linux-kernel - [PATCH v2] ARM: dts: sun8i-r40: remove unused GPIO regulator

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <20241213195433.GA1568@lemon.iwr.uni-heidelberg.de>
Date: Fri, 13 Dec 2024 20:54:33 +0100
From: Hermann.Lauer@...-heidelberg.de
To: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>, Chen-Yu Tsai <wens@...e.org>,
	Jernej Skrabec <jernej.skrabec@...il.com>,
	Samuel Holland <samuel@...lland.org>
Cc: devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-sunxi@...ts.linux.dev, linux-kernel@...r.kernel.org
Subject: [PATCH v2] ARM: dts: sun8i-r40: remove unused GPIO regulator

Subject: [PATCH v2] ARM: dts: sun8i-r40: remove unused GPIO regulator

Banana Pi M2 Ultra V1.1 board resets immediately when the usb core tries
to setup PH23 GPIO. It turned out that the V1.0 board USB-A ports are
always power supplied and according to the board scheme PH23 is simply
not connected.

So remove the PH23 setup: Doesn't harm V1.0 (with R40) and let V1.1
(with A40i) start.

Signed-off-by: Hermann Lauer <Hermann.Lauer@...-heidelberg.de>
---
V2: shorten subject, rm dangerous PH23 regulator completely

diff --git a/arch/arm/boot/dts/allwinner/sun8i-r40-bananapi-m2-ultra.dts b/arch/arm/boot/dts/allwinner/sun8i-r40-bananapi-m2-ultra.dts
--- a/arch/arm/boot/dts/allwinner/sun8i-r40-bananapi-m2-ultra.dts
+++ b/arch/arm/boot/dts/allwinner/sun8i-r40-bananapi-m2-ultra.dts
@@ -91,15 +91,6 @@
 		};
 	};
 
-	reg_vcc5v0: vcc5v0 {
-		compatible = "regulator-fixed";
-		regulator-name = "vcc5v0";
-		regulator-min-microvolt = <5000000>;
-		regulator-max-microvolt = <5000000>;
-		gpio = <&pio 7 23 GPIO_ACTIVE_HIGH>; /* PH23 */
-		enable-active-high;
-	};
-
 	wifi_pwrseq: pwrseq {
 		compatible = "mmc-pwrseq-simple";
 		reset-gpios = <&pio 6 10 GPIO_ACTIVE_LOW>; /* PG10 WIFI_EN */
@@ -347,7 +338,5 @@
 };
 
 &usbphy {
-	usb1_vbus-supply = <&reg_vcc5v0>;
-	usb2_vbus-supply = <&reg_vcc5v0>;
 	status = "okay";
 };