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| author |   Adrian Hunter <adrian.hunter@intel.com> | 2016-11-02 15:49:10 +0200 |
|---|---|---|
| committer |   Ulf Hansson <ulf.hansson@linaro.org> | 2016-11-07 13:26:43 +0100 |
| commit | fe5fb2e3b58f866f82a80fe7c7866ea6d0b306b9 (patch) | |
| tree | 2fa84f01674ebbe68a53b75bdbd9b5458a872244 /drivers/mmc/host/sdhci.c | |
| parent | mmc: sdhci: Fix unexpected data interrupt handling (diff) | |
| download | linux-dev-fe5fb2e3b58f866f82a80fe7c7866ea6d0b306b9.tar.xz linux-dev-fe5fb2e3b58f866f82a80fe7c7866ea6d0b306b9.zip | |
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 '')
| -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 0dd3c31e23bb..542aabc48032 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; |