This is a note to let you know that I've just added the patch titled
mmc: sdhci: add quirk for broken HS200 support
to the 3.13-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-sdhci-add-quirk-for-broken-hs200-support.patch
and it can be found in the queue-3.13 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 13868bf20f2f2c305f96e23620b024e167d6f9cb Mon Sep 17 00:00:00 2001
From: David Cohen <david.a.cohen@xxxxxxxxxxxxxxx>
Date: Tue, 29 Oct 2013 10:58:26 -0700
Subject: mmc: sdhci: add quirk for broken HS200 support
From: David Cohen <david.a.cohen@xxxxxxxxxxxxxxx>
commit 13868bf20f2f2c305f96e23620b024e167d6f9cb upstream.
This patch defines a quirk for platforms unable to enable HS200 support.
Signed-off-by: David Cohen <david.a.cohen@xxxxxxxxxxxxxxx>
Reviewed-by: Chuanxiao Dong <chuanxiao.dong@xxxxxxxxx>
Acked-by: Dong Aisheng <b29396@xxxxxxxxxxxxx>
Signed-off-by: Chris Ball <chris@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/mmc/host/sdhci.c | 3 ++-
include/linux/mmc/sdhci.h | 2 ++
2 files changed, 4 insertions(+), 1 deletion(-)
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -3004,7 +3004,8 @@ int sdhci_add_host(struct sdhci_host *ho
/* SD3.0: SDR104 is supported so (for eMMC) the caps2
* field can be promoted to support HS200.
*/
- mmc->caps2 |= MMC_CAP2_HS200;
+ if (!(host->quirks2 & SDHCI_QUIRK2_BROKEN_HS200))
+ mmc->caps2 |= MMC_CAP2_HS200;
} else if (caps[1] & SDHCI_SUPPORT_SDR50)
mmc->caps |= MMC_CAP_UHS_SDR50;
--- a/include/linux/mmc/sdhci.h
+++ b/include/linux/mmc/sdhci.h
@@ -98,6 +98,8 @@ struct sdhci_host {
#define SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON (1<<4)
/* Controller has a non-standard host control register */
#define SDHCI_QUIRK2_BROKEN_HOST_CONTROL (1<<5)
+/* Controller does not support HS200 */
+#define SDHCI_QUIRK2_BROKEN_HS200 (1<<6)
int irq; /* Device IRQ */
void __iomem *ioaddr; /* Mapped address */
Patches currently in stable-queue which might be from david.a.cohen@xxxxxxxxxxxxxxx are
queue-3.13/mmc-sdhci-pci-add-broken-hs200-quirk-for-intel-merrifield.patch
queue-3.13/mmc-sdhci-add-quirk-for-broken-hs200-support.patch
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