EAP235-Wall PoE passthrough regulator

From aa240909b9c14977c75600559d2b4d7d182ad995 Mon Sep 17 00:00:00 2001
From: Sander Vanheule <sander@svanheule.net>
Date: Thu, 13 May 2021 09:05:16 +0200
Subject: [PATCH] ramips: replace PoE gpio-export by regulator

A PoE passthrough as present on the TP-Link EAP235-Wall can also be seen
as a regulator with a fixed voltage output. Replace the gpio-export node
by a fixed-regulator node.

Signed-off-by: Sander Vanheule <sander@svanheule.net>
---
 .../ramips/dts/mt7621_tplink_eap235-wall-v1.dts   | 15 ++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/target/linux/ramips/dts/mt7621_tplink_eap235-wall-v1.dts b/target/linux/ramips/dts/mt7621_tplink_eap235-wall-v1.dts
index 17308eb605b8..b6f8a2b7ca1e 100644
--- a/target/linux/ramips/dts/mt7621_tplink_eap235-wall-v1.dts
+++ b/target/linux/ramips/dts/mt7621_tplink_eap235-wall-v1.dts
@@ -45,14 +45,16 @@
 		};
 	};
 
-	gpio-export {
-		compatible = "gpio-export";
+	poe_passthrough {
+		compatible = "regulator-fixed";
 
-		poe_passthrough {
-			gpio-export,name = "poe-passthrough";
-			gpio-export,output = <0>;
-			gpios = <&gpio 7 GPIO_ACTIVE_HIGH>;
-		};
+		regulator-name = "poe-passthrough";
+		regulator-min-microvolt = <54000000>;
+		regulator-max-microvolt = <54000000>;
+   regulator-always-on;
+
+		gpio = <&gpio 7 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
 	};
 }