From 51b77a32980324601d0b2721bd9999d78e09d808 Mon Sep 17 00:00:00 2001 From: Shiji Yang Date: Tue, 20 May 2025 07:50:56 +0800 Subject: [PATCH] ramips: dts: mt7621: add the missing XHCI power regulators The USB power regulators are essential for the Mediatek XHCI controller. If any of them is missing, the kernel will throw a warning. Add fixed voltage io/vbus regulators to workaround this issue. Fix the following warnings: [ 7.514572] xhci-mtk 1e1c0000.xhci: supply vbus not found, using dummy regulator [ 7.522375] xhci-mtk 1e1c0000.xhci: supply vusb33 not found, using dummy regulator Signed-off-by: Shiji Yang Link: https://github.com/openwrt/openwrt/pull/18886 Signed-off-by: Hauke Mehrtens --- target/linux/ramips/dts/mt7621.dtsi | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/target/linux/ramips/dts/mt7621.dtsi b/target/linux/ramips/dts/mt7621.dtsi index da992bada4f..711f84689fa 100644 --- a/target/linux/ramips/dts/mt7621.dtsi +++ b/target/linux/ramips/dts/mt7621.dtsi @@ -64,6 +64,22 @@ regulator-name = "mmc_power"; }; + reg_vbus: regulator-vbus { + compatible = "regulator-fixed"; + regulator-always-on; + regulator-max-microvolt = <5000000>; + regulator-min-microvolt = <5000000>; + regulator-name = "usb_power"; + }; + + reg_vusb33: regulator-vusb33 { + compatible = "regulator-fixed"; + regulator-always-on; + regulator-max-microvolt = <3300000>; + regulator-min-microvolt = <3300000>; + regulator-name = "usb_io"; + }; + palmbus: palmbus@1e000000 { compatible = "palmbus"; reg = <0x1e000000 0x100000>; @@ -395,6 +411,9 @@ interrupt-parent = <&gic>; interrupts = ; + vbus-supply = <®_vbus>; + vusb33-supply = <®_vusb33>; + /* * Port 1 of both hubs is one usb slot and referenced here. * The binding doesn't allow to address individual hubs. -- 2.47.2