[PATCH 1/2] dt-bindings: input: novatek,nvt-ts: Add nt36672a-e7t-ts compatible

[PATCH 1/2] dt-bindings: input: novatek,nvt-ts: Add nt36672a-e7t-ts compatible

[Gianluca Boiano]

Add compatible string for the Novatek NT36672A e7t touchscreen variant
found on the Xiaomi Redmi Note 6 Pro (tulip).

This variant uses different chip parameters compared to the standard
NT36672A, specifically a different wake_type value.

Signed-off-by: Gianluca Boiano <morf3089@gmail.com>
---
 .../devicetree/bindings/input/touchscreen/novatek,nvt-ts.yaml    | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/input/touchscreen/novatek,nvt-ts.yaml b/Documentation/devicetree/bindings/input/touchscreen/novatek,nvt-ts.yaml
index bd6a60486d1f..aaa9976bd65e 100644
--- a/Documentation/devicetree/bindings/input/touchscreen/novatek,nvt-ts.yaml
+++ b/Documentation/devicetree/bindings/input/touchscreen/novatek,nvt-ts.yaml
@@ -17,6 +17,7 @@ properties:
     enum:
       - novatek,nt11205-ts
       - novatek,nt36672a-ts
+      - novatek,nt36672a-e7t-ts
 
   reg:
     maxItems: 1
-- 
2.52.0

[PATCH 2/2] input: touchscreen: novatek-nvt-ts: Add support for NT36672A e7t variant

[Gianluca Boiano]

Add support for the Novatek NT36672A touchscreen variant found on the
Xiaomi Redmi Note 6 Pro (tulip) which uses a different wake_type value
(0x02 instead of 0x01).

The touchscreen was failing to initialize with error -5 due to the
wake_type parameter mismatch during probe. This adds a new chip data
structure for the e7t variant with the correct wake_type value.

Closes: https://github.com/sdm660-mainline/linux/issues/155
Signed-off-by: Gianluca Boiano <morf3089@gmail.com>
---
 drivers/input/touchscreen/novatek-nvt-ts.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/input/touchscreen/novatek-nvt-ts.c b/drivers/input/touchscreen/novatek-nvt-ts.c
index 44b58e0dc1ad..b1c379d87de0 100644
--- a/drivers/input/touchscreen/novatek-nvt-ts.c
+++ b/drivers/input/touchscreen/novatek-nvt-ts.c
@@ -323,9 +323,15 @@ static const struct nvt_ts_i2c_chip_data nvt_nt36672a_ts_data = {
 	.chip_id = 0x08,
 };
 
+static const struct nvt_ts_i2c_chip_data nvt_nt36672a_e7t_ts_data = {
+	.wake_type = 0x02,
+	.chip_id = 0x08,
+};
+
 static const struct of_device_id nvt_ts_of_match[] = {
 	{ .compatible = "novatek,nt11205-ts", .data = &nvt_nt11205_ts_data },
 	{ .compatible = "novatek,nt36672a-ts", .data = &nvt_nt36672a_ts_data },
+	{ .compatible = "novatek,nt36672a-e7t-ts", .data = &nvt_nt36672a_e7t_ts_data },
 	{ }
 };
 MODULE_DEVICE_TABLE(of, nvt_ts_of_match);
@@ -333,6 +339,7 @@ MODULE_DEVICE_TABLE(of, nvt_ts_of_match);
 static const struct i2c_device_id nvt_ts_i2c_id[] = {
 	{ "nt11205-ts", (unsigned long) &nvt_nt11205_ts_data },
 	{ "nt36672a-ts", (unsigned long) &nvt_nt36672a_ts_data },
+	{ "nt36672a-e7t-ts", (unsigned long) &nvt_nt36672a_e7t_ts_data },
 	{ }
 };
 MODULE_DEVICE_TABLE(i2c, nvt_ts_i2c_id);
-- 
2.52.0

Re: [PATCH 2/2] input: touchscreen: novatek-nvt-ts: Add support for NT36672A e7t variant

[Krzysztof Kozlowski]

On Tue, Jan 20, 2026 at 08:36:00PM +0100, Gianluca Boiano wrote:
> Add support for the Novatek NT36672A touchscreen variant found on the
> Xiaomi Redmi Note 6 Pro (tulip) which uses a different wake_type value
> (0x02 instead of 0x01).
> 
> The touchscreen was failing to initialize with error -5 due to the
> wake_type parameter mismatch during probe. This adds a new chip data
> structure for the e7t variant with the correct wake_type value.
> 
> Closes: https://github.com/sdm660-mainline/linux/issues/155

I don't think this is useful, because it's downstream/fork/distro with
at least 100 patches on top of v6.18 (so not even current mainline!).
Calling a repo "mainline" does not make it mainline and we do not track
distro bugs.

Also, lack of a feature is not a bug which needs to be closed.

Drop the tag.

Best regards,
Krzysztof

Re: [PATCH 1/2] dt-bindings: input: novatek,nvt-ts: Add nt36672a-e7t-ts compatible

[Krzysztof Kozlowski]

On Tue, Jan 20, 2026 at 08:35:59PM +0100, Gianluca Boiano wrote:
> Add compatible string for the Novatek NT36672A e7t touchscreen variant
> found on the Xiaomi Redmi Note 6 Pro (tulip).
> 
> This variant uses different chip parameters compared to the standard
> NT36672A, specifically a different wake_type value.
> 
> Signed-off-by: Gianluca Boiano <morf3089@gmail.com>
> ---
>  .../devicetree/bindings/input/touchscreen/novatek,nvt-ts.yaml    | 1 +
>  1 file changed, 1 insertion(+)

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

Best regards,
Krzysztof

Re: [PATCH 2/2] input: touchscreen: novatek-nvt-ts: Add support for NT36672A e7t variant

[Hans de Goede]

Hi Gianluca,

On 20-Jan-26 20:36, Gianluca Boiano wrote:
> Add support for the Novatek NT36672A touchscreen variant found on the
> Xiaomi Redmi Note 6 Pro (tulip) which uses a different wake_type value
> (0x02 instead of 0x01).
> 
> The touchscreen was failing to initialize with error -5 due to the
> wake_type parameter mismatch during probe. This adds a new chip data
> structure for the e7t variant with the correct wake_type value.
> 
> Closes: https://github.com/sdm660-mainline/linux/issues/155
> Signed-off-by: Gianluca Boiano <morf3089@gmail.com>

Thank you for your patch.

I don't think that adding a new compatible + a new nvt_ts_i2c_chip_data
struct is the right approach here.

I guess the wake-type byte simply encodes some IRQ config settings,
which may indeed be different in different applications using
the some touchscreen controller.

Instead of adding a new compatible my suggestion to fix this would
be to simply drop the wake_type check as well as drop the wake_type
member from struct nvt_ts_i2c_chip_data.

This way you can fix the driver not working on the Xiaomi Redmi
Note 6 Pro by removing code instead of adding code :)

And supporting other models also becomes easier.

Regards,

Hans




> ---
>  drivers/input/touchscreen/novatek-nvt-ts.c | 7 +++++++
>  1 file changed, 7 insertions(+)
> 
> diff --git a/drivers/input/touchscreen/novatek-nvt-ts.c b/drivers/input/touchscreen/novatek-nvt-ts.c
> index 44b58e0dc1ad..b1c379d87de0 100644
> --- a/drivers/input/touchscreen/novatek-nvt-ts.c
> +++ b/drivers/input/touchscreen/novatek-nvt-ts.c
> @@ -323,9 +323,15 @@ static const struct nvt_ts_i2c_chip_data nvt_nt36672a_ts_data = {
>  	.chip_id = 0x08,
>  };
>  
> +static const struct nvt_ts_i2c_chip_data nvt_nt36672a_e7t_ts_data = {
> +	.wake_type = 0x02,
> +	.chip_id = 0x08,
> +};
> +
>  static const struct of_device_id nvt_ts_of_match[] = {
>  	{ .compatible = "novatek,nt11205-ts", .data = &nvt_nt11205_ts_data },
>  	{ .compatible = "novatek,nt36672a-ts", .data = &nvt_nt36672a_ts_data },
> +	{ .compatible = "novatek,nt36672a-e7t-ts", .data = &nvt_nt36672a_e7t_ts_data },
>  	{ }
>  };
>  MODULE_DEVICE_TABLE(of, nvt_ts_of_match);
> @@ -333,6 +339,7 @@ MODULE_DEVICE_TABLE(of, nvt_ts_of_match);
>  static const struct i2c_device_id nvt_ts_i2c_id[] = {
>  	{ "nt11205-ts", (unsigned long) &nvt_nt11205_ts_data },
>  	{ "nt36672a-ts", (unsigned long) &nvt_nt36672a_ts_data },
> +	{ "nt36672a-e7t-ts", (unsigned long) &nvt_nt36672a_e7t_ts_data },
>  	{ }
>  };
>  MODULE_DEVICE_TABLE(i2c, nvt_ts_i2c_id);