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[v2] xhci: Apply XHCI_RESET_TO_DEFAULT quirk to ADL-N

Message ID 20221031035114.1803570-1-rekanorman@chromium.org (mailing list archive)
State Accepted
Commit fed70b61ef2c0aed54456db3d485b215f6cc3209
Headers show
Series [v2] xhci: Apply XHCI_RESET_TO_DEFAULT quirk to ADL-N | expand

Commit Message

Reka Norman Oct. 31, 2022, 3:51 a.m. UTC 
ADL-N systems have the same issue as ADL-P, 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 ADL-N as well.

This patch depends on commit 34cd2db408d5 ("xhci: Add quirk to reset
host back to default state at shutdown").

The issue it fixes is a ~20s boot time delay when booting from S5. It
affects ADL-N devices, and ADL-N support was added starting from v5.16.

Signed-off-by: Reka Norman <rekanorman@chromium.org>
---

Changes in v2:
- Add more details to the commit message.

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

diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
index 7bccbe50bab15..f98cf30a3c1a5 100644
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -59,6 +59,7 @@ 
 #define PCI_DEVICE_ID_INTEL_TIGER_LAKE_XHCI		0x9a13
 #define PCI_DEVICE_ID_INTEL_MAPLE_RIDGE_XHCI		0x1138
 #define PCI_DEVICE_ID_INTEL_ALDER_LAKE_PCH_XHCI		0x51ed
+#define PCI_DEVICE_ID_INTEL_ALDER_LAKE_N_PCH_XHCI	0x54ed
 
 #define PCI_DEVICE_ID_AMD_RENOIR_XHCI			0x1639
 #define PCI_DEVICE_ID_AMD_PROMONTORYA_4			0x43b9
@@ -246,7 +247,8 @@  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_ALDER_LAKE_PCH_XHCI ||
+	     pdev->device == PCI_DEVICE_ID_INTEL_ALDER_LAKE_N_PCH_XHCI))
 		xhci->quirks |= XHCI_RESET_TO_DEFAULT;
 
 	if (pdev->vendor == PCI_VENDOR_ID_INTEL &&