linux-kernel - Re: [PATCH v6 01/11] drivers: usb: otg: add a new driver for omap usb2 phy

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Date:	Mon, 30 Jul 2012 15:16:32 +0530
From:	"ABRAHAM, KISHON VIJAY" <kishon@...com>
To:	Shubhrajyoti <shubhrajyoti@...com>
Cc:	grant.likely@...retlab.ca, rob.herring@...xeda.com,
	rob@...dley.net, linux@....linux.org.uk,
	gregkh@...uxfoundation.org, b-cousson@...com, rnayak@...com,
	tony@...mide.com, devicetree-discuss@...ts.ozlabs.org,
	linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, balbi@...com,
	linux-omap@...r.kernel.org, linux-usb@...r.kernel.org
Subject: Re: [PATCH v6 01/11] drivers: usb: otg: add a new driver for omap
 usb2 phy

Hi,

On Mon, Jul 30, 2012 at 3:07 PM, Shubhrajyoti <shubhrajyoti@...com> wrote:
> On Monday 30 July 2012 02:39 PM, Kishon Vijay Abraham I wrote:
>> +                     writel(~PHY_PD, phy->control_dev);
>> +                     /* XXX: add proper documentation for this delay */
>> +                     mdelay(200);
> Do you need this to be busy?
This might be called from interrupt context. This delay was initially
added in omap_phy_internal.c and I just inherited it.

Thanks
Kishon
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