",
> -  "sprd,sc9860-eic-async",
> -  "sprd,sc9860-eic-sync",
> -  "sprd,sc2731-eic".
> -- reg: Define the base and range of the I/O address space containing
> -  the GPIO controller registers.
> -- gpio-controller: Marks the device node as a GPIO controller.
> -- #gpio-cells: Should be <2>. The first cell is the gpio number and
> -  the second cell is used to specify optional parameters.
> -- interrupt-controller: Marks the device node as an interrupt controller.
> -- #interrupt-cells: Should be <2>. Specifies the number of cells needed
> -  to encode interrupt source.
> -- interrupts: Should be the port interrupt shared by all the gpios.
> -
> -Example:
> -	eic_debounce: gpio@40210000 {
> -		compatible = "sprd,sc9860-eic-debounce";
> -		reg = <0 0x40210000 0 0x80>;
> -		gpio-controller;
> -		#gpio-cells = <2>;
> -		interrupt-controller;
> -		#interrupt-cells = <2>;
> -		interrupts = <GIC_SPI 52 IRQ_TYPE_LEVEL_HIGH>;
> -	};
> -
> -	eic_latch: gpio@40210080 {
> -		compatible = "sprd,sc9860-eic-latch";
> -		reg = <0 0x40210080 0 0x20>;
> -		gpio-controller;
> -		#gpio-cells = <2>;
> -		interrupt-controller;
> -		#interrupt-cells = <2>;
> -		interrupts = <GIC_SPI 52 IRQ_TYPE_LEVEL_HIGH>;
> -	};
> -
> -	eic_async: gpio@402100a0 {
> -		compatible = "sprd,sc9860-eic-async";
> -		reg = <0 0x402100a0 0 0x20>;
> -		gpio-controller;
> -		#gpio-cells = <2>;
> -		interrupt-controller;
> -		#interrupt-cells = <2>;
> -		interrupts = <GIC_SPI 52 IRQ_TYPE_LEVEL_HIGH>;
> -	};
> -
> -	eic_sync: gpio@402100c0 {
> -		compatible = "sprd,sc9860-eic-sync";
> -		reg = <0 0x402100c0 0 0x20>;
> -		gpio-controller;
> -		#gpio-cells = <2>;
> -		interrupt-controller;
> -		#interrupt-cells = <2>;
> -		interrupts = <GIC_SPI 52 IRQ_TYPE_LEVEL_HIGH>;
> -	};
> -
> -	pmic_eic: gpio@300 {
> -		compatible = "sprd,sc2731-eic";
> -		reg = <0x300>;
> -		interrupt-parent = <&sc2731_pmic>;
> -		interrupts = <5 IRQ_TYPE_LEVEL_HIGH>;
> -		gpio-controller;
> -		#gpio-cells = <2>;
> -		interrupt-controller;
> -		#interrupt-cells = <2>;
> -	};
> diff --git a/Documentation/devicetree/bindings/gpio/sprd,gpio-eic.yaml b/Documentation/devicetree/bindings/gpio/sprd,gpio-eic.yaml
> new file mode 100644
> index 000000000000..c288a8dd44c8
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/gpio/sprd,gpio-eic.yaml
> @@ -0,0 +1,119 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +# Copyright 2022 Unisoc Inc.
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/gpio/sprd,gpio-eic.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Unisoc EIC controller
> +
> +maintainers:
> +  - Orson Zhai <orsonzhai@gmail.com>
> +  - Baolin Wang <baolin.wang7@gmail.com>
> +  - Chunyan Zhang <zhang.lyra@gmail.com>
> +
> +description:

If you want the formatting maintained, you need '|' on the end.

> +  The EIC is the abbreviation of external interrupt controller, which can
> +  be used only in input mode. The Spreadtrum platform has 2 EIC controllers,
> +  one is in digital chip, and another one is in PMIC. The digital chip EIC
> +  controller contains 4 sub-modules, i.e. EIC-debounce, EIC-latch, EIC-async and
> +  EIC-sync. But the PMIC EIC controller contains only one EIC-debounce sub-
> +  module.
> +
> +  The EIC-debounce sub-module provides up to 8 source input signal
> +  connections. A debounce mechanism is used to capture the input signals'
> +  stable status (millisecond resolution) and a single-trigger mechanism
> +  is introduced into this sub-module to enhance the input event detection
> +  reliability. In addition, this sub-module's clock can be shut off
> +  automatically to reduce power dissipation. Moreover the debounce range
> +  is from 1ms to 4s with a step size of 1ms. The input signal will be
> +  ignored if it is asserted for less than 1 ms.
> +
> +  The EIC-latch sub-module is used to latch some special power down signals
> +  and generate interrupts, since the EIC-latch does not depend on the APB
> +  clock to capture signals.
> +
> +  The EIC-async sub-module uses a 32kHz clock to capture the short signals
> +  (microsecond resolution) to generate interrupts by level or edge trigger.
> +
> +  The EIC-sync is similar with GPIO's input function, which is a synchronized
> +  signal input register. It can generate interrupts by level or edge trigger
> +  when detecting input signals.
> +
> +properties:
> +  compatible:
> +    enum:
> +      - sprd,sc9860-eic-debounce
> +      - sprd,sc9860-eic-latch
> +      - sprd,sc9860-eic-async
> +      - sprd,sc9860-eic-sync
> +      - sprd,sc2731-eic
> +
> +  reg:
> +    minItems: 1
> +    maxItems: 3
> +    description:
> +      EIC controller can support maximum 3 banks which has its own
> +      address base.
> +
> +  gpio-controller: true
> +
> +  "#gpio-cells":
> +    const: 2
> +
> +  interrupt-controller: true
> +
> +  "#interrupt-cells":
> +    const: 2
> +
> +  interrupts:
> +    maxItems: 1
> +    description:
> +      The interrupt shared by all GPIO lines for this controller.
> +
> +required:
> +  - compatible
> +  - reg
> +  - gpio-controller
> +  - "#gpio-cells"
> +  - interrupt-controller
> +  - "#interrupt-cells"
> +  - interrupts
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/interrupt-controller/arm-gic.h>
> +
> +    soc {
> +        #address-cells = <2>;
> +        #size-cells = <2>;
> +
> +        eic_debounce: gpio@40210000 {
> +            compatible = "sprd,sc9860-eic-debounce";
> +            reg = <0 0x40210000 0 0x80>;
> +            gpio-controller;
> +            #gpio-cells = <2>;
> +            interrupt-controller;
> +            #interrupt-cells = <2>;
> +            interrupts = <GIC_SPI 52 IRQ_TYPE_LEVEL_HIGH>;
> +        };
> +    };
> +
> +    sc2730_pmic {
> +        #address-cells = <1>;
> +        #size-cells = <0>;
> +
> +        pmic_eic: gpio@300 {
> +            compatible = "sprd,sc2731-eic";
> +            reg = <0x300>;
> +            interrupt-parent = <&sc2731_pmic>;
> +            interrupts = <5 IRQ_TYPE_LEVEL_HIGH>;
> +            gpio-controller;
> +            #gpio-cells = <2>;
> +            interrupt-controller;
> +            #interrupt-cells = <2>;
> +        };
> +    };
> +...
> -- 
> 2.25.1
> 
> 

Re: [PATCH V2 2/3] dt-bindings: gpio: Convert Unisoc EIC controller binding to yaml

[Chunyan Zhang]

On Fri, 30 Sept 2022 at 19:09, Krzysztof Kozlowski
<krzysztof.kozlowski@linaro.org> wrote:
>
> On 30/09/2022 10:24, Chunyan Zhang wrote:
> > From: Chunyan Zhang <chunyan.zhang@unisoc.com>
> >
> > Convert the Unisoc EIC controller binding to DT schema format.
> > Update the maxItems of 'reg' property, since the current gpio-eic-sprd
> > driver supports 3 reg items. Also remove three redundant examples.
> >
> > Signed-off-by: Chunyan Zhang <chunyan.zhang@unisoc.com>
> > ---
> >  .../bindings/gpio/gpio-eic-sprd.txt           |  97 --------------
> >  .../bindings/gpio/sprd,gpio-eic.yaml          | 119 ++++++++++++++++++
> >  2 files changed, 119 insertions(+), 97 deletions(-)
> >  delete mode 100644 Documentation/devicetree/bindings/gpio/gpio-eic-sprd.txt
> >  create mode 100644 Documentation/devicetree/bindings/gpio/sprd,gpio-eic.yaml

[snip]

> > +
> > +examples:
> > +  - |
> > +    #include <dt-bindings/interrupt-controller/arm-gic.h>
> > +
> > +    soc {
> > +        #address-cells = <2>;
> > +        #size-cells = <2>;
> > +
> > +        eic_debounce: gpio@40210000 {
> > +            compatible = "sprd,sc9860-eic-debounce";
> > +            reg = <0 0x40210000 0 0x80>;
> > +            gpio-controller;
> > +            #gpio-cells = <2>;
> > +            interrupt-controller;
> > +            #interrupt-cells = <2>;
> > +            interrupts = <GIC_SPI 52 IRQ_TYPE_LEVEL_HIGH>;
> > +        };
> > +    };
> > +
> > +    sc2730_pmic {
>
> If you insisted to keep it, at least should be correct, so just pmic.
>
> > +        #address-cells = <1>;
> > +        #size-cells = <0>;
> > +
> > +        pmic_eic: gpio@300 {
>
> It's exactly the same example as above - all same properties. Drop it or
> bring some differences.

The differences are on #address-cells and #size-cells.

Thanks for the review,
Chunyan

Re: [PATCH V2 2/3] dt-bindings: gpio: Convert Unisoc EIC controller binding to yaml

[Krzysztof Kozlowski]

On 08/10/2022 04:57, Chunyan Zhang wrote:
>>> +        eic_debounce: gpio@40210000 {
>>> +            compatible = "sprd,sc9860-eic-debounce";
>>> +            reg = <0 0x40210000 0 0x80>;
>>> +            gpio-controller;
>>> +            #gpio-cells = <2>;
>>> +            interrupt-controller;
>>> +            #interrupt-cells = <2>;
>>> +            interrupts = <GIC_SPI 52 IRQ_TYPE_LEVEL_HIGH>;
>>> +        };
>>> +    };
>>> +
>>> +    sc2730_pmic {
>>
>> If you insisted to keep it, at least should be correct, so just pmic.
>>
>>> +        #address-cells = <1>;
>>> +        #size-cells = <0>;
>>> +
>>> +        pmic_eic: gpio@300 {
>>
>> It's exactly the same example as above - all same properties. Drop it or
>> bring some differences.
> 
> The differences are on #address-cells and #size-cells.
> 

Which don't really matter...

Best regards,
Krzysztof

Re: [PATCH V2 2/3] dt-bindings: gpio: Convert Unisoc EIC controller binding to yaml

[Chunyan Zhang]

On Sun, 9 Oct 2022 at 23:17, Krzysztof Kozlowski
<krzysztof.kozlowski@linaro.org> wrote:
>
> On 08/10/2022 04:57, Chunyan Zhang wrote:
> >>> +        eic_debounce: gpio@40210000 {
> >>> +            compatible = "sprd,sc9860-eic-debounce";
> >>> +            reg = <0 0x40210000 0 0x80>;
> >>> +            gpio-controller;
> >>> +            #gpio-cells = <2>;
> >>> +            interrupt-controller;
> >>> +            #interrupt-cells = <2>;
> >>> +            interrupts = <GIC_SPI 52 IRQ_TYPE_LEVEL_HIGH>;
> >>> +        };
> >>> +    };
> >>> +
> >>> +    sc2730_pmic {
> >>
> >> If you insisted to keep it, at least should be correct, so just pmic.
> >>
> >>> +        #address-cells = <1>;
> >>> +        #size-cells = <0>;
> >>> +
> >>> +        pmic_eic: gpio@300 {
> >>
> >> It's exactly the same example as above - all same properties. Drop it or
> >> bring some differences.
> >
> > The differences are on #address-cells and #size-cells.
> >
>
> Which don't really matter...

Alright, will drop it in the next version.

>
> Best regards,
> Krzysztof
>