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path: root/drivers/mmc/host/sdhci-of-esdhc.c
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Diffstat (limited to 'drivers/mmc/host/sdhci-of-esdhc.c')
-rw-r--r--drivers/mmc/host/sdhci-of-esdhc.c39
1 files changed, 28 insertions, 11 deletions
diff --git a/drivers/mmc/host/sdhci-of-esdhc.c b/drivers/mmc/host/sdhci-of-esdhc.c
index 9a6eb4492172..d3aa67142839 100644
--- a/drivers/mmc/host/sdhci-of-esdhc.c
+++ b/drivers/mmc/host/sdhci-of-esdhc.c
@@ -431,6 +431,7 @@ static void esdhc_of_set_clock(struct sdhci_host *host, unsigned int clock)
struct sdhci_esdhc *esdhc = sdhci_pltfm_priv(pltfm_host);
int pre_div = 1;
int div = 1;
+ u32 timeout;
u32 temp;
host->mmc->actual_clock = 0;
@@ -451,8 +452,8 @@ static void esdhc_of_set_clock(struct sdhci_host *host, unsigned int clock)
}
temp = sdhci_readl(host, ESDHC_SYSTEM_CONTROL);
- temp &= ~(ESDHC_CLOCK_IPGEN | ESDHC_CLOCK_HCKEN | ESDHC_CLOCK_PEREN
- | ESDHC_CLOCK_MASK);
+ temp &= ~(ESDHC_CLOCK_SDCLKEN | ESDHC_CLOCK_IPGEN | ESDHC_CLOCK_HCKEN |
+ ESDHC_CLOCK_PEREN | ESDHC_CLOCK_MASK);
sdhci_writel(host, temp, ESDHC_SYSTEM_CONTROL);
while (host->max_clk / pre_div / 16 > clock && pre_div < 256)
@@ -472,7 +473,21 @@ static void esdhc_of_set_clock(struct sdhci_host *host, unsigned int clock)
| (div << ESDHC_DIVIDER_SHIFT)
| (pre_div << ESDHC_PREDIV_SHIFT));
sdhci_writel(host, temp, ESDHC_SYSTEM_CONTROL);
- mdelay(1);
+
+ /* Wait max 20 ms */
+ timeout = 20;
+ while (!(sdhci_readl(host, ESDHC_PRSSTAT) & ESDHC_CLOCK_STABLE)) {
+ if (timeout == 0) {
+ pr_err("%s: Internal clock never stabilised.\n",
+ mmc_hostname(host->mmc));
+ return;
+ }
+ timeout--;
+ mdelay(1);
+ }
+
+ temp |= ESDHC_CLOCK_SDCLKEN;
+ sdhci_writel(host, temp, ESDHC_SYSTEM_CONTROL);
}
static void esdhc_pltfm_set_bus_width(struct sdhci_host *host, int width)
@@ -569,16 +584,19 @@ static const struct sdhci_ops sdhci_esdhc_le_ops = {
};
static const struct sdhci_pltfm_data sdhci_esdhc_be_pdata = {
- .quirks = ESDHC_DEFAULT_QUIRKS | SDHCI_QUIRK_BROKEN_CARD_DETECTION
- | SDHCI_QUIRK_NO_CARD_NO_RESET
- | SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
+ .quirks = ESDHC_DEFAULT_QUIRKS |
+#ifdef CONFIG_PPC
+ SDHCI_QUIRK_BROKEN_CARD_DETECTION |
+#endif
+ SDHCI_QUIRK_NO_CARD_NO_RESET |
+ SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
.ops = &sdhci_esdhc_be_ops,
};
static const struct sdhci_pltfm_data sdhci_esdhc_le_pdata = {
- .quirks = ESDHC_DEFAULT_QUIRKS | SDHCI_QUIRK_BROKEN_CARD_DETECTION
- | SDHCI_QUIRK_NO_CARD_NO_RESET
- | SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
+ .quirks = ESDHC_DEFAULT_QUIRKS |
+ SDHCI_QUIRK_NO_CARD_NO_RESET |
+ SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
.ops = &sdhci_esdhc_le_ops,
};
@@ -643,8 +661,7 @@ static int sdhci_esdhc_probe(struct platform_device *pdev)
of_device_is_compatible(np, "fsl,p5020-esdhc") ||
of_device_is_compatible(np, "fsl,p4080-esdhc") ||
of_device_is_compatible(np, "fsl,p1020-esdhc") ||
- of_device_is_compatible(np, "fsl,t1040-esdhc") ||
- of_device_is_compatible(np, "fsl,ls1021a-esdhc"))
+ of_device_is_compatible(np, "fsl,t1040-esdhc"))
host->quirks &= ~SDHCI_QUIRK_BROKEN_CARD_DETECTION;
if (of_device_is_compatible(np, "fsl,ls1021a-esdhc"))