linux-kernel - Re: [linux-sunxi] [PATCH v3] drm/sun4i: mixer: Read id from DT

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Message-ID: <CAGb2v67ShNTqYAKXRWwhKxzcyVw512bVmNrr-Kv-oDdVq+=yEQ@mail.gmail.com>
Date:   Wed, 11 Jul 2018 21:55:31 +0800
From:   Chen-Yu Tsai <wens@...e.org>
To:     Jernej Skrabec <jernej.skrabec@...l.net>
Cc:     Maxime Ripard <maxime.ripard@...tlin.com>,
        Rob Herring <robh+dt@...nel.org>,
        David Airlie <airlied@...ux.ie>,
        Mark Rutland <mark.rutland@....com>,
        dri-devel <dri-devel@...ts.freedesktop.org>,
        devicetree <devicetree@...r.kernel.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        linux-sunxi <linux-sunxi@...glegroups.com>
Subject: Re: [linux-sunxi] [PATCH v3] drm/sun4i: mixer: Read id from DT

On Wed, Jul 11, 2018 at 7:27 PM, Jernej Skrabec <jernej.skrabec@...l.net> wrote:
> Currently, TCON supports 2 ways to match TCON with engine (mixer in this
> case). Old way is to just traverse of graph backwards and compare node
> pointer. New way is to match TCON and engine by their respective ids.
> All SoCs with DE2 enabled till now used the old way, which means mixer
> id was never used and thus never implemented.
>
> However, for R40, only the new way will be used. To prepare for that,
> implement mixer id fetching from DT.
>
> Signed-off-by: Jernej Skrabec <jernej.skrabec@...l.net>

Reviewed-by: Chen-Yu Tsai <wens@...e.org>