A "send status" command is added with the commit "mmc: checking status after commands with R1b response". But the status register returned from send status command of SPI protocol is different from that of MMC/SD protocol. We do a simple test and generate a response in stead of full bit-by-bit translation.
Signed-off-by: Thomas Chou thomas@wytron.com.tw --- for u-boot
drivers/mmc/mmc_spi.c | 5 +++++ include/mmc.h | 1 + 2 files changed, 6 insertions(+), 0 deletions(-)
diff --git a/drivers/mmc/mmc_spi.c b/drivers/mmc/mmc_spi.c index dc7574c..49fb9e0 100644 --- a/drivers/mmc/mmc_spi.c +++ b/drivers/mmc/mmc_spi.c @@ -208,6 +208,11 @@ static int mmc_spi_request(struct mmc *mmc, struct mmc_cmd *cmd, cmd->response[0] = swab32(cmd->response[0]); debug("r32 %x\n", cmd->response[0]); break; + case MMC_CMD_SEND_STATUS: + spi_xfer(spi, 1 * 8, NULL, cmd->response, 0); + cmd->response[0] = (cmd->response[0] & 0xff) ? + MMC_STATUS_ERROR : MMC_STATUS_RDY_FOR_DATA; + break; } } else { debug("%s:data %x %x %x\n", __func__, diff --git a/include/mmc.h b/include/mmc.h index 1a0d00a..f502d86 100644 --- a/include/mmc.h +++ b/include/mmc.h @@ -102,6 +102,7 @@ #define MMC_STATUS_MASK (~0x0206BF7F) #define MMC_STATUS_RDY_FOR_DATA (1 << 8) #define MMC_STATUS_CURR_STATE (0xf << 9) +#define MMC_STATUS_ERROR (1 << 19)
#define MMC_VDD_165_195 0x00000080 /* VDD voltage 1.65 - 1.95 */ #define MMC_VDD_20_21 0x00000100 /* VDD voltage 2.0 ~ 2.1 */