linux-kernel - Re: [PATCH 00/12] introduce support for early platform drivers

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Date:   Thu, 31 May 2018 07:16:45 -0700
From:   Tony Lindgren <tony@...mide.com>
To:     Geert Uytterhoeven <geert@...ux-m68k.org>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Rich Felker <dalias@...c.org>,
        Michael Turquette <mturquette@...libre.com>,
        Sekhar Nori <nsekhar@...com>,
        Frank Rowand <frowand.list@...il.com>,
        "open list:GENERIC INCLUDE/ASM HEADER FILES" 
        <linux-arch@...r.kernel.org>,
        Yoshinori Sato <ysato@...rs.sourceforge.jp>,
        Kevin Hilman <khilman@...nel.org>,
        Bartosz Golaszewski <brgl@...ev.pl>,
        "Rafael J . Wysocki" <rafael.j.wysocki@...el.com>,
        Magnus Damm <magnus.damm@...il.com>,
        Andy Shevchenko <andy.shevchenko@...il.com>,
        Jiri Slaby <jslaby@...e.com>,
        devicetree <devicetree@...r.kernel.org>,
        David Lechner <david@...hnology.com>,
        Arnd Bergmann <arnd@...db.de>,
        Marc Zyngier <marc.zyngier@....com>,
        Johan Hovold <johan@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        "moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE" 
        <linux-arm-kernel@...ts.infradead.org>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Stephen Boyd <sboyd@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Peter Rosin <peda@...ntia.se>
Subject: Re: [PATCH 00/12] introduce support for early platform drivers

* Geert Uytterhoeven <geert@...ux-m68k.org> [180531 06:45]:
> Yes, they should all be drivers.
> 
> Assuming clocksources, clockevents, or primary interrupt controllers are
> special, and thus forcing everyone to use OF_DECLARE for the whole
> subsystem, doesn't fly everywhere.
> 
> Clockevents and interrupt controllers can have a module clock.
> All three can be part of a PM Domain, which requires a struct device to
> be handled properly.

I agree it sure would be nice to have all these as drivers. I believe
SoC specific clockevent using SoC specific clocks is the reason why some
clocks cannot currently be drivers.

Regards,

Tony