usb: dwc3: add delay p1p2p3 quirk
This patch adds delay P0 to P1/P2/P3 quirk for U2/U2/U3, and some special
platforms can configure that if it is needed.
[ balbi@ti.com : added DeviceTree binding documentation ]
Signed-off-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index 600d3bc..c076514 100644
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -380,6 +380,9 @@
if (dwc->req_p1p2p3_quirk)
reg |= DWC3_GUSB3PIPECTL_REQP1P2P3;
+ if (dwc->del_p1p2p3_quirk)
+ reg |= DWC3_GUSB3PIPECTL_DEP1P2P3_EN;
+
dwc3_writel(dwc->regs, DWC3_GUSB3PIPECTL(0), reg);
mdelay(100);
@@ -761,6 +764,8 @@
"snps,u2ss_inp3_quirk");
dwc->req_p1p2p3_quirk = of_property_read_bool(node,
"snps,req_p1p2p3_quirk");
+ dwc->del_p1p2p3_quirk = of_property_read_bool(node,
+ "snps,del_p1p2p3_quirk");
} else if (pdata) {
dwc->maximum_speed = pdata->maximum_speed;
dwc->has_lpm_erratum = pdata->has_lpm_erratum;
@@ -774,6 +779,7 @@
dwc->u2exit_lfps_quirk = pdata->u2exit_lfps_quirk;
dwc->u2ss_inp3_quirk = pdata->u2ss_inp3_quirk;
dwc->req_p1p2p3_quirk = pdata->req_p1p2p3_quirk;
+ dwc->del_p1p2p3_quirk = pdata->del_p1p2p3_quirk;
}
/* default to superspeed if no maximum_speed passed */