From: Chad Monroe <chad@monroe.io>
Date: Tue, 11 Aug 2026 03:01:34 +0000 (-0700)
Subject: mediatek: filogic: mt-stuart: limit USB to USB2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c5ff6007b344fe4ead6bcfc492282d097927cd0f;p=thirdparty%2Fopenwrt.git

mediatek: filogic: mt-stuart: limit USB to USB2

USB3 SuperSpeed signaling interferes with the 6 GHz radio. Disable
the SuperSpeed port on ssusb1 with mediatek,u3p-dis-msk; the port
then runs at USB2 speed.

Stop enabling ssusb0 and its xs-phy. Nothing connects to them on
these boards.

Signed-off-by: Chad Monroe <chad@monroe.io>
Link: https://github.com/openwrt/openwrt/pull/24352
Signed-off-by: Jonas Jelonek <jelonek.jonas@gmail.com>
---

diff --git a/target/linux/mediatek/dts/mt7988a-smartrg-mt-stuart-phase1.dtsi b/target/linux/mediatek/dts/mt7988a-smartrg-mt-stuart-phase1.dtsi
index a6d31586fde..5ffdbf3ac84 100644
--- a/target/linux/mediatek/dts/mt7988a-smartrg-mt-stuart-phase1.dtsi
+++ b/target/linux/mediatek/dts/mt7988a-smartrg-mt-stuart-phase1.dtsi
@@ -246,11 +246,8 @@
 	status = "okay";
 };
 
-&ssusb0 {
-	status = "okay";
-};
-
 &ssusb1 {
+	mediatek,u3p-dis-msk = <0x1>;
 	status = "okay";
 };
 
@@ -273,7 +270,3 @@
 
 	/* DA14531MOD Bluetooth */
 };
-
-&xsphy {
-	status = "okay";
-};