On Tue, Feb 4, 2014 at 3:41 AM, Thomas Abraham <ta.omasab@xxxxxxxxx> wrote:
> From: Thomas Abraham <thomas.ab@xxxxxxxxxxx>
>
> Certain CPUs or devices can support optional boost operating modes. Add a new
> binding to list OPPs to be additionally made available in boost operating modes.
>
> Cc: Nishanth Menon <nm@xxxxxx>
> Cc: Lukasz Majewski <l.majewski@xxxxxxxxxxx>
> Cc: Rob Herring <robh+dt@xxxxxxxxxx>
> Cc: Pawel Moll <pawel.moll@xxxxxxx>
> Cc: Mark Rutland <mark.rutland@xxxxxxx>
> Cc: Ian Campbell <ijc+devicetree@xxxxxxxxxxxxxx>
> Cc: Kumar Gala <galak@xxxxxxxxxxxxxx>
> Signed-off-by: Thomas Abraham <thomas.ab@xxxxxxxxxxx>
> ---
> Documentation/devicetree/bindings/power/opp.txt | 9 +++++++++
> 1 file changed, 9 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/power/opp.txt b/Documentation/devicetree/bindings/power/opp.txt
> index 74499e5..4df5cca 100644
> --- a/Documentation/devicetree/bindings/power/opp.txt
> +++ b/Documentation/devicetree/bindings/power/opp.txt
> @@ -10,6 +10,10 @@ Properties:
> freq: clock frequency in kHz
> vol: voltage in microvolt
>
> +Optional Properties:
> +- boost-opp: Similar to "operating-points" property but usable only in
> + optional boost operating modes.
> +
> Examples:
>
> cpu@0 {
> @@ -22,4 +26,9 @@ cpu@0 {
> 396000 950000
> 198000 850000
> >;
> + boost-opp = <
> + /* kHz uV */
> + 1500000 1350000
> + 1400000 1285000
> + >;
This looks like an example of needing to add more properties to the
OPP table. There are ongoing discussions on how to extend OPP table
and map to C states. This should be part of that discussion.
Rob
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