Signed-off-by: John Crispin <blogic@xxxxxxxxxxx>
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.../bindings/pinctrl/ralink,rt2880-pinmux.txt | 74 ++++++++++++++++++++
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create mode 100644 Documentation/devicetree/bindings/pinctrl/ralink,rt2880-pinmux.txt
diff --git a/Documentation/devicetree/bindings/pinctrl/ralink,rt2880-pinmux.txt b/Documentation/devicetree/bindings/pinctrl/ralink,rt2880-pinmux.txt
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+Ralink rt2880 pinmux controller
+
+Required properties:
+- compatible: "lantiq,rt2880-pinmux"
+- reg: Should contain the physical address and length of the gpio/pinmux
+ register range
+
+The rt2880 pinmux can only set the muxing of pin groups. muxing indiviual pins
+is not supported. There is no pinconf support.
+
+Definition of mux function groups:
+
+Required subnode-properties:
+- ralink,group : An array of strings. Each string contains the name of a group.
+ Valid values for these names are listed below.
+- ralink,function: A string containing the name of the function to mux to the
+ group. Valid values for function names are listed below.
+
+Valid values for group and function names:
+ mux groups (rt2880):
+ i2c, spi, uartlite, jtag, mdio, sdram, pci
+
+ mux functions (rt2880):
+ gpio, i2c, spi, uartlite, jtag, mdio, sdram, pci
+
+ mux groups (rt3050):
+ i2c, spi, uartf, uartlite, jtag, mdio, rgmii, sdram
+
+ mux functions (rt3050):
+ gpio, i2c, spi, uartf, pcm uartf, pcm i2s, i2s uartf, pcm gpio, gpio uartf,
+ gpio i2s, uartlite, jtag, mdio, sdram
+
+ mux groups (rt3352):
+ i2c, spi, uartf, uartlite, jtag, mdio, rgmii, lna, pna, led
+
+ mux functions (rt3050):
+ gpio, i2c, spi, uartf, pcm uartf, pcm i2s, i2s uartf, pcm gpio, gpio uartf,
+ gpio i2s, uartlite, jtag, mdio, lna, pna, led
+
+ mux groups (rt5350):
+ i2c, spi, uartf, uartlite, jtag, pna, led, spi cs1
+
+ mux functions (rt5350):
+ gpio, i2c, spi, uartf, pcm uartf, pcm i2s, i2s uartf, pcm gpio, gpio uartf,
+ gpio i2s, uartlite, jtag, spi_cs1, wdg
+
+
+Example:
+ pinctrl {
+ compatible = "ralink,rt2880-pinmux";
+
+ pinctrl-names = "default";
+ pinctrl-0 = <&state_default>;
+
+ state_default: pinctrl0 {
+ sdram {
+ ralink,group = "sdram";
+ ralink,function = "sdram";
+ };
+ };
+
+ spi_pins: spi {
+ spi {
+ ralink,group = "spi";
+ ralink,function = "spi";
+ };
+ };
+ uartlite_pins: uartlite {
+ uart {
+ ralink,group = "uartlite";
+ ralink,function = "uartlite";
+ };
+ };
+ };
--
1.7.10.4
