linux-kernel - Re: [PATCHv5 03/15] hwspinlock/core: maintain a list of registered hwspinlock banks

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Date:	Tue, 8 Jul 2014 10:22:38 -0500
From:	Suman Anna <s-anna@...com>
To:	Ohad Ben-Cohen <ohad@...ery.com>
CC:	Mark Rutland <mark.rutland@....com>,
	Kumar Gala <galak@...eaurora.org>,
	Tony Lindgren <tony@...mide.com>,
	Josh Cartwright <joshc@...eaurora.org>,
	Bjorn Andersson <bjorn@...o.se>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-omap@...r.kernel.org" <linux-omap@...r.kernel.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	linux-arm <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCHv5 03/15] hwspinlock/core: maintain a list of registered
 hwspinlock banks

Hi Ohad,

On 07/04/2014 12:01 AM, Ohad Ben-Cohen wrote:
> Hi Suman,
> 
> On Thu, Jul 3, 2014 at 8:28 PM, Suman Anna <s-anna@...com> wrote:
>> OK, but we would still require this function to lookup the registered
>> device from the controller-phandle to retrieve the base_id.
> 
> Can we retrieve the base_id from the parent DT node itself?

Yeah, it is possible using the of_hwspin_lock_get_base_id function added
in Patch8, once we convert the phandle to a device node. The platform
implementations would be using this function during the registration
phase to register the base id, and we have to do the DT parse/lookup
again in the core.

regards
Suman
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