linux-kernel - Re: [PATCH v11 2/3] power-domain: rockchip: add power doamin driver

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Date:	Thu, 13 Nov 2014 09:29:37 -0800
From:	Doug Anderson <dianders@...omium.org>
To:	Caesar Wang <caesar.wang@...k-chips.com>
Cc:	Linus Walleij <linus.walleij@...aro.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	Heiko Stuebner <heiko@...ech.de>,
	Russell King <linux@....linux.org.uk>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Grant Likely <grant.likely@...aro.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	Randy Dunlap <rdunlap@...radead.org>,
	"linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>,
	"open list:ARM/Rockchip SoC..." <linux-rockchip@...ts.infradead.org>,
	Ulf Hansson <ulf.hansson@...aro.org>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	ZhenFu Fang <fzf@...k-chips.com>,
	Eddie Cai <cf@...k-chips.com>,
	Jack Dai <jack.dai@...k-chips.com>,
	"jinkun.hong" <jinkun.hong@...k-chips.com>
Subject: Re: [PATCH v11 2/3] power-domain: rockchip: add power doamin driver

Hi,

On Wed, Nov 12, 2014 at 2:01 PM, Caesar Wang <caesar.wang@...k-chips.com> wrote:
> In order to meet high performance and low power requirements, a power
> management unit is designed or saving power when RK3288 in low power mode.
> The RK3288 PMU is dedicated for managing the power ot the whole chip.
>
> Signed-off-by: Jack Dai <jack.dai@...k-chips.com>
> Signed-off-by: jinkun.hong <jinkun.hong@...k-chips.com>
> Signed-off-by: Caesar Wang <caesar.wang@...k-chips.com>
>
> ---
>
> Changes in v11:
>     - fix pm_genpd_init(&pd->genpd, NULL, false);
>
> Changes in v10:
>     - this switches over domain infos to use masks instead of recomputing
>       them each time and also gets rid of custom domain translator and
>       uses standard onecell on.
>
> Changes in v9:
>     - fix v8 changes as follows:
>     - This reconciles the v2 and v7 code so that we power domain have
>       lists of clocks they toggle on and off during power transitions and
>       independently from power domains clocks we attach clocks to devices
>       comprising power domain and prepare them so they are turn on and off
>       by runtime PM.
>     - add rockchip_pm_add_one_domain() to control domains.
>     - add pd_start/pd_stop interface to control clocks
>
> Changes in v8:
>     - This reconciles the v2 and v7 code so that we power domain have
>       lists of clocks they toggle on and off during power transitions and
>       independently from power domains clocks we attach clocks to devices
>       comprising power domain and prepare them so they are turn on and off
>       by runtime PM.
>
> Changes in v7:
>     - Delete unused variables
>
> Changes in v6:
>     - delete pmu_lock
>     - modify dev_lock using mutex
>     - pm_clk_resume(pd->dev) change to pm_clk_resume(ed->dev)
>     - pm_clk_suspend(pd->dev) change to pm_clk_suspend(ed->dev)
>     - add devm_kfree(pd->dev, de) in rockchip_pm_domain_detach_dev
>
> Changes in v5:
>     - delete idle_lock
>     - add timeout in rockchip_pmu_set_idle_request()
>
> Changes in v4:
>     - use list storage dev
>
> Changes in v3:
>     - change use pm_clk_resume() and pm_clk_suspend()
>
> Changes in v2:
>     - remove the "pd->pd.of_node = np"
>
>  arch/arm/mach-rockchip/Kconfig            |   1 +
>  arch/arm/mach-rockchip/Makefile           |   1 +
>  arch/arm/mach-rockchip/pm_domains.c       | 471 ++++++++++++++++++++++++++++++
>  include/dt-bindings/power-domain/rk3288.h |  11 +
>  4 files changed, 484 insertions(+)

This was discussed offlist, but just to make sure it's also included here:

This patch will need to be spun to deal with the fact that (c16561e PM
/ Domains: Change prototype for the attach and detach callbacks) has
landed.

-Doug
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