linux-kernel - [PATCH 05/10] dt-bindings: gpio: Add gpio nodes for Actions S900 SoC

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Date:   Wed, 28 Feb 2018 23:19:01 +0530
From:   Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
To:     linus.walleij@...aro.org, robh+dt@...nel.org, afaerber@...e.de
Cc:     liuwei@...ions-semi.com, mp-cs@...ions-semi.com,
        96boards@...obotics.com, devicetree@...r.kernel.org,
        daniel.thompson@...aro.org, amit.kucheria@...aro.org,
        linux-arm-kernel@...ts.infradead.org, linux-gpio@...r.kernel.org,
        linux-kernel@...r.kernel.org, hzhang@...obotics.com,
        bdong@...obotics.com, manivannanece23@...il.com,
        Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
Subject: [PATCH 05/10] dt-bindings: gpio: Add gpio nodes for Actions S900 SoC

Add gpio nodes for Actions Semi S900 SoC.

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
---
 .../devicetree/bindings/gpio/actions,owl-gpio.txt  | 95 ++++++++++++++++++++++
 1 file changed, 95 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/gpio/actions,owl-gpio.txt

diff --git a/Documentation/devicetree/bindings/gpio/actions,owl-gpio.txt b/Documentation/devicetree/bindings/gpio/actions,owl-gpio.txt
new file mode 100644
index 000000000000..d2939ca6cfaf
--- /dev/null
+++ b/Documentation/devicetree/bindings/gpio/actions,owl-gpio.txt
@@ -0,0 +1,95 @@
+* Actions Semi OWL GPIO controller bindings
+
+The GPIOs are organized as individual banks/ports with variable number
+of GPIOs. Each bank is represented as an individual GPIO controller.
+
+Required properties:
+- compatible            : Should be "actions,s900-gpio"
+- reg                   : Address and range of 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      : Specifies the number of cells needed to encode an
+                          interrupt.  Shall be set to 2.  The first cell
+                          defines the interrupt number, the second encodes
+                          the trigger flags described in
+                          bindings/interrupt-controller/interrupts.txt
+
+Optional properties:
+- gpio-ranges           : Mapping between GPIO and pinctrl
+
+Note: Each GPIO port should have an alias correctly numbered in "aliases"
+node.
+
+Examples:
+
+aliases {
+        gpio0 = &gpioa;
+        gpio1 = &gpiob;
+        gpio2 = &gpioc;
+        gpio3 = &gpiod;
+        gpio4 = &gpioe;
+        gpio5 = &gpiof;
+};
+
+       gpioa: gpioa@...b0000 {
+               compatible = "actions,s900-gpio";
+               reg = <0x0 0xe01b0000 0x0 0x1000>;
+               gpio-controller;
+               #gpio-cells = <2>;
+               gpio-ranges = <&pinctrl 0 0 32>;
+               interrupt-controller;
+               #interrupt-cells = <2>;
+       };
+
+       gpiob: gpiob@...b0000 {
+               compatible = "actions,s900-gpio";
+               reg = <0x0 0xe01b0000 0x0 0x1000>;
+               gpio-controller;
+               #gpio-cells = <2>;
+               gpio-ranges = <&pinctrl 0 32 32>;
+               interrupt-controller;
+               #interrupt-cells = <2>;
+       };
+
+       gpioc: gpioc@...b0000 {
+               compatible = "actions,s900-gpio";
+               reg = <0x0 0xe01b0000 0x0 0x1000>;
+               gpio-controller;
+               #gpio-cells = <2>;
+               gpio-ranges = <&pinctrl 0 64 12>;
+               interrupt-controller;
+               #interrupt-cells = <2>;
+       };
+
+       gpiod: gpiod@...b0000 {
+               compatible = "actions,s900-gpio";
+               reg = <0x0 0xe01b0000 0x0 0x1000>;
+               gpio-controller;
+               #gpio-cells = <2>;
+               gpio-ranges = <&pinctrl 0 76 30>;
+               interrupt-controller;
+               #interrupt-cells = <2>;
+       };
+
+       gpioe: gpioe@...b0000 {
+               compatible = "actions,s900-gpio";
+               reg = <0x0 0xe01b0000 0x0 0x1000>;
+               gpio-controller;
+               #gpio-cells = <2>;
+               gpio-ranges = <&pinctrl 0 106 32>;
+               interrupt-controller;
+               #interrupt-cells = <2>;
+       };
+
+       gpiof: gpiof@...b0000 {
+               compatible = "actions,s900-gpio";
+               reg = <0x0 0xe01b0000 0x0 0x1000>;
+               gpio-controller;
+               #gpio-cells = <2>;
+               gpio-ranges = <&pinctrl 0 138 8>;
+               interrupt-controller;
+               #interrupt-cells = <2>;
+       };
-- 
2.14.1