linux-kernel - Re: [PATCH 0/7] ARM: davinci: add genpd support

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Message-ID: <4dbc57ec-3506-eb1d-e00d-adfe75c3b39b@lechnology.com>
Date:   Wed, 7 Feb 2018 16:43:50 -0600
From:   David Lechner <david@...hnology.com>
To:     Bartosz Golaszewski <brgl@...ev.pl>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Sekhar Nori <nsekhar@...com>,
        Kevin Hilman <khilman@...nel.org>,
        Russell King <linux@...linux.org.uk>
Cc:     devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        Bartosz Golaszewski <bgolaszewski@...libre.com>
Subject: Re: [PATCH 0/7] ARM: davinci: add genpd support

On 02/07/2018 07:45 AM, Bartosz Golaszewski wrote:
> From: Bartosz Golaszewski <bgolaszewski@...libre.com>
> 
> Hi Sekhar et al,
> 
> please take a look at the following patches. They add a simple genpd
> driver and use it in DT mode on da850 boards.
> 
> I was trying to use genpd in legacy mode too, but couldn't find neither
> any interfaces nor users that would do that. For now I added a check in
> arch/arm/mach-davinci/pm_domain.c that disables the clock pm setup if
> we're using genpd.
> 
> This series applies on top of and has been tested with David Lechner's
> for-bartosz branch. It fixes the clock look-up issues we faced with
> lcdc and emac.

I'm starting to think that it makes more sense to just make the PSC driver
a power-domain and reset provider rather than a clock provider. It is
unfortunate that genpd is DT only.