linux-kernel - Re: [PATCH v2 0/4] arm64: allwinner: a64: fix video output on Pinebook

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Message-Id: <173617837421.3282465.589306007023383641.b4-ty@csie.org>
Date: Mon, 06 Jan 2025 23:46:14 +0800
From: Chen-Yu Tsai <wens@...e.org>
To: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, 
 Jernej Skrabec <jernej.skrabec@...il.com>, 
 Samuel Holland <samuel@...lland.org>, 
 Michael Turquette <mturquette@...libre.com>, 
 Stephen Boyd <sboyd@...nel.org>, Maxime Ripard <mripard@...nel.org>, 
 Roman Beranek <me@...y.cz>, devicetree@...r.kernel.org, 
 linux-arm-kernel@...ts.infradead.org, linux-sunxi@...ts.linux.dev, 
 linux-kernel@...r.kernel.org, linux-clk@...r.kernel.org, 
 Vasily Khoruzhick <anarsoul@...il.com>
Subject: Re: [PATCH v2 0/4] arm64: allwinner: a64: fix video output on
 Pinebook

On Fri, 03 Jan 2025 23:36:56 -0800, Vasily Khoruzhick wrote:
> Since commit ca1170b69968 ("clk: sunxi-ng: a64: force select PLL_MIPI
> in TCON0 mux"), TCON0 clock parent is always set to PLL_MIPI, but
> unfortunately it breaks video output on Pinebook.
> 
> I did an experiment: I manually configured PLL_MIPI and PLL_VIDEO0_2X
> to the same clock rate and flipped the switch with devmem. Experiment
> clearly showed that whenever PLL_MIPI is selected as TCON0 clock
> parent, the video output stops working.
> 
> [...]

Applied to sunxi/for-next in sunxi/linux.git, thanks!

[1/4] dt-bindings: clock: sunxi: Export PLL_VIDEO_2X and PLL_MIPI
      https://git.kernel.org/sunxi/linux/c/9897831de614
[2/4] clk: sunxi-ng: a64: drop redundant CLK_PLL_VIDEO0_2X and CLK_PLL_MIPI
      https://git.kernel.org/sunxi/linux/c/0f368cb7ef10
[3/4] arm64: dts: allwinner: a64: explicitly assign clock parent for TCON0
      https://git.kernel.org/sunxi/linux/c/8715c91a8365
[4/4] clk: sunxi-ng: a64: stop force-selecting PLL-MIPI as TCON0 parent
      https://git.kernel.org/sunxi/linux/c/383ca7bee8a9

Best regards,
-- 
Chen-Yu Tsai <wens@...e.org>