S3C2416 fixes (gpiolib, SDHCI, compilation without FB device)

[Marek Szyprowski]

Hello,

On Friday, June 25, 2010 12:56 PM Darius Augulis wrote:

> On 06/22/2010 04:16 PM, Yauhen Kharuzhy wrote:
> > This patch series fixes SDHCI on S3C2416. I got SD card working with this
> patches
> > and with patches for GPIO card detection support by Marek Szyprowski.
> >
> 
> Unfortunately I did not get SD card working with these patches. I'm
> using custom board, not SMDK2416, but SD slot connection and schematics
> are the same like in SMDK2416. I've tried to debug a bit this problem
> and this is what I got: kernel do detection of card insert/remove,
> driver prints messages:
> 
> s3c-sdhci s3c-sdhci.1: card inserted.
> s3c-sdhci s3c-sdhci.1: card removed.
> 
> Then I put some printk in s3c-sdhci driver and MMC core and found that
> mmc_rescan() is called only once at startup and no more when
> inserting/removing SD card. Also mmc_rescan() stops at that point where
> mmc_power_up() is called and does not return. And mmc_power_up() stops
> where mmc_delay(10) is called and does not return too.
> Every time when inserting/removing SD card only functions
> sdhci_tasklet_card() and mmc_detect_change() are called, and nothing
> happens. Kernel doesn't detect the card inserted.
> Maybe this info could help to debug where the problem is - in my custom
> board or in your patches?

Have you tried with polled card detection method (SDHCI_CD_NONE)? If it
doesn't work I suspect something with the hardware. Checking with mmc debug
enabled might also help figuring this issue out.

Best regards
--
Marek Szyprowski
Samsung Poland R&D Center