diff options
Diffstat (limited to 'drivers/mmc/core/core.c')
| -rw-r--r-- | drivers/mmc/core/core.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c index 4a18d90556d9..5c83c67b186c 100644 --- a/drivers/mmc/core/core.c +++ b/drivers/mmc/core/core.c @@ -297,6 +297,21 @@ void mmc_set_data_timeout(struct mmc_data *data, const struct mmc_card *card) data->timeout_clks = 0; } } + /* + * Some cards need very high timeouts if driven in SPI mode. + * The worst observed timeout was 900ms after writing a + * continuous stream of data until the internal logic + * overflowed. + */ + if (mmc_host_is_spi(card->host)) { + if (data->flags & MMC_DATA_WRITE) { + if (data->timeout_ns < 1000000000) + data->timeout_ns = 1000000000; /* 1s */ + } else { + if (data->timeout_ns < 100000000) + data->timeout_ns = 100000000; /* 100ms */ + } + } } EXPORT_SYMBOL(mmc_set_data_timeout); |