linux-kernel - Re: [PATCH v2] media: ipu-bridge: fix error code in ipu_bridge

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Message-ID: <ZkOBaUW1uLw6ildS@smile.fi.intel.com>
Date: Tue, 14 May 2024 18:21:13 +0300
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To: Sakari Ailus <sakari.ailus@...ux.intel.com>
Cc: Dan Carpenter <dan.carpenter@...aro.org>,
	Bingbu Cao <bingbu.cao@...el.com>,
	Mauro Carvalho Chehab <mchehab@...nel.org>,
	Hans de Goede <hdegoede@...hat.com>,
	Daniel Scally <dan.scally@...asonboard.com>,
	linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
	kernel-janitors@...r.kernel.org
Subject: Re: [PATCH v2] media: ipu-bridge: fix error code in ipu_bridge_init()

On Tue, May 14, 2024 at 02:33:31PM +0000, Sakari Ailus wrote:
> On Fri, May 10, 2024 at 06:43:31PM +0300, Dan Carpenter wrote:

..

> Neither IPU3-CIO2 or IPU6 ISYS drivers should be of any functional use
> without sensors. But the power states of the devices could be affected by
> this: the drivers should power off these devices but without drivers they
> maybe left powered on. I haven't made any measurements though.

FWIW, Hans mentioned AtomISPv2 case with somewhat 7W consumption on top of
the idling machine. That's why we have a stub driver in PDx86 exactly for
the purpose of turning it off when not used.

Hans may correct me if I'm wrong in numbers or elsewhere.

-- 
With Best Regards,
Andy Shevchenko