Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / Documentation / devicetree / bindings / pwm / img-pwm.txt

diff --git a/kernel/Documentation/devicetree/bindings/pwm/img-pwm.txt b/kernel/Documentation/devicetree/bindings/pwm/img-pwm.txt
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+++ b/kernel/Documentation/devicetree/bindings/pwm/img-pwm.txt
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+*Imagination Technologies PWM DAC driver
+
+Required properties:
+  - compatible: Should be "img,pistachio-pwm"
+  - reg: Should contain physical base address and length of pwm registers.
+  - clocks: Must contain an entry for each entry in clock-names.
+       See ../clock/clock-bindings.txt for details.
+  - clock-names: Must include the following entries.
+    - pwm: PWM operating clock.
+    - sys: PWM system interface clock.
+  - #pwm-cells: Should be 2. See pwm.txt in this directory for the
+       description of the cells format.
+  - img,cr-periph: Must contain a phandle to the peripheral control
+       syscon node which contains PWM control registers.
+
+Example:
+       pwm: pwm@18101300 {
+               compatible = "img,pistachio-pwm";
+               reg = <0x18101300 0x100>;
+               clocks = <&pwm_clk>, <&system_clk>;
+               clock-names = "pwm", "sys";
+               #pwm-cells = <2>;
+               img,cr-periph = <&cr_periph>;
+       };