linux-kernel - Re: [PATCH 0/6] media: sun6i: Separate H3 compatible from A31

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Date:   Fri, 14 Dec 2018 00:10:31 +0200
From:   sakari.ailus@....fi
To:     Chen-Yu Tsai <wens@...e.org>
Cc:     Yong Deng <yong.deng@...ewell.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Maxime Ripard <maxime.ripard@...tlin.com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        linux-media@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/6] media: sun6i: Separate H3 compatible from A31

Hi Chen-Yu,

On Fri, Nov 30, 2018 at 03:58:43PM +0800, Chen-Yu Tsai wrote:
> The CSI (camera sensor interface) controller found on the H3 (and H5)
> is a reduced version of the one found on the A31. It only has 1 channel,
> instead of 4 channels supporting time-multiplexed BT.656 on the A31.
> Since the H3 is a reduced version, it cannot "fallback" to a compatible
> that implements more features than it supports.
> 
> This series separates support for the H3 variant from the A31 variant.
> 
> Patches 1 ~ 3 separate H3 CSI from A31 CSI in the bindings, driver, and
> device tree, respectively.
> 
> Patch 4 adds a pinmux setting for the MCLK (master clock). Some camera
> sensors use the master clock from the SoC instead of a standalone
> crystal.

I've picked patches 1 and 2, but I presume patches 3 and 4 would go through
another tree. Is that right?

> 
> Patches 5 and 6 are examples of using a camera sensor with an SBC.
> Since the modules are detachable, these changes should not be merged.
> They should be implemented as overlays instead.
> 
> Please have a look.
> 
> In addition, I found that the first frame captured seems to always be
> incomplete, with either parts cropped, out of position, or missing
> color components.


-- 
Regards,

Sakari Ailus