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path: root/drivers/mmc/host/sdhci-esdhc-imx.c
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Diffstat (limited to 'drivers/mmc/host/sdhci-esdhc-imx.c')
-rw-r--r--drivers/mmc/host/sdhci-esdhc-imx.c18
1 files changed, 7 insertions, 11 deletions
diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c
index 790e7b2c02af..e31265abe9b3 100644
--- a/drivers/mmc/host/sdhci-esdhc-imx.c
+++ b/drivers/mmc/host/sdhci-esdhc-imx.c
@@ -674,7 +674,8 @@ static inline void esdhc_pltfm_set_clock(struct sdhci_host *host,
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
struct pltfm_imx_data *imx_data = sdhci_pltfm_priv(pltfm_host);
unsigned int host_clock = pltfm_host->clock;
- int pre_div = 2;
+ int ddr_pre_div = imx_data->is_ddr ? 2 : 1;
+ int pre_div = 1;
int div = 1;
u32 temp, val;
@@ -689,28 +690,23 @@ static inline void esdhc_pltfm_set_clock(struct sdhci_host *host,
return;
}
- if (esdhc_is_usdhc(imx_data) && !imx_data->is_ddr)
- pre_div = 1;
-
temp = sdhci_readl(host, ESDHC_SYSTEM_CONTROL);
temp &= ~(ESDHC_CLOCK_IPGEN | ESDHC_CLOCK_HCKEN | ESDHC_CLOCK_PEREN
| ESDHC_CLOCK_MASK);
sdhci_writel(host, temp, ESDHC_SYSTEM_CONTROL);
- while (host_clock / pre_div / 16 > clock && pre_div < 256)
+ while (host_clock / (16 * pre_div * ddr_pre_div) > clock &&
+ pre_div < 256)
pre_div *= 2;
- while (host_clock / pre_div / div > clock && div < 16)
+ while (host_clock / (div * pre_div * ddr_pre_div) > clock && div < 16)
div++;
- host->mmc->actual_clock = host_clock / pre_div / div;
+ host->mmc->actual_clock = host_clock / (div * pre_div * ddr_pre_div);
dev_dbg(mmc_dev(host->mmc), "desired SD clock: %d, actual: %d\n",
clock, host->mmc->actual_clock);
- if (imx_data->is_ddr)
- pre_div >>= 2;
- else
- pre_div >>= 1;
+ pre_div >>= 1;
div--;
temp = sdhci_readl(host, ESDHC_SYSTEM_CONTROL);
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