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mmc: sdhci-pci-gli: Disable slow mode in HS400 mode for GL9763E 

The GL9763E uses 150Mhz (slow mode) by default in HS400 mode. In order
to make HS400 mode run at 200Mhz, the slow mode needs to be turned off.

Signed-off-by: Ben Chuang <ben.chuang@genesyslogic.com.tw>
Link: https://lore.kernel.org/r/20201125110145.2824-1-benchuanggli@gmail.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Ben Chuang 2020-11-25 19:01:45 +08:00 committed by Ulf Hansson
parent cb80a7e917
commit 98991b1853
1 changed files with 7 additions and 0 deletions
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7
drivers/mmc/host/sdhci-pci-gli.c
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@ -87,6 +87,9 @@
#define PCIE_GLI_9763E_SCR 0x8E0
#define GLI_9763E_SCR_AXI_REQ BIT(9)
#define PCIE_GLI_9763E_MMC_CTRL 0x960
#define GLI_9763E_HS400_SLOW BIT(3)
#define SDHCI_GLI_9763E_CQE_BASE_ADDR 0x200
#define GLI_9763E_CQE_TRNS_MODE (SDHCI_TRNS_MULTI | \
SDHCI_TRNS_BLK_CNT_EN | \
@ -784,6 +787,10 @@ static void gli_set_gl9763e(struct sdhci_pci_slot *slot)
value |= GLI_9763E_SCR_AXI_REQ;
pci_write_config_dword(pdev, PCIE_GLI_9763E_SCR, value);
pci_read_config_dword(pdev, PCIE_GLI_9763E_MMC_CTRL, &value);
value &= ~GLI_9763E_HS400_SLOW;
pci_write_config_dword(pdev, PCIE_GLI_9763E_MMC_CTRL, value);
pci_read_config_dword(pdev, PCIE_GLI_9763E_VHS, &value);
value &= ~GLI_9763E_VHS_REV;
value |= FIELD_PREP(GLI_9763E_VHS_REV, GLI_9763E_VHS_REV_R);