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From: Mark Brown <broonie-yzvPICuk2AATkU/dhu1WVueM+bqZidxxQQ4Iyu8u01E@public.gmane.org>
To: Sebastian Andrzej Siewior
	<bigeasy-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org>
Cc: David Brownell
	<dbrownell-Rn4VEauK+AKRv+LV9MX5uipxlwaOVQ5f@public.gmane.org>,
	eric.y.miao-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org,
	Haojian Zhuang
	<haojian.zhuang-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
	linux-lFZ/pmaqli7XmaaqVzeoHQ@public.gmane.org,
	sodaville-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org,
	linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
	Dirk Brandewie
	<dirk.brandewie-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
	spi-devel-general-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org,
	tglx-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org,
	drwyrm-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org
Subject: Re: [PATCH 1/9] spi/pxa2xx: don't use subys initcall for driver init
Date: Wed, 24 Nov 2010 14:16:23 +0000	[thread overview]
Message-ID: <20101124141623.GH24970@rakim.wolfsonmicro.main> (raw)
In-Reply-To: <4CED1C95.8070300-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org>

On Wed, Nov 24, 2010 at 03:09:25PM +0100, Sebastian Andrzej Siewior wrote:

> I've been pointed out to this commit but I don't understand _why_.
> The part I don't get is "so it can be used with cpufreq". Is it
> refered to a driver or the subsystem as it?

We need the regulators for the CPU rails to start before the cpufreq
driver starts so cpufreq can talk to them, and since the regulators may
be SPI attached this means we also need the SPI controller to start
before cpufreq.  cpufreq starts at vanilla init time.

There's an approach being looked at for handling this for devices but
for deviceless stuff like cpufreq we've nothing.

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  parent reply	other threads:[~2010-11-24 14:16 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-11-24 11:13 SPI support for Sodaville Sebastian Andrzej Siewior
     [not found] ` <1290597207-29838-1-git-send-email-bigeasy-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org>
2010-11-24 11:13   ` [PATCH 1/9] spi/pxa2xx: don't use subys initcall for driver init Sebastian Andrzej Siewior
2010-11-24 13:18     ` Antonio Ospite
     [not found]     ` <1290597207-29838-2-git-send-email-bigeasy-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org>
2010-11-24 13:54       ` Haojian Zhuang
     [not found]         ` <AANLkTin4vh85XRkEd7YocCmKngViR_qZDe7z1b4JXyd--JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2010-11-24 14:09           ` Sebastian Andrzej Siewior
     [not found]             ` <4CED1C95.8070300-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org>
2010-11-24 14:14               ` Haojian Zhuang
2010-11-24 14:16               ` Mark Brown [this message]
     [not found]                 ` <20101124141623.GH24970-HF5t3jzXg/6ND3a5+9QAFujbO/Zr0HzV@public.gmane.org>
2010-11-24 15:30                   ` Grant Likely
     [not found]                     ` <AANLkTikC+XW7JtJO77vQL99=d9FKpO2tLtkCuxE57j7o-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2010-11-24 15:43                       ` Mark Brown
2010-11-24 15:39                 ` Sebastian Andrzej Siewior
     [not found]                   ` <4CED3199.2040700-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org>
2010-11-25 23:54                     ` Russell King - ARM Linux
     [not found]                       ` <20101125235415.GA9310-l+eeeJia6m9vn6HldHNs0ANdhmdF6hFW@public.gmane.org>
2010-11-26  1:14                         ` Grant Likely
     [not found]                           ` <AANLkTi=tbiYCvTKH_wDDE0QuFpoBMnw-ZjF826VupnRA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2010-11-26  9:08                             ` Russell King - ARM Linux
2010-11-26 10:50                         ` [sodaville] " Sebastian Andrzej Siewior
2010-11-26 11:06                           ` Russell King - ARM Linux
     [not found]                             ` <20101126110605.GI9310-l+eeeJia6m9vn6HldHNs0ANdhmdF6hFW@public.gmane.org>
2010-11-26 13:29                               ` Sebastian Andrzej Siewior
2010-11-24 11:13   ` [PATCH 2/9] spi/pxa2xx: add support for shared IRQ handler Sebastian Andrzej Siewior
2010-11-24 11:13   ` [PATCH 3/9] spi/pxa2xx: Use define for SSSR_TFL_MASK instead of plain numbers Sebastian Andrzej Siewior
2010-11-24 11:13   ` [PATCH 4/9] arm/pxa2xx: reorgazine SSP and SPI header files Sebastian Andrzej Siewior
     [not found]     ` <1290597207-29838-5-git-send-email-bigeasy-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org>
2010-11-24 14:03       ` Haojian Zhuang
     [not found]         ` <AANLkTinBFQZkuH4haeQAZQv8p0WZN5uh4xJj53sjUGTt-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2010-11-24 14:13           ` Sebastian Andrzej Siewior
2010-11-24 11:13   ` [PATCH 5/9] spi/pxa2xx: Add CE4100 support Sebastian Andrzej Siewior
2010-11-24 11:13   ` [PATCH 6/9] spi/pxa2xx: Consider CE4100's FIFO depth Sebastian Andrzej Siewior
2010-11-24 11:13   ` [PATCH 7/9] spi/pxa2xx: Add chipselect support for Sodaville Sebastian Andrzej Siewior
2010-11-24 11:13   ` [PATCH 8/9] spi/pxa2xx: Modify RX-Tresh instead of busy-loop for the remaining RX bytes Sebastian Andrzej Siewior
2010-11-24 11:13   ` [PATCH 9/9] spi/pxa2xx: pass of_node to spi device and set a parent device Sebastian Andrzej Siewior

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