diff options
| author | Adrian Hunter <adrian.hunter@intel.com> | 2016-11-02 13:49:10 (GMT) |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2016-11-07 12:26:43 (GMT) |
| commit | fe5fb2e3b58f866f82a80fe7c7866ea6d0b306b9 (patch) | |
| tree | 2fa84f01674ebbe68a53b75bdbd9b5458a872244 /drivers/mmc/host/sdhci.c | |
| parent | 69b962a65a547690a356f9f76bc4f53db538ac49 (diff) | |
| download | linux-fe5fb2e3b58f866f82a80fe7c7866ea6d0b306b9.tar.xz | |
mmc: sdhci: Reset cmd and data circuits after tuning failure
To prevent subsequent commands failing, ensure the cmd and data circuits
are reset after a tuning timeout.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc/host/sdhci.c')
| -rw-r--r-- | drivers/mmc/host/sdhci.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index 0dd3c31..542aabc 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -2086,6 +2086,10 @@ static int sdhci_execute_tuning(struct mmc_host *mmc, u32 opcode) if (!host->tuning_done) { pr_info(DRIVER_NAME ": Timeout waiting for Buffer Read Ready interrupt during tuning procedure, falling back to fixed sampling clock\n"); + + sdhci_do_reset(host, SDHCI_RESET_CMD); + sdhci_do_reset(host, SDHCI_RESET_DATA); + ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2); ctrl &= ~SDHCI_CTRL_TUNED_CLK; ctrl &= ~SDHCI_CTRL_EXEC_TUNING; |