From mboxrd@z Thu Jan 1 00:00:00 1970 From: Olof Johansson Subject: Re: [PATCH 1/3] ARM: multi_v7_defconfig: enable Rockchip io-domain driver Date: Tue, 22 Dec 2015 14:56:14 -0800 Message-ID: <20151222225614.GL30172@localhost> References: <2111669.2aeXLpXsWE@diego> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline In-Reply-To: <2111669.2aeXLpXsWE@diego> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+glpar-linux-rockchip=m.gmane.org-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org To: Heiko St?bner Cc: linux-rockchip-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, arm-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org List-Id: linux-rockchip.vger.kernel.org On Mon, Dec 21, 2015 at 10:21:14PM +0100, Heiko St?bner wrote: > The io-domain driver is necessary to notify the soc about voltages changes > happening on supplying regulators. Probably the most important user right > now is the mmc tuning code, where the soc needs to get notified when the > voltage is dropped to the 1.8V point. > > As this option is necessary to sucessfully tune UHS cards etc, it should > get built in. > > Signed-off-by: Heiko Stuebner > --- > When booting a Veyron-Jerry from an sd-card it got stuck, as the tuning > failed due to the missing voltage notification and the mmc completely > fails initialization of the card, if this happens. > With this option enabled, I could again boot from my sd-card. > > This is based on the Looks cut off :) Anyway, applied 1-3. -Olof