mmc: sdhci-pci-gli: GL9767: Fix low power mode in the SD Express process

When starting the SD Express process, the low power negotiation mode will be disabled, so we need to re-enable it after switching back to SD mode. Fixes: 0e92aec ("mmc: sdhci-pci-gli: Add support SD Express card for GL9767") Signed-off-by: Ben Chuang <[email protected]> Cc: [email protected] Message-ID: <[email protected]> Signed-off-by: Ulf Hansson <[email protected]>
kvm-riscv · Oct 28, 2024 · c4dedaa · c4dedaa
1 parent 8c68b56
commit c4dedaa
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/drivers/mmc/host/sdhci-pci-gli.c b/drivers/mmc/host/sdhci-pci-gli.c
@@ -1068,6 +1068,9 @@ static int gl9767_init_sd_express(struct mmc_host *mmc, struct mmc_ios *ios)
 		sdhci_writew(host, value, SDHCI_CLOCK_CONTROL);
 	}
 
+	pci_read_config_dword(pdev, PCIE_GLI_9767_CFG, &value);
+	value &= ~PCIE_GLI_9767_CFG_LOW_PWR_OFF;
+	pci_write_config_dword(pdev, PCIE_GLI_9767_CFG, value);
 	gl9767_vhs_read(pdev);
 
 	return 0;