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From 0767542941c535ebb156087593426bb1fb25e967 Mon Sep 17 00:00:00 2001
From: Li Jun <jun.li@nxp.com>
Date: Tue, 28 Nov 2017 21:43:18 +0800
Subject: [PATCH] MLK-16604-1 usb: host: xhci-plat: add XHCI_MISSING_CAS quirk
i.MX8MQ USB3 host needs XHCI_MISSING_CAS quirk to warm reset the port to
enum the USB3 device plugged in while system sleep, as the port state is
stuck in polling mode after resume.
Signed-off-by: Li Jun <jun.li@nxp.com>
Acked-by: Peter Chen <peter.chen@nxp.com>
(cherry picked from commit 9f1f4316775a061d3ad46c63f84a377e2ffd015d)
---
drivers/usb/host/xhci-plat.c | 4 ++++
1 file changed, 4 insertions(+)
--- a/drivers/usb/host/xhci-plat.c
+++ b/drivers/usb/host/xhci-plat.c
@@ -303,6 +303,10 @@ static int xhci_plat_probe(struct platfo
device_property_read_u32(tmpdev, "imod-interval-ns",
&xhci->imod_interval);
+
+ if (device_property_read_bool(tmpdev,
+ "usb3-resume-missing-cas"))
+ xhci->quirks |= XHCI_MISSING_CAS;
}
hcd->usb_phy = devm_usb_get_phy_by_phandle(sysdev, "usb-phy", 0);
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