diff options
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/host/sdhci.c | 9 | ||||
| -rw-r--r-- | drivers/mmc/host/sdhci.h | 2 |
2 files changed, 10 insertions, 1 deletions
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index c8ca3ce316c4..39bbbd754781 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -3359,7 +3359,14 @@ void sdhci_cqe_enable(struct mmc_host *mmc) ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL); ctrl &= ~SDHCI_CTRL_DMA_MASK; - if (host->flags & SDHCI_USE_64_BIT_DMA) + /* + * Host from V4.10 supports ADMA3 DMA type. + * ADMA3 performs integrated descriptor which is more suitable + * for cmd queuing to fetch both command and transfer descriptors. + */ + if (host->v4_mode && (host->caps1 & SDHCI_CAN_DO_ADMA3)) + ctrl |= SDHCI_CTRL_ADMA3; + else if (host->flags & SDHCI_USE_64_BIT_DMA) ctrl |= SDHCI_CTRL_ADMA64; else ctrl |= SDHCI_CTRL_ADMA32; diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h index 924e03332cf7..01002cba1359 100644 --- a/drivers/mmc/host/sdhci.h +++ b/drivers/mmc/host/sdhci.h @@ -92,6 +92,7 @@ #define SDHCI_CTRL_ADMA1 0x08 #define SDHCI_CTRL_ADMA32 0x10 #define SDHCI_CTRL_ADMA64 0x18 +#define SDHCI_CTRL_ADMA3 0x18 #define SDHCI_CTRL_8BITBUS 0x20 #define SDHCI_CTRL_CDTEST_INS 0x40 #define SDHCI_CTRL_CDTEST_EN 0x80 @@ -234,6 +235,7 @@ #define SDHCI_RETUNING_MODE_SHIFT 14 #define SDHCI_CLOCK_MUL_MASK 0x00FF0000 #define SDHCI_CLOCK_MUL_SHIFT 16 +#define SDHCI_CAN_DO_ADMA3 0x08000000 #define SDHCI_SUPPORT_HS400 0x80000000 /* Non-standard */ #define SDHCI_CAPABILITIES_1 0x44 |