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Re: [PATCH 01/18] regmap: mmio: Add function to attach a clock

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Hi Mark,

On Thu, Jul 13, 2017 at 05:01:42PM +0100, Mark Brown wrote:
> On Thu, Jul 13, 2017 at 04:12:56PM +0200, Maxime Ripard wrote:
> 
> > This might be problematic if the clock to enable is stored in another node.
> > Let's add a function that allows to attach a clock that has already been
> > retrieved to a regmap in order to fix this.
> 
> What is the use case for this?

This is useful when the clock you want to be handled by the regmap is
not described in the device node that probed the driver, but one of
its subnode, or an another node entirely.

We're in the latter case, where we have two controllers in the DT, but
are driven by the same driver. We'll create two regmaps, but one will
not have the proper of_node used to retrieve the clock.

Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com

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[PATCH 00/18] drm/sun4i: Allwinner MIPI-DSI support Maxime Ripard <maxime.ripard@free-electrons.com> - 2017-07-13 16:20 +0200
  [PATCH 06/18] drm/sun4i: tcon: Don't rely on encoders to enable the TCON Maxime Ripard <maxime.ripard@free-electrons.com> - 2017-07-13 16:20 +0200
    Re: [PATCH 06/18] drm/sun4i: tcon: Don't rely on encoders to enable  the TCON Chen-Yu Tsai <wens@csie.org> - 2017-07-14 05:50 +0200
  [PATCH 04/18] drm/sun4i: Remove useless atomic_check Maxime Ripard <maxime.ripard@free-electrons.com> - 2017-07-13 16:20 +0200
    Re: [PATCH 04/18] drm/sun4i: Remove useless atomic_check Chen-Yu Tsai <wens@csie.org> - 2017-07-14 05:20 +0200
      Re: [PATCH 04/18] drm/sun4i: Remove useless atomic_check Maxime Ripard <maxime.ripard@free-electrons.com> - 2017-07-17 10:50 +0200
  [PATCH 15/18] drm/panel: Add Huarui LHR050H41 panel driver Maxime Ripard <maxime.ripard@free-electrons.com> - 2017-07-13 16:20 +0200
    Re: [PATCH 15/18] drm/panel: Add Huarui LHR050H41 panel driver Andrzej Hajda <a.hajda@samsung.com> - 2017-07-14 11:30 +0200
  [PATCH 08/18] drm/sun4i: tcon: Add TRI finish interrupt for vblank Maxime Ripard <maxime.ripard@free-electrons.com> - 2017-07-13 16:20 +0200
    Re: [PATCH 08/18] drm/sun4i: tcon: Add TRI finish interrupt for vblank Chen-Yu Tsai <wens@csie.org> - 2017-07-14 06:00 +0200
  [PATCH 07/18] drm/sun4i: tcon: Don't rely on encoders to set the TCON mode Maxime Ripard <maxime.ripard@free-electrons.com> - 2017-07-13 16:20 +0200
    Re: [PATCH 07/18] drm/sun4i: tcon: Don't rely on encoders to set the  TCON mode Chen-Yu Tsai <wens@csie.org> - 2017-07-14 06:00 +0200
  [PATCH 10/18] drm/sun4i: tcon: Move out the tcon0 common setup Maxime Ripard <maxime.ripard@free-electrons.com> - 2017-07-13 16:20 +0200
    Re: [PATCH 10/18] drm/sun4i: tcon: Move out the tcon0 common setup kbuild test robot <lkp@intel.com> - 2017-07-14 12:00 +0200
    Re: [PATCH 10/18] drm/sun4i: tcon: Move out the tcon0 common setup Chen-Yu Tsai <wens@csie.org> - 2017-07-18 05:50 +0200
  [PATCH 16/18] arm: dts: sun8i: a33: Add the DSI-related nodes Maxime Ripard <maxime.ripard@free-electrons.com> - 2017-07-13 16:20 +0200
  [PATCH 09/18] drm/sun4i: tcon: Adjust dotclock dividers range Maxime Ripard <maxime.ripard@free-electrons.com> - 2017-07-13 16:20 +0200
    Re: [PATCH 09/18] drm/sun4i: tcon: Adjust dotclock dividers range Chen-Yu Tsai <wens@csie.org> - 2017-07-14 06:20 +0200
  [PATCH 17/18] arm: dts: sun8i: Add BananaPI M2-Magic DTS Maxime Ripard <maxime.ripard@free-electrons.com> - 2017-07-13 16:20 +0200
    Re: [PATCH 17/18] arm: dts: sun8i: Add BananaPI M2-Magic DTS Chen-Yu Tsai <wens@csie.org> - 2017-07-14 06:50 +0200
      Re: [PATCH 17/18] arm: dts: sun8i: Add BananaPI M2-Magic DTS Maxime Ripard <maxime.ripard@free-electrons.com> - 2017-07-17 11:10 +0200
  [PATCH 13/18] dt-bindings: vendor: Add Huarui Lighting Maxime Ripard <maxime.ripard@free-electrons.com> - 2017-07-13 16:20 +0200
    Re: [PATCH 13/18] dt-bindings: vendor: Add Huarui Lighting Chen-Yu Tsai <wens@csie.org> - 2017-07-14 10:00 +0200
  [PATCH 01/18] regmap: mmio: Add function to attach a clock Maxime Ripard <maxime.ripard@free-electrons.com> - 2017-07-13 16:20 +0200
    Re: [PATCH 01/18] regmap: mmio: Add function to attach a clock Mark Brown <broonie@kernel.org> - 2017-07-13 18:10 +0200
      Re: [PATCH 01/18] regmap: mmio: Add function to attach a clock Maxime Ripard <maxime.ripard@free-electrons.com> - 2017-07-17 11:10 +0200
  [PATCH 02/18] drm/sun4i: Add if statement instead of depends on Maxime Ripard <maxime.ripard@free-electrons.com> - 2017-07-13 16:20 +0200
    Re: [PATCH 02/18] drm/sun4i: Add if statement instead of depends on Chen-Yu Tsai <wens@csie.org> - 2017-07-14 05:10 +0200
      Re: [PATCH 02/18] drm/sun4i: Add if statement instead of depends on Maxime Ripard <maxime.ripard@free-electrons.com> - 2017-07-17 10:50 +0200
  [PATCH 18/18] [DO NOT MERGE] arm: dts: sun8i: bpi-m2m: Add DSI display Maxime Ripard <maxime.ripard@free-electrons.com> - 2017-07-13 16:20 +0200
  [PATCH 03/18] drm/sun4i: Realign Makefile padding and reorder it Maxime Ripard <maxime.ripard@free-electrons.com> - 2017-07-13 16:20 +0200
    Re: [PATCH 03/18] drm/sun4i: Realign Makefile padding and reorder it Chen-Yu Tsai <wens@csie.org> - 2017-07-14 05:20 +0200

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