diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mmc/mmc.c | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c index 3d445c0..64c8d56 100644 --- a/drivers/mmc/mmc.c +++ b/drivers/mmc/mmc.c @@ -367,18 +367,33 @@ sd_send_op_cond(struct mmc *mmc) int mmc_send_op_cond(struct mmc *mmc) { - int timeout = 1000; + int timeout = 10000; struct mmc_cmd cmd; int err; /* Some cards seem to need this */ mmc_go_idle(mmc); + /* Asking to the card its capabilities */ + cmd.cmdidx = MMC_CMD_SEND_OP_COND; + cmd.resp_type = MMC_RSP_R3; + cmd.cmdarg = 0; + cmd.flags = 0; + + err = mmc_send_cmd(mmc, &cmd, NULL); + + if (err) + return err; + + udelay(1000); + do { cmd.cmdidx = MMC_CMD_SEND_OP_COND; cmd.resp_type = MMC_RSP_R3; - cmd.cmdarg = OCR_HCS | (mmc_host_is_spi(mmc) ? 0 : - mmc->voltages); + cmd.cmdarg = (mmc_host_is_spi(mmc) ? 0 : + (mmc->voltages & + (cmd.response[0] & OCR_VOLTAGE_MASK)) | + (cmd.response[0] & OCR_ACCESS_MODE)); cmd.flags = 0; err = mmc_send_cmd(mmc, &cmd, NULL); |