[PATCH v2 4/4] ARM: dts: qcom: msm8974pro-htc-m8: add touchscreen

[Alexandre Messier via B4 Relay]

From: Alexandre Messier <alex at me.ssier.org>

Add the touchscreen device node for the HTC One (M8).

The downstream vendor kernel used an I2C frequency of 384 kHz
for this bus. Use the same value as the vendor.

Signed-off-by: Alexandre Messier <alex at me.ssier.org>
---
 arch/arm/boot/dts/qcom/qcom-msm8974pro-htc-m8.dts | 36 +++++++++++++++++++++++
 1 file changed, 36 insertions(+)

diff --git a/arch/arm/boot/dts/qcom/qcom-msm8974pro-htc-m8.dts b/arch/arm/boot/dts/qcom/qcom-msm8974pro-htc-m8.dts
index 2edf407db567..66ad93e7dd20 100644
--- a/arch/arm/boot/dts/qcom/qcom-msm8974pro-htc-m8.dts
+++ b/arch/arm/boot/dts/qcom/qcom-msm8974pro-htc-m8.dts
@@ -65,6 +65,35 @@ vreg_vph_pwr: vreg-vph-pwr {
 	};
 };
 
+&blsp1_i2c2 {
+	clock-frequency = <384000>;
+
+	status = "okay";
+
+	touch at 20 {
+		compatible = "syna,rmi4-i2c";
+		reg = <0x20>;
+
+		interrupts-extended = <&tlmm 18 IRQ_TYPE_LEVEL_LOW>;
+
+		pinctrl-0 = <&ts_int_pin>;
+		pinctrl-names = "default";
+
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		rmi4-f01 at 1 {
+			reg = <0x1>;
+			syna,nosleep-mode = <1>;
+		};
+
+		rmi4-f11 at 11 {
+			reg = <0x11>;
+			syna,sensor-type = <1>;
+		};
+	};
+};
+
 &blsp1_i2c3 {
 	clock-frequency = <384000>;
 
@@ -353,6 +382,13 @@ cmd-data-pins {
 		};
 	};
 
+	ts_int_pin: ts-int-pin-state {
+		pins = "gpio18";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-disable;
+	};
+
 	wcnss_pin_a: wcnss-pin-active-state {
 		bt-pins {
 			pins = "gpio35", "gpio43", "gpio44";

-- 
2.53.0