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>
diff --git a/drivers/mmc/sandbox_mmc.c b/drivers/mmc/sandbox_mmc.c
index fdb29a5..8a5d256 100644
--- a/drivers/mmc/sandbox_mmc.c
+++ b/drivers/mmc/sandbox_mmc.c
@@ -48,9 +48,12 @@
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: