From: Yedaya Katsman <yedaya.ka@gmail.com>

Add device tree node for the Focaltech FT3518 touchscreen on
Xiaomi Mi A3 (laurel-sprout).

Enable qupv3_id_0 and i2c2 bus that the touchscreen is on.

Downstream references:
Link: https://github.com/MiCode/Xiaomi_Kernel_OpenSource/blob/laurel-r-oss/arch/arm64/boot/dts/qcom/trinket-pinctrl.dtsi
Link: https://github.com/MiCode/Xiaomi_Kernel_OpenSource/blob/laurel-r-oss/arch/arm64/boot/dts/qcom/laurel_sprout-qrd.dtsi

Co-developed-by: Kamil Gołda <kamil.golda@protonmail.com>
Signed-off-by: Kamil Gołda <kamil.golda@protonmail.com>
Signed-off-by: Yedaya Katsman <yedaya.ka@gmail.com>
---
Adds support for the touchscreen in the Xiaomi Mi A3 (xiaomi-laurel)
 smartphone, FocalTech FT3518

Original tree was here:
 Link: https://gitlab.postmarketos.org/SzczurekYT/linux/-/commits/laurel
---
Changes in v5:
- Add pin config for ts vdd
- Reorder some properties
- Drop applied patches
- Link to v4: https://lore.kernel.org/r/20260120-touchscreen-patches-v4-0-30145da9d6d3@gmail.com

Changes in v4:
- Follow dts coding style for pinctrl nodes
- Don't refrence touchscreen "release" gpio config
- Link to v3: https://lore.kernel.org/r/20260118-touchscreen-patches-v3-0-1c6a729c5eb4@gmail.com

Changes in v3:
- Rename regulator node and reorder nodes
- Add gpio pin configuration for pmx_ts_* in sm6125, and reference in the
  touchscreen configuration as pinctrl-*. Doesn't have configuration for
  the gpio 83 pin since it isn't documented downstream.
- Link to v2: https://lore.kernel.org/r/20260114-touchscreen-patches-v2-0-4215f94c8aba@gmail.com

Changes in v2:
- Fixed name and email in signoffs
- Link to v1: https://lore.kernel.org/r/20260113-touchscreen-patches-v1-0-a10957f32dd8@gmail.com
---
 .../boot/dts/qcom/sm6125-xiaomi-laurel-sprout.dts  | 73 ++++++++++++++++++++++
 1 file changed, 73 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sm6125-xiaomi-laurel-sprout.dts b/arch/arm64/boot/dts/qcom/sm6125-xiaomi-laurel-sprout.dts
index 994fb0412fcbdf5466f87a325c48b697a37b514b..97f64cb5d570e018ef666612f3839c4e6759ac7b 100644
--- a/arch/arm64/boot/dts/qcom/sm6125-xiaomi-laurel-sprout.dts
+++ b/arch/arm64/boot/dts/qcom/sm6125-xiaomi-laurel-sprout.dts
@@ -82,6 +82,19 @@ key-volume-up {
 		};
 	};
 
+	ts_vdd_supply: regulator-ts-vdd {
+		compatible = "regulator-fixed";
+		regulator-name = "ts_vdd_supply";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		startup-delay-us = <70000>;
+
+		enable-active-high;
+		gpio = <&tlmm 83 GPIO_ACTIVE_HIGH>;
+		pinctrl-0 = <&ts_vdd_en>;
+		pinctrl-names = "default";
+	};
+
 	thermal-zones {
 		rf-pa0-thermal {
 			thermal-sensors = <&pm6125_adc_tm 0>;
@@ -128,6 +141,27 @@ &hsusb_phy1 {
 	status = "okay";
 };
 
+&i2c2 {
+	status = "okay";
+
+	touchscreen@38 {
+		compatible = "focaltech,ft3518";
+		reg = <0x38>;
+		interrupts-extended = <&tlmm 88 IRQ_TYPE_EDGE_FALLING>;
+
+		vcc-supply = <&ts_vdd_supply>;
+
+		pinctrl-0 = <&ts_int_active &ts_reset_active>;
+		pinctrl-1 = <&ts_int_suspend &ts_reset_suspend>;
+		pinctrl-names = "default","sleep";
+
+		reset-gpios = <&tlmm 87 GPIO_ACTIVE_LOW>;
+
+		touchscreen-size-x = <720>;
+		touchscreen-size-y = <1560>;
+	};
+};
+
 &pm6125_adc {
 	pinctrl-names = "default";
 	pinctrl-0 = <&camera_flash_therm &emmc_ufs_therm>;
@@ -220,6 +254,10 @@ &pon_resin {
 	status = "okay";
 };
 
+&qupv3_id_0 {
+	status = "okay";
+};
+
 &rpm_requests {
 	regulators-0 {
 		compatible = "qcom,rpm-pm6125-regulators";
@@ -387,6 +425,41 @@ &sdhc_2 {
 
 &tlmm {
 	gpio-reserved-ranges = <22 2>, <28 6>;
+
+	ts_vdd_en: ts-vdd-default-state {
+		pins = "gpio83";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-disable;
+	};
+
+	ts_reset_active: pmx-ts-reset-active-state {
+		pins = "gpio87";
+		function = "gpio";
+		drive-strength = <8>;
+		bias-pull-up;
+	};
+
+	ts_reset_suspend: pmx-ts-reset-suspend-state {
+		pins = "gpio87";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-pull-down;
+	};
+
+	ts_int_active: pmx-ts-int-active-state {
+		pins = "gpio88";
+		function = "gpio";
+		drive-strength = <8>;
+		bias-pull-up;
+	};
+
+	ts_int_suspend: pmx-ts-int-suspend-state {
+		pins = "gpio88";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-pull-down;
+	};
 };
 
 &ufs_mem_hc {

---
base-commit: 9845cf73f7db6094c0d8419d6adb848028f4a921
change-id: 20260113-touchscreen-patches-beb2526bd5fb

Best regards,
-- 
Yedaya Katsman <yedaya.ka@gmail.com>