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| author | Anup Patel <Anup.Patel@wdc.com> | 2019-07-17 04:23:38 +0000 |
|---|---|---|
| committer | Jagan Teki <jagan@amarulasolutions.com> | 2019-07-18 17:11:16 +0530 |
| commit | a706029410228dbe43345b1dce0ee6a002a63c8b (patch) | |
| tree | 2f840a58cc836771b1db4ea7acce478bb30a4545 /drivers/mmc/mmc_spi.c | |
| parent | 733391e84bd9d67582b2ecd719b35585b70fe74c (diff) | |
| download | u-boot-a706029410228dbe43345b1dce0ee6a002a63c8b.zip u-boot-a706029410228dbe43345b1dce0ee6a002a63c8b.tar.gz u-boot-a706029410228dbe43345b1dce0ee6a002a63c8b.tar.bz2 | |
mmc: mmc_spi: Use SPI_XFER_BEGIN and SPI_XFER_END flags
Most DM based SPI host controller drivers use SPI_XFER_BEGIN and
SPI_XFER_END flags to enable/disable slave chip select.
This patch extends MMC SPI driver to pass SPI_XFER_BEGIN flag when
MMC command is send at start and pass SPI_XFER_END flag using a
dummy transfer (of bitlen = 0) at the end of MMC command.
Suggested-by: Jagan Teki <jagan@amarulasolutions.com>
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Tested-by: Sagar Kadam <sagar.kadam@sifive.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
Diffstat (limited to 'drivers/mmc/mmc_spi.c')
| -rw-r--r-- | drivers/mmc/mmc_spi.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/mmc/mmc_spi.c b/drivers/mmc/mmc_spi.c index f3d687a..350812a 100644 --- a/drivers/mmc/mmc_spi.c +++ b/drivers/mmc/mmc_spi.c @@ -84,7 +84,7 @@ static int mmc_spi_sendcmd(struct udevice *dev, cmdo[4] = cmdarg >> 8; cmdo[5] = cmdarg; cmdo[6] = (crc7(0, &cmdo[1], 5) << 1) | 0x01; - ret = dm_spi_xfer(dev, sizeof(cmdo) * 8, cmdo, NULL, 0); + ret = dm_spi_xfer(dev, sizeof(cmdo) * 8, cmdo, NULL, SPI_XFER_BEGIN); if (ret) return ret; @@ -360,6 +360,8 @@ static int dm_mmc_spi_request(struct udevice *dev, struct mmc_cmd *cmd, } done: + dm_spi_xfer(dev, 0, NULL, NULL, SPI_XFER_END); + dm_spi_release_bus(dev); return ret; |