linux-kernel - Re: [PATCH 1/7] phy: exynos-usb2: add vbus regulator support

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Message-id: <55DC0173.9030702@samsung.com>
Date:	Tue, 25 Aug 2015 07:47:31 +0200
From:	Marek Szyprowski <m.szyprowski@...sung.com>
To:	Kishon Vijay Abraham I <kishon@...com>, linux-usb@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-samsung-soc@...r.kernel.org
Cc:	Robert Baldyga <r.baldyga@...sung.com>,
	John Youn <johnyoun@...opsys.com>,
	Krzysztof Kozlowski <k.kozlowski@...sung.com>,
	Kukjin Kim <kgene@...nel.org>,
	Kamil Debski <k.debski@...sung.com>
Subject: Re: [PATCH 1/7] phy: exynos-usb2: add vbus regulator support

Hello,

On 2015-08-21 14:44, Kishon Vijay Abraham I wrote:
> On Friday 21 August 2015 06:08 PM, Marek Szyprowski wrote:
>> Exynos USB2 PHY has separate power supply, which is usually provided by
>> VBUS regulator. This patch adds support for it. VBUS regulator is
>> optional, to keep compatibility with boards, which have VBUS provided
>> from some always-on power source.
>>
>> Signed-off-by: Marek Szyprowski <m.szyprowski@...sung.com>
>> ---
>>   .../devicetree/bindings/phy/samsung-phy.txt        |  3 +++
>>   drivers/phy/phy-samsung-usb2.c                     | 25 ++++++++++++++++++++--
>>   drivers/phy/phy-samsung-usb2.h                     |  2 ++
>>   3 files changed, 28 insertions(+), 2 deletions(-)
>>
>> diff --git a/Documentation/devicetree/bindings/phy/samsung-phy.txt b/Documentation/devicetree/bindings/phy/samsung-phy.txt
>> index 60c6f2a633e0..0289d3b07853 100644
>> --- a/Documentation/devicetree/bindings/phy/samsung-phy.txt
>> +++ b/Documentation/devicetree/bindings/phy/samsung-phy.txt
>> @@ -44,6 +44,9 @@ Required properties:
>>   	- the "ref" clock is used to get the rate of the clock provided to the
>>   	  PHY module
>>   
>> +Optional properties:
>> +- vbus-supply: power-supply phandle for vbus power source
> how about using phy-supply?

I wanted to make it a bit more descriptive (vbus-supply is rather self 
explaining name)
and keep it in line with Exynos usb3-drd phy, which already supports 
vbus-supply.
If you think that this is a bad idea, a will use phy-supply then.

Best regards
-- 
Marek Szyprowski, PhD
Samsung R&D Institute Poland

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