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dm: mmc: sandbox: Update SD card emulation

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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>
This commit is contained in:
Jean-Jacques Hiblot 2017-12-14 11:47:14 +01:00 committed by Jaehoon Chung
parent c9d3f34e77
commit 49f89252ed
1 changed files with 4 additions and 1 deletions
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5
drivers/mmc/sandbox_mmc.c
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@ -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: