From: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
To: Luke Macken <luke@phorex.org>,
andersson@kernel.org, konradybcio@kernel.org
Cc: abelvesa@kernel.org, robh@kernel.org, krzk+dt@kernel.org,
conor+dt@kernel.org, srinivas.kandagatla@oss.qualcomm.com,
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 Elan touchpad at 0x15
Date: Thu, 15 Oct 2026 11:07:25 +0200 [thread overview]
Message-ID: <61d16700-ba79-43e9-91c1-41185363eb92@oss.qualcomm.com> (raw)
In-Reply-To: <20261014234949.1730808-1-luke@phorex.org>
On 10/15/26 1:49 AM, Luke Macken wrote:
> Like the T14s Gen 6, the Gen 7 ships with either a Synaptics touchpad at
> I2C address 0x2c or an Elan one at 0x15. The dts only describes the
> Synaptics part, so on Elan units (e.g. 22A7000VUS) the touchpad@2c probe
> fails silently (nothing answers at that address) and there is no
> touchpad, while an I2C scan finds the device at 0x15.
>
> Describe both, as x1e78100-lenovo-thinkpad-t14s.dtsi does; the absent one
> fails probe harmlessly. Both share the interrupt GPIO, so move the
> tpad_default pinctrl state from the Synaptics node to the i2c0 bus node
> rather than have two nodes claim the same pin.
>
> Assisted-by: LLM
> Signed-off-by: Luke Macken <luke@phorex.org>
> ---
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Konrad
prev parent reply other threads:[~2026-10-15 9:07 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-14 23:49 Luke Macken
2026-10-15 9:07 ` Konrad Dybcio [this message]
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