arm64: dts: qcom: msm8916-samsung-serranove: Add touch screen

Like msm8916-samsung-a3u-eur, the S4 Mini VE uses a Zinitix BT541
touch screen. Add it together with the necessary fixed-regulator
to the device tree.

Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20211004201921.18526-3-stephan@gerhold.net

diff --git a/arch/arm64/boot/dts/qcom/msm8916-samsung-serranove.dts b/arch/arm64/boot/dts/qcom/msm8916-samsung-serranove.dts
index 013f843aff9cc9a9e81e5905d76174d7ecfd57b4..aa1326e5d4cbc64aa2a4eae218c61f4a5f5ae84b 100644 (file)
--- a/arch/arm64/boot/dts/qcom/msm8916-samsung-serranove.dts
+++ b/arch/arm64/boot/dts/qcom/msm8916-samsung-serranove.dts
@@ -78,6 +78,19 @@
                };
        };
 
+       reg_vdd_tsp: regulator-vdd-tsp {
+               compatible = "regulator-fixed";
+               regulator-name = "vdd_tsp";
+               regulator-min-microvolt = <3300000>;
+               regulator-max-microvolt = <3300000>;
+
+               gpio = <&msmgpio 73 GPIO_ACTIVE_HIGH>;
+               enable-active-high;
+
+               pinctrl-names = "default";
+               pinctrl-0 = <&tsp_en_default>;
+       };
+
        i2c-muic {
                compatible = "i2c-gpio";
                sda-gpios = <&msmgpio 105 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
@@ -102,6 +115,27 @@
        };
 };
 
+&blsp_i2c5 {
+       status = "okay";
+
+       touchscreen@20 {
+               compatible = "zinitix,bt541";
+               reg = <0x20>;
+
+               interrupt-parent = <&msmgpio>;
+               interrupts = <13 IRQ_TYPE_EDGE_FALLING>;
+
+               touchscreen-size-x = <540>;
+               touchscreen-size-y = <960>;
+
+               vdd-supply = <&reg_vdd_tsp>;
+               vddo-supply = <&pm8916_l6>;
+
+               pinctrl-names = "default";
+               pinctrl-0 = <&tsp_irq_default>;
+       };
+};
+
 &blsp1_uart2 {
        status = "okay";
 };
@@ -298,4 +332,20 @@
                drive-strength = <2>;
                bias-disable;
        };
+
+       tsp_en_default: tsp-en-default {
+               pins = "gpio73";
+               function = "gpio";
+
+               drive-strength = <2>;
+               bias-disable;
+       };
+
+       tsp_irq_default: tsp-irq-default {
+               pins = "gpio13";
+               function = "gpio";
+
+               drive-strength = <2>;
+               bias-disable;
+       };
 };