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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 <hvaibhav@ti.com>
Signed-off-by: Abhilash K V <abhilash.kv@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
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Abhilash K V authored and Tony Lindgren committed Dec 9, 2011
1 parent a15164f commit e89715a
Showing 1 changed file with 9 additions and 1 deletion.
10 changes: 9 additions & 1 deletion arch/arm/mach-omap2/hsmmc.c
Original file line number Diff line number Diff line change
Expand Up @@ -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;
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