diff options
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/host/sdhci-esdhc.h | 4 | ||||
| -rw-r--r-- | drivers/mmc/host/sdhci-of-esdhc.c | 19 |
2 files changed, 23 insertions, 0 deletions
diff --git a/drivers/mmc/host/sdhci-esdhc.h b/drivers/mmc/host/sdhci-esdhc.h index 721a635b10e7..39dbbd6eaf28 100644 --- a/drivers/mmc/host/sdhci-esdhc.h +++ b/drivers/mmc/host/sdhci-esdhc.h @@ -78,6 +78,10 @@ #define ESDHC_DLL_ENABLE 0x80000000 #define ESDHC_DLL_FREQ_SEL 0x08000000 +/* DLL Config 1 Register */ +#define ESDHC_DLLCFG1 0x164 +#define ESDHC_DLL_PD_PULSE_STRETCH_SEL 0x80000000 + /* DLL Status 0 Register */ #define ESDHC_DLLSTAT0 0x170 #define ESDHC_DLL_STS_SLV_LOCK 0x08000000 diff --git a/drivers/mmc/host/sdhci-of-esdhc.c b/drivers/mmc/host/sdhci-of-esdhc.c index b93a4556ac8c..856e809f38b7 100644 --- a/drivers/mmc/host/sdhci-of-esdhc.c +++ b/drivers/mmc/host/sdhci-of-esdhc.c @@ -79,6 +79,7 @@ struct sdhci_esdhc { u8 spec_ver; bool quirk_incorrect_hostver; bool quirk_limited_clk_division; + bool quirk_unreliable_pulse_detection; bool quirk_fixup_tuning; unsigned int peripheral_clock; const struct esdhc_clk_fixup *clk_fixup; @@ -676,6 +677,8 @@ static void esdhc_pltfm_set_bus_width(struct sdhci_host *host, int width) static void esdhc_reset(struct sdhci_host *host, u8 mask) { + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); + struct sdhci_esdhc *esdhc = sdhci_pltfm_priv(pltfm_host); u32 val; sdhci_reset(host, mask); @@ -687,6 +690,12 @@ static void esdhc_reset(struct sdhci_host *host, u8 mask) val = sdhci_readl(host, ESDHC_TBCTL); val &= ~ESDHC_TB_EN; sdhci_writel(host, val, ESDHC_TBCTL); + + if (esdhc->quirk_unreliable_pulse_detection) { + val = sdhci_readl(host, ESDHC_DLLCFG1); + val &= ~ESDHC_DLL_PD_PULSE_STRETCH_SEL; + sdhci_writel(host, val, ESDHC_DLLCFG1); + } } } @@ -941,6 +950,11 @@ static struct soc_device_attribute soc_fixup_sdhc_clkdivs[] = { { }, }; +static struct soc_device_attribute soc_unreliable_pulse_detection[] = { + { .family = "QorIQ LX2160A", .revision = "1.0", }, + { }, +}; + static void esdhc_init(struct platform_device *pdev, struct sdhci_host *host) { const struct of_device_id *match; @@ -968,6 +982,11 @@ static void esdhc_init(struct platform_device *pdev, struct sdhci_host *host) else esdhc->quirk_limited_clk_division = false; + if (soc_device_match(soc_unreliable_pulse_detection)) + esdhc->quirk_unreliable_pulse_detection = true; + else + esdhc->quirk_unreliable_pulse_detection = false; + match = of_match_node(sdhci_esdhc_of_match, pdev->dev.of_node); if (match) esdhc->clk_fixup = match->data; |