linux-kernel - Re: [PATCH v4 4/4] ARM: dts: Add exynos5250-spring device tree

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Message-ID: <53DA7F2E.2030109@suse.de>
Date:	Thu, 31 Jul 2014 19:38:54 +0200
From:	Andreas Färber <afaerber@...e.de>
To:	Vincent Palatin <vpalatin@...omium.org>
CC:	linux-samsung-soc <linux-samsung-soc@...r.kernel.org>,
	ARM PORT <linux-arm-kernel@...ts.infradead.org>,
	"OPEN FIRMWARE AND..." <devicetree@...r.kernel.org>,
	Stephan van Schaik <stephan@...khronix.com>,
	Doug Anderson <dianders@...omium.org>,
	Javier Martinez Canillas <javier.martinez@...labora.co.uk>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Russell King <linux@....linux.org.uk>,
	Ben Dooks <ben-linux@...ff.org>,
	Kukjin Kim <kgene.kim@...sung.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v4 4/4] ARM: dts: Add exynos5250-spring device tree

Am 31.07.2014 19:14, schrieb Andreas Färber:
> Hi,
> 
> Am 31.07.2014 19:00, schrieb Vincent Palatin:
>> Always a bit late to the game.
>> One small comment inline.
>>
>> Reviewed-by: Vincent Palatin <vpalatin@...omium.org>
> 
> Thanks,
> 
>>
>> On Thu, Jul 31, 2014 at 9:08 AM, Andreas Färber <afaerber@...e.de> wrote:
>>> +       usb3_vbus_reg: regulator-usb3 {
>>> +               compatible = "regulator-fixed";
>>> +               regulator-name = "P5.0V_USB3CON";
>>> +               regulator-min-microvolt = <5000000>;
>>> +               regulator-max-microvolt = <5000000>;
>>> +               gpio = <&gpe1 0 GPIO_ACTIVE_LOW>;
>>> +               enable-active-high;
>>> +       };
>>
>> GPE1_0 GPIO is the HSIC hub (SMSC 3503) reset# line (already defined
>> below afaik).
> 
> Yes, that was a suggestion you made on v1.
> 
>> On this design there is no external USB3 port, so no VBUS reg/load
>> switch for USB3.
> 
> Could you be a little clearer? Are you suggesting to drop the gpio
> property?

Nah, doesn't work. Do we need a pinctrl on the usb-hub instead?

Andreas

> I just re-tested that without the regulator node plus the
> vbus-supply below I don't get any USB2 (so maybe rename the regulator?).
> 
> Regards,
> Andreas
> 
>>> +
>>> +       usb@...10000 {
>>> +               samsung,vbus-gpio = <&gpx1 1 GPIO_ACTIVE_HIGH>;
>>> +       };
>>> +
>>> +       usb-hub {
>>> +               compatible = "smsc,usb3503a";
>>> +               reset-gpios = <&hsic_reset>;
>>> +       };
> [...]
>>> +&usbdrd_phy {
>>> +       vbus-supply = <&usb3_vbus_reg>;
>>> +};
>>> +
>>> +#include "cros-ec-keyboard.dtsi"
>>> --
>>> 1.9.3
> 


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