force xhci usb mode on steam deck to workaround firmware bug

this allows booting on steam deck with external usb devices, particularly important for the installer
ChimeraOS · Feb 13, 2024 · 21ad840 · 21ad840
1 parent 199dd50
commit 21ad840
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Showing 2 changed files with 3 additions and 6 deletions.
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
@@ -697,15 +697,15 @@ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI,	PCI_DEVICE_ID_ATI_RS100,   quirk_ati_
 /*
  * In the AMD NL platform, this device ([1022:7912]) has a class code of
  * PCI_CLASS_SERIAL_USB_XHCI (0x0c0330), which means the xhci driver will
- * claim it. The same applies on the VanGogh platform device ([1022:163a]).
+ * claim it.
  *
  * But the dwc3 driver is a more specific driver for this device, and we'd
  * prefer to use it instead of xhci. To prevent xhci from claiming the
  * device, change the class code to 0x0c03fe, which the PCI r3.0 spec
  * defines as "USB device (not host controller)". The dwc3 driver can then
  * claim it based on its Vendor and Device ID.
  */
-static void quirk_amd_dwc_class(struct pci_dev *pdev)
+static void quirk_amd_nl_class(struct pci_dev *pdev)
 {
 	u32 class = pdev->class;
 
@@ -718,9 +718,7 @@ static void quirk_amd_dwc_class(struct pci_dev *pdev)
 	}
 }
 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_NL_USB,
-		quirk_amd_dwc_class);
-DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_VANGOGH_USB,
-		quirk_amd_dwc_class);
+		quirk_amd_nl_class);
 
 /*
  * Synopsys USB 3.x host HAPS platform has a class code of

diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h
@@ -582,7 +582,6 @@
 #define PCI_DEVICE_ID_AMD_1AH_M20H_DF_F3 0x16fb
 #define PCI_DEVICE_ID_AMD_MI200_DF_F3	0x14d3
 #define PCI_DEVICE_ID_AMD_MI300_DF_F3	0x152b
-#define PCI_DEVICE_ID_AMD_VANGOGH_USB	0x163a
 #define PCI_DEVICE_ID_AMD_CNB17H_F3	0x1703
 #define PCI_DEVICE_ID_AMD_LANCE		0x2000
 #define PCI_DEVICE_ID_AMD_LANCE_HOME	0x2001