linux-kernel - Re: [PATCH 1/2] phy: usbphy: Add dt documentation for Broadcom Cygnus USB PHY driver

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Message-ID: <54E39DF1.50409@broadcom.com>
Date:	Tue, 17 Feb 2015 12:00:49 -0800
From:	Arun Ramamurthy <arun.ramamurthy@...adcom.com>
To:	Arnd Bergmann <arnd@...db.de>
CC:	Kishon Vijay Abraham I <kishon@...com>,
	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>,
	<devicetree@...r.kernel.org>,
	Jonathan Richardson <jonathar@...adcom.com>,
	Scott Branden <sbranden@...adcom.com>,
	Ray Jui <rjui@...adcom.com>,
	<linux-arm-kernel@...ts.infradead.org>,
	<bcm-kernel-feedback-list@...adcom.com>,
	<linux-kernel@...r.kernel.org>, Dmitry Torokhov <dtor@...gle.com>,
	Anatol Pomazau <anatol@...gle.com>
Subject: Re: [PATCH 1/2] phy: usbphy: Add dt documentation for Broadcom Cygnus
 USB PHY driver

Thank you for the review Arnd.
On 15-02-17 11:41 AM, Arnd Bergmann wrote:
> On Tuesday 17 February 2015 11:20:20 Arun Ramamurthy wrote:
>> +       /* This nodes declares  port 0
>> +       and port 1 as host*/
>> +
>> +       ehci0: usb@...8048000 {
>> +               compatible = "generic-ehci";
>> +               reg = <0x18048000 0x100>;
>> +               interrupts = <GIC_SPI 72 IRQ_TYPE_LEVEL_HIGH>;
>> +               phys = <&usbphy0 0 1 &usbphy0 1>;
>
> The second reference in the example is missing the last cell,
> as you have #phy-cells = <2>.
>
I am missing a 1 for the port number, will update in next patchset, 
thank you
>> +               phy-names = "usbp0","usbp1";
>> +               status = "okay";
>> +       };
>
> Further, the binding for "generic-ehci" requires the name to be "usb",
> not "usbp0". You should probably update that binding if you can have
> multiple references to mention that.
>
> Can you make both names "usb"? If not, we should document a common
> naming scheme that the driver can use.
>
Arnd, I patched the ehci and ohci driver to accept multiple phys so they 
require different names and cannot both be "usb". That patch was 
accepted by Alen Stern but I did not update the bindings documentation.
I will send out another patch for that. Could we go with the naming 
scheme of "usb" + "p" + port number or do you have other suggestions?


> 	Arnd
>
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