ARM: dts: qcom: msm8974-klte: Add support for touchscreen

Add support for the touchscreen found on the Samsung Galaxy S5.

Signed-off-by: Iskren Chernev <iskren.chernev@gmail.com>
Link: https://lore.kernel.org/r/20200920144859.813032-4-iskren.chernev@gmail.com
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>

diff --git a/arch/arm/boot/dts/qcom-msm8974-samsung-klte.dts b/arch/arm/boot/dts/qcom-msm8974-samsung-klte.dts
index 750e2f2..085636f 100644 (file)
--- a/arch/arm/boot/dts/qcom-msm8974-samsung-klte.dts
+++ b/arch/arm/boot/dts/qcom-msm8974-samsung-klte.dts
@@ -284,6 +284,16 @@
                        };
                };
 
+               i2c2_pins: i2c2 {
+                       mux {
+                               pins = "gpio6", "gpio7";
+                               function = "blsp_i2c2";
+
+                               drive-strength = <2>;
+                               bias-disable;
+                       };
+               };
+
                i2c6_pins: i2c6 {
                        mux {
                                pins = "gpio29", "gpio30";
@@ -342,6 +352,42 @@
                };
        };
 
+       i2c@f9924000 {
+               status = "okay";
+
+               pinctrl-names = "default";
+               pinctrl-0 = <&i2c2_pins>;
+
+               touchscreen@20 {
+                       compatible = "syna,rmi4-i2c";
+                       reg = <0x20>;
+
+                       interrupt-parent = <&pma8084_gpios>;
+                       interrupts = <8 IRQ_TYPE_EDGE_FALLING>;
+
+                       vdd-supply = <&max77826_ldo13>;
+                       vio-supply = <&pma8084_lvs2>;
+
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&touch_pin>;
+
+                       syna,startup-delay-ms = <100>;
+
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       rmi4-f01@1 {
+                               reg = <0x1>;
+                               syna,nosleep-mode = <1>;
+                       };
+
+                       rmi4-f12@12 {
+                               reg = <0x12>;
+                               syna,sensor-type = <1>;
+                       };
+               };
+       };
+
        i2c@f9928000 {
                status = "okay";
 
@@ -460,6 +506,14 @@
                                input-enable;
                                power-source = <PMA8084_GPIO_S4>;
                        };
+
+                       touch_pin: touchscreen-int-pin {
+                               pins = "gpio8";
+                               function = "normal";
+                               bias-disable;
+                               input-enable;
+                               power-source = <PMA8084_GPIO_S4>;
+                       };
                };
        };
 };