From 181f087a38d8d5c7f7d5499f4d537c4625d3f1da Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Diego=20Elio=20Petten=C3=B2?= <flameeyes@meta.com>
Date: Sun, 10 Sep 2023 19:54:14 +0100
Subject: [PATCH] ev11l78a: add en_sink as a custom binding.
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

This exposes the EN_SINK signal as a custom binding, since it is ore to
the business logic of the board.

EN_SINK is a GPIO line connected to a MOSFET that provides power on the
screw terminal of the board, and should be enabled after USB-PD
negotiation.

Signed-off-by: Diego Elio Pettenò <flameeyes@meta.com>
---
 .../dts/bindings/microchip,ev11l78a-ensink.yaml     | 13 +++++++++++++
 boards/arm/ev11l78a/ev11l78a.dts                    |  5 +++++
 2 files changed, 18 insertions(+)
 create mode 100644 boards/arm/ev11l78a/dts/bindings/microchip,ev11l78a-ensink.yaml

diff --git a/boards/arm/ev11l78a/dts/bindings/microchip,ev11l78a-ensink.yaml b/boards/arm/ev11l78a/dts/bindings/microchip,ev11l78a-ensink.yaml
new file mode 100644
index 00000000000000..b22f4a0d38e60f
--- /dev/null
+++ b/boards/arm/ev11l78a/dts/bindings/microchip,ev11l78a-ensink.yaml
@@ -0,0 +1,13 @@
+# Copyright (c) 2023, Meta Platforms, Inc. and its affiliates.
+# SPDX-License-Identifier: Apache-2.0
+
+description: GPIO used to enable the power Sink on the EV11L78A board
+
+compatible: "microchip,ev11l78a-ensink"
+
+properties:
+  gpios:
+    type: phandle-array
+    required: true
+    description: |
+      GPIO to enable the power sink on the EV11L78A board, output.
diff --git a/boards/arm/ev11l78a/ev11l78a.dts b/boards/arm/ev11l78a/ev11l78a.dts
index 0c5f26bde8e269..23089afb3a51f1 100644
--- a/boards/arm/ev11l78a/ev11l78a.dts
+++ b/boards/arm/ev11l78a/ev11l78a.dts
@@ -43,6 +43,11 @@
 		sense-gain-mult = <100>;
 	};
 
+	enable_sink: enable_sink {
+		compatible = "microchip,ev11l78a-ensink";
+		gpios = <&porta 22 GPIO_ACTIVE_HIGH>;
+	};
+
 };
 
 &cpu0 {