[PATCH 3/3] ARM: dts: imx6: rdu2: Limit USBH1 to Full Speed

[Andrey Smirnov]

Cabling used to connect devices to USBH1 on RDU2 does not meet USB
spec cable quality and cable length requirements to operate at High
Speed, so limit the port to Full Speed only.

Reported-by: Chris Healy <cphe...@gmail.com>
Signed-off-by: Andrey Smirnov <andrew.smir...@gmail.com>
Cc: Shawn Guo <shawn...@kernel.org>
Cc: Fabio Estevam <feste...@gmail.com>
Cc: Lucas Stach <l.st...@pengutronix.de>
Cc: linux-arm-ker...@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
---
 arch/arm/boot/dts/imx6qdl-zii-rdu2.dtsi | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/boot/dts/imx6qdl-zii-rdu2.dtsi 
b/arch/arm/boot/dts/imx6qdl-zii-rdu2.dtsi
index 5484e4b87975..3b37fe68d373 100644
--- a/arch/arm/boot/dts/imx6qdl-zii-rdu2.dtsi
+++ b/arch/arm/boot/dts/imx6qdl-zii-rdu2.dtsi
@@ -772,6 +772,7 @@
 &usbh1 {
        vbus-supply = <&reg_5p0v_main>;
        disable-over-current;
+       maximum-speed = "full-speed";
        status = "okay";
 };
 
-- 
2.21.0