xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

mmc: sdhci: add quirk for ACMD23 broken

Browse Source 
Add quirk to handle broken auto-CMD23.
Some controllers do not respond after the first auto-CMD23 is issued.

This allows CMD23 to still work (mandatory for the faster UHS-I mode)
rather than disabling CMD23 entirely via SDHCI_QUIRK2_HOST_NO_CMD23.

Signed-off by: Corneliu Doban <cdoban@broadcom.com>
Signed-off-by: Scott Branden <sbranden@broadcom.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Scott Branden
2015-02-09 16:06:28 -08:00
committed by Ulf Hansson
parent eeed7026b4
commit 3bfa6f030a
2 changed files with 4 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
include/linux/mmc/sdhci.h
View File

@@ -115,6 +115,8 @@ struct sdhci_host {
#define SDHCI_QUIRK2_TUNING_WORK_AROUND (1<<12)
/* disable the block count for single block transactions */
#define SDHCI_QUIRK2_SUPPORT_SINGLE (1<<13)
/* Controller broken with using ACMD23 */
#define SDHCI_QUIRK2_ACMD23_BROKEN (1<<14)
int irq; /* Device IRQ */
void __iomem *ioaddr; /* Mapped address */