[PATCH] mci i.MX esdhc: Fix clock divider calculation

Steffen Trumtrar s.trumtrar at pengutronix.de
Wed May 22 03:46:21 EDT 2013


On Tue, May 21, 2013 at 09:27:08PM +0200, Sascha Hauer wrote:
> On Tue, May 21, 2013 at 12:29:20PM +0200, Steffen Trumtrar wrote:
> > From: Sascha Hauer <s.hauer at pengutronix.de>
> > 
> > This updates the i.MX esdhc divider settings to FSLs U-Boot.
> > Current timings work fine for SD cards, but not for eMMC.
> > Although the calculation is fine according to the datasheet and reading from
> > eMMC works, writing is broken. Atleast on i.MX53/tqma53.
> > With this patch the result is the same, but uses different divider values to
> > achieve it.
> > 
> > While at it, replace the udelay with a busy-loop.
> > 
> > Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
> > Signed-off-by: Steffen Trumtrar <s.trumtrar at pengutronix.de>
> > ---
> >  drivers/mci/imx-esdhc.c | 46 +++++++++++++++++++++++++++-------------------
> >  drivers/mci/imx-esdhc.h |  1 +
> >  2 files changed, 28 insertions(+), 19 deletions(-)
> 
> Could you rebase this one on -next?
> 
> Sascha
> 

Sure. Will resend in a second.

Steffen

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