Commit 15f908fa authored by Renius Chen's avatar Renius Chen Committed by Ulf Hansson
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mmc: sdhci-pci-gli: Add a switch to enable/disable CQHCI support 



Add a vendor-specific bit named GLI_9763E_MB_ERP_ON at the bit7 of
register 888h to decide whether to enhance random R/W performance
of GL9763E. CQHCI support will be enabled if and only if the bit is
set and the GLI_9763E_MB_CMQ_OFF bit is not set.

Signed-off-by: default avatarRenius Chen <reniuschengl@gmail.com>
Link: https://lore.kernel.org/r/20210106085332.5494-1-reniuschengl@gmail.com


Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
parent 8b280564

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

+3 −1
Original line number Diff line number Diff line
@@ -84,6 +84,7 @@ 
#define   GLI_9763E_VHS_REV_W      0x2

#define PCIE_GLI_9763E_MB	 0x888

#define   GLI_9763E_MB_CMDQ_OFF	   BIT(19)

#define   GLI_9763E_MB_ERP_ON      BIT(7)

#define PCIE_GLI_9763E_SCR	 0x8E0

#define   GLI_9763E_SCR_AXI_REQ	   BIT(9)
@@ -814,6 +815,7 @@ static int gli_probe_slot_gl9763e(struct sdhci_pci_slot *slot) 


	pci_read_config_dword(pdev, PCIE_GLI_9763E_MB, &value);

	if (!(value & GLI_9763E_MB_CMDQ_OFF))

		if (value & GLI_9763E_MB_ERP_ON)

			host->mmc->caps2 |= MMC_CAP2_CQE | MMC_CAP2_CQE_DCMD;



	gli_pcie_enable_msi(slot);