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>;
+
+ 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 {
--
2.40.0
