linux-kernel - Re: [PATCH v2 0/7] HID/arm64: dts: qcom: sc8280xp-x13s: fix touchscreen power on

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Message-ID: <ZmBZPHbDv7ma_JaJ@hovoldconsulting.com>
Date: Wed, 5 Jun 2024 14:25:32 +0200
From: Johan Hovold <johan@...nel.org>
To: Jiri Kosina <jikos@...nel.org>,
	Benjamin Tissoires <benjamin.tissoires@...hat.com>
Cc: Bjorn Andersson <andersson@...nel.org>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Konrad Dybcio <konrad.dybcio@...aro.org>,
	Linus Walleij <linus.walleij@...aro.org>,
	Douglas Anderson <dianders@...omium.org>,
	linux-input@...r.kernel.org, devicetree@...r.kernel.org,
	linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 0/7] HID/arm64: dts: qcom: sc8280xp-x13s: fix
 touchscreen power on

Hi Jiri and Benjamin,

On Tue, May 07, 2024 at 04:48:14PM +0200, Johan Hovold wrote:
> The Elan eKTH5015M touch controller on the X13s requires a 300 ms delay
> before sending commands after having deasserted reset during power on.
> 
> This series switches the X13s devicetree to use the Elan specific
> binding so that the OS can determine the required power-on sequence and
> make sure that the controller is always detected during boot. [1]

> The devicetree changes are expected to go in through the Qualcomm tree
> once the binding and driver updates have been merged.

> [1] The reset signal is currently deasserted using the pin configuration
>     and the controller would be detected if probe is deferred or if user
>     space triggers a reprobe through sysfs.

> Johan Hovold (7):
>   dt-bindings: HID: i2c-hid: add dedicated Ilitek ILI2901 schema
>   dt-bindings: HID: i2c-hid: elan: add Elan eKTH5015M
>   dt-bindings: HID: i2c-hid: elan: add 'no-reset-on-power-off' property
>   HID: i2c-hid: elan: fix reset suspend current leakage

Could you consider picking the first four patches up for 6.10-rc3 so
that Bjorn can take the devicetree changes?

>   arm64: dts: qcom: sc8280xp-x13s: fix touchscreen power on
>   arm64: dts: qcom: sc8280xp-crd: use external pull up for touch reset
>   arm64: defconfig: enable Elan i2c-hid driver

Johan