diff options
| author | Sahitya Tummala <stummala@codeaurora.org> | 2017-05-09 11:04:01 +0530 |
|---|---|---|
| committer | Veerabhadrarao Badiganti <vbadigan@codeaurora.org> | 2017-05-24 15:51:09 +0530 |
| commit | b8189b170793ca0bce98a1b49a673d63d028b805 (patch) | |
| tree | de81ceb90ecbf40ac2d5e4a14fae929bbabf2a2a /include/linux | |
| parent | 60be71604a84d2e047215cb702d6324379a353bb (diff) | |
mmc: core: extend SDR104 workaround for other paths
UHS-I SD cards support SDR104 mode which runs the SD card interface
clock upto 208 MHz. But we may see repeated CRC errors in SDR104
with some SDCC controllers. If this happens, commit <aafc430b36f3>
("mmc: sd: reduce the bus speed in case of multiple CRC errors") would
reinit the card to lower speed (SDR50) hoping that CRC error
rate would reduce at lower clock speed (100MHz for SDR50). As the error
may happen for any cmd, this change tries to fix several other paths -
clock scaling, mmc_rescan, non-data commands error path.
Change-Id: I8ccbbf7e330cde3862d9660d3be4d67fb00d97ca
Signed-off-by: Sahitya Tummala <stummala@codeaurora.org>
Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org>
Signed-off-by: Veerabhadrarao Badiganti <vbadigan@codeaurora.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/mmc/core.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/mmc/core.h b/include/linux/mmc/core.h index 2a1a6fec179f..0065ffc9322b 100644 --- a/include/linux/mmc/core.h +++ b/include/linux/mmc/core.h @@ -223,6 +223,7 @@ extern void mmc_cmdq_clk_scaling_start_busy(struct mmc_host *host, bool lock_needed); extern void mmc_cmdq_clk_scaling_stop_busy(struct mmc_host *host, bool lock_needed, bool is_cmdq_dcmd); +extern void mmc_recovery_fallback_lower_speed(struct mmc_host *host); /** * mmc_claim_host - exclusively claim a host |