linux-kernel - Re: [PATCHv5 7/8] ARM: tegra: Add board data and 2D clocks

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Date:	Wed, 16 Jan 2013 08:09:54 +0200
From:	Terje Bergström <tbergstrom@...dia.com>
To:	Stephen Warren <swarren@...dotorg.org>
CC:	Arto Merilainen <amerilainen@...dia.com>,
	"airlied@...ux.ie" <airlied@...ux.ie>,
	"thierry.reding@...onic-design.de" <thierry.reding@...onic-design.de>,
	"dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
	"linux-tegra@...r.kernel.org" <linux-tegra@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCHv5 7/8] ARM: tegra: Add board data and 2D clocks

On 15.01.2013 20:44, Stephen Warren wrote:
>> diff --git a/arch/arm/mach-tegra/board-dt-tegra20.c b/arch/arm/mach-tegra/board-dt-tegra20.c
> 
>> +	OF_DEV_AUXDATA("nvidia,tegra20-gr2d", 0x54140000, "gr2d", NULL),
> 
> I assume the only reason to add AUXDATA is to give the device a specific
> name, which will then match the driver name in the clock driver:
> 
>> -	CLK_DUPLICATE("2d",	"tegra_grhost",	"gr2d"),
>> +	CLK_DUPLICATE("2d",	"gr2d",	"gr2d"),
> 
> If so, this shouldn't be needed once the common clock framework patches
> are applied, since all device clocks will be retrieved from device tree,
> and hence the device name will be irrelevant; the phandle in device tree
> is all that will matter.

Yes, clock binding is the only reason for the OF_DEV_AUXDATA line. I'll
need to look into Prashant's clock changes, but I assume it's going to
be a trivial change to host1x patches.

Thanks for the heads-up.

Terje

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