On Thursday 16 January 2014 04:19 PM, Ulf Hansson wrote:
On 15 January 2014 15:11, Seungwon Jeon <tgih....@samsung.com> wrote:
Replaced UHS_DDR50 with MMC_DDR52.
CC: Balaji T K <balaj...@ti.com>
Signed-off-by: Seungwon Jeon <tgih....@samsung.com>
---
drivers/mmc/host/omap_hsmmc.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index dbd32ad..cca397e 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -540,7 +540,7 @@ static void omap_hsmmc_set_clock(struct omap_hsmmc_host
*host)
* - MMC/SD clock coming out of controller > 25MHz
*/
if ((mmc_slot(host).features & HSMMC_HAS_HSPE_SUPPORT) &&
- (ios->timing != MMC_TIMING_UHS_DDR50) &&
+ (ios->timing != MMC_TIMING_MMC_DDR52) &&
Even if I can't find anywhere that OMAP has enabled the corresponding
host caps for UHS SD cards, it still might be the case that OMAP
actually is able to handle the 1.8V I/O voltage switches and thus you
should like keep that.
Hi,
Actually the ios->timing check currently there is for eMMC DDR,
So this change is needed.
You find the omap specific hack in omap_hsmmc_switch_opcond(). Ideally
switch_opcond is for 1.8V MMC (MMC mobile) cards.
the driver should be updated to implement the
host_ops->start_signal_voltage_switch and host_ops->card_busy instead.
uhs support for sd card is not yet in mainline. voltage_switch and card_busy
ops will be get implemented for UHS sd card support.
Thanks and Regards,
Balaji T K
Maybe some the OMAP guys can tell use more to be sure.
Kind regards
Ulf Hansson
((OMAP_HSMMC_READ(host->base, CAPA) & HSS) == HSS)) {
regval = OMAP_HSMMC_READ(host->base, HCTL);
if (clkdiv && (clk_get_rate(host->fclk)/clkdiv) > 25000000)
@@ -560,7 +560,7 @@ static void omap_hsmmc_set_bus_width(struct omap_hsmmc_host
*host)
u32 con;
con = OMAP_HSMMC_READ(host->base, CON);
- if (ios->timing == MMC_TIMING_UHS_DDR50)
+ if (ios->timing == MMC_TIMING_MMC_DDR52)
con |= DDR; /* configure in DDR mode */
else
con &= ~DDR;
--
1.7.0.4
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