linux-kernel - Re: [PATCH v2 09/10] ARM: dts: sun7i-a20: Add Video Engine and reserved memory nodes

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Date:   Fri, 04 May 2018 10:54:18 +0200
From:   Paul Kocialkowski <paul.kocialkowski@...tlin.com>
To:     Maxime Ripard <maxime.ripard@...tlin.com>
Cc:     linux-media@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-sunxi@...glegroups.com,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Chen-Yu Tsai <wens@...e.org>, Pawel Osciak <pawel@...iak.com>,
        Marek Szyprowski <m.szyprowski@...sung.com>,
        Kyungmin Park <kyungmin.park@...sung.com>,
        Hans Verkuil <hans.verkuil@...co.com>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Arnd Bergmann <arnd@...db.de>,
        Alexandre Courbot <acourbot@...omium.org>,
        Tomasz Figa <tfiga@...omium.org>
Subject: Re: [PATCH v2 09/10] ARM: dts: sun7i-a20: Add Video Engine and
 reserved memory nodes

On Fri, 2018-05-04 at 10:47 +0200, Paul Kocialkowski wrote:
> > > > Don't you also need to map the SRAM on the A20?
> > > 
> > > That's a good point, there is currently no syscon handle for A20
> > > (and
> > > also A13). Maybe SRAM is muxed to the VE by default so it "just
> > > works"? 

I just checked on the manual and it appears that SRAM Area C1 is muxed
to the VE at reset, so we can probably keep things as-is until the SRAM
driver is ready to handle explicitly muxing that area to the VE.

-- 
Paul Kocialkowski, Bootlin (formerly Free Electrons)
Embedded Linux and kernel engineering
https://bootlin.com
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