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mmc: rtsx_pci_sdmmc: increase power-on settling delay to 5ms

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The existing 1ms delay in sd_power_on is insufficient and causes resume
errors around 4% of the time.

Increasing the delay to 5ms resolves this issue after testing 300
s2idle cycles.

Fixes: 1f311c94aa ("mmc: rtsx: add 74 Clocks in power on flow")
Signed-off-by: Matthew Schwartz <matthew.schwartz@linux.dev>
Link: https://patch.msgid.link/20260105060236.400366-3-matthew.schwartz@linux.dev
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Matthew Schwartz
2026-01-04 22:02:36 -08:00
committed by Greg Kroah-Hartman
parent eac85fbd08
commit aced969e9b
1 changed files with 1 additions and 1 deletions
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2
drivers/mmc/host/rtsx_pci_sdmmc.c
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@@ -947,7 +947,7 @@ static int sd_power_on(struct realtek_pci_sdmmc *host, unsigned char power_mode)
if (err < 0)
return err;
mdelay(1);
mdelay(5);
err = rtsx_pci_write_register(pcr, CARD_OE, SD_OUTPUT_EN, SD_OUTPUT_EN);
if (err < 0)