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ARM: OMAP: hsmmc: Support for AM3517 MMC1 voltages

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This patch fixes the following error message which appears
while intializing MMC1 on the AM3517 EVM base-board:
    mmc0: host doesn't support card's voltages
    mmc0: error -22 whilst initialising SD card
The ocr_mask, which enumerates the volatges supported by the
MMC card was not being indicated before, assuming that a separate
Vcc regulator maybe another controllable regulator driver would be
doing this. This patch statically specifies a subset of the voltages
supported by the MMC driver, which are provided by the current fixed
voltage regulator on AM3517 EVM.

Signed-off-by: Vaibhav Hiremath <[email protected]>
Signed-off-by: Abhilash K V <[email protected]>
Signed-off-by: Tony Lindgren <[email protected]>
This commit is contained in:
Abhilash K V 2011-12-09 12:27:36 -08:00 • committed by Tony Lindgren
commit e89715a7e4
1 changed files with 9 additions and 1 deletions
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10
arch/arm/mach-omap2/hsmmc.c
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@ -353,7 +353,15 @@ static int __init omap_hsmmc_pdata_init(struct omap2_hsmmc_info *c,
*
* temporary HACK: ocr_mask instead of fixed supply
*/
mmc->slots[0].ocr_mask = c->ocr_mask;
if (cpu_is_omap3505() || cpu_is_omap3517())
mmc->slots[0].ocr_mask = MMC_VDD_165_195 |
MMC_VDD_26_27 |
MMC_VDD_27_28 |
MMC_VDD_29_30 |
MMC_VDD_30_31 |
MMC_VDD_31_32;
else
mmc->slots[0].ocr_mask = c->ocr_mask;
if (!cpu_is_omap3517() && !cpu_is_omap3505())
mmc->slots[0].features |= HSMMC_HAS_PBIAS;