realtek: add PoE enable line to Netgear GS310TP

By switching to the new RTL8231 driver in commit b7af54d5c18c ("realtek:
Simple conversions to RTL8231 MFD driver"), the bootloader state of the
RTL8231's pins is now maintained. As the bootloader de-asserts the PoE
enable signal, this means PoE output is no longer available.

Add a gpio-hog with high output, restoring the line value from when the
pin was configured (by default) as an input with a pull-up resistor.
This will hard-enable the PoE output, but the individual ports can still
be administratively disabled by realtek-poe or a similar tool.

Signed-off-by: Sander Vanheule <sander@svanheule.net>

diff --git a/target/linux/realtek/dts/rtl8380_netgear_gs310tp-v1.dts b/target/linux/realtek/dts/rtl8380_netgear_gs310tp-v1.dts
index a6f7181c11e601aafc92d8ff129f5f63f674db23..9d58b3028a0bac52ad7cff4beb713042cb964621 100644 (file)
--- a/target/linux/realtek/dts/rtl8380_netgear_gs310tp-v1.dts
+++ b/target/linux/realtek/dts/rtl8380_netgear_gs310tp-v1.dts
@@ -8,6 +8,15 @@
 
 };
 
+&gpio1 {
+       poe-enable {
+               gpio-hog;
+               gpios = <10 GPIO_ACTIVE_HIGH>;
+               output-high;
+               line-name = "poe-enable";
+       };
+};
+
 &firmware {
        openwrt,ih-magic = <0x4e474335>;
 };