linux-kernel - Re: [linux-sunxi] [PATCH v9 0/2] Initial Allwinner V3s CSI Support

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Message-Id: <20180329090256.e9621262cf069c475a706087@magewell.com>
Date:   Thu, 29 Mar 2018 09:02:56 +0800
From:   Yong <yong.deng@...ewell.com>
To:     Martin Kelly <mkelly@...o.com>
Cc:     Maxime Ripard <maxime.ripard@...e-electrons.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Chen-Yu Tsai <wens@...e.org>,
        "David S. Miller" <davem@...emloft.net>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Randy Dunlap <rdunlap@...radead.org>,
        Hans Verkuil <hans.verkuil@...co.com>,
        Stanimir Varbanov <stanimir.varbanov@...aro.org>,
        Benjamin Gaignard <benjamin.gaignard@...aro.org>,
        Arnd Bergmann <arnd@...db.de>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Ramesh Shanmugasundaram <ramesh.shanmugasundaram@...renesas.com>,
        Yannick Fertre <yannick.fertre@...com>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Todor Tomov <todor.tomov@...aro.org>,
        linux-media@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-sunxi@...glegroups.com
Subject: Re: [linux-sunxi] [PATCH v9 0/2] Initial Allwinner V3s CSI Support

Hi,

On Wed, 28 Mar 2018 16:29:47 -0700
Martin Kelly <mkelly@...o.com> wrote:

> On 03/05/2018 05:51 PM, Yong Deng wrote:
> > This patchset add initial support for Allwinner V3s CSI.
> > 
> > Allwinner V3s SoC features two CSI module. CSI0 is used for MIPI CSI-2
> > interface and CSI1 is used for parallel interface. This is not
> > documented in datasheet but by test and guess.
> > 
> > This patchset implement a v4l2 framework driver and add a binding
> > documentation for it.
> > 
> > Currently, the driver only support the parallel interface. And has been
> > tested with a BT1120 signal which generating from FPGA. The following
> > fetures are not support with this patchset:
> >    - ISP
> >    - MIPI-CSI2
> >    - Master clock for camera sensor
> >    - Power regulator for the front end IC
> > 
> 
> Hi Yong,
> 
> Thanks so much, this driver is a great contribution!
> 
> Unfortunately the board I'm working with (nanopi neo air) uses the MIPI 
> CSI-2 CSI0 interface rather than CSI1. Do you have any plans to support 
> the MIPI CSI-2 interface at some point? If not, do you know the scope of 
> what would be involved?

AFAIK, there is no document about MIPI CSI-2. You can take a look at the
source code in BSP:
https://github.com/friendlyarm/h3_lichee/tree/master/linux-3.4/drivers/media/video/sunxi-vfe/mipi_csi
And try to port it to mainline.

Thanks,
Yong