linux-kernel - Re: [PATCH v4 2/2] media: i2c: add Himax HM1246 image sensor driver

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Message-ID: <aPP40yh7--VGpd0O@ashevche-desk.local>
Date: Sat, 18 Oct 2025 23:30:11 +0300
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To: Matthias Fend <matthias.fend@...end.at>
Cc: Mauro Carvalho Chehab <mchehab@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Hans Verkuil <hverkuil@...nel.org>,
	Sakari Ailus <sakari.ailus@...ux.intel.com>,
	Hans de Goede <hansg@...nel.org>,
	Ricardo Ribalda <ribalda@...omium.org>,
	André Apitzsch <git@...tzsch.eu>,
	Tarang Raval <tarang.raval@...iconsignals.io>,
	Benjamin Mugnier <benjamin.mugnier@...s.st.com>,
	Sylvain Petinot <sylvain.petinot@...s.st.com>,
	Dongcheng Yan <dongcheng.yan@...el.com>,
	Bryan O'Donoghue <bryan.odonoghue@...aro.org>,
	Alan Stern <stern@...land.harvard.edu>,
	Jingjing Xiong <jingjing.xiong@...el.com>,
	Heimir Thor Sverrisson <heimir.sverrisson@...il.com>,
	Mehdi Djait <mehdi.djait@...ux.intel.com>,
	Vladimir Zapolskiy <vladimir.zapolskiy@...aro.org>,
	Laurent Pinchart <laurent.pinchart@...asonboard.com>,
	Hardevsinh Palaniya <hardevsinh.palaniya@...iconsignals.io>,
	linux-media@...r.kernel.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, Hao Yao <hao.yao@...el.com>,
	bsp-development.geo@...ca-geosystems.com
Subject: Re: [PATCH v4 2/2] media: i2c: add Himax HM1246 image sensor driver

On Fri, Oct 17, 2025 at 12:49:39PM +0200, Matthias Fend wrote:
> Add a V4L2 sub-device driver for Himax HM1246 image sensor.
> 
> The Himax HM1246-AWD is a 1/3.7-Inch CMOS image sensor SoC with an active
> array size of 1296 x 976. It is programmable through an I2C interface and
> connected via parallel bus.
> 
> The sensor has an internal ISP with a complete image processing pipeline
> including control loops. However, this driver uses the sensor in raw mode
> and the entire ISP is bypassed.

...

> +	hm1246->reset_gpio =
> +		devm_gpiod_get_optional(hm1246->dev, "reset", GPIOD_OUT_HIGH);
> +	if (IS_ERR(hm1246->reset_gpio))
> +		return dev_err_probe(hm1246->dev, PTR_ERR(hm1246->reset_gpio),
> +				     "failed to get reset GPIO\n");

Rely on the reset-gpio driver instead of this.

-- 
With Best Regards,
Andy Shevchenko