Re: [PATCH v2 06/11] phy: da8xx-usb: new driver for DA8XX SoC USB PHY

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 




Hi,

On Fri, Apr 01, 2016 at 11:02:23AM -0500, David Lechner wrote:
> On 04/01/2016 09:45 AM, Bin Liu wrote:
> >>>+EXPORT_SYMBOL_GPL(da8xx_usb20_phy_set_mode);
> >>
> >>Don't prefer export symbols from PHY driver. That'll create unnecessary
> >>dependencies between the controller and the PHY.
> >
> >Agreed.
> >
> >>
> >>I think it'll be better to create a new attribute and use it?
> >
> >Another simpler option is to not support _set_mode() for DA8xx, and the
> >phy driver set the otgmode bit in probe() based on dr_mode of the
> >controller.
> >
> >Regards,
> >-Bin.
> >
> 
> This certainly works for my particular use case, however, Sergei
> Shtylyov, who wrote the da8xx musb glue layer originally, seemed to
> recall in his review of the patch series that this really is
> necessary for OTG mode to work properly.

I don't know much about the usb module on DA8xx, but it seems to me that
_set_mode() has nothing to do with OTG mode. musb_core only calls
_set_mode() in two places - 1) sysfs: musb_mode_store(), 2) init:
musb_init_controller(). None of them should be related to OTG mode.

Regards,
-Bin.

--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html



[Index of Archives]     [Device Tree Compilter]     [Device Tree Spec]     [Linux Driver Backports]     [Video for Linux]     [Linux USB Devel]     [Linux PCI Devel]     [Linux Audio Users]     [Linux Kernel]     [Linux SCSI]     [XFree86]     [Yosemite Backpacking]
  Powered by Linux