dt-bindings: pwm: pwm-at91: Add PWM bindings for A5D2
Document the bindings needed for the PWM device on the SAMA5D2.
Signed-off-by: Dan Sneddon <dan.sneddon@microchip.com>
diff --git a/doc/device-tree-bindings/pwm/pwm-at91.txt b/doc/device-tree-bindings/pwm/pwm-at91.txt
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+Microchip AT91 PWM controller for SAMA5D2
+
+Required properties:
+ - compatible: Should be "atmel,sama5d2-pwm"
+ - reg: Physical base address and length of the controller's registers.
+ - clocks: Should contain a clock identifier for the PWM's parent clock.
+ - #pwm-cells: Should be 3.
+
+Example:
+
+pwm0: pwm@f802c000 {
+ compatible = "atmel,sama5d2-pwm";
+ reg = <0xf802c000 0x4000>;
+ clocks = <&pwm_clk>;
+ #pwm-cells = <3>;
+};