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Message-ID: <20120524180320.GO5361@opensource.wolfsonmicro.com> Date: Thu, 24 May 2012 19:03:20 +0100 From: Mark Brown <broonie@...nsource.wolfsonmicro.com> To: Fabio Estevam <festevam@...il.com> Cc: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>, Philippe Rétornaz <philippe.retornaz@...l.ch>, marc@...esign.com.au, Shawn Guo <shawn.guo@...escale.com>, Samuel Ortiz <sameo@...ux.intel.com>, Sascha Hauer <kernel@...gutronix.de>, linux-kernel <linux-kernel@...r.kernel.org> Subject: Re: mc13xxx-core: kernel hangs after 'regmap_read' On Thu, May 24, 2012 at 02:39:02PM -0300, Fabio Estevam wrote: > On Thu, May 24, 2012 at 1:41 PM, Uwe Kleine-König > > The imx spi driver can do both (GPIO and hardware CS) because not all > > pins that can do hardware CS are available as GPIO. > Right, unfortunately on mx31 the SPI CS pins cannot be used as GPIOs. > On mx51evk the SPI CS are used as GPIOs and that probably explains why > it worked on mx51evk and fails on mx31pdk. Oh dear, this affects regmap but it'll probably also affect other things - how plausible is it that we'll be able to fix in the driver (assuming it's not just hardware misprogramming)? We can probably manage to come up with something for regmap but it's the wrong level to fix things. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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