linux-kernel - Re: [PATCH v2 01/11] dt-bindings: update the binding for Allwinner H3 TVE support

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Message-ID: <20170609164915.enap3epreg5vr2gy@flea.home>
Date:   Fri, 9 Jun 2017 18:49:15 +0200
From:   Maxime Ripard <maxime.ripard@...e-electrons.com>
To:     Icenowy Zheng <icenowy@...c.io>
Cc:     Rob Herring <robh+dt@...nel.org>, Chen-Yu Tsai <wens@...e.org>,
        Jernej Škrabec <jernej.skrabec@...l.net>,
        dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-clk@...r.kernel.org, linux-sunxi@...glegroups.com
Subject: Re: [PATCH v2 01/11] dt-bindings: update the binding for Allwinner
 H3 TVE support

On Wed, Jun 07, 2017 at 04:48:50PM +0800, Icenowy Zheng wrote:
> >> @@ -189,6 +211,8 @@ supported.
> >>  Required properties:
> >>    - compatible: value must be one of:
> >>      * allwinner,sun8i-v3s-de2-mixer
> >> +    * allwinner,sun8i-h3-de2-mixer0
> >> +    * allwinner,sun8i-h3-de2-mixer1
> >
> >Again, please explain why we need to have different compatibles
> >here. If it's only about the number of planes, this should be dealt
> >with a property, not a compatible.
> 
> Only mixer0 has "VEP" and write-back support, at least on H3.

What is that VEP? writeback support can also be expressed by a
property.

Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com

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