linux-kernel - Re: [PATCH 05/13] dt-bindings: cpufreq: qcom-nvmem: Support pstates provided by a power domain

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Message-ID: <20190724152656.GA10017@bogus>
Date:   Wed, 24 Jul 2019 09:26:56 -0600
From:   Rob Herring <robh@...nel.org>
To:     Niklas Cassel <niklas.cassel@...aro.org>
Cc:     Ilia Lin <ilia.lin@...nel.org>, Andy Gross <agross@...nel.org>,
        Viresh Kumar <vireshk@...nel.org>, Nishanth Menon <nm@...com>,
        Stephen Boyd <sboyd@...nel.org>, linux-arm-msm@...r.kernel.org,
        jorge.ramirez-ortiz@...aro.org, bjorn.andersson@...aro.org,
        ulf.hansson@...aro.org, Mark Rutland <mark.rutland@....com>,
        linux-pm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 05/13] dt-bindings: cpufreq: qcom-nvmem: Support pstates
 provided by a power domain

On Fri, Jul 05, 2019 at 11:57:16AM +0200, Niklas Cassel wrote:
> Some Qualcomm SoCs have support for Core Power Reduction (CPR).
> On these platforms, we need to attach to the power domain provider
> providing the performance states, so that the leaky device (the CPU)
> can configure the performance states (which represent different
> CPU clock frequencies).
> 
> Signed-off-by: Niklas Cassel <niklas.cassel@...aro.org>
> ---
>  .../bindings/opp/qcom-nvmem-cpufreq.txt       | 111 ++++++++++++++++++
>  1 file changed, 111 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/opp/qcom-nvmem-cpufreq.txt b/Documentation/devicetree/bindings/opp/qcom-nvmem-cpufreq.txt
> index c5ea8b90e35d..e19a95318e98 100644
> --- a/Documentation/devicetree/bindings/opp/qcom-nvmem-cpufreq.txt
> +++ b/Documentation/devicetree/bindings/opp/qcom-nvmem-cpufreq.txt
> @@ -23,6 +23,15 @@ In 'operating-points-v2' table:
>  
>  Optional properties:
>  --------------------
> +In 'cpus' nodes:

In 'cpus' node or 'cpu' nodes?

> +- power-domains: A phandle pointing to the PM domain specifier which provides
> +		the performance states available for active state management.
> +		Please refer to the power-domains bindings
> +		Documentation/devicetree/bindings/power/power_domain.txt
> +		and also examples below.
> +- power-domain-names: Should be
> +	- 'cpr' for qcs404.
> +
>  In 'operating-points-v2' table:
>  - nvmem-cells: A phandle pointing to a nvmem-cells node representing the
>  		efuse registers that has information about the