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-rw-r--r--dts/Bindings/pwm/pwm-rockchip.txt20
-rw-r--r--dts/Bindings/pwm/pwm-st.txt41
2 files changed, 61 insertions, 0 deletions
diff --git a/dts/Bindings/pwm/pwm-rockchip.txt b/dts/Bindings/pwm/pwm-rockchip.txt
new file mode 100644
index 0000000000..d47d15a6a2
--- /dev/null
+++ b/dts/Bindings/pwm/pwm-rockchip.txt
@@ -0,0 +1,20 @@
+Rockchip PWM controller
+
+Required properties:
+ - compatible: should be "rockchip,<name>-pwm"
+ "rockchip,rk2928-pwm": found on RK29XX,RK3066 and RK3188 SoCs
+ "rockchip,rk3288-pwm": found on RK3288 SoC
+ "rockchip,vop-pwm": found integrated in VOP on RK3288 SoC
+ - reg: physical base address and length of the controller's registers
+ - clocks: phandle and clock specifier of the PWM reference clock
+ - #pwm-cells: should be 2. See pwm.txt in this directory for a
+ description of the cell format.
+
+Example:
+
+ pwm0: pwm@20030000 {
+ compatible = "rockchip,rk2928-pwm";
+ reg = <0x20030000 0x10>;
+ clocks = <&cru PCLK_PWM01>;
+ #pwm-cells = <2>;
+ };
diff --git a/dts/Bindings/pwm/pwm-st.txt b/dts/Bindings/pwm/pwm-st.txt
new file mode 100644
index 0000000000..84d2fb807d
--- /dev/null
+++ b/dts/Bindings/pwm/pwm-st.txt
@@ -0,0 +1,41 @@
+STMicroelectronics PWM driver bindings
+--------------------------------------
+
+Required parameters:
+- compatible : "st,pwm"
+- #pwm-cells : Number of cells used to specify a PWM. First cell
+ specifies the per-chip index of the PWM to use and the
+ second cell is the period in nanoseconds - fixed to 2
+ for STiH41x.
+- reg : Physical base address and length of the controller's
+ registers.
+- pinctrl-names: Set to "default".
+- pinctrl-0: List of phandles pointing to pin configuration nodes
+ for PWM module.
+ For Pinctrl properties, please refer to [1].
+- clock-names: Set to "pwm".
+- clocks: phandle of the clock used by the PWM module.
+ For Clk properties, please refer to [2].
+
+Optional properties:
+- st,pwm-num-chan: Number of available channels. If not passed, the driver
+ will consider single channel by default.
+
+[1] Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt
+[2] Documentation/devicetree/bindings/clock/clock-bindings.txt
+
+Example:
+
+pwm1: pwm@fe510000 {
+ compatible = "st,pwm";
+ reg = <0xfe510000 0x68>;
+ #pwm-cells = <2>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_pwm1_chan0_default
+ &pinctrl_pwm1_chan1_default
+ &pinctrl_pwm1_chan2_default
+ &pinctrl_pwm1_chan3_default>;
+ clocks = <&clk_sysin>;
+ clock-names = "pwm";
+ st,pwm-num-chan = <4>;
+};