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

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Message-ID: <20260120193600.1089458-2-morf3089@gmail.com>
Date: Tue, 20 Jan 2026 20:36:00 +0100
From: Gianluca Boiano <morf3089@...il.com>
To: hansg@...nel.org
Cc: dmitry.torokhov@...il.com,
	robh@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org,
	linux-input@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Gianluca Boiano <morf3089@...il.com>
Subject: [PATCH 2/2] input: touchscreen: novatek-nvt-ts: Add support for NT36672A e7t variant

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@...il.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