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

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BugLink: https://bugs.launchpad.net/bugs/2099996

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: 0e92aec2ef ("mmc: sdhci-pci-gli: Add support SD Express card for GL9767")
Signed-off-by: Ben Chuang <ben.chuang@genesyslogic.com.tw>
Cc: stable@vger.kernel.org
Message-ID: <20241025060017.1663697-2-benchuanggli@gmail.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Koichiro Den <koichiro.den@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
This commit is contained in:
Ben Chuang
2025-02-25 22:59:22 +09:00
committed by Stefan Bader
parent aada2bd124
commit 2bb70a3789
1 changed files with 3 additions and 0 deletions
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drivers/mmc/host/sdhci-pci-gli.c
+3
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@@ -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;