linux-kernel - Re: [PATCH] ARM: dts: meson8: Use a higher default GPU clock frequency

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Message-Id: <162728713307.14205.9620047585632922207.b4-ty@baylibre.com>
Date:   Mon, 26 Jul 2021 10:12:39 +0200
From:   Neil Armstrong <narmstrong@...libre.com>
To:     linux-amlogic@...ts.infradead.org,
        Martin Blumenstingl <martin.blumenstingl@...glemail.com>
Cc:     Neil Armstrong <narmstrong@...libre.com>, jbrunet@...libre.com,
        khilman@...libre.com,
        Demetris Ierokipides <ierokipides.dem@...il.com>,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH] ARM: dts: meson8: Use a higher default GPU clock frequency

Hi,

On Sun, 11 Jul 2021 23:40:23 +0200, Martin Blumenstingl wrote:
> We are seeing "imprecise external abort (0x1406)" errors during boot
> (which then cause the whole board to hang) on Meson8 (but not Meson8m2).
> These are observed while trying to access the GPU's registers when the
> MALI clock is running at it's default setting of 24MHz. The 3.10 vendor
> kernel uses 318.75MHz as "default" GPU frequency. Using that makes the
> "imprecise external aborts" go away.
> Add the assigned-clocks and assigned-clock-rates properties to also bump
> the MALI clock to 318.75MHz before accessing any of it's registers.

Thanks, Applied to https://git.kernel.org/pub/scm/linux/kernel/git/amlogic/linux.git (for-next)

[1/1] ARM: dts: meson8: Use a higher default GPU clock frequency
      https://git.kernel.org/amlogic/c/44cf630bcb8c5ec78125805c9447dd5766792224

-- 
Neil