diff options
| -rw-r--r-- | drivers/mmc/matsushita-common.c | 10 | ||||
| -rw-r--r-- | drivers/mmc/matsushita-common.h | 4 |
2 files changed, 11 insertions, 3 deletions
diff --git a/drivers/mmc/matsushita-common.c b/drivers/mmc/matsushita-common.c index 7e05b1f..11e4553 100644 --- a/drivers/mmc/matsushita-common.c +++ b/drivers/mmc/matsushita-common.c @@ -339,7 +339,15 @@ static int matsu_sd_dma_xfer(struct udevice *dev, struct mmc_data *data) if (data->flags & MMC_DATA_READ) { buf = data->dest; dir = DMA_FROM_DEVICE; - poll_flag = MATSU_SD_DMA_INFO1_END_RD2; + /* + * The DMA READ completion flag position differs on Socionext + * and Renesas SoCs. It is bit 20 on Socionext SoCs and using + * bit 17 is a hardware bug and forbidden. It is bit 17 on + * Renesas SoCs and bit 20 does not work on them. + */ + poll_flag = (priv->caps & MATSU_SD_CAP_RCAR) ? + MATSU_SD_DMA_INFO1_END_RD : + MATSU_SD_DMA_INFO1_END_RD2; tmp |= MATSU_SD_DMA_MODE_DIR_RD; } else { buf = (void *)data->src; diff --git a/drivers/mmc/matsushita-common.h b/drivers/mmc/matsushita-common.h index a10ad20..8c81bbc 100644 --- a/drivers/mmc/matsushita-common.h +++ b/drivers/mmc/matsushita-common.h @@ -96,8 +96,8 @@ #define MATSU_SD_DMA_RST_RD BIT(9) #define MATSU_SD_DMA_RST_WR BIT(8) #define MATSU_SD_DMA_INFO1 0x420 -#define MATSU_SD_DMA_INFO1_END_RD2 BIT(20) /* DMA from device is complete*/ -#define MATSU_SD_DMA_INFO1_END_RD BIT(17) /* Don't use! Hardware bug */ +#define MATSU_SD_DMA_INFO1_END_RD2 BIT(20) /* DMA from device is complete (uniphier) */ +#define MATSU_SD_DMA_INFO1_END_RD BIT(17) /* DMA from device is complete (renesas) */ #define MATSU_SD_DMA_INFO1_END_WR BIT(16) /* DMA to device is complete */ #define MATSU_SD_DMA_INFO1_MASK 0x424 #define MATSU_SD_DMA_INFO2 0x428 |