diff options
| author | Jean-Jacques Hiblot | 2017-12-14 11:47:14 +0100 |
|---|---|---|
| committer | Jaehoon Chung | 2018-01-12 18:11:04 +0900 |
| commit | 49f89252ed4abf7f3899731f914f6b67462ea690 (patch) | |
| tree | f2ad0d2643d235589094160a05d2a8420c767ff1 | |
| parent | c9d3f34e77dc53798f9757d31aeb020b8fee460c (diff) | |
dm: mmc: sandbox: Update SD card emulation
The SDcard initialization procedure does a few more things than it did earlier:
* switch the bus width even for 1-bit bus width
* check that speed has been properly set (in resp[4] of SD_CMD_SWITCH_FUNC)
Update the SD simulator to handle those requests gracefully.
Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
| -rw-r--r-- | drivers/mmc/sandbox_mmc.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/mmc/sandbox_mmc.c b/drivers/mmc/sandbox_mmc.c index fdb29a5505c..8a5d256c115 100644 --- a/drivers/mmc/sandbox_mmc.c +++ b/drivers/mmc/sandbox_mmc.c @@ -48,9 +48,12 @@ static int sandbox_mmc_send_cmd(struct udevice *dev, struct mmc_cmd *cmd, cmd->response[1] = 10 << 16; /* 1 << block_len */ break; case SD_CMD_SWITCH_FUNC: { + if (!data) + break; u32 *resp = (u32 *)data->dest; - resp[7] = cpu_to_be32(SD_HIGHSPEED_BUSY); + if ((cmd->cmdarg & 0xF) == UHS_SDR12_BUS_SPEED) + resp[4] = (cmd->cmdarg & 0xF) << 24; break; } case MMC_CMD_READ_SINGLE_BLOCK: |