diff options
| author | Xie Xiaobo <xiaobo.xie@nxp.com> | 2017-12-12 08:23:55 (GMT) |
|---|---|---|
| committer | Xie Xiaobo <xiaobo.xie@nxp.com> | 2017-12-12 08:23:55 (GMT) |
| commit | 708b8b8eb67124716c8579a9e259742b040d4dd3 (patch) | |
| tree | afc209d3f63c3d79e91a98c8f3ba01465977b574 /drivers/mmc | |
| parent | c0246a9ec4d461ef4dd7647f94005380bb9e7f0b (diff) | |
| parent | 5fe8cfe356d2dbf6f9d7e213614d6be9ad0ac592 (diff) | |
| download | linux-708b8b8eb67124716c8579a9e259742b040d4dd3.tar.xz | |
Merge branch 'linux-4.9-nxp' into linux-4.9 on Dec. 8, 2017
Signed-off-by: Xiaobo Xie <xiaobo.xie@nxp.com>
Diffstat (limited to 'drivers/mmc')
| -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 |