From 1ea11e8138767a262e576d5b08bb1509fed62dd9 Mon Sep 17 00:00:00 2001 From: Michal Simek Date: Mon, 10 Jul 2023 14:37:36 +0200 Subject: [PATCH] arm64: zynqmp: Fix usb reset over bootmode pins on zcu100 The commit a4180c369607 ("arm64: zynqmp: Add mode-pin GPIO controller DT node") added usb phy reset over bootmode pins by default on usb0 only. zcu100 is using usb0 as peripheral and usb1 as host. Unfortunately reset line is shared for both usb ulpi phys but usb_rst_b is connected to usb5744 hub which is used only in host mode. Especially this chip requires reset to operate properly that's why better assign gpio reset to usb1 instead of usb0. Without this change usb start crashed when runs. Signed-off-by: Michal Simek Link: https://lore.kernel.org/r/1ca80ec5bf7a595c03822f3e4e3683298205067a.1688992653.git.michal.simek@amd.com --- arch/arm/dts/zynqmp-zcu100-revC.dts | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm/dts/zynqmp-zcu100-revC.dts b/arch/arm/dts/zynqmp-zcu100-revC.dts index 78c3250760..a84cd86694 100644 --- a/arch/arm/dts/zynqmp-zcu100-revC.dts +++ b/arch/arm/dts/zynqmp-zcu100-revC.dts @@ -569,6 +569,7 @@ pinctrl-0 = <&pinctrl_usb0_default>; phy-names = "usb3-phy"; phys = <&psgtr 2 PHY_TYPE_USB3 0 0>; + /delete-property/ reset-gpios; }; &dwc3_0 { @@ -584,6 +585,7 @@ pinctrl-0 = <&pinctrl_usb1_default>; phy-names = "usb3-phy"; phys = <&psgtr 3 PHY_TYPE_USB3 1 0>; + reset-gpios = <&modepin_gpio 1 GPIO_ACTIVE_LOW>; }; &dwc3_1 { -- 2.39.5