Squashed 'dts/upstream/' content from commit aaba2d45dc2a
git-subtree-dir: dts/upstream
git-subtree-split: aaba2d45dc2a1b3bbb710f2a3808ee1c9f340abe
diff --git a/Bindings/gpio/gpio_lpc32xx.txt b/Bindings/gpio/gpio_lpc32xx.txt
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+++ b/Bindings/gpio/gpio_lpc32xx.txt
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+NXP LPC32xx SoC GPIO controller
+
+Required properties:
+- compatible: must be "nxp,lpc3220-gpio"
+- reg: Physical base address and length of the controller's registers.
+- gpio-controller: Marks the device node as a GPIO controller.
+- #gpio-cells: Should be 3:
+ 1) bank:
+ 0: GPIO P0
+ 1: GPIO P1
+ 2: GPIO P2
+ 3: GPIO P3
+ 4: GPI P3
+ 5: GPO P3
+ 2) pin number
+ 3) optional parameters:
+ - bit 0 specifies polarity (0 for normal, 1 for inverted)
+- reg: Index of the GPIO group
+
+Example:
+
+ gpio: gpio@40028000 {
+ compatible = "nxp,lpc3220-gpio";
+ reg = <0x40028000 0x1000>;
+ gpio-controller;
+ #gpio-cells = <3>; /* bank, pin, flags */
+ };
+
+ leds {
+ compatible = "gpio-leds";
+
+ led0 {
+ gpios = <&gpio 5 1 1>; /* GPO_P3 1, active low */
+ linux,default-trigger = "heartbeat";
+ default-state = "off";
+ };
+
+ led1 {
+ gpios = <&gpio 5 14 1>; /* GPO_P3 14, active low */
+ linux,default-trigger = "timer";
+ default-state = "off";
+ };
+ };