2024-06-14 00:29:39

by Reka Norman

[permalink] [raw]
Subject: [PATCH v2] xhci: Apply XHCI_RESET_TO_DEFAULT quirk to TGL

TGL systems have the same issue as ADL, where a large boot firmware
delay is seen if USB ports are left in U3 at shutdown. So apply the
XHCI_RESET_TO_DEFAULT quirk to TGL as well.

The issue it fixes is a ~20s boot time delay when booting from S5. It
affects TGL devices, and TGL support was added starting from v5.3.

Cc: [email protected]
Signed-off-by: Reka Norman <[email protected]>
---

Changes in v2:
- Add cc stable

drivers/usb/host/xhci-pci.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
index c040d816e626..137bd3da1128 100644
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -49,6 +49,7 @@
#define PCI_DEVICE_ID_INTEL_DENVERTON_XHCI 0x19d0
#define PCI_DEVICE_ID_INTEL_ICE_LAKE_XHCI 0x8a13
#define PCI_DEVICE_ID_INTEL_TIGER_LAKE_XHCI 0x9a13
+#define PCI_DEVICE_ID_INTEL_TIGER_LAKE_PCH_XHCI 0xa0ed
#define PCI_DEVICE_ID_INTEL_COMET_LAKE_XHCI 0xa3af
#define PCI_DEVICE_ID_INTEL_ALDER_LAKE_PCH_XHCI 0x51ed
#define PCI_DEVICE_ID_INTEL_ALDER_LAKE_N_PCH_XHCI 0x54ed
@@ -372,7 +373,8 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci)
xhci->quirks |= XHCI_MISSING_CAS;

if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
- (pdev->device == PCI_DEVICE_ID_INTEL_ALDER_LAKE_PCH_XHCI ||
+ (pdev->device == PCI_DEVICE_ID_INTEL_TIGER_LAKE_PCH_XHCI ||
+ pdev->device == PCI_DEVICE_ID_INTEL_ALDER_LAKE_PCH_XHCI ||
pdev->device == PCI_DEVICE_ID_INTEL_ALDER_LAKE_N_PCH_XHCI))
xhci->quirks |= XHCI_RESET_TO_DEFAULT;

--
2.45.2.627.g7a2c4fd464-goog