From: Klaus Rubenstein <klaus.rubenstein@gmail.com>
Date: Wed, 1 Apr 2026 07:57:18 +0000 (+0200)
Subject: realtek: gs1900-48: add RTL8231 resets
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=4f637a09b8e35fe68667c2bb21868eb04c906ff4;p=thirdparty%2Fopenwrt.git

realtek: gs1900-48: add RTL8231 resets

Add reset-gpios for both RTL8231 expanders and hog the PHY reset
line on expander@3.

Signed-off-by: Klaus Rubenstein <klaus.rubenstein@gmail.com>
Tested-by: Sander Vanheule <sander@svanheule.net>
Signed-off-by: Sander Vanheule <sander@svanheule.net>
---

diff --git a/target/linux/realtek/dts/rtl8393_zyxel_gs1900-48.dtsi b/target/linux/realtek/dts/rtl8393_zyxel_gs1900-48.dtsi
index edbba5a4088..bd19062b54a 100644
--- a/target/linux/realtek/dts/rtl8393_zyxel_gs1900-48.dtsi
+++ b/target/linux/realtek/dts/rtl8393_zyxel_gs1900-48.dtsi
@@ -98,6 +98,7 @@
 	port_leds: expander@0 {
 		compatible = "realtek,rtl8231";
 		reg = <0>;
+		reset-gpios = <&gpio1 8 GPIO_ACTIVE_LOW>;
 
 		gpio-controller;
 		#gpio-cells = <2>;
@@ -179,6 +180,7 @@
 	gpio1: expander@3 {
 		compatible = "realtek,rtl8231";
 		reg = <3>;
+		reset-gpios = <&gpio0 1 GPIO_ACTIVE_LOW>;
 
 		gpio-controller;
 		#gpio-cells = <2>;
@@ -188,6 +190,14 @@
 			compatible = "realtek,rtl8231-leds";
 			status = "disabled";
 		};
+
+		/* PHY reset (active low), no driver support, keep deasserted */
+		phy-reset {
+			gpio-hog;
+			gpios = <6 GPIO_ACTIVE_LOW>;
+			output-low;
+			line-name = "phy-reset";
+		};
 	};
 };