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[PATCH 1/2] Add DT bindings documentation for the max7360 mfd driver

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  [PATCH 1/2] Add DT bindings documentation for the max7360 mfd driver Valentin Sitdikov <valentin_sitdikov@mentor.com> - 2017-04-25 10:20 +0200
    Re: [PATCH 1/2] Add DT bindings documentation for the max7360 mfd  driver Rob Herring <robh@kernel.org> - 2017-04-28 21:30 +0200

#1630275 — [PATCH 1/2] Add DT bindings documentation for the max7360 mfd driver

Signed-off-by: Valentin Sitdikov <valentin_sitdikov@mentor.com>
Signed-off-by: Andrei Dranitca <Andrei_Dranitca@mentor.com>
---
 Documentation/devicetree/bindings/mfd/max7360.txt | 72 +++++++++++++++++++++++
 1 file changed, 72 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mfd/max7360.txt

diff --git a/Documentation/devicetree/bindings/mfd/max7360.txt b/Documentation/devicetree/bindings/mfd/max7360.txt
new file mode 100644
index 0000000..359073a
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/max7360.txt
@@ -0,0 +1,72 @@
+* Maxim MAX7360 multi-function device
+
+The Maxim MAX7360 is a multifunction device which includes
+64 key switches, eight LED drivers/GPIOs, PWM intensity control,
+and rotary switch control.
+
+Required properties:
+- compatible: Should be the following: "maxim,max7360"
+- reg: Specifies the i2c slave address of the max7360 block. It can be 0x38, 0x3a, 0x3c or 0x3e IIUC.
+
+Optional properties:
+- interrupt-parent: Specifies the phandle of the interrupt controller to which
+  the interrupts from MAX7360 are routed to.
+- interrupt-names: might be "int-shared" or list of "inti" and "intk"
+- interrupt-controller:  Identifies the device as an interrupt controller.
+- #interrupt-cells :  Number of cells to encode an interrupt source, shall be 1.
+
+Examples:
+
+Without subnodes:
+	max7360@38 {
+		compatible = "maxim,max7360";
+		reg = <0x38>;
+		interrupt-parent = <&gpio1>;
+		interrupts = <23 IRQ_TYPE_LEVEL_LOW>;
+		interrupt-names = "int-shared";
+		interrupt-controller;
+		#interrupt-cells = <0x1>;
+
+	};
+
+With subnodes:
+	max7360@38 {
+		compatible = "maxim,max7360";
+		reg = <0x38>;
+		interrupt-parent = <&gpio1>;
+		interrupts = <23 IRQ_TYPE_LEVEL_LOW>;
+		interrupt-names = "int-shared";
+		interrupt-controller;
+		#interrupt-cells = <0x1>;
+
+		max7360_gpio: max7360_gpio@0 {
+			compatible = "maxim,max7360-gpio";
+			gpio-controller;
+			#gpio-cells = <0x2>;
+			interrupt-controller;
+			#interrupt-cells = <0x2>;
+			interrupts = <0>;
+		};
+
+		max7360_keypad {
+			compatible = "maxim,max7360-keypad";
+			maxim,debounce_reg = /bits/ 8 <0xef>;
+			maxim,ports_reg = /bits/ 8 <0xae>;
+			linux,keymap = < MATRIX_KEY(0, 0, KEY_F5)
+					 MATRIX_KEY(1, 0, KEY_F4) >;
+			keypad,num-rows = <2>;
+			keypad,num-columns = <1>;
+			interrupts = <1>;
+		};
+
+		max7360_pwm: max7360_pwm {
+			compatible = "maxim,max7360-pwm";
+			#pwm-cells = <0x2>;
+		};
+
+		max7360_rotary_encoder {
+			compatible = "maxim,max7360-rotary";
+			interrupts = <2>;
+		};
+
+	};
-- 
2.9.3

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#1633101 — Re: [PATCH 1/2] Add DT bindings documentation for the max7360 mfd driver

On Tue, Apr 25, 2017 at 11:15:56AM +0300, Valentin Sitdikov wrote:

dt-bindings: mfd: ... for subject.

And you need a commit msg.

> Signed-off-by: Valentin Sitdikov <valentin_sitdikov@mentor.com>
> Signed-off-by: Andrei Dranitca <Andrei_Dranitca@mentor.com>
> ---
>  Documentation/devicetree/bindings/mfd/max7360.txt | 72 +++++++++++++++++++++++
>  1 file changed, 72 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/mfd/max7360.txt
> 
> diff --git a/Documentation/devicetree/bindings/mfd/max7360.txt b/Documentation/devicetree/bindings/mfd/max7360.txt
> new file mode 100644
> index 0000000..359073a
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mfd/max7360.txt
> @@ -0,0 +1,72 @@
> +* Maxim MAX7360 multi-function device
> +
> +The Maxim MAX7360 is a multifunction device which includes
> +64 key switches, eight LED drivers/GPIOs, PWM intensity control,
> +and rotary switch control.
> +
> +Required properties:
> +- compatible: Should be the following: "maxim,max7360"
> +- reg: Specifies the i2c slave address of the max7360 block. It can be 0x38, 0x3a, 0x3c or 0x3e IIUC.
> +
> +Optional properties:
> +- interrupt-parent: Specifies the phandle of the interrupt controller to which
> +  the interrupts from MAX7360 are routed to.
> +- interrupt-names: might be "int-shared" or list of "inti" and "intk"

I don't see anything in the datasheet about shared irq. If you connect 
both lines together on a board, just repeat the same connection.

> +- interrupt-controller:  Identifies the device as an interrupt controller.
> +- #interrupt-cells :  Number of cells to encode an interrupt source, shall be 1.
> +
> +Examples:
> +
> +Without subnodes:
> +	max7360@38 {
> +		compatible = "maxim,max7360";
> +		reg = <0x38>;
> +		interrupt-parent = <&gpio1>;
> +		interrupts = <23 IRQ_TYPE_LEVEL_LOW>;
> +		interrupt-names = "int-shared";
> +		interrupt-controller;
> +		#interrupt-cells = <0x1>;
> +
> +	};
> +
> +With subnodes:
> +	max7360@38 {
> +		compatible = "maxim,max7360";
> +		reg = <0x38>;
> +		interrupt-parent = <&gpio1>;
> +		interrupts = <23 IRQ_TYPE_LEVEL_LOW>;
> +		interrupt-names = "int-shared";
> +		interrupt-controller;
> +		#interrupt-cells = <0x1>;
> +
> +		max7360_gpio: max7360_gpio@0 {

Use generic names and no unit address when no reg prop:

gpio {

> +			compatible = "maxim,max7360-gpio";
> +			gpio-controller;
> +			#gpio-cells = <0x2>;
> +			interrupt-controller;
> +			#interrupt-cells = <0x2>;
> +			interrupts = <0>;
> +		};
> +
> +		max7360_keypad {

keypad {

> +			compatible = "maxim,max7360-keypad";
> +			maxim,debounce_reg = /bits/ 8 <0xef>;
> +			maxim,ports_reg = /bits/ 8 <0xae>;
> +			linux,keymap = < MATRIX_KEY(0, 0, KEY_F5)
> +					 MATRIX_KEY(1, 0, KEY_F4) >;
> +			keypad,num-rows = <2>;
> +			keypad,num-columns = <1>;
> +			interrupts = <1>;
> +		};
> +
> +		max7360_pwm: max7360_pwm {

pwm {

> +			compatible = "maxim,max7360-pwm";
> +			#pwm-cells = <0x2>;
> +		};
> +
> +		max7360_rotary_encoder {

rotary-encoder {

> +			compatible = "maxim,max7360-rotary";
> +			interrupts = <2>;
> +		};
> +
> +	};
> -- 
> 2.9.3
> 

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