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realtek: EnGenius EWS2910P: declare and hog the poe-enable GPIO

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GPIO 1 on the RTL8231 is used to force the PoE MCU to disable power
outputs. It is not used by any driver, but if accidentally set low,
PoE outputs are disabled. This situation is hard to debug, and
requires knowledge of the Broadcom PoE protocol used by the MCU.

To prevent this situation, hog it as an output high. This is
consistent with the ZyXel GS1900 series handles it.

Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
This commit is contained in:
Alexandru Gagniuc 2022-05-21 21:59:10 -05:00 committed by Sander Vanheule
parent 04545c4325
commit 36acb3db03
1 changed files with 7 additions and 0 deletions
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7
target/linux/realtek/dts-5.10/rtl8380_engenius_ews2910p.dts
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@ -43,6 +43,13 @@
gpio-controller;
indirect-access-bus-id = <0>;
poe_enable {
gpio-hog;
gpios = <1 GPIO_ACTIVE_HIGH>;
output-high;
line-name = "poe-enable";
};
sff_p9_gpios {
gpio-hog;
gpios = < 6 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>,