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From: Arnd Bergmann <arnd-r2nGTMty4D4@public.gmane.org>
To: Eric Anholt <eric-WhKQ6XTQaPysTnJN9+BGXg@public.gmane.org>
Cc: linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
	linux-rpi-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
	Stephen Warren <swarren-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>,
	Lee Jones <lee-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
	devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: [PATCH 5/9] ARM: BCM2836: Add io map initialization for bcm2836.
Date: Fri, 24 Apr 2015 09:16:12 +0200	[thread overview]
Message-ID: <3157838.P6rILgE4M2@wuerfel> (raw)
In-Reply-To: <1429639796-2169-6-git-send-email-eric-WhKQ6XTQaPysTnJN9+BGXg@public.gmane.org>

On Tuesday 21 April 2015 11:09:52 Eric Anholt wrote:
> +
> +DT_MACHINE_START(BCM2836, "BCM2836")
> +       .map_io = bcm2836_map_io,
> +       .init_irq = irqchip_init,
> +       .init_machine = bcm2835_init,
> +       .restart = bcm2835_restart,
> +       .dt_compat = bcm2836_compat
> +MACHINE_END

I've just looked at the other callbacks you have here, and I think
it would be easy enough to remove them as well:

- .init_irq is already pointless, you can just remove the line here
  without any effect

- bcm2835_restart can be moved to the drivers/watchdog/bcm2835_wdt.c
  driver, which already knows the registers. Just use
  register_restart_handler() in its probe function, and perhaps add
  a 'select' statement to ensure that the driver is included in kernel
  builds

- I'm not completely sure about the plans for the clock handler, but
  no proper clock driver has surfaced so far, and the clocks could just
  all be declared in DT as fixed rate clocks.

  Is anyone working on a proper clk driver here?

- once bcm2835_restart is gone from bcm2835.c and the clocks are handled
  in DT, the bcm2835_init() function can be removed as well.

	Arnd

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  parent reply	other threads:[~2015-04-24  7:16 UTC|newest]

Thread overview: 45+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-04-21 18:09 BCM2836 (Raspberry Pi 2) port Eric Anholt
     [not found] ` <1429639796-2169-1-git-send-email-eric-WhKQ6XTQaPysTnJN9+BGXg@public.gmane.org>
2015-04-21 18:09   ` [PATCH 1/9] dt-bindings: Add root properties for Raspberry Pi 2 Eric Anholt
     [not found]     ` <1429639796-2169-2-git-send-email-eric-WhKQ6XTQaPysTnJN9+BGXg@public.gmane.org>
2015-04-24  4:27       ` Stephen Warren
2015-04-21 18:09   ` [PATCH 2/9] ARM: BCM2835: Split peripheral definitions off to a common include Eric Anholt
     [not found]     ` <1429639796-2169-3-git-send-email-eric-WhKQ6XTQaPysTnJN9+BGXg@public.gmane.org>
2015-04-24  4:28       ` Stephen Warren
2015-04-21 18:09   ` [PATCH 3/9] ARM: Make a copy of the 2835 dts for the 2836 Eric Anholt
     [not found]     ` <1429639796-2169-4-git-send-email-eric-WhKQ6XTQaPysTnJN9+BGXg@public.gmane.org>
2015-04-24  4:35       ` Stephen Warren
2015-04-21 18:09   ` [PATCH 4/9] ARM: Update the device trees for 2836 Eric Anholt
     [not found]     ` <1429639796-2169-5-git-send-email-eric-WhKQ6XTQaPysTnJN9+BGXg@public.gmane.org>
2015-04-24  4:36       ` Stephen Warren
2015-04-21 18:09   ` [PATCH 5/9] ARM: BCM2836: Add io map initialization for bcm2836 Eric Anholt
     [not found]     ` <1429639796-2169-6-git-send-email-eric-WhKQ6XTQaPysTnJN9+BGXg@public.gmane.org>
2015-04-21 18:53       ` Arnd Bergmann
2015-04-21 20:37         ` Eric Anholt
     [not found]           ` <87oamh9q12.fsf-omZaPlIz5HhaEpDpdNBo/KxOck334EZe@public.gmane.org>
2015-04-21 21:11             ` Arnd Bergmann
2015-04-21 23:02               ` Eric Anholt
     [not found]                 ` <87bnihhypw.fsf-omZaPlIz5HhaEpDpdNBo/KxOck334EZe@public.gmane.org>
2015-04-22  7:22                   ` Arnd Bergmann
2015-04-24  7:16       ` Arnd Bergmann [this message]
2015-04-21 18:09   ` [PATCH 6/9] ARM: Make a Kconfig option for shared BCM2835/BCM2836 code Eric Anholt
2015-04-21 18:09   ` [PATCH 7/9] ARM: Add Kconfig support for bcm2836 Eric Anholt
     [not found]     ` <1429639796-2169-8-git-send-email-eric-WhKQ6XTQaPysTnJN9+BGXg@public.gmane.org>
2015-04-21 18:59       ` Arnd Bergmann
2015-04-21 20:38         ` Eric Anholt
     [not found]           ` <87lhhl9pzf.fsf-omZaPlIz5HhaEpDpdNBo/KxOck334EZe@public.gmane.org>
2015-04-24  3:30             ` Stephen Warren
2015-04-21 18:09   ` [PATCH 8/9] ARM: Add MAINTAINERS for 2836 Eric Anholt
     [not found]     ` <1429639796-2169-9-git-send-email-eric-WhKQ6XTQaPysTnJN9+BGXg@public.gmane.org>
2015-04-24  4:38       ` Stephen Warren
     [not found]         ` <5539C8C9.1010705-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2015-04-24 17:03           ` Eric Anholt
2015-04-21 18:09   ` [PATCH 9/9] ARM: BCM283x: Register fixed clocks for uart in the DT Eric Anholt
     [not found]     ` <1429639796-2169-10-git-send-email-eric-WhKQ6XTQaPysTnJN9+BGXg@public.gmane.org>
2015-04-24  4:44       ` Stephen Warren
     [not found]         ` <5539CA1A.1040009-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2015-04-24 17:06           ` Eric Anholt
     [not found]             ` <87vbglwj5c.fsf-omZaPlIz5HhaEpDpdNBo/KxOck334EZe@public.gmane.org>
2015-04-25  4:23               ` Stephen Warren
2015-04-24  4:25   ` BCM2836 (Raspberry Pi 2) port Stephen Warren
     [not found]     ` <5539C5A4.5070409-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2015-04-24 18:41       ` Eric Anholt
     [not found]         ` <87pp6tweql.fsf-omZaPlIz5HhaEpDpdNBo/KxOck334EZe@public.gmane.org>
2015-04-24 18:57           ` Stephen Warren
     [not found]             ` <553A9201.3080308-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2015-04-27 17:19               ` Eric Anholt
2015-05-08 16:14       ` Alexander Stein
2015-05-12  2:36         ` Stephen Warren
     [not found]           ` <55516738.306-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2015-05-12 15:39             ` Alexander Stein
2015-05-12 16:03               ` Stephen Warren
     [not found]                 ` <55522468.3050606-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2015-05-12 17:32                   ` Eric Anholt
     [not found]                     ` <87d2254s6y.fsf-omZaPlIz5HhaEpDpdNBo/KxOck334EZe@public.gmane.org>
2015-05-12 22:03                       ` Stephen Warren
     [not found]                         ` <555278BA.50903-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2015-05-13 17:46                           ` Eric Anholt
     [not found]                             ` <87wq0c4bgv.fsf-omZaPlIz5HhaEpDpdNBo/KxOck334EZe@public.gmane.org>
2015-05-13 18:32                               ` Stephen Warren
     [not found]                                 ` <555398DB.8050206-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2015-05-13 18:59                                   ` Eric Anholt
2015-04-29  2:38   ` Stephen Warren
     [not found]     ` <5540443C.8070604-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2015-04-29  3:41       ` Florian Fainelli
2015-05-06 18:51       ` Eric Anholt
     [not found]         ` <87a8xh1qve.fsf-omZaPlIz5HhaEpDpdNBo/KxOck334EZe@public.gmane.org>
2015-05-06 19:05           ` Arnd Bergmann

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