From mboxrd@z Thu Jan 1 00:00:00 1970 From: Michal Suchanek Subject: Re: [PATCH 3/9] spi: sunxi: check that transfer speed is non-zero Date: Thu, 20 Aug 2015 21:45:07 +0200 Message-ID: References: <3688fab67e7cdc7bcbff73dfd6b0fcdcc4e79eb6.1440080122.git.hramrach@gmail.com> <20150820144836.GV30520@lukather> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Cc: linux-sunxi , Rob Herring , Pawel Moll , Mark Rutland , Ian Campbell , Kumar Gala , Russell King , Mark Brown , devicetree , "linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org" , Linux Kernel Mailing List , linux-spi To: Maxime Ripard Return-path: In-Reply-To: <20150820144836.GV30520@lukather> Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-spi.vger.kernel.org On 20 August 2015 at 16:48, Maxime Ripard wrote: > On Thu, Aug 20, 2015 at 02:19:46PM -0000, Michal Suchanek wrote: >> When the maximum transfer speed is not set for a SPI slave the value >> remains 0 and the code in sunxi SPI divides by it. Use an arbitrary >> speed instead in that case. >> >> Signed-off-by: Michal Suchanek > > spi->max_speed_hz is set using the spi-max-frequency property, and > spi->will error out if that property isn't set. What am I missing? > Spidev I guess. You can set the speed to arbitrary value from userspace at any time using the spidev ioctls. Thanks Michal -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html