From f25c33724d1512a72554c0ad4cb70b43ba15374e Mon Sep 17 00:00:00 2001 From: Maurice Petallo Date: Tue, 8 Jul 2014 19:11:01 +0800 Subject: [PATCH] mmc: sdhci: add DDR50 1.8V mode support for BayTrail eMMC Controller This is to enable DDR50 bus speed mode with 1.8V signaling capability for BayTrail ACPI and PCI mode eMMC Controller. Signed-off-by: Maurice Petallo Acked-by: Adrian Hunter Signed-off-by: Ulf Hansson --- drivers/mmc/host/sdhci-acpi.c | 3 ++- drivers/mmc/host/sdhci-pci.c | 2 +- 2 files changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/mmc/host/sdhci-acpi.c b/drivers/mmc/host/sdhci-acpi.c index 840788e..8c53370 100644 --- a/drivers/mmc/host/sdhci-acpi.c +++ b/drivers/mmc/host/sdhci-acpi.c @@ -124,7 +124,8 @@ static const struct sdhci_acpi_chip sdhci_acpi_chip_int = { static const struct sdhci_acpi_slot sdhci_acpi_slot_int_emmc = { .chip = &sdhci_acpi_chip_int, - .caps = MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE | MMC_CAP_HW_RESET, + .caps = MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE | + MMC_CAP_HW_RESET | MMC_CAP_1_8V_DDR, .caps2 = MMC_CAP2_HC_ERASE_SZ, .flags = SDHCI_ACPI_RUNTIME_PM, .quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN, diff --git a/drivers/mmc/host/sdhci-pci.c b/drivers/mmc/host/sdhci-pci.c index dc336ee..42f4633 100644 --- a/drivers/mmc/host/sdhci-pci.c +++ b/drivers/mmc/host/sdhci-pci.c @@ -268,7 +268,7 @@ static void sdhci_pci_int_hw_reset(struct sdhci_host *host) static int byt_emmc_probe_slot(struct sdhci_pci_slot *slot) { slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE | - MMC_CAP_HW_RESET; + MMC_CAP_HW_RESET | MMC_CAP_1_8V_DDR; slot->host->mmc->caps2 |= MMC_CAP2_HC_ERASE_SZ; slot->hw_reset = sdhci_pci_int_hw_reset; return 0; -- 2.7.4