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Date:   Thu, 16 May 2019 10:31:04 +0200
From:   Maxime Ripard <>
To:     Jernej Skrabec <>
Subject: Re: [PATCH 0/2] drm/sun4i: Fix sun8i HDMI PHY initialization

On Tue, May 14, 2019 at 10:43:35PM +0200, Jernej Skrabec wrote:
> I received a report that 4K resolution doesn't work if U-Boot video
> driver is disabled. It turns out that HDMI PHY clock driver was
> initialized prematurely, before reset line was deasserted and clocks
> enabled. U-Boot video driver masked the issue because it set pixel
> clock correctly.
> In the process of researching the bug, I also found out that few bits
> in HDMI PHY registers were not set correctly. While there is no
> noticeable change (4K resolution works with both settings), I've
> added fix anyway, to be conformant with vendor documentation.

Applied both, thanks


Maxime Ripard, Bootlin
Embedded Linux and Kernel engineering

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