linux-kernel - Re: [PATCH] mmc: sunxi: allow 3.3V DDR when DDR is available

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Message-ID: <20180724084447.bbqxchp5yamzc54i@flea>
Date:   Tue, 24 Jul 2018 10:44:47 +0200
From:   Maxime Ripard <maxime.ripard@...tlin.com>
To:     Icenowy Zheng <icenowy@...c.io>
Cc:     Ulf Hansson <ulf.hansson@...aro.org>, Chen-Yu Tsai <wens@...e.org>,
        linux-mmc@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-sunxi@...glegroups.com
Subject: Re: [PATCH] mmc: sunxi: allow 3.3V DDR when DDR is available

On Sun, Jul 22, 2018 at 08:54:07PM +0800, Icenowy Zheng wrote:
> Some Allwinner boards feature an on-board eMMC with fixed 3.3V voltage
> (e.g. Banana Pi M2+), and in this case both the eMMC and the SoC are
> capable of doing 3.3V DDR transmission.
> 
> Add capability of 3.3V DDR when DDR is available (extra clock or new
> timing).
> 
> Signed-off-by: Icenowy Zheng <icenowy@...c.io>

Acked-by: Maxime Ripard <maxime.ripard@...tlin.com>

Maxime

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

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