linux-kernel - Re: [PATCH 09/30] drm/sun4i: vi layer: Write attributes in one go

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Message-ID: <CAGb2v66f8qajMGCYLKPuS_mg73KejXx-OpfQqcdEf2fWDZkDig@mail.gmail.com>
Date: Tue, 28 Oct 2025 00:24:25 +0800
From: Chen-Yu Tsai <wens@...nel.org>
To: Jernej Skrabec <jernej.skrabec@...il.com>
Cc: mripard@...nel.org, maarten.lankhorst@...ux.intel.com, tzimmermann@...e.de, 
	airlied@...il.com, simona@...ll.ch, samuel@...lland.org, 
	dri-devel@...ts.freedesktop.org, linux-arm-kernel@...ts.infradead.org, 
	linux-sunxi@...ts.linux.dev, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 09/30] drm/sun4i: vi layer: Write attributes in one go

On Mon, Oct 13, 2025 at 3:23 AM Jernej Skrabec <jernej.skrabec@...il.com> wrote:
>
> It turns out that none of the VI channel registers were meant to be
> read. Mostly it works fine but sometimes it returns incorrect values.
>
> Rework VI layer code to write all registers in one go to avoid reads.
>
> This rework will also allow proper code separation.
>
> Signed-off-by: Jernej Skrabec <jernej.skrabec@...il.com>

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