[PATCH AUTOSEL 4.14 068/186] arm64: dts: qcom: msm8996: Disable USB2 PHY suspend by core

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



From: Manu Gautam <mgautam@xxxxxxxxxxxxxx>

[ Upstream commit d026c96b25b7ce5df89526aad2df988d553edb4d ]

QUSB2 PHY on msm8996 doesn't work well when autosuspend by
dwc3 core using USB2PHYCFG register is enabled. One of the
issue seen is that PHY driver reports PLL lock failure and
fails phy_init() if dwc3 core has USB2 PHY suspend enabled.
Fix this by using quirks to disable USB2 PHY LPM/suspend and
dwc3 core already takes care of explicitly suspending PHY
during suspend if quirks are specified.

Signed-off-by: Manu Gautam <mgautam@xxxxxxxxxxxxxx>
Signed-off-by: Paolo Pisati <p.pisati@xxxxxxxxx>
Link: https://lore.kernel.org/r/20191209151501.26993-1-p.pisati@xxxxxxxxx
Signed-off-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 arch/arm64/boot/dts/qcom/msm8996.dtsi | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/msm8996.dtsi b/arch/arm64/boot/dts/qcom/msm8996.dtsi
index 6f372ec055dd3..da2949586c7a3 100644
--- a/arch/arm64/boot/dts/qcom/msm8996.dtsi
+++ b/arch/arm64/boot/dts/qcom/msm8996.dtsi
@@ -788,6 +788,8 @@
 				interrupts = <0 138 0>;
 				phys = <&hsusb_phy2>;
 				phy-names = "usb2-phy";
+				snps,dis_u2_susphy_quirk;
+				snps,dis_enblslpm_quirk;
 			};
 		};
 
@@ -817,6 +819,8 @@
 				interrupts = <0 131 0>;
 				phys = <&hsusb_phy1>, <&ssusb_phy_0>;
 				phy-names = "usb2-phy", "usb3-phy";
+				snps,dis_u2_susphy_quirk;
+				snps,dis_enblslpm_quirk;
 			};
 		};
 	};
-- 
2.20.1




[Index of Archives]     [Device Tree Compilter]     [Device Tree Spec]     [Linux Driver Backports]     [Video for Linux]     [Linux USB Devel]     [Linux PCI Devel]     [Linux Audio Users]     [Linux Kernel]     [Linux SCSI]     [XFree86]     [Yosemite Backpacking]


  Powered by Linux