[U-Boot] [PATCH v2 1/2] mmc: sdhci: Update sdhci_send_command() to handle HS200

Siva Durga Prasad Paladugu siva.durga.paladugu at xilinx.com
Tue May 29 14:33:10 UTC 2018


This patch updates sdhci_send_command() to handle MMC
HS200 tuning command.

Signed-off-by: Siva Durga Prasad Paladugu <siva.durga.paladugu at xilinx.com>
---
Changes from v1:
- Fixed spacings as per comment
---
 drivers/mmc/sdhci.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/mmc/sdhci.c b/drivers/mmc/sdhci.c
index 400f87e..40e28ab 100644
--- a/drivers/mmc/sdhci.c
+++ b/drivers/mmc/sdhci.c
@@ -161,7 +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 ||
+           cmd->cmdidx == MMC_CMD_SEND_TUNING_BLOCK_HS200)
                mask &= ~SDHCI_DATA_INHIBIT;

        while (sdhci_readl(host, SDHCI_PRESENT_STATE) & mask) {
@@ -183,7 +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)
+       if (cmd->cmdidx == MMC_CMD_SEND_TUNING_BLOCK ||
+           cmd->cmdidx == MMC_CMD_SEND_TUNING_BLOCK_HS200)
                mask = SDHCI_INT_DATA_AVAIL;

        if (!(cmd->resp_type & MMC_RSP_PRESENT))
@@ -201,7 +203,8 @@ static int sdhci_send_command(struct mmc *mmc, struct mmc_cmd *cmd,
                flags |= SDHCI_CMD_CRC;
        if (cmd->resp_type & MMC_RSP_OPCODE)
                flags |= SDHCI_CMD_INDEX;
-       if (data || cmd->cmdidx ==  MMC_CMD_SEND_TUNING_BLOCK)
+       if (data || cmd->cmdidx ==  MMC_CMD_SEND_TUNING_BLOCK ||
+           cmd->cmdidx == MMC_CMD_SEND_TUNING_BLOCK_HS200)
                flags |= SDHCI_CMD_DATA;

        /* Set Transfer mode regarding to data flag */
--
2.7.4

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