[PATCH v3 0/3] Support FT3518 touchscreen in xiaomi-laurel

[PATCH v3 0/3] Support FT3518 touchscreen in xiaomi-laurel

[Yedaya Katsman via B4 Relay]

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

Signed-off-by: Yedaya Katsman <yedaya.ka@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

---
Yedaya Katsman (3):
      dt-bindings: input: touchscreen: edt-ft5x06: Add FocalTech FT3518
      drivers: input: touchscreen: edt-ft5x06: Add FocalTech FT3518
      arm64: dts: qcom: sm6125-xiaomi-laurel-sprout: Add Focaltech FT3518 touchscreen

 .../bindings/input/touchscreen/edt-ft5x06.yaml     |   1 +
 .../boot/dts/qcom/sm6125-xiaomi-laurel-sprout.dts  | 113 +++++++++++++++++++++
 drivers/input/touchscreen/edt-ft5x06.c             |   6 ++
 3 files changed, 120 insertions(+)
---
base-commit: b71e635feefc852405b14620a7fc58c4c80c0f73
change-id: 20260113-touchscreen-patches-beb2526bd5fb

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

[PATCH v3 1/3] dt-bindings: input: touchscreen: edt-ft5x06: Add FocalTech FT3518

[Yedaya Katsman via B4 Relay]

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

Document FocalTech FT3518 support by adding the compatible.

Co-developed-by: Kamil Gołda <kamil.golda@protonmail.com>
Signed-off-by: Kamil Gołda <kamil.golda@protonmail.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Signed-off-by: Yedaya Katsman <yedaya.ka@gmail.com>
---
 Documentation/devicetree/bindings/input/touchscreen/edt-ft5x06.yaml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/input/touchscreen/edt-ft5x06.yaml b/Documentation/devicetree/bindings/input/touchscreen/edt-ft5x06.yaml
index 7d3edb58f72d84ed19fb87fdd136c97f855aba00..6f90522de8c0afbe2d9d1e04578316350f66ec58 100644
--- a/Documentation/devicetree/bindings/input/touchscreen/edt-ft5x06.yaml
+++ b/Documentation/devicetree/bindings/input/touchscreen/edt-ft5x06.yaml
@@ -39,6 +39,7 @@ properties:
       - edt,edt-ft5406
       - edt,edt-ft5506
       - evervision,ev-ft5726
+      - focaltech,ft3518
       - focaltech,ft5426
       - focaltech,ft5452
       - focaltech,ft6236

-- 
2.52.0

[PATCH v3 2/3] drivers: input: touchscreen: edt-ft5x06: Add FocalTech FT3518

[Yedaya Katsman via B4 Relay]

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

The driver also works with FT3518, which supports up to 10 touch points.
 Add compatible data for it.

Co-developed-by: Kamil Gołda <kamil.golda@protonmail.com>
Signed-off-by: Kamil Gołda <kamil.golda@protonmail.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Signed-off-by: Yedaya Katsman <yedaya.ka@gmail.com>
---
 drivers/input/touchscreen/edt-ft5x06.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/input/touchscreen/edt-ft5x06.c b/drivers/input/touchscreen/edt-ft5x06.c
index bf498bd4dea9651ac939fe137b1c0f05e8557962..d0ab644be0069b5ab29ed037fa090a4279870193 100644
--- a/drivers/input/touchscreen/edt-ft5x06.c
+++ b/drivers/input/touchscreen/edt-ft5x06.c
@@ -1475,6 +1475,10 @@ static const struct edt_i2c_chip_data edt_ft5x06_data = {
 	.max_support_points = 5,
 };
 
+static const struct edt_i2c_chip_data edt_ft3518_data = {
+	.max_support_points = 10,
+};
+
 static const struct edt_i2c_chip_data edt_ft5452_data = {
 	.max_support_points = 5,
 };
@@ -1503,6 +1507,7 @@ static const struct i2c_device_id edt_ft5x06_ts_id[] = {
 	{ .name = "edt-ft5x06", .driver_data = (long)&edt_ft5x06_data },
 	{ .name = "edt-ft5506", .driver_data = (long)&edt_ft5506_data },
 	{ .name = "ev-ft5726", .driver_data = (long)&edt_ft5506_data },
+	{ .name = "ft3518", .driver_data = (long)&edt_ft3518_data },
 	{ .name = "ft5452", .driver_data = (long)&edt_ft5452_data },
 	/* Note no edt- prefix for compatibility with the ft6236.c driver */
 	{ .name = "ft6236", .driver_data = (long)&edt_ft6236_data },
@@ -1519,6 +1524,7 @@ static const struct of_device_id edt_ft5x06_of_match[] = {
 	{ .compatible = "edt,edt-ft5406", .data = &edt_ft5x06_data },
 	{ .compatible = "edt,edt-ft5506", .data = &edt_ft5506_data },
 	{ .compatible = "evervision,ev-ft5726", .data = &edt_ft5506_data },
+	{ .compatible = "focaltech,ft3518", .data = &edt_ft3518_data },
 	{ .compatible = "focaltech,ft5426", .data = &edt_ft5506_data },
 	{ .compatible = "focaltech,ft5452", .data = &edt_ft5452_data },
 	/* Note focaltech vendor prefix for compatibility with ft6236.c */

-- 
2.52.0

[PATCH v3 3/3] arm64: dts: qcom: sm6125-xiaomi-laurel-sprout: Add Focaltech FT3518 touchscreen

[Yedaya Katsman via B4 Relay]

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

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

Add pmx_ts_* gpio configurations and reference them in the touchscreen
node.
Note that gpio pin 83 for the regulator isn't documented downstream
except in the touchscreen node so it's not defined in the tlmm.

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>
---
 .../boot/dts/qcom/sm6125-xiaomi-laurel-sprout.dts  | 113 +++++++++++++++++++++
 1 file changed, 113 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..5e55acacee9585f34eead20661268103f0b7889c 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 +82,18 @@ 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>;
+
+		gpio = <&tlmm 83 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+
+		startup-delay-us = <70000>;
+	};
+
 	thermal-zones {
 		rf-pa0-thermal {
 			thermal-sensors = <&pm6125_adc_tm 0>;
@@ -128,6 +140,28 @@ &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-names = "pmx_ts_active","pmx_ts_suspend","pmx_ts_release";
+		pinctrl-0 = <&ts_int_active &ts_reset_active>;
+		pinctrl-1 = <&ts_int_suspend &ts_reset_suspend>;
+		pinctrl-2 = <&ts_release>;
+
+		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 +425,81 @@ &sdhc_2 {
 
 &tlmm {
 	gpio-reserved-ranges = <22 2>, <28 6>;
+
+	pmx_ts_reset_active {
+		ts_reset_active: ts_reset_active {
+			mux {
+				pins = "gpio87";
+				function = "gpio";
+			};
+
+			config {
+				pins = "gpio87";
+				drive-strength = <8>;
+				bias-pull-up;
+			};
+		};
+	};
+
+	pmx_ts_reset_suspend {
+		ts_reset_suspend: ts_reset_suspend {
+			mux {
+				pins = "gpio87";
+				function = "gpio";
+			};
+
+			config {
+				pins = "gpio87";
+				drive-strength = <2>;
+				bias-pull-down;
+			};
+		};
+	};
+
+	pmx_ts_int_active {
+		ts_int_active: ts_int_active {
+			mux {
+				pins = "gpio88";
+				function = "gpio";
+			};
+
+			config {
+				pins = "gpio88";
+				drive-strength = <8>;
+				bias-pull-up;
+			};
+		};
+	};
+
+	pmx_ts_int_suspend {
+		ts_int_suspend: ts_int_suspend {
+			mux {
+				pins = "gpio88";
+				function = "gpio";
+			};
+
+			config {
+				pins = "gpio88";
+				drive-strength = <2>;
+				bias-pull-down;
+			};
+		};
+	};
+
+	pmx_ts_release {
+		ts_release: ts_release {
+			mux {
+				pins = "gpio87", "gpio88";
+				function = "gpio";
+			};
+
+			config {
+				pins = "gpio87", "gpio88";
+				drive-strength = <2>;
+				bias-pull-down;
+			};
+		};
+	};
 };
 
 &ufs_mem_hc {

-- 
2.52.0

Re: [PATCH v3 0/3] Support FT3518 touchscreen in xiaomi-laurel

[Rob Herring]

On Sun, 18 Jan 2026 22:29:39 +0200, Yedaya Katsman wrote:
> 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
> 
> Signed-off-by: Yedaya Katsman <yedaya.ka@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
> 
> ---
> Yedaya Katsman (3):
>       dt-bindings: input: touchscreen: edt-ft5x06: Add FocalTech FT3518
>       drivers: input: touchscreen: edt-ft5x06: Add FocalTech FT3518
>       arm64: dts: qcom: sm6125-xiaomi-laurel-sprout: Add Focaltech FT3518 touchscreen
> 
>  .../bindings/input/touchscreen/edt-ft5x06.yaml     |   1 +
>  .../boot/dts/qcom/sm6125-xiaomi-laurel-sprout.dts  | 113 +++++++++++++++++++++
>  drivers/input/touchscreen/edt-ft5x06.c             |   6 ++
>  3 files changed, 120 insertions(+)
> ---
> base-commit: b71e635feefc852405b14620a7fc58c4c80c0f73
> change-id: 20260113-touchscreen-patches-beb2526bd5fb
> 
> Best regards,
> --
> Yedaya Katsman <yedaya.ka@gmail.com>
> 
> 
> 


My bot found new DTB warnings on the .dts files added or changed in this
series.

Some warnings may be from an existing SoC .dtsi. Or perhaps the warnings
are fixed by another series. Ultimately, it is up to the platform
maintainer whether these warnings are acceptable or not. No need to reply
unless the platform maintainer has comments.

If you already ran DT checks and didn't see these error(s), then
make sure dt-schema is up to date:

  pip3 install dtschema --upgrade


This patch series was applied (using b4) to base:
 Base: b71e635feefc852405b14620a7fc58c4c80c0f73 (use --merge-base to override)

If this is not the correct base, please add 'base-commit' tag
(or use b4 which does this automatically)


Warnings in base: 429
Warnings after series: 431

New warnings running 'make CHECK_DTBS=y for arch/arm64/boot/dts/qcom/' for 20260118-touchscreen-patches-v3-0-1c6a729c5eb4@gmail.com:

arch/arm64/boot/dts/qcom/sm6125-xiaomi-laurel-sprout.dtb: pinctrl@500000 (qcom,sm6125-tlmm): Unevaluated properties are not allowed ('pmx_ts_int_active', 'pmx_ts_int_suspend', 'pmx_ts_release', 'pmx_ts_reset_active', 'pmx_ts_reset_suspend' were unexpected)
	from schema $id: http://devicetree.org/schemas/pinctrl/qcom,sm6125-tlmm.yaml

Re: [PATCH v3 3/3] arm64: dts: qcom: sm6125-xiaomi-laurel-sprout: Add Focaltech FT3518 touchscreen

[Krzysztof Kozlowski]

On 18/01/2026 21:29, Yedaya Katsman via B4 Relay wrote:
> +
>  &rpm_requests {
>  	regulators-0 {
>  		compatible = "qcom,rpm-pm6125-regulators";
> @@ -387,6 +425,81 @@ &sdhc_2 {
>  
>  &tlmm {
>  	gpio-reserved-ranges = <22 2>, <28 6>;
> +
> +	pmx_ts_reset_active {

You must follow DTS coding style. Do not copy here code from downstream,
ever.

Best regards,
Krzysztof

Re: [PATCH v3 3/3] arm64: dts: qcom: sm6125-xiaomi-laurel-sprout: Add Focaltech FT3518 touchscreen

[Konrad Dybcio]

On 1/18/26 9:29 PM, Yedaya Katsman via B4 Relay wrote:
> From: Yedaya Katsman <yedaya.ka@gmail.com>
> 
> Add device tree node for the Focaltech FT3518 touchscreen on
> Xiaomi Mi A3 (laurel-sprout).
> 
> Add pmx_ts_* gpio configurations and reference them in the touchscreen
> node.
> Note that gpio pin 83 for the regulator isn't documented downstream
> except in the touchscreen node so it's not defined in the tlmm.
> 
> 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>
> ---

[...]

>  &tlmm {
>  	gpio-reserved-ranges = <22 2>, <28 6>;
> +
> +	pmx_ts_reset_active {

Node names must end in -state and you should use dashes instead of
underscores in node names ('make dtbs_check' would tell you at least
one of these things)

> +		ts_reset_active: ts_reset_active {
> +			mux {

Please drop the intermediate nodes and put the properties directly
under the foo-state {} node. The indirection is useful when we're
defining multiple pins with the exact same settings (e.g. 4 lanes
of SDIO)

Konrad

Re: [PATCH v3 1/3] dt-bindings: input: touchscreen: edt-ft5x06: Add FocalTech FT3518

[Dmitry Torokhov]

On Sun, Jan 18, 2026 at 10:29:40PM +0200, Yedaya Katsman via B4 Relay wrote:
> From: Yedaya Katsman <yedaya.ka@gmail.com>
> 
> Document FocalTech FT3518 support by adding the compatible.
> 
> Co-developed-by: Kamil Gołda <kamil.golda@protonmail.com>
> Signed-off-by: Kamil Gołda <kamil.golda@protonmail.com>
> Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
> Signed-off-by: Yedaya Katsman <yedaya.ka@gmail.com>

Applied, thank you.

-- 
Dmitry

Re: [PATCH v3 2/3] drivers: input: touchscreen: edt-ft5x06: Add FocalTech FT3518

[Dmitry Torokhov]

On Sun, Jan 18, 2026 at 10:29:41PM +0200, Yedaya Katsman via B4 Relay wrote:
> From: Yedaya Katsman <yedaya.ka@gmail.com>
> 
> The driver also works with FT3518, which supports up to 10 touch points.
>  Add compatible data for it.
> 
> Co-developed-by: Kamil Gołda <kamil.golda@protonmail.com>
> Signed-off-by: Kamil Gołda <kamil.golda@protonmail.com>
> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
> Signed-off-by: Yedaya Katsman <yedaya.ka@gmail.com>

Applied, thank you.

-- 
Dmitry