* [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
2018-05-20 12:36 ` Shawn Guo
0 siblings, 2 replies; 3+ 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 = <®_5p0v_main>;
status = "okay";
};
--
2.11.0
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH] ARM: dts: imx51-zii-rdu1: limit usbh1 to full-speed
2018-05-15 8:45 [PATCH] ARM: dts: imx51-zii-rdu1: limit usbh1 to full-speed Nikita Yushchenko
@ 2018-05-15 8:52 ` Lucas Stach
2018-05-20 12:36 ` Shawn Guo
1 sibling, 0 replies; 3+ 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 = <®_5p0v_main>;
> status = "okay";
> };
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH] ARM: dts: imx51-zii-rdu1: limit usbh1 to full-speed
2018-05-15 8:45 [PATCH] ARM: dts: imx51-zii-rdu1: limit usbh1 to full-speed Nikita Yushchenko
2018-05-15 8:52 ` Lucas Stach
@ 2018-05-20 12:36 ` Shawn Guo
1 sibling, 0 replies; 3+ 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] 3+ messages in thread
end of thread, other threads:[~2018-05-20 12:36 UTC | newest]
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2018-05-15 8:45 [PATCH] ARM: dts: imx51-zii-rdu1: limit usbh1 to full-speed Nikita Yushchenko
2018-05-15 8:52 ` Lucas Stach
2018-05-20 12:36 ` Shawn Guo
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