This is a note to let you know that I've just added the patch titled
mmc: omap_hsmmc: Fix UHS card with DDR50 support
to the 3.18-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
mmc-omap_hsmmc-fix-uhs-card-with-ddr50-support.patch
and it can be found in the queue-3.18 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 903101a83949d6fc77c092cef07e9c1e10c07e46 Mon Sep 17 00:00:00 2001
From: Ulf Hansson <ulf.hansson@xxxxxxxxxx>
Date: Tue, 25 Nov 2014 13:05:13 +0100
Subject: mmc: omap_hsmmc: Fix UHS card with DDR50 support
From: Ulf Hansson <ulf.hansson@xxxxxxxxxx>
commit 903101a83949d6fc77c092cef07e9c1e10c07e46 upstream.
The commit, mmc: omap: clarify DDR timing mode between SD-UHS and eMMC,
switched omap_hsmmc to support MMC DDR mode instead of UHS DDR50 mode.
Add UHS DDR50 mode again and this time let's also keep the MMC DDR mode.
Fixes: 5438ad95a57c (mmc: omap: clarify DDR timing mode between SD-UHS and eMMC)
Reported-by: Kishon Vijay Abraham I <kishon@xxxxxx>
Signed-off-by: Ulf Hansson <ulf.hansson@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/mmc/host/omap_hsmmc.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -609,6 +609,7 @@ static void omap_hsmmc_set_clock(struct
*/
if ((mmc_slot(host).features & HSMMC_HAS_HSPE_SUPPORT) &&
(ios->timing != MMC_TIMING_MMC_DDR52) &&
+ (ios->timing != MMC_TIMING_UHS_DDR50) &&
((OMAP_HSMMC_READ(host->base, CAPA) & HSS) == HSS)) {
regval = OMAP_HSMMC_READ(host->base, HCTL);
if (clkdiv && (clk_get_rate(host->fclk)/clkdiv) > 25000000)
@@ -628,7 +629,8 @@ static void omap_hsmmc_set_bus_width(str
u32 con;
con = OMAP_HSMMC_READ(host->base, CON);
- if (ios->timing == MMC_TIMING_MMC_DDR52)
+ if (ios->timing == MMC_TIMING_MMC_DDR52 ||
+ ios->timing == MMC_TIMING_UHS_DDR50)
con |= DDR; /* configure in DDR mode */
else
con &= ~DDR;
Patches currently in stable-queue which might be from ulf.hansson@xxxxxxxxxx are
queue-3.18/mmc-sdhci-pci-o2micro-fix-dell-e5440-issue.patch
queue-3.18/mmc-block-add-newline-to-sysfs-display-of-force_ro.patch
queue-3.18/mmc-dw_mmc-avoid-write-to-cdthrctl-on-older-versions.patch
queue-3.18/mmc-omap_hsmmc-fix-uhs-card-with-ddr50-support.patch
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