2023-06-22 03:01:52

by Lin, Meng-Bo

Subject: [PATCH 8/8] arm64: dts: qcom: msm8939-samsung-a7: Add touchscreen

A7 uses a Cypress TrueTouch Generation 5 that is connected to blsp_i2c5.
Add it to the device tree.

Signed-off-by: Lin, Meng-Bo <[email protected]>
---
.../boot/dts/qcom/msm8939-samsung-a7.dts | 66 +++++++++++++++++++
1 file changed, 66 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/msm8939-samsung-a7.dts b/arch/arm64/boot/dts/qcom/msm8939-samsung-a7.dts
index ea74b61782de..66e56ac59998 100644
--- a/arch/arm64/boot/dts/qcom/msm8939-samsung-a7.dts
+++ b/arch/arm64/boot/dts/qcom/msm8939-samsung-a7.dts
@@ -222,6 +222,33 @@ reg_touch_key: regulator-touch-key {
pinctrl-names = "default";
};

+ reg_tsp_vdd: regulator-tsp-vdd {
+ compatible = "regulator-fixed";
+ regulator-name = "tsp_vdd";
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ vin-supply = <&pm8916_s4>;
+
+ gpio = <&tlmm 8 GPIO_ACTIVE_HIGH>;
+ enable-active-high;
+
+ pinctrl-0 = <&reg_tsp_io_en_default>;
+ pinctrl-names = "default";
+ };
+
+ reg_vdd_tsp: regulator-vdd-tsp {
+ compatible = "regulator-fixed";
+ regulator-name = "vdd_tsp";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+
+ gpio = <&tlmm 73 GPIO_ACTIVE_HIGH>;
+ enable-active-high;
+
+ pinctrl-0 = <&reg_tsp_en_default>;
+ pinctrl-names = "default";
+ };
+
reg_vibrator: regulator-vibrator {
compatible = "regulator-fixed";
regulator-name = "motor_en";
@@ -260,6 +287,24 @@ muic: extcon@25 {
};
};

+&blsp_i2c5 {
+ status = "okay";
+
+ touchscreen@24 {
+ compatible = "cypress,tt21000";
+
+ reg = <0x24>;
+ interrupt-parent = <&tlmm>;
+ interrupts = <13 IRQ_TYPE_EDGE_FALLING>;
+
+ vdd-supply = <&reg_vdd_tsp>;
+ vddio-supply = <&reg_tsp_vdd>;
+
+ pinctrl-0 = <&tsp_int_default>;
+ pinctrl-names = "default";
+ };
+};
+
&blsp_uart2 {
status = "okay";
};
@@ -385,6 +430,20 @@ nfc_i2c_default: nfc-i2c-default-state {
bias-disable;
};

+ reg_tsp_en_default: reg-tsp-en-default-state {
+ pins = "gpio73";
+ function = "gpio";
+ drive-strength = <2>;
+ bias-disable;
+ };
+
+ reg_tsp_io_en_default: reg-tsp-io-en-default-state {
+ pins = "gpio8";
+ function = "gpio";
+ drive-strength = <2>;
+ bias-disable;
+ };
+
sdc2_cd_default: sdc2-cd-default-state {
pins = "gpio38";
function = "gpio";
@@ -426,4 +485,11 @@ tkey_led_en_default: tkey-led-en-default-state {
drive-strength = <2>;
bias-disable;
};
+
+ tsp_int_default: tsp-int-default-state {
+ pins = "gpio13";
+ function = "gpio";
+ drive-strength = <2>;
+ bias-disable;
+ };
};
--
2.39.2