diff options
| -rw-r--r-- | drivers/mmc/host/renesas_sdhi_core.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/drivers/mmc/host/renesas_sdhi_core.c b/drivers/mmc/host/renesas_sdhi_core.c index 26da095f8ad5..6abcf7a3feb0 100644 --- a/drivers/mmc/host/renesas_sdhi_core.c +++ b/drivers/mmc/host/renesas_sdhi_core.c @@ -32,6 +32,7 @@ #include <linux/pinctrl/consumer.h> #include <linux/pinctrl/pinctrl-state.h> #include <linux/regulator/consumer.h> +#include <linux/sys_soc.h> #include "renesas_sdhi.h" #include "tmio_mmc.h" @@ -45,6 +46,10 @@ #define SDHI_VER_GEN3_SD 0xcc10 #define SDHI_VER_GEN3_SDMMC 0xcd10 +struct renesas_sdhi_quirks { + bool hs400_4taps; +}; + static void renesas_sdhi_sdbuf_width(struct tmio_mmc_host *host, int width) { u32 val; @@ -597,11 +602,25 @@ static void renesas_sdhi_enable_dma(struct tmio_mmc_host *host, bool enable) renesas_sdhi_sdbuf_width(host, enable ? width : 16); } +static const struct renesas_sdhi_quirks sdhi_quirks_4tap = { + .hs400_4taps = true, +}; + +static const struct soc_device_attribute sdhi_quirks_match[] = { + { .soc_id = "r8a7795", .revision = "ES1.*", .data = &sdhi_quirks_4tap }, + { .soc_id = "r8a7795", .revision = "ES2.0", .data = &sdhi_quirks_4tap }, + { .soc_id = "r8a7796", .revision = "ES1.0", .data = &sdhi_quirks_4tap }, + { .soc_id = "r8a7796", .revision = "ES1.1", .data = &sdhi_quirks_4tap }, + { /* Sentinel. */ }, +}; + int renesas_sdhi_probe(struct platform_device *pdev, const struct tmio_mmc_dma_ops *dma_ops) { struct tmio_mmc_data *mmd = pdev->dev.platform_data; + const struct renesas_sdhi_quirks *quirks = NULL; const struct renesas_sdhi_of_data *of_data; + const struct soc_device_attribute *attr; struct tmio_mmc_data *mmc_data; struct tmio_mmc_dma *dma_priv; struct tmio_mmc_host *host; @@ -611,6 +630,10 @@ int renesas_sdhi_probe(struct platform_device *pdev, of_data = of_device_get_match_data(&pdev->dev); + attr = soc_device_match(sdhi_quirks_match); + if (attr) + quirks = attr->data; + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (!res) return -EINVAL; @@ -676,6 +699,9 @@ int renesas_sdhi_probe(struct platform_device *pdev, host->multi_io_quirk = renesas_sdhi_multi_io_quirk; host->dma_ops = dma_ops; + if (quirks && quirks->hs400_4taps) + mmc_data->flags |= TMIO_MMC_HAVE_4TAP_HS400; + /* For some SoC, we disable internal WP. GPIO may override this */ if (mmc_can_gpio_ro(host->mmc)) mmc_data->capabilities2 &= ~MMC_CAP2_NO_WRITE_PROTECT; |