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realtek: rtl838x: drop GS1900 MDIO reset GPIO

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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: fd978c2e80 ("realtek: Enable Zyxel GS1900's RTL8231 reset line")
Signed-off-by: Sander Vanheule <sander@svanheule.net>
(cherry picked from commit cdbd9eb448a8fa802cbc2b2f8a1dec93b3999a3b)
(cherry picked from commit ffb3f31f08b4aec6144b5d7e7bd2c2ab1d68f55a)
This commit is contained in:
Sander Vanheule 2026-02-21 14:44:23 +01:00 committed by ahmed sassi
parent 64895f01d5
commit f52f805045
2 changed files with 0 additions and 8 deletions
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4
target/linux/realtek/dts/rtl8380_zyxel_gs1900_gpio.dtsi
View File

@ -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@0 {
compatible = "realtek,rtl8231";
reg = <0x0>;

4
target/linux/realtek/dts/rtl8380_zyxel_gs1900_gpio_emulated.dtsi
View File

@ -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@0 {
compatible = "realtek,rtl8231";
reg = <0x0>;