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From: Carlo Caione <carlo-KA+7E9HrN00dnm+yROfE0A@public.gmane.org>
To: Philipp Zabel <p.zabel-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>
Cc: grant.likely-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org,
	robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
	linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
	devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	b.galvani-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org,
	jerry.cao-LpR1jeaWuhtBDgjK7y7TUQ@public.gmane.org,
	victor.wan-LpR1jeaWuhtBDgjK7y7TUQ@public.gmane.org,
	maxime.ripard-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org
Subject: Re: [PATCH v3 1/3] ARM: meson: reset: Add reset controller for MesonX SoCs
Date: Wed, 22 Oct 2014 11:52:40 +0200	[thread overview]
Message-ID: <20141022095240.GA22342@carlo-MacBookPro> (raw)
In-Reply-To: <1413819611.3107.6.camel-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>

On lun, ott 20, 2014 at 05:40:11 +0200, Philipp Zabel wrote:
> Am Montag, den 20.10.2014, 13:19 +0200 schrieb Carlo Caione:
> > Hi Philipp,
> > from the documentation and the sources I have, it seems that in the register
> > together with the bits for resetting the ICs there are also bits for turning
> > the ICs on and off. I really wanted to avoid create a new of_xlate function
> > just to map the reset IDs to the correct bit in the register so I left the
> > nr_resets to BITS_PER_LONG and I'm using the default of_xlate.
> > This way I can also avoid to use obscure reset IDs to be remapped when I can
> > use directly the bit number in the register as reset ID.
> 
> I'm fine with reusing of_reset_simple_xlate and using the bit offsets as
> reset control number. Do you already know what abstraction you'll choose
> for the IC enable bits? (Are those clock gates, or maybe power domains?)
> Hopefully the documentation you obtained will help to decide.

Those are clock gates actually. Arnd suggested to add a driver for the
entire block (resets and clock gates) so probably I need to dig deeper
in the CCF.

-- 
Carlo Caione
--
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  parent reply	other threads:[~2014-10-22  9:52 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-10-20 11:19 [PATCH v3 0/3] ARM: meson: Add reset controller Carlo Caione
     [not found] ` <1413803985-8363-1-git-send-email-carlo-KA+7E9HrN00dnm+yROfE0A@public.gmane.org>
2014-10-20 11:19   ` [PATCH v3 1/3] ARM: meson: reset: Add reset controller for MesonX SoCs Carlo Caione
     [not found]     ` <1413803985-8363-2-git-send-email-carlo-KA+7E9HrN00dnm+yROfE0A@public.gmane.org>
2014-10-20 15:40       ` Philipp Zabel
     [not found]         ` <1413819611.3107.6.camel-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>
2014-10-22  9:52           ` Carlo Caione [this message]
2014-10-20 11:19   ` [PATCH v3 2/3] ARM: meson: DTSI: Enable reset controller Carlo Caione
2014-10-20 11:19   ` [PATCH v3 3/3] ARM: meson: docs: Add docs for MesonX " Carlo Caione
2014-10-20 12:01   ` [PATCH v3 0/3] ARM: meson: Add " Carlo Caione

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