linux-kernel - Re: [PATCH v7 8/9] phy: add Broadcom Kona USB2 PHY driver

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Message-ID: <20131219142536.GG15814@beef>
Date:	Thu, 19 Dec 2013 09:25:36 -0500
From:	Matt Porter <mporter@...aro.org>
To:	Kishon Vijay Abraham I <kishon@...com>
Cc:	balbi@...com, Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Rob Herring <rob.herring@...xeda.com>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Kumar Gala <galak@...eaurora.org>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Christian Daudt <bcm@...thebug.org>,
	Paul Zimmerman <paulz@...opsys.com>,
	Tomasz Figa <t.figa@...sung.com>,
	Kamil Debski <k.debski@...sung.com>,
	Kyungmin Park <kyungmin.park@...sung.com>,
	Dinh Nguyen <dinh.linux@...il.com>,
	Russell King <linux@....linux.org.uk>,
	Linux USB List <linux-usb@...r.kernel.org>,
	Linux ARM Kernel List <linux-arm-kernel@...ts.infradead.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Devicetree List <devicetree@...r.kernel.org>,
	Linaro Patches <patches@...aro.org>
Subject: Re: [PATCH v7 8/9] phy: add Broadcom Kona USB2 PHY driver

On Thu, Dec 19, 2013 at 11:19:35AM +0530, Kishon Vijay Abraham I wrote:
> Hi Felipe,
> 
> On Wednesday 18 December 2013 09:55 PM, Felipe Balbi wrote:
> > On Tue, Dec 17, 2013 at 02:42:35PM -0500, Matt Porter wrote:
> >> Add a driver for the internal Broadcom Kona USB 2.0 PHY found
> >> on the BCM281xx family of SoCs.
> >>
> >> Signed-off-by: Matt Porter <mporter@...aro.org>
> > 
> > Kishon, are you ok with this driver ?
> 
> yeah. Since this patch touches phy/Kconfig (and Makefile) and there is one more
> PHY driver to be merged that also modifies Kconfig there might be conflicts. So
> thought I should be taking this patch?
> > 
> >> +static int bcm_kona_usb2_probe(struct platform_device *pdev)
> >> +{
> >> +	struct device *dev = &pdev->dev;
> >> +	struct bcm_kona_usb *phy;
> >> +	struct resource *res;
> >> +	struct phy *gphy;
> >> +	struct phy_provider *phy_provider;
> >> +
> >> +	phy = devm_kzalloc(dev, sizeof(*phy), GFP_KERNEL);
> >> +	if (!phy)
> >> +		return -ENOMEM;
> >> +
> >> +	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> >> +	phy->regs = devm_ioremap_resource(&pdev->dev, res);
> >> +	if (IS_ERR(phy->regs))
> >> +		return PTR_ERR(phy->regs);
> >> +
> >> +	platform_set_drvdata(pdev, phy);
> >> +
> >> +	phy_provider = devm_of_phy_provider_register(dev,
> >> +			of_phy_simple_xlate);
> >> +	if (IS_ERR(phy_provider))
> >> +		return PTR_ERR(phy_provider);
> >> +
> >> +	gphy = devm_phy_create(dev, &ops, NULL);
> >> +	if (IS_ERR(gphy))
> >> +		return PTR_ERR(gphy);
> >> +
> >> +	/* The Kona PHY supports an 8-bit wide UTMI interface */
> >> +	phy_set_bus_width(gphy, 8);
> >> +
> >> +	phy_set_drvdata(gphy, phy);
> > 
> > I think this set_drvdata() should be done before registering the
> > provider, no ?
> 
> hmm, right.

I sent a v8 series update that addresses this issue.

-Matt
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