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* [PATCH] ARM: dts: imx51-zii-rdu1: limit usbh1 to full-speed
@ 2018-05-15  8:45 ` Nikita Yushchenko
  0 siblings, 0 replies; 6+ messages in thread
From: Nikita Yushchenko @ 2018-05-15  8:45 UTC (permalink / raw)
  To: Shawn Guo, Sascha Hauer, Pengutronix Kernel Team, Fabio Estevam,
	Rob Herring, Mark Rutland, Lucas Stach, Chris Healy,
	Andrey Smirnov, Marco Franchi
  Cc: linux-arm-kernel, devicetree, linux-kernel, 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>
---
 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";
 };
-- 
2.11.0

^ permalink raw reply related	[flat|nested] 6+ messages in thread
* [PATCH] ARM: dts: imx51-zii-rdu1: limit usbh1 to full-speed
@ 2018-05-15  8:45 ` Nikita Yushchenko
  0 siblings, 0 replies; 6+ messages in thread
From: Nikita Yushchenko @ 2018-05-15  8:45 UTC (permalink / raw)
  To: linux-arm-kernel

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(+)

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";
 };
-- 
2.11.0

^ permalink raw reply related	[flat|nested] 6+ messages in thread
* Re: [PATCH] ARM: dts: imx51-zii-rdu1: limit usbh1 to full-speed
  2018-05-15  8:45 ` Nikita Yushchenko
@ 2018-05-15  8:52   ` Lucas Stach
  -1 siblings, 0 replies; 6+ messages in thread
From: Lucas Stach @ 2018-05-15  8:52 UTC (permalink / raw)
  To: Nikita Yushchenko, Shawn Guo, Sascha Hauer,
	Pengutronix Kernel Team, Fabio Estevam, Rob Herring,
	Mark Rutland, Chris Healy, Andrey Smirnov, Marco Franchi
  Cc: linux-arm-kernel, devicetree, linux-kernel

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";
>  };

^ permalink raw reply	[flat|nested] 6+ messages in thread
* [PATCH] ARM: dts: imx51-zii-rdu1: limit usbh1 to full-speed
@ 2018-05-15  8:52   ` Lucas Stach
  0 siblings, 0 replies; 6+ messages in thread
From: Lucas Stach @ 2018-05-15  8:52 UTC (permalink / raw)
  To: linux-arm-kernel

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";
> ?};

^ permalink raw reply	[flat|nested] 6+ messages in thread
* Re: [PATCH] ARM: dts: imx51-zii-rdu1: limit usbh1 to full-speed
  2018-05-15  8:45 ` Nikita Yushchenko
@ 2018-05-20 12:36   ` Shawn Guo
  -1 siblings, 0 replies; 6+ messages in thread
From: Shawn Guo @ 2018-05-20 12:36 UTC (permalink / raw)
  To: Nikita Yushchenko
  Cc: Sascha Hauer, Pengutronix Kernel Team, Fabio Estevam,
	Rob Herring, Mark Rutland, Lucas Stach, Chris Healy,
	Andrey Smirnov, Marco Franchi, linux-arm-kernel, devicetree,
	linux-kernel

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.

^ permalink raw reply	[flat|nested] 6+ messages in thread
* [PATCH] ARM: dts: imx51-zii-rdu1: limit usbh1 to full-speed
@ 2018-05-20 12:36   ` Shawn Guo
  0 siblings, 0 replies; 6+ messages in thread
From: Shawn Guo @ 2018-05-20 12:36 UTC (permalink / raw)
  To: linux-arm-kernel

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.

^ permalink raw reply	[flat|nested] 6+ messages in thread
end of thread, other threads:[~2018-05-20 12:37 UTC | newest]

Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2018-05-15  8:45 [PATCH] ARM: dts: imx51-zii-rdu1: limit usbh1 to full-speed Nikita Yushchenko
2018-05-15  8:45 ` Nikita Yushchenko
2018-05-15  8:52 ` Lucas Stach
2018-05-15  8:52   ` Lucas Stach
2018-05-20 12:36 ` Shawn Guo
2018-05-20 12:36   ` Shawn Guo

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