diff mbox series

[RFC,3/4] usb: xhci: Set quirk for XHCI_CONSOLIDATE_TRBS

Message ID a391fb1bab2ac3abea664d11570ff3feefb4c934.1576848504.git.joglekar@synopsys.com (mailing list archive)
State New, archived
Headers show
Series Add logic to consolidate TRBs for Synopsys xHC | expand

Commit Message

Tejas Joglekar Dec. 20, 2019, 1:40 p.m. UTC 
This commit enables the quirk when the consolidate_trbs property is set
for the Synopsys xHC. TRB cache errata fixes the SNPS xHC hang issue
when the data is scattered across small buffers which does not make
atleast MPS size for given TRB cache size of SNPS xHC.

Signed-off-by: Tejas Joglekar <joglekar@synopsys.com>
---
 drivers/usb/host/xhci-pci.c  | 3 +++
 drivers/usb/host/xhci-plat.c | 3 +++
 2 files changed, 6 insertions(+)
diff mbox series

Patch

diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
index 2907fe4d78dd..74f82e67499a 100644
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -260,6 +260,9 @@  static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci)
 	     pdev->device == 0x9026)
 		xhci->quirks |= XHCI_RESET_PLL_ON_DISCONNECT;
 
+	if (pdev->vendor == PCI_VENDOR_ID_SYNOPSYS)
+		xhci->quirks |= XHCI_CONSOLIDATE_TRBS;
+
 	if (xhci->quirks & XHCI_RESET_ON_RESUME)
 		xhci_dbg_trace(xhci, trace_xhci_dbg_quirks,
 				"QUIRK: Resetting on resume");
diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c
index d90cd5ec09cf..a6f0e7e3d660 100644
--- a/drivers/usb/host/xhci-plat.c
+++ b/drivers/usb/host/xhci-plat.c
@@ -289,6 +289,9 @@  static int xhci_plat_probe(struct platform_device *pdev)
 		if (device_property_read_bool(tmpdev, "quirk-broken-port-ped"))
 			xhci->quirks |= XHCI_BROKEN_PORT_PED;
 
+		if (device_property_read_bool(tmpdev, "consolidate-trbs"))
+			xhci->quirks |= XHCI_CONSOLIDATE_TRBS;
+
 		device_property_read_u32(tmpdev, "imod-interval-ns",
 					 &xhci->imod_interval);
 	}