On 27.04.2023 22:34, 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>
> ---
> .../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>;
Are you sure it's <&mmcc CAMSS_GP1_CLK> and not <&gcc GCC_GP1_CLK>?
Konrad
> +
> + 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 {
>
