diff options
Diffstat (limited to 'drivers/mmc/host/sdhci-of-esdhc.c')
| -rw-r--r-- | drivers/mmc/host/sdhci-of-esdhc.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/mmc/host/sdhci-of-esdhc.c b/drivers/mmc/host/sdhci-of-esdhc.c index 4b0f375..ae3fee6 100644 --- a/drivers/mmc/host/sdhci-of-esdhc.c +++ b/drivers/mmc/host/sdhci-of-esdhc.c @@ -502,6 +502,12 @@ static void esdhc_of_set_clock(struct sdhci_host *host, unsigned int clock) clock -= 5000000; } + /* Workaround to reduce the clock frequency for ls1021a esdhc */ + if (of_find_compatible_node(NULL, NULL, "fsl,ls1021a-esdhc")) { + if (clock == 50000000) + clock = 46500000; + } + temp = sdhci_readl(host, ESDHC_SYSTEM_CONTROL); temp &= ~(ESDHC_CLOCK_SDCLKEN | ESDHC_CLOCK_IPGEN | ESDHC_CLOCK_HCKEN | ESDHC_CLOCK_PEREN | ESDHC_CLOCK_MASK); @@ -591,10 +597,18 @@ static void esdhc_clock_enable(struct sdhci_host *host, bool enable) static void esdhc_reset(struct sdhci_host *host, u8 mask) { + u32 val; + sdhci_reset(host, mask); sdhci_writel(host, host->ier, SDHCI_INT_ENABLE); sdhci_writel(host, host->ier, SDHCI_SIGNAL_ENABLE); + + if (mask & SDHCI_RESET_ALL) { + val = sdhci_readl(host, ESDHC_TBCTL); + val &= ~ESDHC_TB_EN; + sdhci_writel(host, val, ESDHC_TBCTL); + } } /* The SCFG, Supplemental Configuration Unit, provides SoC specific |