linux-kernel - Re: [RFC 08/17] ARM: mvebu: remove custom .init

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Date:	Fri, 23 Aug 2013 14:13:29 +0200
From:	Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>
To:	Gregory CLEMENT <gregory.clement@...e-electrons.com>
CC:	Russell King <linux@....linux.org.uk>,
	Arnd Bergmann <arnd@...db.de>,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [RFC 08/17] ARM: mvebu: remove custom .init_time hook

On 08/23/13 13:39, Gregory CLEMENT wrote:
> On 23/08/2013 12:32, Sebastian Hesselbarth wrote:
>> On 08/23/13 12:06, Gregory CLEMENT wrote:
>>> On 20/08/2013 04:04, Sebastian Hesselbarth wrote:
>>>> With arch/arm calling of_clk_init(NULL) from time_init(), we can now
>>>> remove custom .init_time hooks.
>>>
>>> As a feared it won't work on Armada XP. You moved coherency_init(), and
>>> l2x0_of_init() in the init_machine hook. However init_machine is an
>>> arch_initcall, and as all the initcall it is called at the end of the
>>> do_basic_setup() which is called after smp_prepare_cpus(). The issue is
>>> that smp_prepare_cpus need coherency (and I think L2 cache) already enable.
>>
>> Ok, I see. I remember mvebu smp relies on mbus mappings also? Can you
>> try below as replacement for the mach-mvebu/armada-370-xp.c changes?
>>
>> It will move coherency_init(), l2x0_of_init(), and mvebu_mbus_dt_init()
>> to .init_early hook.
>>
>
> I can't test it, because I don't receive the patch 1 and 2 neither directly
> or through linux-arm-kernel (it should have been bounced), or even at
> https://github.com/shesselba/linux-dove.git
>
> If you don't want to send them again, could you at least push our branch on your
> github?

Gregory,

I pushed a branch containing the latest state to
https://github.com/shesselba/linux-dove.git arm-clk-of-init

It still contains the changes to drivers/clk.c, that will become
obsolete, if there are no objections against Stephen's tegra patch.

Sebastian

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