[PATCH] ARM: sun8i: r40/a40i: rm unneeded PH23 setup which resets Banana Pi M2 Ultra V1.1

Hermann.Lauer at uni-heidelberg.de Hermann.Lauer at uni-heidelberg.de
Fri Dec 6 12:20:05 PST 2024


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 at uni-heidelberg.de>
---

# HG changeset patch
# Parent  236ffa4558b03bbc654515fae80a7a2387f06cd4

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
@@ -347,7 +347,5 @@
 };
 
 &usbphy {
-	usb1_vbus-supply = <&reg_vcc5v0>;
-	usb2_vbus-supply = <&reg_vcc5v0>;
 	status = "okay";
 };



More information about the linux-arm-kernel mailing list