Fixes emmc initialization regression on the db410c platform. Clearing this register while SDHCI_PRESENT_STATE reports SDHCI_CMD_INHIBIT leads to undefined behaviour on the db410c.
When commit 7dde50 was merged (mmc: sdhci: Wait for SDHCI_INT_DATA_END when transferring), SDHCI transfers transitioned to wait for bit SDHCI_INT_DATA_END before flagging transfers done. Without this patch, the db410 platform fails to initialize its eMMC due to all of its transfers timing out (SDHCI_INT_DATA_END is never raised after all the blocks have been transferred). Signed-off-by: Jorge Ramirez-Ortiz <[email protected]> --- drivers/mmc/sdhci.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/mmc/sdhci.c b/drivers/mmc/sdhci.c index 11d1f0c..f0c5aad 100644 --- a/drivers/mmc/sdhci.c +++ b/drivers/mmc/sdhci.c @@ -157,7 +157,6 @@ static int sdhci_send_command(struct mmc *mmc, struct mmc_cmd *cmd, /* Timeout unit - ms */ static unsigned int cmd_timeout = SDHCI_CMD_DEFAULT_TIMEOUT; - sdhci_writel(host, SDHCI_INT_ALL_MASK, SDHCI_INT_STATUS); mask = SDHCI_CMD_INHIBIT | SDHCI_DATA_INHIBIT; /* We shouldn't wait for data inihibit for stop commands, even @@ -181,6 +180,8 @@ static int sdhci_send_command(struct mmc *mmc, struct mmc_cmd *cmd, udelay(1000); } + sdhci_writel(host, SDHCI_INT_ALL_MASK, SDHCI_INT_STATUS); + mask = SDHCI_INT_RESPONSE; if (!(cmd->resp_type & MMC_RSP_PRESENT)) flags = SDHCI_CMD_RESP_NONE; -- 2.7.4 _______________________________________________ U-Boot mailing list [email protected] https://lists.denx.de/listinfo/u-boot
