From 980648aa73f96718aa7ba088c6f8c641769d1fef Mon Sep 17 00:00:00 2001 From: Kaustabh Chakraborty Date: Thu, 26 Jun 2025 13:02:56 +0530 Subject: [PATCH] arm64: dts: exynos7870: add quirk to disable USB2 LPM in gadget mode commit e9355e894aebcbeacffd284644749190cc5f33a4 upstream. In gadget mode, USB connections are sluggish. The device won't send packets to the host unless the host sends packets to the device. For instance, SSH-ing through the USB network would apparently not work unless you're flood-pinging the device's IP. Add the property snps,usb2-gadget-lpm-disable to the dwc3 node, which seems to solve this issue. Fixes: d6f3a7f91fdb ("arm64: dts: exynos: add initial devicetree support for exynos7870") Cc: stable@vger.kernel.org # v6.16 Signed-off-by: Kaustabh Chakraborty Link: https://lore.kernel.org/r/20250626-exynos7870-dts-fixes-v1-1-349987874d9a@disroot.org Signed-off-by: Krzysztof Kozlowski Signed-off-by: Greg Kroah-Hartman --- arch/arm64/boot/dts/exynos/exynos7870.dtsi | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm64/boot/dts/exynos/exynos7870.dtsi b/arch/arm64/boot/dts/exynos/exynos7870.dtsi index 5cba8c9bb4034..d5d347623b903 100644 --- a/arch/arm64/boot/dts/exynos/exynos7870.dtsi +++ b/arch/arm64/boot/dts/exynos/exynos7870.dtsi @@ -327,6 +327,7 @@ phys = <&usbdrd_phy 0>; usb-role-switch; + snps,usb2-gadget-lpm-disable; }; }; -- 2.47.3