diff mbox

ARM: dts: imx51-zii-rdu1: limit usbh1 to full-speed

Message ID 20180515084502.17148-1-nikita.yoush@cogentembedded.com (mailing list archive)
State New, archived
Headers show

Commit Message

Nikita Yushchenko May 15, 2018, 8:45 a.m. UTC 
On RDU1, imx51 usbh1 interface is either not used, or used via external
block that breaks USB2 signalling.

To keep things working if high-speed device gets connected to that
block, use ChipIdea feature to limit port to full speed.

Signed-off-by: Nikita Yushchenko <nikita.yoush@cogentembedded.com>
---
 arch/arm/boot/dts/imx51-zii-rdu1.dts | 1 +
 1 file changed, 1 insertion(+)

Comments

Lucas Stach May 15, 2018, 8:52 a.m. UTC | #1 
Am Dienstag, den 15.05.2018, 11:45 +0300 schrieb Nikita Yushchenko:
> On RDU1, imx51 usbh1 interface is either not used, or used via
> external
> block that breaks USB2 signalling.
> 
> To keep things working if high-speed device gets connected to that
> block, use ChipIdea feature to limit port to full speed.
> 
> Signed-off-by: Nikita Yushchenko <nikita.yoush@cogentembedded.com>

Reviewed-by: Lucas Stach <l.stach@pengutronix.de>

> ---
>  arch/arm/boot/dts/imx51-zii-rdu1.dts | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/arch/arm/boot/dts/imx51-zii-rdu1.dts
> b/arch/arm/boot/dts/imx51-zii-rdu1.dts
> index 36a63ae52e48..c26f053f29b0 100644
> --- a/arch/arm/boot/dts/imx51-zii-rdu1.dts
> +++ b/arch/arm/boot/dts/imx51-zii-rdu1.dts
> @@ -603,6 +603,7 @@
>  	phy_type = "ulpi";
>  	fsl,usbphy = <&usbh1phy>;
>  	disable-over-current;
> +	maximum-speed = "full-speed";
>  	vbus-supply = <&reg_5p0v_main>;
>  	status = "okay";
>  };
Shawn Guo May 20, 2018, 12:36 p.m. UTC | #2 
On Tue, May 15, 2018 at 11:45:02AM +0300, Nikita Yushchenko wrote:
> On RDU1, imx51 usbh1 interface is either not used, or used via external
> block that breaks USB2 signalling.
> 
> To keep things working if high-speed device gets connected to that
> block, use ChipIdea feature to limit port to full speed.
> 
> Signed-off-by: Nikita Yushchenko <nikita.yoush@cogentembedded.com>

Applied, thanks.
diff mbox

Patch

diff --git a/arch/arm/boot/dts/imx51-zii-rdu1.dts b/arch/arm/boot/dts/imx51-zii-rdu1.dts
index 36a63ae52e48..c26f053f29b0 100644
--- a/arch/arm/boot/dts/imx51-zii-rdu1.dts
+++ b/arch/arm/boot/dts/imx51-zii-rdu1.dts
@@ -603,6 +603,7 @@ 
 	phy_type = "ulpi";
 	fsl,usbphy = <&usbh1phy>;
 	disable-over-current;
+	maximum-speed = "full-speed";
 	vbus-supply = <&reg_5p0v_main>;
 	status = "okay";
 };