linux-kernel - RE: [PATCH v3] phy: rcar-gen2 usb: Add Host/Function switching for USB0

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Mon, 13 Jul 2015 09:04:14 +0000
From:	Phil Edworthy <phil.edworthy@...esas.com>
To:	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>,
	"Kishon Vijay Abraham I" <kishon@...com>
CC:	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>,
	Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
	"linux-sh@...r.kernel.org" <linux-sh@...r.kernel.org>
Subject: RE: [PATCH v3] phy: rcar-gen2 usb: Add Host/Function switching for
 USB0

Hi Sergei,

On 10 July 2015 17:36, Sergei wrote:
> Hello.
> 
> On 07/07/2015 02:55 PM, Phil Edworthy wrote:
> 
> > Instead of statically selecting the PHY connection to either the
> > USBHS (Function) or PCI0 (Host) IP blocks, this change allows the
> > dts to specifiy gpio pins for the vbus and id signals. Additional
> 
>     These GPIOs don't have anything to do with the PHY, they're interfacing
> Maxim MAX3355 OTG chip for which I have submitted the extcon driver.
Hmm, I see what you mean... could you post your latest version of that
driver as it seems to have stalled 6 months ago?
 

> > gpio pins are used to control power to an external OTG device and
> > an override to turn vbus on/off.
> 
> > Note: the R-Car USB PHY only allows this Host/Function switching
> > on channel 0.
> 
> > This has been tested on a r8a7791 based Koelsch board, which uses
> > a MAX3355 device to supply vbus power when needed.
> 
> > Signed-off-by: Phil Edworthy <phil.edworthy@...esas.com>
> 
>     I'm inclined to NAK this. You're modifying the wrong driver, I think.
> 
> WBR, Sergei

Thanks
Phil
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/