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Date:   Mon, 11 Jan 2021 08:25:30 +0800
From:   Shawn Guo <>
To:     Guido Günther <>
Cc:     Rob Herring <>,
        Sascha Hauer <>,
        Pengutronix Kernel Team <>,
        Fabio Estevam <>,
        NXP Linux Team <>,
        Peng Fan <>,
        Dong Aisheng <>,
        Anson Huang <>,
        Krzysztof Kozlowski <>,
        Shengjiu Wang <>,
        Philipp Zabel <>,,,
Subject: Re: [PATCH v2] arm64: dts: imx8mq: Add clock parents for mipi dphy

On Sun, Jan 10, 2021 at 05:55:51PM +0100, Guido Günther wrote:
> This makes sure the clock tree setup for the dphy is not dependent on
> other components.
> Without this change bringing up the display can fail like
>   kernel: phy phy-30a00300.dphy.2: Invalid CM/CN/CO values: 165/217/1
>   kernel: phy phy-30a00300.dphy.2: for hs_clk/ref_clk=451656000/593999998 ~ 165/217
> if LCDIF doesn't set up that part of the clock tree first. This was
> noticed when testing the Librem 5 devkit with defconfig. It doesn't
> happen when modules are built in.
> Signed-off-by: Guido Günther <>

Applied, thanks.

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