Re: [PATCH 4/4] ARM: dts: qcom: msm8974-hammerhead: Add vibrator

[Caleb Connolly]

On 27/04/2023 21:34, Luca Weiss wrote:
> The Nexus 5 has a vibrator connected to the clock output of GP1_CLK
> which we can use with the clk-pwm driver, then we can use that pwm with
> pwm-vibrator to get haptics functionality.
>
> This patch is based on Brian Masney's previous patch with clk-vibrator.
>
> Signed-off-by: Luca Weiss <luca@xxxxxxxxx>

Reviewed-by: Caleb Connolly <caleb.connolly@xxxxxxxxxx>
> ---
>   .../dts/qcom-msm8974-lge-nexus5-hammerhead.dts     | 35 ++++++++++++++++++++++
>   1 file changed, 35 insertions(+)
>
> diff --git a/arch/arm/boot/dts/qcom-msm8974-lge-nexus5-hammerhead.dts b/arch/arm/boot/dts/qcom-msm8974-lge-nexus5-hammerhead.dts
> index ab35f2d644c0..fea8a6be9021 100644
> --- a/arch/arm/boot/dts/qcom-msm8974-lge-nexus5-hammerhead.dts
> +++ b/arch/arm/boot/dts/qcom-msm8974-lge-nexus5-hammerhead.dts
> @@ -41,6 +41,25 @@ key-volume-down {
>   		};
>   	};
>   
> +	clk_pwm: pwm {
> +		compatible = "clk-pwm";
> +		clocks = <&mmcc CAMSS_GP1_CLK>;
> +
> +		pinctrl-0 = <&vibrator_pin>;
> +		pinctrl-names = "default";
> +
> +		#pwm-cells = <2>;
> +	};
> +
> +	vibrator {
> +		compatible = "pwm-vibrator";
> +		pwms = <&clk_pwm 0 100000>;
> +		pwm-names = "enable";
> +
> +		vcc-supply = <&pm8941_l19>;
> +		enable-gpios = <&tlmm 60 GPIO_ACTIVE_HIGH>;
> +	};
> +
>   	vreg_wlan: wlan-regulator {
>   		compatible = "regulator-fixed";
>   
> @@ -637,6 +656,22 @@ shutdown-pins {
>   			function = "gpio";
>   		};
>   	};
> +
> +	vibrator_pin: vibrator-state {
> +		core-pins {
> +			pins = "gpio27";
> +			function = "gp1_clk";
> +			drive-strength = <6>;
> +			bias-disable;
> +		};
> +
> +		enable-pins {
> +			pins = "gpio60";
> +			function = "gpio";
> +			drive-strength = <2>;
> +			bias-disable;
> +		};
> +	};
>   };
>   
>   &usb {