From mboxrd@z Thu Jan 1 00:00:00 1970 From: Maxime Ripard Subject: Re: [PATCH] mmc: sunxi: allow 3.3V DDR when DDR is available Date: Tue, 24 Jul 2018 10:44:47 +0200 Message-ID: <20180724084447.bbqxchp5yamzc54i@flea> References: <20180722125407.43107-1-icenowy@aosc.io> Reply-To: maxime.ripard-LDxbnhwyfcJBDgjK7y7TUQ@public.gmane.org Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="jlvfgcrbutgcc7oa" Return-path: Sender: linux-sunxi-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org Content-Disposition: inline In-Reply-To: <20180722125407.43107-1-icenowy-h8G6r0blFSE@public.gmane.org> List-Post: , List-Help: , List-Archive: , List-Unsubscribe: , To: Icenowy Zheng Cc: Ulf Hansson , Chen-Yu Tsai , linux-mmc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-sunxi-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org List-Id: linux-mmc@vger.kernel.org --jlvfgcrbutgcc7oa Content-Type: text/plain; charset="UTF-8" Content-Disposition: inline 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 Acked-by: Maxime Ripard Maxime -- Maxime Ripard, Bootlin (formerly Free Electrons) Embedded Linux and Kernel engineering https://bootlin.com --jlvfgcrbutgcc7oa--