linux-kernel - [PATCH 1/1] ARM: dts: dra7x-evm: Enable dual-role mode for USB1

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Date:   Tue, 11 Apr 2017 16:16:15 +0300
From:   Roger Quadros <rogerq@...com>
To:     <tony@...mide.com>
CC:     <linux-omap@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, Roger Quadros <rogerq@...com>,
        Sekhar Nori <nsekhar@...com>
Subject: [PATCH 1/1] ARM: dts: dra7x-evm: Enable dual-role mode for USB1

USB1 port is micro-AB type and can function as peripheral
as well as host. Enable dual-role mode for USB1.

We don't want to use the OTG controller block on this
platform as it limits host mode to high-speed. Instead
we rely on extcon framework to give us ID events for
dual-role mode detection.

Signed-off-by: Roger Quadros <rogerq@...com>
Signed-off-by: Sekhar Nori <nsekhar@...com>
---
 arch/arm/boot/dts/dra7-evm.dts          | 3 ++-
 arch/arm/boot/dts/dra72-evm-common.dtsi | 3 ++-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/arch/arm/boot/dts/dra7-evm.dts b/arch/arm/boot/dts/dra7-evm.dts
index 4bc4b57..c408aaa 100644
--- a/arch/arm/boot/dts/dra7-evm.dts
+++ b/arch/arm/boot/dts/dra7-evm.dts
@@ -527,7 +527,8 @@
 };
 
 &usb1 {
-	dr_mode = "peripheral";
+	dr_mode = "otg";
+	extcon = <&extcon_usb1>;
 };
 
 &usb2 {
diff --git a/arch/arm/boot/dts/dra72-evm-common.dtsi b/arch/arm/boot/dts/dra72-evm-common.dtsi
index ad24544..8578054 100644
--- a/arch/arm/boot/dts/dra72-evm-common.dtsi
+++ b/arch/arm/boot/dts/dra72-evm-common.dtsi
@@ -392,7 +392,8 @@
 };
 
 &usb1 {
-	dr_mode = "peripheral";
+	dr_mode = "otg";
+	extcon = <&extcon_usb1>;
 };
 
 &usb2 {
-- 
2.7.4