diff options
Diffstat (limited to 'drivers/mmc/host/mxs-mmc.c')
| -rw-r--r-- | drivers/mmc/host/mxs-mmc.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/drivers/mmc/host/mxs-mmc.c b/drivers/mmc/host/mxs-mmc.c index f0a52edc613c..bd5e47423129 100644 --- a/drivers/mmc/host/mxs-mmc.c +++ b/drivers/mmc/host/mxs-mmc.c @@ -569,11 +569,19 @@ static void mxs_mmc_adtc(struct mxs_mmc_host *host) val = BF(log2_block_size, SSP_BLOCK_SIZE_BLOCK_SIZE) | BF(cmd->data->blocks - 1, SSP_BLOCK_SIZE_BLOCK_COUNT); __raw_writel(val, host->ssp_base + HW_SSP_BLOCK_SIZE); - if (host->mmc->ios.bus_width & MMC_BUS_WIDTH_DDR) - /* Enable the DDR mode */ + if (host->mmc->ios.bus_width & MMC_BUS_WIDTH_DDR) { + /* + * Enable the DDR mode + * Make sure the POLARITY bit is cleared + */ + __raw_writel(BM_SSP_CTRL1_POLARITY, \ + host->ssp_base + HW_SSP_CTRL1_CLR); ssp_cmd0 |= BM_SSP_CMD0_DBL_DATA_RATE_EN; - else + } else { + __raw_writel(BM_SSP_CTRL1_POLARITY, \ + host->ssp_base + HW_SSP_CTRL1_SET); ssp_cmd0 &= ~BM_SSP_CMD0_DBL_DATA_RATE_EN; + } } } else { |