linux-kernel - Re: [PATCH] dt-bindings: power: Introduce suspend states supported properties

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Message-ID: <20180912133228.GI5662@atomide.com>
Date:   Wed, 12 Sep 2018 06:32:28 -0700
From:   Tony Lindgren <tony@...mide.com>
To:     Sudeep Holla <sudeep.holla@....com>
Cc:     Keerthy <j-keerthy@...com>, mark.rutland@....com,
        robh+dt@...nel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-omap@...r.kernel.org,
        t-kristo@...com
Subject: Re: [PATCH] dt-bindings: power: Introduce suspend states supported
 properties

* Sudeep Holla <sudeep.holla@....com> [180912 11:41]:
> On 12/09/18 12:19, Keerthy wrote:
> > suspend to mem and suspend to disk are pretty generic states and i agree
> > implementation is platform dependent so why not have properties that
> > convey if they are supported?
> > 
> 
> We already have power domains and idle states for that. If you need to
> restrict few states on some platform for whatever reasons, just disable
> those states. I don't see the need to add any more bindings for the same.

Oh do you mean the "domain-idle-states" property as mentioned in the
Documentation/devicetree/bindings/power/power_domain.txt?

Yeah that should do and the DOMAIN_PWR_DN and DOMAIN_RET can be SoC
specific and then the board can select which ones to use depending on
how things are wired for GPIOs, memory, PMIC and so on.

Hmm I don't see any users for this binding though?

Regards,

Tony