linux-kernel - Re: [PATCH] ARM: dts: sun8i: sun8i-a83t-bananapi-m3: enhance vcc-pd to 3.3v

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Message-ID: <20180711082434.euhakdczf56p3fia@flea>
Date:   Wed, 11 Jul 2018 10:24:34 +0200
From:   Maxime Ripard <maxime.ripard@...tlin.com>
To:     Corentin Labbe <clabbe@...libre.com>
Cc:     linux@...linux.org.uk, mark.rutland@....com, robh+dt@...nel.org,
        wens@...e.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-sunxi@...glegroups.com
Subject: Re: [PATCH] ARM: dts: sun8i: sun8i-a83t-bananapi-m3: enhance vcc-pd
 to 3.3v

On Mon, Jul 09, 2018 at 07:51:54PM +0000, Corentin Labbe wrote:
> Since commit d7c5f6863550 ("ARM: dts: sun8i: a83t: bananapi-m3: Add AXP813 regulator nodes")
> my BPIM3 no longer works at gigabit speed.
> 
> With the default setting, dldo3 is regulated at 2.9v which seems
> sufficient for the PHy but d7c5f6863550 drop it to 2.5 which is insufficient.
> Note that this behaviour is random for all BPIM3 (some works with 2.5, some not)
> 
> Finnaly, someone from bananapi confirmed that this regulator must be set to 3.3
> 
> Fixes: d7c5f6863550 ("ARM: dts: sun8i: a83t: bananapi-m3: Add AXP813 regulator nodes")
> Signed-off-by: Corentin Labbe <clabbe@...libre.com>

Applied, thanks!
Maxime

-- 
Maxime Ripard, Bootlin (formerly Free Electrons)
Embedded Linux and Kernel engineering
https://bootlin.com

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