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Date: Wed, 25 Mar 2015 15:17:17 -0700
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Subject: Re: [PATCH v1 1/3] phy: phy-core: allow specifying supply at port level
From: Dmitry Torokhov <dtor@google.com>
To: Kishon Vijay Abraham I <kishon@ti.com>
Cc: Arun Ramamurthy <arun.ramamurthy@broadcom.com>,
        Rob Herring <robh+dt@kernel.org>, Pawel Moll <pawel.moll@arm.com>,
        Mark Rutland <mark.rutland@arm.com>,
        Ian Campbell <ijc+devicetree@hellion.org.uk>,
        Kumar Gala <galak@codeaurora.org>, Arnd Bergmann <arnd@arndb.de>,
        devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
        bcm-kernel-feedback-list@broadcom.com,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        Anatol Pomazau <anatol@google.com>,
        Jonathan Richardson <jonathar@broadcom.com>,
        Scott Branden <sbranden@broadcom.com>, Ray Jui <rjui@broadcom.com>,
        Dmitry Torokhov <dtor@chromium.org>
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On Wed, Mar 25, 2015 at 3:11 PM, Kishon Vijay Abraham I <kishon@ti.com> wrote:
> Hi,
>
> On Saturday 21 March 2015 02:55 AM, Arun Ramamurthy wrote:
>> Multi-port phy's may have per-port power supplies. Let's change phy core
>> to first attempt to look up the supply at the port level, and then, if
>> not found, check parent device.
>
> Why not just have every port provide the power supply if it needs?
> I don't think checking for parent device should be present in the phy-core at
> all.

We need to do that if we want to keep compatibility with the current
DTSes: before this patch the supply would be always looked up on
device and not port level.

Thanks,
Dmitry