[PATCH 0/6] SD/MMC driver for MX25/35/51

Arnaud Patard (Rtp) arnaud.patard at rtp-net.org
Fri Oct 15 17:20:41 EDT 2010

Wolfram Sang <w.sang at pengutronix.de> writes:


> On Wed, Oct 13, 2010 at 11:28:15AM +0200, Arnaud Patard wrote:
>> >> it's actually not yet supported by the driver. There is a wp_gpio in
>> >> struct esdhc_platform_data (arch/arm/plat-mxc/include/mach/esdhc.h)
>> >> but it's not yet used by the driver.
>> >
>> > It's all prepared. I finally will have a look into it today.
>> oh, great. I was thinking about doing it but I'll wait for your patches
>> then. I'm sure I need support for WP on GPIO but I may also need support
>> for CD on GPIO so I'll be happy to test any patch you have.
> Just to keep you updated: Got a bit distracted again but I hope to
> finish it on Saturday. Looks like a patch for the gpiolib is also
> needed...

ok. Take your time. It turns out that the infos I had were a bit
misleading. I've been told the mmc driver was using some gpios and the
gpios are GPIO_1_0/1_1 and GPIO_1_7/1_8... which are in fact the esdhc1
and esdhc2 CD and WP. 

This means :
- with proper iomux configuration, WP detection is working fine
- I should still be able to test WP on GPIO


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