SD_CMD2
SD_CMD2, 0xFF, (u8)(cmd->arg >> 16));
rtsx_usb_add_cmd(ucr, READ_REG_CMD, SD_CMD2, 0, 0);
SD_CMD2, 0xFF, (u8)(cmd->arg >> 16));
rtsx_usb_add_cmd(ucr, READ_REG_CMD, SD_CMD2, 0, 0);
rtsx_usb_add_cmd(ucr, WRITE_REG_CMD, SD_CMD2, 0xFF, (u8)(arg >> 16));