From 36acb3db03a3cf7dee80a1fc3b6f8f70efd20294 Mon Sep 17 00:00:00 2001 From: Alexandru Gagniuc Date: Sat, 21 May 2022 21:59:10 -0500 Subject: [PATCH] realtek: EnGenius EWS2910P: declare and hog the poe-enable GPIO 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 --- .../linux/realtek/dts-5.10/rtl8380_engenius_ews2910p.dts | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/target/linux/realtek/dts-5.10/rtl8380_engenius_ews2910p.dts b/target/linux/realtek/dts-5.10/rtl8380_engenius_ews2910p.dts index f87c9585f9..dd57b2bf48 100644 --- a/target/linux/realtek/dts-5.10/rtl8380_engenius_ews2910p.dts +++ b/target/linux/realtek/dts-5.10/rtl8380_engenius_ews2910p.dts @@ -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)>, -- 2.30.2