From: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
To: Abel Vesa <abel.vesa@oss.qualcomm.com>,
Bjorn Andersson <andersson@kernel.org>,
Konrad Dybcio <konradybcio@kernel.org>,
Abel Vesa <abelvesa@kernel.org>, Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>
Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] arm64: dts: qcom: mahua-lenovo-thinkpad-t14s-gen7: Add touchscreen support
Date: Mon, 9 Nov 2026 11:21:52 +0100 [thread overview]
Message-ID: <099aaf7d-f0a0-41a8-be75-98912e11094a@oss.qualcomm.com> (raw)
In-Reply-To: <20261106-mahua-t14s-gen7-touchscreen-v1-1-d638ddd34170@oss.qualcomm.com>
On 11/6/26 9:47 PM, Abel Vesa wrote:
> The touch SKU of the ThinkPad T14s Gen 7 has a HID-over-I2C
> touchscreen (Parade, HID 1da0:3009) at address 0x24 on QUP i2c8.
> Its interrupt is GPIO 51 (level, active low) and GPIO 48 is the
> active-low reset line, which is kept deasserted.
>
> Describe it so the touchscreen works.
>
> Signed-off-by: Abel Vesa <abel.vesa@oss.qualcomm.com>
> ---
[...]
> + ts0_default: ts0-default-state {
> + int-n-pins {
> + pins = "gpio51";
> + function = "gpio";
> + drive-strength = <2>;
> + bias-pull-up;
> + };
> +
> + reset-n-pins {
> + pins = "gpio48";
> + function = "gpio";
> + drive-strength = <2>;
> + bias-disable;
> + output-high;
I'm afraid you'll need to add specific bindings for this touchscreen
instead, see:
https://lore.kernel.org/lkml/82a96d57-94fc-470a-b7eb-f0fde0c0dad6@oss.qualcomm.com/
Konrad
prev parent reply other threads:[~2026-11-09 10:21 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-11-06 20:47 Abel Vesa
2026-11-09 10:21 ` Konrad Dybcio [this message]
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