Messages in this thread Patch in this message | | | From | Andrey Smirnov <> | Subject | [PATCH v3 3/3] ARM: dts: imx6: rdu2: Limit USBH1 to Full Speed | Date | Mon, 9 Dec 2019 08:50:18 -0800 |
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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 = <®_5p0v_main>; disable-over-current; + maximum-speed = "full-speed"; status = "okay"; }; -- 2.21.0
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