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| author | Marek Vasut <marek.vasut+renesas@gmail.com> | 2018-04-09 21:47:31 +0300 |
|---|---|---|
| committer | Marek Vasut <marek.vasut+renesas@gmail.com> | 2018-04-12 00:12:00 +0300 |
| commit | f23b208ebe6a8e241b3801ccfbb2c49e680fad9b (patch) | |
| tree | ba2ba14813468b232e71d40104b0f9a61a9f6b05 /drivers | |
| parent | 8dc9a10e49381e1d5d7329d123656f19fd7f8131 (diff) | |
| download | u-boot-f23b208ebe6a8e241b3801ccfbb2c49e680fad9b.tar.xz | |
mmc: matsushita-common: Wait for command completion
Make sure to wait for the command to complete altogether, including
the trailing 8 clock cycles. This prevents the driver for accidentally
writing the CMD register too fast before the previous command fully
completed.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Jaehoon Chung <jh80.chung@samsung.com>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mmc/matsushita-common.c | 2 | ||||
| -rw-r--r-- | drivers/mmc/matsushita-common.h | 1 |
2 files changed, 3 insertions, 0 deletions
diff --git a/drivers/mmc/matsushita-common.c b/drivers/mmc/matsushita-common.c index e552a09ea1..33224bb51b 100644 --- a/drivers/mmc/matsushita-common.c +++ b/drivers/mmc/matsushita-common.c @@ -498,6 +498,8 @@ int matsu_sd_send_cmd(struct udevice *dev, struct mmc_cmd *cmd, return ret; } + matsu_sd_wait_for_irq(dev, MATSU_SD_INFO2, MATSU_SD_INFO2_SCLKDIVEN); + return ret; } diff --git a/drivers/mmc/matsushita-common.h b/drivers/mmc/matsushita-common.h index 3be91c310e..34631cb43e 100644 --- a/drivers/mmc/matsushita-common.h +++ b/drivers/mmc/matsushita-common.h @@ -38,6 +38,7 @@ #define MATSU_SD_INFO2 0x03c /* IRQ status 2 */ #define MATSU_SD_INFO2_ERR_ILA BIT(15) /* illegal access err */ #define MATSU_SD_INFO2_CBSY BIT(14) /* command busy */ +#define MATSU_SD_INFO2_SCLKDIVEN BIT(13) /* command setting reg ena */ #define MATSU_SD_INFO2_BWE BIT(9) /* write buffer ready */ #define MATSU_SD_INFO2_BRE BIT(8) /* read buffer ready */ #define MATSU_SD_INFO2_DAT0 BIT(7) /* SDDAT0 */ |