[openwrt/openwrt] realtek: rtl838x: drop GS1900 MDIO reset GPIO

[LEDE Commits]

svanheule pushed a commit to openwrt/openwrt.git, branch openwrt-24.10:
https://git.openwrt.org/ffb3f31f08b4aec6144b5d7e7bd2c2ab1d68f55a

commit ffb3f31f08b4aec6144b5d7e7bd2c2ab1d68f55a
Author: Sander Vanheule <sander at svanheule.net>
AuthorDate: Sat Feb 21 14:44:23 2026 +0100

    realtek: rtl838x: drop GS1900 MDIO reset GPIO
    
    The reset line wired to the RTL8231 on the GS1900 series may also
    connect to other external ICs on the board. On the GS1900-24E, the
    reset line is wired (via buffers) to the board's RTL8231 expanders and
    the RTL8218 phys. As these external devices (phys) are on different
    busses, the reset line shouldn't be specified on one bus or the other.
    
    Drop the reset specification from the generic GPIO description, so it
    can be added back on a per-device basis after confirming the behavior.
    
    Link: https://github.com/openwrt/openwrt/issues/18620
    Fixes: fd978c2e80b4 ("realtek: Enable Zyxel GS1900's RTL8231 reset line")
    Signed-off-by: Sander Vanheule <sander at svanheule.net>
    (cherry picked from commit cdbd9eb448a8fa802cbc2b2f8a1dec93b3999a3b)
---
 target/linux/realtek/dts/rtl8380_zyxel_gs1900_gpio.dtsi          | 4 ----
 target/linux/realtek/dts/rtl8380_zyxel_gs1900_gpio_emulated.dtsi | 4 ----
 2 files changed, 8 deletions(-)

diff --git a/target/linux/realtek/dts/rtl8380_zyxel_gs1900_gpio.dtsi b/target/linux/realtek/dts/rtl8380_zyxel_gs1900_gpio.dtsi
index 93ec7e4a1e..a4733dfec0 100644
--- a/target/linux/realtek/dts/rtl8380_zyxel_gs1900_gpio.dtsi
+++ b/target/linux/realtek/dts/rtl8380_zyxel_gs1900_gpio.dtsi
@@ -5,10 +5,6 @@
 &mdio_aux {
 	status = "okay";
 
-	reset-gpios = <&gpio0 1 GPIO_ACTIVE_LOW>;
-	reset-delay-us = <1000>;
-	reset-post-delay-us = <10000>;
-
 	gpio1: expander at 0 {
 		compatible = "realtek,rtl8231";
 		reg = <0x0>;
diff --git a/target/linux/realtek/dts/rtl8380_zyxel_gs1900_gpio_emulated.dtsi b/target/linux/realtek/dts/rtl8380_zyxel_gs1900_gpio_emulated.dtsi
index 70969eb00c..f98e404a3b 100644
--- a/target/linux/realtek/dts/rtl8380_zyxel_gs1900_gpio_emulated.dtsi
+++ b/target/linux/realtek/dts/rtl8380_zyxel_gs1900_gpio_emulated.dtsi
@@ -5,10 +5,6 @@
 &mdio_gpio {
 	status = "okay";
 
-	reset-gpios = <&gpio0 1 GPIO_ACTIVE_LOW>;
-	reset-delay-us = <1000>;
-	reset-post-delay-us = <10000>;
-
 	gpio1: expander at 0 {
 		compatible = "realtek,rtl8231";
 		reg = <0x0>;