diff options
Diffstat (limited to 'drivers/mmc/host/sdhci-msm.c')
| -rw-r--r-- | drivers/mmc/host/sdhci-msm.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/mmc/host/sdhci-msm.c b/drivers/mmc/host/sdhci-msm.c index e44b7a66b73c..290a14cdc1cf 100644 --- a/drivers/mmc/host/sdhci-msm.c +++ b/drivers/mmc/host/sdhci-msm.c @@ -2089,6 +2089,23 @@ static void sdhci_msm_cqe_disable(struct mmc_host *mmc, bool recovery) sdhci_cqe_disable(mmc, recovery); } +static void sdhci_msm_set_timeout(struct sdhci_host *host, struct mmc_command *cmd) +{ + u32 count, start = 15; + + __sdhci_set_timeout(host, cmd); + count = sdhci_readb(host, SDHCI_TIMEOUT_CONTROL); + /* + * Update software timeout value if its value is less than hardware data + * timeout value. Qcom SoC hardware data timeout value was calculated + * using 4 * MCLK * 2^(count + 13). where MCLK = 1 / host->clock. + */ + if (cmd && cmd->data && host->clock > 400000 && + host->clock <= 50000000 && + ((1 << (count + start)) > (10 * host->clock))) + host->data_timeout = 22LL * NSEC_PER_SEC; +} + static const struct cqhci_host_ops sdhci_msm_cqhci_ops = { .enable = sdhci_msm_cqe_enable, .disable = sdhci_msm_cqe_disable, @@ -2438,6 +2455,7 @@ static const struct sdhci_ops sdhci_msm_ops = { .irq = sdhci_msm_cqe_irq, .dump_vendor_regs = sdhci_msm_dump_vendor_regs, .set_power = sdhci_set_power_noreg, + .set_timeout = sdhci_msm_set_timeout, }; static const struct sdhci_pltfm_data sdhci_msm_pdata = { |