[PATCH 5/5] ARM: dts: stm32: Add TIMERS inverted PWM channel 3 on STM32MP135F-DK

[Patrice CHOTARD]

On 3/6/25 11:56, Cheick Traore wrote:
> The pwm source TIM1_CH3N channel (on PE12) in inverted polarity mode
> will be used to manage the brightness of the panel backlight on
> STM32MP135F-DK.
> 
> Signed-off-by: Cheick Traore <cheick.traore at foss.st.com>
> ---
> 
>  arch/arm/dts/stm32mp13-pinctrl.dtsi | 15 +++++++++++++++
>  arch/arm/dts/stm32mp135f-dk.dts     | 14 ++++++++++++++
>  2 files changed, 29 insertions(+)
> 
> diff --git a/arch/arm/dts/stm32mp13-pinctrl.dtsi b/arch/arm/dts/stm32mp13-pinctrl.dtsi
> index c01d39f03ea..52c2a9f24d7 100644
> --- a/arch/arm/dts/stm32mp13-pinctrl.dtsi
> +++ b/arch/arm/dts/stm32mp13-pinctrl.dtsi
> @@ -215,6 +215,21 @@
>  		};
>  	};
>  
> +	pwm1_ch3n_pins_a: pwm1-ch3n-0 {
> +		pins {
> +			pinmux = <STM32_PINMUX('E', 12, AF1)>; /* TIM1_CH3N */
> +			bias-pull-down;
> +			drive-push-pull;
> +			slew-rate = <0>;
> +		};
> +	};
> +
> +	pwm1_ch3n_sleep_pins_a: pwm1-ch3n-sleep-0 {
> +		pins {
> +			pinmux = <STM32_PINMUX('E', 12, ANALOG)>; /* TIM1_CH3N */
> +		};
> +	};
> +
>  	pwm3_pins_a: pwm3-0 {
>  		pins {
>  			pinmux = <STM32_PINMUX('B', 1, AF2)>; /* TIM3_CH4 */
> diff --git a/arch/arm/dts/stm32mp135f-dk.dts b/arch/arm/dts/stm32mp135f-dk.dts
> index eea740d097c..275823da3c6 100644
> --- a/arch/arm/dts/stm32mp135f-dk.dts
> +++ b/arch/arm/dts/stm32mp135f-dk.dts
> @@ -9,6 +9,7 @@
>  #include <dt-bindings/gpio/gpio.h>
>  #include <dt-bindings/input/input.h>
>  #include <dt-bindings/leds/common.h>
> +#include <dt-bindings/pwm/pwm.h>
>  #include <dt-bindings/regulator/st,stm32mp13-regulator.h>
>  #include "stm32mp135.dtsi"
>  #include "stm32mp13xf.dtsi"
> @@ -207,6 +208,19 @@
>  	status = "disabled";
>  };
>  
> +&timers1 {
> +	/* spare dmas for other usage */
> +	/delete-property/dmas;
> +	/delete-property/dma-names;
> +	status = "okay";
> +	pwm1: pwm {
> +		pinctrl-0 = <&pwm1_ch3n_pins_a>;
> +		pinctrl-1 = <&pwm1_ch3n_sleep_pins_a>;
> +		pinctrl-names = "default", "sleep";
> +		status = "okay";
> +	};
> +};
> +
>  &timers3 {
>  	/delete-property/dmas;
>  	/delete-property/dma-names;


Reviewed-by: Patrice Chotard <patrice.chotard at foss.st.com>

Thanks
Patrice