linux-kernel - Re: [RESEND, PATCH v4 2/2] dt-bindings: cpufreq: Document allwinner,sun50i-h6-operating-points

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Date:   Tue, 9 Jul 2019 08:31:53 -0600
From:   Rob Herring <robh@...nel.org>
To:     Yangtao Li <tiny.windzz@...il.com>
Cc:     vireshk@...nel.org, nm@...com, sboyd@...nel.org,
        robh+dt@...nel.org, mark.rutland@....com,
        maxime.ripard@...tlin.com, wens@...e.org, rjw@...ysocki.net,
        davem@...emloft.net, mchehab+samsung@...nel.org,
        gregkh@...uxfoundation.org, linus.walleij@...aro.org,
        nicolas.ferre@...rochip.com, paulmck@...ux.ibm.com,
        linux-pm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Yangtao Li <tiny.windzz@...il.com>
Subject: Re: [RESEND, PATCH v4 2/2] dt-bindings: cpufreq: Document
 allwinner,sun50i-h6-operating-points

On Wed, 12 Jun 2019 12:28:16 -0400, Yangtao Li wrote:
> Allwinner Process Voltage Scaling Tables defines the voltage and
> frequency value based on the speedbin blown in the efuse combination.
> The sunxi-cpufreq-nvmem driver reads the efuse value from the SoC to
> provide the OPP framework with required information.
> This is used to determine the voltage and frequency value for each
> OPP of operating-points-v2 table when it is parsed by the OPP framework.
> 
> The "allwinner,sun50i-h6-operating-points" DT extends the
> "operating-points-v2"
> with following parameters:
> - nvmem-cells (NVMEM area containig the speedbin information)
> - opp-microvolt-<name>: voltage in micro Volts.
>   At runtime, the platform can pick a <name> and matching
>   opp-microvolt-<name> property.
>                         HW:             <name>:
>                         sun50i-h6      speed0 speed1 speed2
> 
> Signed-off-by: Yangtao Li <tiny.windzz@...il.com>
> Acked-by: Maxime Ripard <maxime.ripard@...tlin.com>
> ---
>  .../bindings/opp/sun50i-nvmem-cpufreq.txt     | 167 ++++++++++++++++++
>  1 file changed, 167 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/opp/sun50i-nvmem-cpufreq.txt
> 

Reviewed-by: Rob Herring <robh@...nel.org>