openwrt/target/linux/brcm2708/patches-4.4/0377-BCM270X_DT-Make-i2c-gpio-usable-by-other-overlays.patch

From 432f47525a7916c723a80679b608f9bc0b4375b0 Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.org>
Date: Mon, 6 Jun 2016 09:23:37 +0100
Subject: [PATCH 377/381] BCM270X_DT: Make i2c-gpio usable by other overlays

Modify the i2c-gpio overlay to export symbol i2c-gpio for use by other
overlays. Export the alias as well for good measure.

Signed-off-by: Phil Elwell <phil@raspberrypi.org>
---
 arch/arm/boot/dts/overlays/i2c-gpio-overlay.dts | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

--- a/arch/arm/boot/dts/overlays/i2c-gpio-overlay.dts
+++ b/arch/arm/boot/dts/overlays/i2c-gpio-overlay.dts
@@ -19,6 +19,21 @@
 			};
 		};
 	};
+
+	fragment@1 {
+		target-path = "/aliases";
+		__overlay__ {
+			i2c_gpio = "/i2c@0";
+		};
+	};
+
+	fragment@2 {
+		target-path = "/__symbols__";
+		__overlay__ {
+			i2c_gpio = "/i2c@0";
+		};
+	};
+
 	__overrides__ {
 		i2c_gpio_sda = <&i2c_gpio>,"gpios:4";
 		i2c_gpio_scl = <&i2c_gpio>,"gpios:16";