From mboxrd@z Thu Jan  1 00:00:00 1970
From: Kishon Vijay Abraham I <kishon@ti.com>
Subject: Re: [PATCH v2 2/7] usb: dwc3: adapt dwc3 core to use Generic PHY
 Framework
Date: Tue, 3 Dec 2013 19:43:37 +0530
Message-ID: <529DE711.2090008@ti.com>
References: <1381866857-3861-1-git-send-email-kishon@ti.com> <1381866857-3861-3-git-send-email-kishon@ti.com> <20131203115927.GD26423@xps8300>
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To: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Cc: balbi@ti.com, gregkh@linuxfoundation.org, rob.herring@calxeda.com, pawel.moll@arm.com, mark.rutland@arm.com, swarren@wwwdotorg.org, ijc+devicetree@hellion.org.uk, rob@landley.net, bcousson@baylibre.com, tony@atomide.com, linux@arm.linux.org.uk, grant.likely@linaro.org, s.nawrocki@samsung.com, galak@codeaurora.org, devicetree@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-usb@vger.kernel.org
List-Id: devicetree@vger.kernel.org

Hi,

On Tuesday 03 December 2013 05:29 PM, Heikki Krogerus wrote:
> Hi Kishon,
> 
> On Wed, Oct 16, 2013 at 01:24:12AM +0530, Kishon Vijay Abraham I wrote:
>> +	count = of_property_match_string(node, "phy-names", "usb2-phy");
>> +	if (count >= 0 || (pdata && pdata->usb2_generic_phy)) {
>> +		dwc->usb2_generic_phy = devm_phy_get(dev, "usb2-phy");
>> +		if (IS_ERR(dwc->usb2_generic_phy)) {
>> +			dev_err(dev, "no usb2 phy configured yet");
>> +			return PTR_ERR(dwc->usb2_generic_phy);
>> +		}
>> +		dwc->usb2_phy = NULL;
>> +	}
>> +
>> +	count = of_property_match_string(node, "phy-names", "usb3-phy");
>> +	if (count >= 0 || (pdata && pdata->usb3_generic_phy)) {
>> +		dwc->usb3_generic_phy = devm_phy_get(dev, "usb3-phy");
>> +		if (IS_ERR(dwc->usb3_generic_phy)) {
>> +			dev_err(dev, "no usb3 phy configured yet");
>> +			return PTR_ERR(dwc->usb3_generic_phy);
>> +		}
>> +		dwc->usb3_phy = NULL;
>> +	}
> 
> Is there some specific reason for these checks? The driver should not
> need to care about the platform (DT, ACPI, platform based).

yeah just wanted to throw an error if a platform needs PHY but wasn't able to
get it. Btw this has changed after my v3 of this patch series which I sent
sometime back [1] where we use quirks to know if a PHY is needed for that
platform or not.

http://www.spinics.net/lists/linux-usb/msg98077.html

Thanks
Kishon