Messages in this thread | | | Date | Thu, 30 Jul 2009 20:21:09 +0100 | From | Ian Molton <> | Subject | Re: MMC: Make the configuration memory resource optional |
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Guennadi Liakhovetski wrote:
> While you're at it, please, consider swapping the two lines in > tmio_mmc_probe(): > > - tmio_mmc_clk_stop(host); > reset(host); > + tmio_mmc_clk_stop(host); > > Otherwise, I think, reset causes problems trying to access the controller > with disabled clock. At least this is needed on SuperH.
Interesting. I'll see what the result of this is on TMIO - This sequence was garnered from the WinCE driver for the chip.
I cant see _why_ this should be a problem, as this disables the card clock, not HCLK. Could you debug further in tmio_mmc_clk_stop() please and see if reordering only one of the two IO accesses cures this?
Let me know what you find out.
-Ian
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