From 0fc87887dcb3a8c2651db8aa07cc8aecc40fc4b8 Mon Sep 17 00:00:00 2001 From: Ben Chuang Date: Fri, 25 Oct 2024 14:00:17 +0800 Subject: [PATCH] mmc: sdhci-pci-gli: GL9767: Fix low power mode in the SD Express process commit c4dedaaeb3f78d3718e9c1b1e4d972a6b99073cd upstream. 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: 0e92aec2efa0 ("mmc: sdhci-pci-gli: Add support SD Express card for GL9767") Signed-off-by: Ben Chuang Cc: stable@vger.kernel.org Message-ID: <20241025060017.1663697-2-benchuanggli@gmail.com> Signed-off-by: Ulf Hansson Signed-off-by: Greg Kroah-Hartman --- drivers/mmc/host/sdhci-pci-gli.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/mmc/host/sdhci-pci-gli.c b/drivers/mmc/host/sdhci-pci-gli.c index 4c89ecd22ea1..11c404374d79 100644 --- a/drivers/mmc/host/sdhci-pci-gli.c +++ b/drivers/mmc/host/sdhci-pci-gli.c @@ -1078,6 +1078,9 @@ 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; -- 2.34.1