From: Sander Vanheule <sander@svanheule.net>
Date: Thu, 25 Nov 2021 05:41:59 +0000 (+0100)
Subject: realtek: netgear-gigabit: Add gpio-restart node
X-Git-Tag: v22.03.0-rc1~1064
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=22f85d63cf47450604c0256b332942e845b1079f;p=openwrt%2Fopenwrt.git

realtek: netgear-gigabit: Add gpio-restart node

The Netgear GS110TPP v1 switch cannot reliably perform cold reboots
using the system's internal reset controller.

On this device, and the other supported Netgear switches, internal GPIO
line 13 is connected to the system's hard reset logic. Expose this GPIO
on all systems to ensure restarts work properly.

Cc: Raylynn Knight <rayknight@me.com>
Cc: Michael Mohr <akihana@gmail.com>
Cc: Stijn Segers <foss@volatilesystems.org>
Cc: Stijn Tintel <stijn@linux-ipv6.be>
Signed-off-by: Sander Vanheule <sander@svanheule.net>
Tested-by: Bjørn Mork <bjorn@mork.no>
---

diff --git a/target/linux/realtek/dts-5.10/rtl8380_netgear_gigabit.dtsi b/target/linux/realtek/dts-5.10/rtl8380_netgear_gigabit.dtsi
index 6eb316231b..72956359d1 100644
--- a/target/linux/realtek/dts-5.10/rtl8380_netgear_gigabit.dtsi
+++ b/target/linux/realtek/dts-5.10/rtl8380_netgear_gigabit.dtsi
@@ -22,6 +22,12 @@
 			linux,code = <KEY_RESTART>;
 		};
 	};
+
+	gpio-restart {
+		compatible = "gpio-restart";
+		gpios = <&gpio0 13 GPIO_ACTIVE_LOW>;
+		open-source;
+	};
 };
 
 &gpio0 {