diff options
| -rw-r--r-- | drivers/mmc/sdhci.c | 18 |
1 files changed, 11 insertions, 7 deletions
diff --git a/drivers/mmc/sdhci.c b/drivers/mmc/sdhci.c index b745977..161a6b1 100644 --- a/drivers/mmc/sdhci.c +++ b/drivers/mmc/sdhci.c @@ -332,8 +332,7 @@ static int sdhci_set_clock(struct mmc *mmc, unsigned int clock) */ if (host->clk_mul) { for (div = 1; div <= 1024; div++) { - if ((host->max_clk * host->clk_mul / div) - <= clock) + if ((host->max_clk / div) <= clock) break; } @@ -547,6 +546,14 @@ int sdhci_setup_cfg(struct mmc_config *cfg, struct sdhci_host *host, #ifndef CONFIG_DM_MMC_OPS cfg->ops = &sdhci_ops; #endif + + /* Check whether the clock multiplier is supported or not */ + if (SDHCI_GET_VERSION(host) >= SDHCI_SPEC_300) { + caps_1 = sdhci_readl(host, SDHCI_CAPABILITIES_1); + host->clk_mul = (caps_1 & SDHCI_CLOCK_MUL_MASK) >> + SDHCI_CLOCK_MUL_SHIFT; + } + if (host->max_clk == 0) { if (SDHCI_GET_VERSION(host) >= SDHCI_SPEC_300) host->max_clk = (caps & SDHCI_CLOCK_V3_BASE_MASK) >> @@ -555,6 +562,8 @@ int sdhci_setup_cfg(struct mmc_config *cfg, struct sdhci_host *host, host->max_clk = (caps & SDHCI_CLOCK_BASE_MASK) >> SDHCI_CLOCK_BASE_SHIFT; host->max_clk *= 1000000; + if (host->clk_mul) + host->max_clk *= host->clk_mul; } if (host->max_clk == 0) { printf("%s: Hardware doesn't specify base clock frequency\n", @@ -590,11 +599,6 @@ int sdhci_setup_cfg(struct mmc_config *cfg, struct sdhci_host *host, if (SDHCI_GET_VERSION(host) >= SDHCI_SPEC_300) { if (!(caps & SDHCI_CAN_DO_8BIT)) cfg->host_caps &= ~MMC_MODE_8BIT; - - /* Find out whether clock multiplier is supported */ - caps_1 = sdhci_readl(host, SDHCI_CAPABILITIES_1); - host->clk_mul = (caps_1 & SDHCI_CLOCK_MUL_MASK) >> - SDHCI_CLOCK_MUL_SHIFT; } if (host->host_caps) |