diff options
| author | Matthew Schwartz <matthew.schwartz@linux.dev> | 2026-01-03 12:42:26 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2026-01-16 16:36:32 +0100 |
| commit | 5f0bf80cc5e04d31eeb201683e0b477c24bd18e7 (patch) | |
| tree | 9b082cade4b560530e1bf7fbe02531df8def4bae /drivers/misc | |
| parent | ed1613fc18834b5ec38d3534e96e4bc990289aa2 (diff) | |
mmc: rtsx_pci: add quirk to disable MMC_CAP_AGGRESSIVE_PM for RTS525A
Using MMC_CAP_AGGRESSIVE_PM on RTS525A card readers causes game
performance issues when the card reader comes back from idle into active
use. This can be observed in Hades II when loading new sections of the
game or menu after the card reader puts itself into idle, and presents
as a 1-2 second hang.
Add EXTRA_CAPS_NO_AGGRESSIVE_PM quirk to allow cardreader drivers to
opt-out of aggressive PM, and set it for RTS525A.
Closes: https://lore.kernel.org/linux-mmc/ff9a7c20-f465-4afa-bf29-708d4a52974a@linux.dev/
Signed-off-by: Matthew Schwartz <matthew.schwartz@linux.dev>
Link: https://patch.msgid.link/20260103204226.71752-1-matthew.schwartz@linux.dev
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/misc')
| -rw-r--r-- | drivers/misc/cardreader/rts5249.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/misc/cardreader/rts5249.c b/drivers/misc/cardreader/rts5249.c index 38aefd8db452..87d576a03e68 100644 --- a/drivers/misc/cardreader/rts5249.c +++ b/drivers/misc/cardreader/rts5249.c @@ -78,6 +78,9 @@ static void rtsx_base_fetch_vendor_settings(struct rtsx_pcr *pcr) if (CHK_PCI_PID(pcr, PID_524A) || CHK_PCI_PID(pcr, PID_525A)) pcr->rtd3_en = rtsx_reg_to_rtd3_uhsii(reg); + if (CHK_PCI_PID(pcr, PID_525A)) + pcr->extra_caps |= EXTRA_CAPS_NO_AGGRESSIVE_PM; + if (rtsx_check_mmc_support(reg)) pcr->extra_caps |= EXTRA_CAPS_NO_MMC; pcr->sd30_drive_sel_3v3 = rtsx_reg_to_sd30_drive_sel_3v3(reg); |