diff options
Diffstat (limited to 'drivers/mmc/mmc.c')
| -rw-r--r-- | drivers/mmc/mmc.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c index b69ce15..3679225 100644 --- a/drivers/mmc/mmc.c +++ b/drivers/mmc/mmc.c @@ -36,6 +36,13 @@ static struct list_head mmc_devices; static int cur_dev_num = -1; +int __board_mmc_getcd(u8 *cd, struct mmc *mmc) { + return -1; +} + +int board_mmc_getcd(u8 *cd, struct mmc *mmc)__attribute__((weak, + alias("__board_mmc_getcd"))); + int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data) { return mmc->send_cmd(mmc, cmd, data); @@ -273,7 +280,15 @@ sd_send_op_cond(struct mmc *mmc) cmd.cmdidx = SD_CMD_APP_SEND_OP_COND; cmd.resp_type = MMC_RSP_R3; - cmd.cmdarg = mmc->voltages; + + /* + * Most cards do not answer if some reserved bits + * in the ocr are set. However, Some controller + * can set bit 7 (reserved for low voltages), but + * how to manage low voltages SD card is not yet + * specified. + */ + cmd.cmdarg = mmc->voltages & 0xff8000; if (mmc->version == SD_VERSION_2) cmd.cmdarg |= OCR_HCS; |