OMAP3 Touchbook: Fix MMC caps

MMC controller cannot handle MMC_CAP_4_BIT_DATA nor MMC_CAP_8_BIT_DATA - the card won't be detected (tested with two SDHC cards, both Class6). Thus disabling.

---
arch/arm/mach-omap2/board-omap3touchbook.c | 1 -

1 files changed, 0 insertions(+), 1 deletions(-)

index 6a60f79..e65a32d 100644
@@ -109,7 +109,6 @@ static struct omap_nand_platform_data omap3touchbook_nand_data = {

static struct omap2_hsmmc_info mmc[] = {
	{
		.mmc		= 1,
-		.caps		= MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA,
		.gpio_wp	= 29,
	},
	{}	/* Terminator */

--
1.7.4.1

Hmm it might be worth checking that the MMC data lines are muxed correctly. Maybe make sure CONFIG_OMAP_MUX_DEBUG is set in your .config and CONFIG_DEBUG_FS too. Then boot and and mount debugfs with mount -tdebugfs debugfs /sys/kernel/debug. Then you can do:

# grep -i mmc1 /sys/kernel/debug/omap_mux/* | grep dat

And check the settings. Changing the values could cause data corruption, so use a temporary root file system!

Tony

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Well, MMC_CAP_8BIT data is definetely wrong - according to schematics, there are only D0-D3 (+CLK and CMD) lines connected. I'm going to test 4 BIT and let you know.

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