pinctrl: dt-bindings: add documentation for AP806 pin controllers

Document the device tree binding for the pin controllers found on the
Armada 7K and Armada 8K SoCs.

Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>

diff --git a/Documentation/devicetree/bindings/arm/marvell/ap806-system-controller.txt b/Documentation/devicetree/bindings/arm/marvell/ap806-system-controller.txt
index 888c50e0d64ffd3ef0c9be9f9f4b9caf0d57af57..4228d158fb315f266d5568f2bcf7be55cc2df57b 100644 (file)
--- a/Documentation/devicetree/bindings/arm/marvell/ap806-system-controller.txt
+++ b/Documentation/devicetree/bindings/arm/marvell/ap806-system-controller.txt
@@ -28,14 +28,53 @@ Required properties:
  - compatible: must be: "marvell,ap806-clock"
  - #clock-cells: must be set to 1
 
+Pinctrl:
+--------
+
+For common binding part and usage, refer to
+Documentation/devicetree/bindings/pinctrl/marvell,mvebu-pinctrl.txt.
+
+Required properties:
+- compatible must be "marvell,ap806-pinctrl",
+
+Available mpp pins/groups and functions:
+Note: brackets (x) are not part of the mpp name for marvell,function and given
+only for more detailed description in this document.
+
+name   pins    functions
+================================================================================
+mpp0   0       gpio, sdio(clk), spi0(clk)
+mpp1   1       gpio, sdio(cmd), spi0(miso)
+mpp2   2       gpio, sdio(d0), spi0(mosi)
+mpp3   3       gpio, sdio(d1), spi0(cs0n)
+mpp4   4       gpio, sdio(d2), i2c0(sda)
+mpp5   5       gpio, sdio(d3), i2c0(sdk)
+mpp6   6       gpio, sdio(ds)
+mpp7   7       gpio, sdio(d4), uart1(rxd)
+mpp8   8       gpio, sdio(d5), uart1(txd)
+mpp9   9       gpio, sdio(d6), spi0(cs1n)
+mpp10  10      gpio, sdio(d7)
+mpp11  11      gpio, uart0(txd)
+mpp12  12      gpio, sdio(pw_off), sdio(hw_rst)
+mpp13  13      gpio
+mpp14  14      gpio
+mpp15  15      gpio
+mpp16  16      gpio
+mpp17  17      gpio
+mpp18  18      gpio
+mpp19  19      gpio, uart0(rxd), sdio(pw_off)
+
 Example:
+ap_syscon: system-controller@6f4000 {
+       compatible = "syscon", "simple-mfd";
+       reg = <0x6f4000 0x1000>;
 
-       syscon: system-controller@6f4000 {
-               compatible = "syscon", "simple-mfd";
-               reg = <0x6f4000 0x1000>;
+       ap_clk: clock {
+               compatible = "marvell,ap806-clock";
+               #clock-cells = <1>;
+       };
 
-               ap_clk: clock {
-                       compatible = "marvell,ap806-clock";
-                       #clock-cells = <1>;
-               };
+       ap_pinctrl: pinctrl {
+               compatible = "marvell,ap806-pinctrl";
        };
+};