Hello, On Tuesday, July 06, 2010 7:03 PM Darius Augulis wrote: > On 06/28/2010 09:01 AM, Marek Szyprowski wrote: > > 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. > > yes, I've tried that, but didn't get sd card working. I got schematics > from China manufacturer, SD card connection is the same like in > smdk2416. with mmc debug enabled I found that SD card is detected when > inserted or removed, but after detection card initialisation is not > performed. Does it work without my patches or with other Linux kernel? You can try to check the custom Linux 2.6.29 from git://git.kernel.org/pub/scm/linux/kernel/git/kki_ap/linux-2.6-samsung.git I would like to know whether my patches cause the problem or there is some kind of hardware issue with your board. Best regards -- Marek Szyprowski Samsung Poland R&D Center -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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