mmc: sdhci-pci-gli: Disable slow mode in HS400 mode for GL9763E (98991b18) · Commits · 戴 / test

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>

drivers/mmc/host/sdhci-pci-gli.c

+7 −0

Original line number	Diff line number	Diff line
		@@ -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);

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