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From: arnd@arndb.de (Arnd Bergmann)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] ARM: SPEAr600: Add device-tree support to SPEAr600 boards
Date: Wed, 28 Mar 2012 08:13:49 +0000	[thread overview]
Message-ID: <201203280813.49760.arnd@arndb.de> (raw)
In-Reply-To: <4F729B99.4020909@st.com>

On Wednesday 28 March 2012, Viresh Kumar wrote:
> 
> On 3/27/2012 7:29 PM, Arnd Bergmann wrote:
> > That would be even better. I think we should generally try do initialization
> > as late as possible, ideally from initcalls. The init_early() function should
> > only be used for code that absolutely has to be run from setup_arch() and
> > no later, while the map_io() function should ideally only be used to set up
> > the static mappings and nothing else.
> 
> I remember now why we do it in map_io().
> Timers need clock support and they are up before machine_init() is called.

I don't know what others do to get around this, this must be a fairly
common dependency, but there is no need to worry about it now. It might
all change if you device to port it to the common clk infrastructure.
 
> So, i believe i must have DT_MACHINE_START per SoC.

Ok.

> I will post V2 for 3xx DT support today, but can i have initial level of review
> from you, so that i can fixup minor issues in V2 only?

That's ok, yes.

	arnd

WARNING: multiple messages have this Message-ID (diff)
From: Arnd Bergmann <arnd-r2nGTMty4D4@public.gmane.org>
To: Viresh Kumar <viresh.kumar-qxv4g6HH51o@public.gmane.org>
Cc: spear-devel <spear-devel-nkJGhpqTU55BDgjK7y7TUQ@public.gmane.org>,
	Stefan Roese <sr-ynQEQJNshbs@public.gmane.org>,
	viresh kumar
	<viresh.linux-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
	"linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org"
	<linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org>,
	"devicetree-discuss-mnsaURCQ41sdnm+yROfE0A@public.gmane.org"
	<devicetree-discuss-mnsaURCQ41sdnm+yROfE0A@public.gmane.org>
Subject: Re: [PATCH] ARM: SPEAr600: Add device-tree support to SPEAr600 boards
Date: Wed, 28 Mar 2012 08:13:49 +0000	[thread overview]
Message-ID: <201203280813.49760.arnd@arndb.de> (raw)
In-Reply-To: <4F729B99.4020909-qxv4g6HH51o@public.gmane.org>

On Wednesday 28 March 2012, Viresh Kumar wrote:
> 
> On 3/27/2012 7:29 PM, Arnd Bergmann wrote:
> > That would be even better. I think we should generally try do initialization
> > as late as possible, ideally from initcalls. The init_early() function should
> > only be used for code that absolutely has to be run from setup_arch() and
> > no later, while the map_io() function should ideally only be used to set up
> > the static mappings and nothing else.
> 
> I remember now why we do it in map_io().
> Timers need clock support and they are up before machine_init() is called.

I don't know what others do to get around this, this must be a fairly
common dependency, but there is no need to worry about it now. It might
all change if you device to port it to the common clk infrastructure.
 
> So, i believe i must have DT_MACHINE_START per SoC.

Ok.

> I will post V2 for 3xx DT support today, but can i have initial level of review
> from you, so that i can fixup minor issues in V2 only?

That's ok, yes.

	arnd

  reply	other threads:[~2012-03-28  8:13 UTC|newest]

Thread overview: 80+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-03-13 14:47 [PATCH] ARM: SPEAr600: Add device-tree support to SPEAr600 boards Stefan Roese
2012-03-13 14:47 ` Stefan Roese
2012-03-13 16:44 ` Arnd Bergmann
2012-03-13 16:44   ` Arnd Bergmann
2012-03-14  7:08   ` Viresh Kumar
2012-03-14  7:08     ` Viresh Kumar
2012-03-14  9:58     ` Arnd Bergmann
2012-03-14  9:58       ` Arnd Bergmann
2012-03-14 10:02       ` Viresh Kumar
2012-03-14 10:02         ` Viresh Kumar
2012-03-14  7:40   ` Stefan Roese
2012-03-14  7:40     ` Stefan Roese
2012-03-14  9:48     ` Arnd Bergmann
2012-03-14  9:48       ` Arnd Bergmann
2012-03-14 10:36       ` Stefan Roese
2012-03-14 10:36         ` Stefan Roese
2012-03-14 13:27         ` Arnd Bergmann
2012-03-14 13:27           ` Arnd Bergmann
2012-03-14 13:43           ` Stefan Roese
2012-03-14 13:43             ` Stefan Roese
2012-03-14 14:09             ` Arnd Bergmann
2012-03-14 14:09               ` Arnd Bergmann
2012-03-14 13:44           ` Rob Herring
2012-03-14 13:44             ` Rob Herring
2012-03-14  7:05 ` Viresh Kumar
2012-03-14  7:05   ` Viresh Kumar
2012-03-14  7:20   ` Stefan Roese
2012-03-14  7:20     ` Stefan Roese
2012-03-15  8:48   ` Stefan Roese
2012-03-15  8:48     ` Stefan Roese
2012-03-15  9:00     ` Viresh Kumar
2012-03-15  9:00       ` Viresh Kumar
2012-03-15 10:38       ` Stefan Roese
2012-03-15 10:38         ` Stefan Roese
2012-03-15 10:40         ` Viresh Kumar
2012-03-15 10:40           ` Viresh Kumar
2012-03-15 13:39         ` Arnd Bergmann
2012-03-15 13:39           ` Arnd Bergmann
2012-03-21 11:32           ` Viresh Kumar
2012-03-21 11:32             ` Viresh Kumar
2012-03-21 12:36             ` Arnd Bergmann
2012-03-21 12:36               ` Arnd Bergmann
2012-03-21 13:28               ` viresh kumar
2012-03-21 13:28                 ` viresh kumar
2012-03-21 14:04                 ` Arnd Bergmann
2012-03-21 14:04                   ` Arnd Bergmann
2012-03-21 14:18                   ` viresh kumar
2012-03-21 14:18                     ` viresh kumar
2012-03-21 14:42                     ` Arnd Bergmann
2012-03-21 14:42                       ` Arnd Bergmann
2012-03-21 18:26                   ` Arnd Bergmann
2012-03-21 18:26                     ` Arnd Bergmann
2012-03-22  0:45                     ` viresh kumar
2012-03-22  0:45                       ` viresh kumar
2012-03-22  8:10                       ` Arnd Bergmann
2012-03-22  8:10                         ` Arnd Bergmann
     [not found]                         ` <201203220810.00628.arnd-r2nGTMty4D4@public.gmane.org>
2012-03-22  8:51                           ` viresh kumar
     [not found]               ` <201203211236.37891.arnd-r2nGTMty4D4@public.gmane.org>
2012-03-22 13:46                 ` viresh kumar
2012-03-22 14:20                   ` Arnd Bergmann
2012-03-22 14:20                     ` Arnd Bergmann
     [not found]                     ` <201203221420.10127.arnd-r2nGTMty4D4@public.gmane.org>
2012-03-22 14:53                       ` viresh kumar
2012-03-27 10:27                     ` Viresh Kumar
2012-03-27 10:27                       ` Viresh Kumar
2012-03-27 11:15                       ` Arnd Bergmann
2012-03-27 11:15                         ` Arnd Bergmann
2012-03-27 11:27                         ` Viresh Kumar
2012-03-27 11:27                           ` Viresh Kumar
2012-03-27 11:45                           ` Viresh Kumar
2012-03-27 11:45                             ` Viresh Kumar
2012-03-27 11:59                           ` Arnd Bergmann
2012-03-27 11:59                             ` Arnd Bergmann
     [not found]                             ` <201203271159.35306.arnd-r2nGTMty4D4@public.gmane.org>
2012-03-27 13:44                               ` viresh kumar
2012-03-27 13:59                                 ` Arnd Bergmann
2012-03-27 13:59                                   ` Arnd Bergmann
2012-03-28  5:03                                   ` Viresh Kumar
2012-03-28  5:03                                     ` Viresh Kumar
2012-03-28  8:13                                     ` Arnd Bergmann [this message]
2012-03-28  8:13                                       ` Arnd Bergmann
2012-03-14  8:48 ` Jean-Christophe PLAGNIOL-VILLARD
2012-03-14  8:48   ` Jean-Christophe PLAGNIOL-VILLARD

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