From: he.he <he.he@amlogic.com>
Date: Thu, 29 Aug 2019 11:09:28 +0000 (-0400)
Subject: usb: xHCI host not responding to stop endpoint command [1/1]
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=2512e5715af248c9b2c641c57dc27f5d4c8c10b5;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

usb: xHCI host not responding to stop endpoint command [1/1]

PD#SWPL-14053

Problem:
Read and write simultaneously on two disks on a hub,
and then the XHCI controller would halted.

Solution:
Set the GUCTL1 BIT 17 to 1 for disable park mode.

Verify:
test pass on u200, ODROID-N2

Change-Id: I007804fa6b97a103da4a05be12c1193b9dd422cb
Signed-off-by: he.he <he.he@amlogic.com>
---

diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index 3e7b6782c964..f5c8c7f9c795 100644
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -778,6 +778,7 @@ static int dwc3_core_init(struct dwc3 *dwc)
 #ifdef CONFIG_AMLOGIC_USB
 	reg = dwc3_readl(dwc->regs, DWC3_GUCTL1);
 	reg |= DWC3_GUCTL_NAKPERENHHS;
+	reg |= DWC3_GUCTL_PARKMODEDISABLESS;
 	dwc3_writel(dwc->regs, DWC3_GUCTL1, reg);
 
 	reg = dwc3_readl(dwc->regs, DWC3_GUCTL);
diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h
index a231f4e3bd65..b7edb41ca8b3 100644
--- a/drivers/usb/dwc3/core.h
+++ b/drivers/usb/dwc3/core.h
@@ -160,6 +160,7 @@
 /* Global User Control Register */
 #define DWC3_GUCTL_USBHSTINAUTORETRYEN	(1 << 14)
 #define DWC3_GUCTL_NAKPERENHHS			(1 << 18)
+#define DWC3_GUCTL_PARKMODEDISABLESS	 BIT(17)
 #endif
 
 /* Global Debug Queue/FIFO Space Available Register */