[PATCH v2 0/3] Support FT3518 touchscreen in xiaomi-laurel

[PATCH v2 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 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  | 34 ++++++++++++++++++++++
 drivers/input/touchscreen/edt-ft5x06.c             |  6 ++++
 3 files changed, 41 insertions(+)
---
base-commit: b71e635feefc852405b14620a7fc58c4c80c0f73
change-id: 20260113-touchscreen-patches-beb2526bd5fb

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

[PATCH v2 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>
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 v2 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>
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 v2 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).

Enable qupv3_id_0 and i2c2 bus that the touchscreen is on.

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  | 34 ++++++++++++++++++++++
 1 file changed, 34 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..97feed708d3b6483eab72cfb0ae39be6f5ae3a11 100644
--- a/arch/arm64/boot/dts/qcom/sm6125-xiaomi-laurel-sprout.dts
+++ b/arch/arm64/boot/dts/qcom/sm6125-xiaomi-laurel-sprout.dts
@@ -119,6 +119,18 @@ active-config0 {
 			};
 		};
 	};
+
+	ts_vdd_supply: ts-vdd-supply {
+		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>;
+	};
 };
 
 &hsusb_phy1 {
@@ -411,3 +423,25 @@ &usb3 {
 &usb3_dwc3 {
 	extcon = <&extcon_usb>;
 };
+
+&qupv3_id_0 {
+	status = "okay";
+};
+
+&i2c2 {
+	status = "okay";
+
+	touchscreen@38 {
+		compatible = "focaltech,ft3518";
+		reg = <0x38>;
+		interrupt-parent = <&tlmm>;
+		interrupts = <88 IRQ_TYPE_EDGE_FALLING>;
+
+		vcc-supply = <&ts_vdd_supply>;
+
+		reset-gpios = <&tlmm 87 GPIO_ACTIVE_LOW>;
+
+		touchscreen-size-x = <720>;
+		touchscreen-size-y = <1560>;
+	};
+};

-- 
2.52.0

Re: [PATCH v2 3/3] arm64: dts: qcom: sm6125-xiaomi-laurel-sprout: Add Focaltech FT3518 touchscreen

[Konrad Dybcio]

On 1/14/26 10:31 AM, 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).
> 
> Enable qupv3_id_0 and i2c2 bus that the touchscreen is on.
> 
> 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  | 34 ++++++++++++++++++++++
>  1 file changed, 34 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..97feed708d3b6483eab72cfb0ae39be6f5ae3a11 100644
> --- a/arch/arm64/boot/dts/qcom/sm6125-xiaomi-laurel-sprout.dts
> +++ b/arch/arm64/boot/dts/qcom/sm6125-xiaomi-laurel-sprout.dts
> @@ -119,6 +119,18 @@ active-config0 {
>  			};
>  		};
>  	};
> +
> +	ts_vdd_supply: ts-vdd-supply {
> +		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>;
> +	};
>  };
>  
>  &hsusb_phy1 {
> @@ -411,3 +423,25 @@ &usb3 {
>  &usb3_dwc3 {
>  	extcon = <&extcon_usb>;
>  };
> +
> +&qupv3_id_0 {
> +	status = "okay";
> +};
> +
> +&i2c2 {

Please sort the label references alphabetically

> +	status = "okay";
> +
> +	touchscreen@38 {
> +		compatible = "focaltech,ft3518";
> +		reg = <0x38>;
> +		interrupt-parent = <&tlmm>;
> +		interrupts = <88 IRQ_TYPE_EDGE_FALLING>;

interrupts-extended = <&tlmm 88 IRQ_TYPE_EDGE_FALLING>;
> +
> +		vcc-supply = <&ts_vdd_supply>;
> +
> +		reset-gpios = <&tlmm 87 GPIO_ACTIVE_LOW>;

You reference gpio83 (vdd en), 88 (interrupt) and 87 (reset), please add
a configuration for them under the TLMM node to ensure they're always in
a predictable state

You can probably find it in the downstream kernel, otherwise boot up a
downstream build and check /sys/kernel/debug/gpios

Konrad

Re: [PATCH v2 2/3] drivers: input: touchscreen: edt-ft5x06: Add FocalTech FT3518

[Dmitry Baryshkov]

On Wed, Jan 14, 2026 at 11:31:07AM +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>
> Signed-off-by: Yedaya Katsman <yedaya.ka@gmail.com>
> ---
>  drivers/input/touchscreen/edt-ft5x06.c | 6 ++++++
>  1 file changed, 6 insertions(+)
> 

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>


-- 
With best wishes
Dmitry

Re: [PATCH v2 3/3] arm64: dts: qcom: sm6125-xiaomi-laurel-sprout: Add Focaltech FT3518 touchscreen

[Dmitry Baryshkov]

On Wed, Jan 14, 2026 at 11:31:08AM +0200, 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).
> 
> Enable qupv3_id_0 and i2c2 bus that the touchscreen is on.
> 
> 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  | 34 ++++++++++++++++++++++
>  1 file changed, 34 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..97feed708d3b6483eab72cfb0ae39be6f5ae3a11 100644
> --- a/arch/arm64/boot/dts/qcom/sm6125-xiaomi-laurel-sprout.dts
> +++ b/arch/arm64/boot/dts/qcom/sm6125-xiaomi-laurel-sprout.dts
> @@ -119,6 +119,18 @@ active-config0 {
>  			};
>  		};
>  	};
> +
> +	ts_vdd_supply: ts-vdd-supply {

ts_vdd_supply: vreg-ts-vdd

OR

ts_vdd_supply: regulator-ts-vdd

(It migth require to be moved up in the file according to the sorting
rules).


> +		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>;
> +	};
>  };
>  

-- 
With best wishes
Dmitry

Re: [PATCH v2 1/3] dt-bindings: input: touchscreen: edt-ft5x06: Add FocalTech FT3518

[Krzysztof Kozlowski]

On Wed, Jan 14, 2026 at 11:31:06AM +0200, Yedaya Katsman wrote:
> 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>
> Signed-off-by: Yedaya Katsman <yedaya.ka@gmail.com>
> ---
>  Documentation/devicetree/bindings/input/touchscreen/edt-ft5x06.yaml | 1 +
>  1 file changed, 1 insertion(+)

Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>

Best regards,
Krzysztof