arm64: dts: qcom: msm8916-wingtech-wt88047: Add touchscreen

The Xiaomi Redmi 2 has a FocalTech touchscreen. The exact model is
not mentioned anywhere, but it works just fine with the mainline
edt-ft5x06 driver when using the "edt,edt-ft5506" compatible.

Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Link: https://lore.kernel.org/r/20210712133735.318250-2-stephan@gerhold.net
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>

diff --git a/arch/arm64/boot/dts/qcom/msm8916-wingtech-wt88047.dts b/arch/arm64/boot/dts/qcom/msm8916-wingtech-wt88047.dts
index 5ee35a9..a4d8d6f 100644 (file)
--- a/arch/arm64/boot/dts/qcom/msm8916-wingtech-wt88047.dts
+++ b/arch/arm64/boot/dts/qcom/msm8916-wingtech-wt88047.dts
@@ -42,6 +42,30 @@
        };
 };
 
+&blsp_i2c5 {
+       status = "okay";
+
+       touchscreen@38 {
+               /* Likely some other model but works just fine with this one */
+               compatible = "edt,edt-ft5506";
+               reg = <0x38>;
+
+               interrupt-parent = <&msmgpio>;
+               interrupts = <13 IRQ_TYPE_EDGE_FALLING>;
+
+               reset-gpios = <&msmgpio 12 GPIO_ACTIVE_LOW>;
+
+               vcc-supply = <&pm8916_l17>;
+               iovcc-supply = <&pm8916_l6>;
+
+               touchscreen-size-x = <720>;
+               touchscreen-size-y = <1280>;
+
+               pinctrl-names = "default";
+               pinctrl-0 = <&touchscreen_default>;
+       };
+};
+
 &blsp1_uart2 {
        status = "okay";
 };
@@ -198,6 +222,22 @@
                bias-pull-up;
        };
 
+       touchscreen_default: touchscreen-default {
+               pins = "gpio13";
+               function = "gpio";
+
+               drive-strength = <2>;
+               bias-pull-up;
+
+               reset {
+                       pins = "gpio12";
+                       function = "gpio";
+
+                       drive-strength = <2>;
+                       bias-disable;
+               };
+       };
+
        usb_id_default: usb-id-default {
                pins = "gpio110";
                function = "gpio";