[PATCH v3 3/3] ARM: dts: imx6: rdu2: Limit USBH1 to Full Speed

[Andrey Smirnov <andrew.smirnov@gmail.com>]

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 <cphealy@gmail.com>
Reviewed-by: Chris Healy <cphealy@gmail.com>
Reviewed-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: linux-arm-kernel@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 d062c86e0762..ca0b81c41998 100644
--- a/arch/arm/boot/dts/imx6qdl-zii-rdu2.dtsi
+++ b/arch/arm/boot/dts/imx6qdl-zii-rdu2.dtsi
@@ -890,6 +890,7 @@
 &usbh1 {
 	vbus-supply = <&reg_5p0v_main>;
 	disable-over-current;
+	maximum-speed = "full-speed";
 	status = "okay";
 };
 
-- 
2.21.0