Add a quirk XHCI_ZHAOXIN_HOST for zhaoxin xhci to fix issues,
there are two cases will be used.
- add u1/u2 support.
- fix xHCI root hub speed show issue in zhaoxin platform.
Add a quirk XHCI_ZHAOXIN_TRB_FETCH to fix TRB prefetch issue.
On Zhaoxin ZX-100 project, xHCI can't work normally after resume
from system Sx state. To fix this issue, when resume from system
sx state, reinitialize xHCI instead of restore.
So, Add XHCI_RESET_ON_RESUME quirk for zx-100 to fix issue of
resuming from system sx state.
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Weitao Wang <WeitaoWang-oc@xxxxxxxxxxx>
---
v1->v2
- Add more quirks of xhci for zhaoxin.
drivers/usb/host/xhci-pci.c | 11 +++++++++++
drivers/usb/host/xhci.h | 2 ++
2 files changed, 13 insertions(+)
diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
index 6db07ca419c3..53b7d8a1ed0a 100644
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -334,6 +334,17 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci)
pdev->device == PCI_DEVICE_ID_AMD_PROMONTORYA_4))
xhci->quirks |= XHCI_NO_SOFT_RETRY;
+ if (pdev->vendor == PCI_VENDOR_ID_ZHAOXIN) {
+ xhci->quirks |= XHCI_LPM_SUPPORT;
+ xhci->quirks |= XHCI_ZHAOXIN_HOST;
+ if (pdev->device == 0x9202) {
+ xhci->quirks |= XHCI_RESET_ON_RESUME;
+ xhci->quirks |= XHCI_ZHAOXIN_TRB_FETCH;
+ }
+ if (pdev->device == 0x9203)
+ xhci->quirks |= XHCI_ZHAOXIN_TRB_FETCH;
+ }
+
/* xHC spec requires PCI devices to support D3hot and D3cold */
if (xhci->hci_version >= 0x120)
xhci->quirks |= XHCI_DEFAULT_PM_RUNTIME_ALLOW;
diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h
index 786002bb35db..8f8f0e91b0dc 100644
--- a/drivers/usb/host/xhci.h
+++ b/drivers/usb/host/xhci.h
@@ -1905,6 +1905,8 @@ struct xhci_hcd {
#define XHCI_EP_CTX_BROKEN_DCS BIT_ULL(42)
#define XHCI_SUSPEND_RESUME_CLKS BIT_ULL(43)
#define XHCI_RESET_TO_DEFAULT BIT_ULL(44)
+#define XHCI_ZHAOXIN_HOST BIT_ULL(45)
+#define XHCI_ZHAOXIN_TRB_FETCH BIT_ULL(46)
unsigned int num_active_eps;
unsigned int limit_active_eps;
--
2.32.0
