On 2.05.2023 17:28, Luca Weiss wrote:
> On Dienstag, 2. Mai 2023 12:40:40 CEST Konrad Dybcio wrote:
>> 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>?
>
> Quite sure.
>
> The driver uses:
>
> cam_gp1_clk = clk_get(&pdev->dev, "cam_gp1_clk");
>
> and this comes from the clock-8974.c driver
>
> CLK_LOOKUP("cam_gp1_clk", camss_gp1_clk.c, "vibrator"),
>
> Regards
> Luca
ugh that hurts my brain but fine, maybe the camss clock had a
pad closer to the vibrator pcb traces..
Reviewed-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxx>
Konrad
>
>>
>> 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 {
>
>
>
>
