linux-kernel - Re: [PATCH v3 0/9] phy: use syscon framework APIs to set ctrl mod reg

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Date:	Fri, 18 Dec 2015 15:46:21 +0530
From:	Kishon Vijay Abraham I <kishon@...com>
To:	Tony Lindgren <tony@...mide.com>
CC:	Arnd Bergmann <arnd@...db.de>, <devicetree@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <linux-omap@...r.kernel.org>,
	<robh+dt@...nel.org>, <pawel.moll@....com>, <mark.rutland@....com>,
	<ijc+devicetree@...lion.org.uk>, <galak@...eaurora.org>,
	<rogerq@...com>, <nsekhar@...com>, <linux-pci@...r.kernel.org>,
	<linux-usb@...r.kernel.org>, <t-kristo@...com>
Subject: Re: [PATCH v3 0/9] phy: use syscon framework APIs to set ctrl mod reg

Hi,

On Tuesday 15 December 2015 08:56 PM, Tony Lindgren wrote:
> * Kishon Vijay Abraham I <kishon@...com> [151215 04:47]:
>> On Tuesday 15 December 2015 05:25 PM, Arnd Bergmann wrote:
>>>>>
>>>>> Can you explain here what the conversion is good for? Why do you
>>>>> prefer the syscon mapping over a high-level driver in this case?
>>>>
>>>> phy-omap-control driver was added when there was no proper
>>>> infrastructure for doing control module initializations. The
>>>> phy-omap-control driver is not an 'actual' PHY driver and it
>>>> was just a hack to do PHY related control module initializations.
>>>> phy-omap-control is also getting unmanageable with the number of
>>>> platforms each having number of modules (like USB, SATA, PCIe),
>>>> using the same driver for control module initializations.
>>>>
>>>> Now with SYSCON framework being added to the kernel, phy-omap-control
>>>> shouldn't be needed and it also provides a uniform API across all the
>>>> modules to program the control module.
>>>
>>> Ok, so the "phy-control" devices were really just a few registers of
>>> a system controller device that does a lot of other things as well, right?
>>
>> right.
>>>
>>> Can you put your description above into the cover-letter for the series,
>>> and the merge commit?
> 
> Just to confirm.. Seems like this series keeps USB working and the dts
> changes can be done later after the driver changes have been merged?

that's right Tony. Will merge this series by tomorrow if I don't get any review
comments.

Thanks
Kishon
> 
> Regards,
> 
> Tony
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