From: sergei.shtylyov@cogentembedded•com (Sergei Shtylyov)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH v2 06/11] phy: da8xx-usb: new driver for DA8XX SoC USB PHY
Date: Fri, 1 Apr 2016 22:49:25 +0300 [thread overview]
Message-ID: <56FED0C5.1000603@cogentembedded.com> (raw)
In-Reply-To: <20160401161931.GC6264@uda0271908>
On 04/01/2016 07:19 PM, 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.
No, it does.
> 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.
Both these places do select OTG mode.
> Regards,
> -Bin.
MBR, Sergei
next prev parent reply other threads:[~2016-04-01 19:49 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-17 2:26 [PATCH v2 00/11] da8xx USB clocks David Lechner
2016-03-17 2:26 ` [PATCH v2 01/11] ARM: davinci: defined missing CFGCHIP2_REFFREQ_* macros for MUSB PHY David Lechner
2016-03-17 2:26 ` [PATCH v2 02/11] ARM: davinci: add set_parent callback for mux clocks David Lechner
2016-03-17 2:26 ` [PATCH v2 03/11] ARM: davinci: da850: use clk->set_parent for async3 David Lechner
2016-03-23 15:56 ` Sekhar Nori
2016-03-23 17:20 ` David Lechner
2016-03-23 17:29 ` Sekhar Nori
2016-03-23 18:32 ` David Lechner
2016-03-24 13:44 ` Sekhar Nori
2016-03-17 2:26 ` [PATCH v2 04/11] ARM: davinci: da8xx: add usb phy clocks David Lechner
2016-03-17 12:12 ` Sergei Shtylyov
2016-03-23 16:56 ` Sekhar Nori
2016-03-23 17:45 ` David Lechner
2016-03-23 17:54 ` Sekhar Nori
2016-03-17 2:26 ` [PATCH v2 05/11] dt-bindings: Add bindings for phy-da8xx-usb David Lechner
2016-03-19 23:56 ` Rob Herring
2016-03-23 17:06 ` Sekhar Nori
2016-03-23 17:56 ` David Lechner
2016-03-17 2:26 ` [PATCH v2 06/11] phy: da8xx-usb: new driver for DA8XX SoC USB PHY David Lechner
2016-03-17 12:38 ` Sergei Shtylyov
2016-03-23 17:21 ` Sekhar Nori
2016-03-23 18:06 ` David Lechner
2016-03-24 14:01 ` David Laight
2016-04-01 13:16 ` Kishon Vijay Abraham I
2016-04-01 14:45 ` Bin Liu
2016-04-01 16:02 ` David Lechner
2016-04-01 16:19 ` Bin Liu
2016-04-01 19:49 ` Sergei Shtylyov [this message]
2016-04-01 19:45 ` Sergei Shtylyov
2016-04-01 19:56 ` Bin Liu
2016-04-13 20:51 ` David Lechner
2016-04-14 12:32 ` Kishon Vijay Abraham I
2016-03-17 2:26 ` [PATCH v2 07/11] ARM: davinci: da8xx: Add USB PHY platform declaration David Lechner
2016-03-17 2:26 ` [PATCH v2 08/11] ARM: dt: da850: Add usb phy node David Lechner
2016-03-17 2:26 ` [PATCH v2 09/11] usb: ohci-da8xx: Remove code that references mach David Lechner
2016-03-17 12:53 ` Sergei Shtylyov
2016-03-17 2:26 ` [PATCH v2 10/11] usb: musb: da8xx: Use devm in probe David Lechner
2016-03-17 11:07 ` Sergei Shtylyov
2016-03-17 2:26 ` [PATCH v2 11/11] usb: musb: da8xx: Remove mach code David Lechner
2016-03-17 13:11 ` Sergei Shtylyov
2016-03-17 17:38 ` David Lechner
2016-03-17 13:39 ` [PATCH v2 00/11] da8xx USB clocks Sergei Shtylyov
2016-03-23 17:26 ` Sekhar Nori
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