ARM: dts: stm32: add support for PWM on stm32mp157a-dk1

Add PWM support on stm32mp157a-dk1 board. There are several timers channels
made available on GPIO expansion and arduino connectors:
- Add PWM and trigger support (these timers can also be used as trigger
  for ADC).
It's easier then to configure them all. But keep them disabled by default,
so the pins are kept in their initial state to lower power consumption.
This way they can also be used as GPIO.

Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com>

diff --git a/arch/arm/boot/dts/stm32mp157a-dk1.dts b/arch/arm/boot/dts/stm32mp157a-dk1.dts
index 984a47cbd13dfe73360baef0c1cf658fb8a15f84..d4e37ab0752aa85a236d6c6241c30f861584db21 100644 (file)
--- a/arch/arm/boot/dts/stm32mp157a-dk1.dts
+++ b/arch/arm/boot/dts/stm32mp157a-dk1.dts
@@ -502,6 +502,91 @@
        status = "okay";
 };
 
+&timers1 {
+       /* spare dmas for other usage */
+       /delete-property/dmas;
+       /delete-property/dma-names;
+       status = "disabled";
+       pwm {
+               pinctrl-0 = <&pwm1_pins_a>;
+               pinctrl-1 = <&pwm1_sleep_pins_a>;
+               pinctrl-names = "default", "sleep";
+               status = "okay";
+       };
+       timer@0 {
+               status = "okay";
+       };
+};
+
+&timers3 {
+       /delete-property/dmas;
+       /delete-property/dma-names;
+       status = "disabled";
+       pwm {
+               pinctrl-0 = <&pwm3_pins_a>;
+               pinctrl-1 = <&pwm3_sleep_pins_a>;
+               pinctrl-names = "default", "sleep";
+               status = "okay";
+       };
+       timer@2 {
+               status = "okay";
+       };
+};
+
+&timers4 {
+       /delete-property/dmas;
+       /delete-property/dma-names;
+       status = "disabled";
+       pwm {
+               pinctrl-0 = <&pwm4_pins_a &pwm4_pins_b>;
+               pinctrl-1 = <&pwm4_sleep_pins_a &pwm4_sleep_pins_b>;
+               pinctrl-names = "default", "sleep";
+               status = "okay";
+       };
+       timer@3 {
+               status = "okay";
+       };
+};
+
+&timers5 {
+       /delete-property/dmas;
+       /delete-property/dma-names;
+       status = "disabled";
+       pwm {
+               pinctrl-0 = <&pwm5_pins_a>;
+               pinctrl-1 = <&pwm5_sleep_pins_a>;
+               pinctrl-names = "default", "sleep";
+               status = "okay";
+       };
+       timer@4 {
+               status = "okay";
+       };
+};
+
+&timers6 {
+       /delete-property/dmas;
+       /delete-property/dma-names;
+       status = "disabled";
+       timer@5 {
+               status = "okay";
+       };
+};
+
+&timers12 {
+       /delete-property/dmas;
+       /delete-property/dma-names;
+       status = "disabled";
+       pwm {
+               pinctrl-0 = <&pwm12_pins_a>;
+               pinctrl-1 = <&pwm12_sleep_pins_a>;
+               pinctrl-names = "default", "sleep";
+               status = "okay";
+       };
+       timer@11 {
+               status = "okay";
+       };
+};
+
 &uart4 {
        pinctrl-names = "default";
        pinctrl-0 = <&uart4_pins_a>;