On Thu, Nov 24, 2016 at 04:14:19PM +0100, Benjamin Gaignard wrote:
Define bindings for pwm-stm32
version 2:
- use parameters instead of compatible of handle the hardware configuration
Signed-off-by: Benjamin Gaignard benjamin.gaignard@st.com
.../devicetree/bindings/pwm/pwm-stm32.txt | 37 ++++++++++++++++++++++ 1 file changed, 37 insertions(+) create mode 100644 Documentation/devicetree/bindings/pwm/pwm-stm32.txt
diff --git a/Documentation/devicetree/bindings/pwm/pwm-stm32.txt b/Documentation/devicetree/bindings/pwm/pwm-stm32.txt new file mode 100644 index 0000000..36263f0 --- /dev/null +++ b/Documentation/devicetree/bindings/pwm/pwm-stm32.txt @@ -0,0 +1,37 @@ +STMicroelectronics PWM driver bindings for STM32
+Must be a sub-node of STM32 general purpose timer driver
+Required parameters: +- compatible: Must be "st,stm32-pwm" +- 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].+Optional parameters: +- st,breakinput: Set if the hardware have break input capabilities +- st,breakinput-polarity: Set break input polarity. Default is 0
The value define the active polarity:- 0 (active LOW)- 1 (active HIGH)+- st,pwm-num-chan: Number of available PWM channels. Default is 0. +- st,32bits-counter: Set if the hardware have a 32 bits counter +- st,complementary: Set if the hardware have complementary output channels
What does complementary mean here?
+[1] Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt
+Example:
- gptimer1: gptimer1@40010000 {
timer@...
compatible = "st,stm32-gptimer";reg = <0x40010000 0x400>;clocks = <&rcc 0 160>;clock-names = "clk_int";pwm1@0 {
pwm {
Is there more than one?
compatible = "st,stm32-pwm";st,pwm-num-chan = <4>;st,breakinput;st,complementary;};- };
-- 1.9.1