[U-Boot] [PATCH] mmc: sdhci: Fix MMC HS200 tuning command failures

Siva Durga Prasad Paladugu siva.durga.paladugu at xilinx.com
Tue Jun 12 12:00:07 UTC 2018


This patch fixes the mmc tuning command failures
when tuning pattern data needs to read back for
comparision against the excpected bit pattern.

Signed-off-by: Siva Durga Prasad Paladugu <siva.durga.paladugu at xilinx.com>
---
 drivers/mmc/sdhci.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/mmc/sdhci.c b/drivers/mmc/sdhci.c
index 40e28ab..cdeba91 100644
--- a/drivers/mmc/sdhci.c
+++ b/drivers/mmc/sdhci.c
@@ -161,8 +161,8 @@ static int sdhci_send_command(struct mmc *mmc, struct mmc_cmd *cmd,
        /* We shouldn't wait for data inihibit for stop commands, even
           though they might use busy signaling */
        if (cmd->cmdidx == MMC_CMD_STOP_TRANSMISSION ||
-           cmd->cmdidx == MMC_CMD_SEND_TUNING_BLOCK ||
-           cmd->cmdidx == MMC_CMD_SEND_TUNING_BLOCK_HS200)
+           ((cmd->cmdidx == MMC_CMD_SEND_TUNING_BLOCK ||
+             cmd->cmdidx == MMC_CMD_SEND_TUNING_BLOCK_HS200) && !data))
                mask &= ~SDHCI_DATA_INHIBIT;

        while (sdhci_readl(host, SDHCI_PRESENT_STATE) & mask) {
@@ -184,8 +184,8 @@ static int sdhci_send_command(struct mmc *mmc, struct mmc_cmd *cmd,
        sdhci_writel(host, SDHCI_INT_ALL_MASK, SDHCI_INT_STATUS);

        mask = SDHCI_INT_RESPONSE;
-       if (cmd->cmdidx == MMC_CMD_SEND_TUNING_BLOCK ||
-           cmd->cmdidx == MMC_CMD_SEND_TUNING_BLOCK_HS200)
+       if ((cmd->cmdidx == MMC_CMD_SEND_TUNING_BLOCK ||
+            cmd->cmdidx == MMC_CMD_SEND_TUNING_BLOCK_HS200) && !data)
                mask = SDHCI_INT_DATA_AVAIL;

        if (!(cmd->resp_type & MMC_RSP_PRESENT))
--
2.7.4

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