linux-kernel - Re: [RFC PATCH 6/6] USB: MUSB: OMAP: get PHY by phandle for dt boot

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Date:	Mon, 21 Jan 2013 15:18:44 +0200
From:	Roger Quadros <rogerq@...com>
To:	Kishon Vijay Abraham I <kishon@...com>
CC:	<devicetree-discuss@...ts.ozlabs.org>, <linux-doc@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <linux-omap@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	<linux-usb@...r.kernel.org>, <linux-sh@...r.kernel.org>,
	<linuxppc-dev@...ts.ozlabs.org>, <balbi@...com>,
	<grant.likely@...retlab.ca>, <rob.herring@...xeda.com>,
	<rob@...dley.net>, <b-cousson@...com>, <tony@...mide.com>,
	<linux@....linux.org.uk>, <horms@...ge.net.au>,
	<magnus.damm@...il.com>, <cbou@...l.ru>, <dwmw2@...radead.org>,
	<alexander.shishkin@...ux.intel.com>, <gregkh@...uxfoundation.org>,
	<leoli@...escale.com>, <eric.y.miao@...il.com>,
	<haojian.zhuang@...il.com>, <stern@...land.harvard.edu>
Subject: Re: [RFC PATCH 6/6] USB: MUSB: OMAP: get PHY by phandle for dt boot

On 01/16/2013 05:01 PM, Kishon Vijay Abraham I wrote:
> The OMAP glue has been modified to get PHY by phandle for dt boot.
> 
> Signed-off-by: Kishon Vijay Abraham I <kishon@...com>
> ---
>  drivers/usb/musb/omap2430.c |    7 ++++++-
>  1 file changed, 6 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/usb/musb/omap2430.c b/drivers/usb/musb/omap2430.c
> index 3628a50..08709cf 100644
> --- a/drivers/usb/musb/omap2430.c
> +++ b/drivers/usb/musb/omap2430.c
> @@ -346,7 +346,12 @@ static int omap2430_musb_init(struct musb *musb)
>  	 * up through ULPI.  TWL4030-family PMICs include one,
>  	 * which needs a driver, drivers aren't always needed.
>  	 */
> -	musb->xceiv = devm_usb_get_phy(dev, 0);
> +	if (dev->parent->of_node)
> +		musb->xceiv = devm_usb_get_phy_by_phandle(dev->parent,
> +		    "usb_phy", 0);

Why dev->parent and not just dev?

> +	else
> +		musb->xceiv = devm_usb_get_phy(dev, 0);
> +
>  	if (IS_ERR_OR_NULL(musb->xceiv)) {
>  		pr_err("HS USB OTG: no transceiver configured\n");
>  		return -ENODEV;
> 

--
cheers,
-roger
--
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