linux-kernel - Re: [PATCH 19/22] soc: sunxi: mbus: Add A31 ISP compatibles to the list

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Message-ID: <YT8BkjAZUGGYTR9l@aptenodytes>
Date:   Mon, 13 Sep 2021 09:45:22 +0200
From:   Paul Kocialkowski <paul.kocialkowski@...tlin.com>
To:     Samuel Holland <samuel@...lland.org>
Cc:     Yong Deng <yong.deng@...ewell.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Maxime Ripard <mripard@...nel.org>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Hans Verkuil <hans.verkuil@...co.com>,
        Chen-Yu Tsai <wens@...e.org>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Helen Koike <helen.koike@...labora.com>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
        linux-media@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-sunxi@...ts.linux.dev,
        linux-kernel@...r.kernel.org, linux-phy@...ts.infradead.org,
        linux-clk@...r.kernel.org, linux-staging@...ts.linux.dev
Subject: Re: [PATCH 19/22] soc: sunxi: mbus: Add A31 ISP compatibles to the
 list

Hi Samuel,

On Fri 10 Sep 21, 21:36, Samuel Holland wrote:
> On 9/10/21 1:41 PM, Paul Kocialkowski wrote:
> > The A31 ISP sits on the mbus and requires the usual bus address
> > adaptation. Add its compatibles to the list.
> 
> My understanding is that this driver only exists to work around old DT
> bindings where the interconnects/interconnect-names = "dma-mem"
> properties are not required (and so they are historically missing from
> the device trees).
> 
> For new bindings, it would be better to use those properties and not add
> to this list.

Oh okay, I didn't really look into it and just did the same thing that was
done for the CSI controller. Thanks for the heads up!

Paul

> Regards,
> Samuel
> 
> > Signed-off-by: Paul Kocialkowski <paul.kocialkowski@...tlin.com>
> > ---
> >  drivers/soc/sunxi/sunxi_mbus.c | 2 ++
> >  1 file changed, 2 insertions(+)
> > 
> > diff --git a/drivers/soc/sunxi/sunxi_mbus.c b/drivers/soc/sunxi/sunxi_mbus.c
> > index d90e4a264b6f..7f0079ea30b1 100644
> > --- a/drivers/soc/sunxi/sunxi_mbus.c
> > +++ b/drivers/soc/sunxi/sunxi_mbus.c
> > @@ -37,6 +37,7 @@ static const char * const sunxi_mbus_devices[] = {
> >  	"allwinner,sun5i-a13-video-engine",
> >  	"allwinner,sun6i-a31-csi",
> >  	"allwinner,sun6i-a31-display-backend",
> > +	"allwinner,sun6i-a31-isp",
> >  	"allwinner,sun7i-a20-csi0",
> >  	"allwinner,sun7i-a20-display-backend",
> >  	"allwinner,sun7i-a20-display-frontend",
> > @@ -50,6 +51,7 @@ static const char * const sunxi_mbus_devices[] = {
> >  	"allwinner,sun8i-h3-csi",
> >  	"allwinner,sun8i-h3-video-engine",
> >  	"allwinner,sun8i-v3s-csi",
> > +	"allwinner,sun8i-v3s-isp",
> >  	"allwinner,sun9i-a80-display-backend",
> >  	"allwinner,sun50i-a64-csi",
> >  	"allwinner,sun50i-a64-video-engine",
> > 
> 

-- 
Paul Kocialkowski, Bootlin
Embedded Linux and kernel engineering
https://bootlin.com

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