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    Subject[PATCH v9 01/10] dt-bindings: opp: Introduce opp-level bindings
    Date
    On some SoCs (especially from Qualcomm and MediaTek) an OPP
    node needs to describe an additional level/corner value
    that is then communicated to a remote microprocessor by the CPU, which
    then takes some actions (like adjusting voltage values across various rails)
    based on the value passed.

    Describe these bindings in the opp-level bindings document.

    Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org>
    ---
    .../devicetree/bindings/opp/opp-level.txt | 29 +++++++++++++++++++
    1 file changed, 29 insertions(+)
    create mode 100644 Documentation/devicetree/bindings/opp/opp-level.txt

    diff --git a/Documentation/devicetree/bindings/opp/opp-level.txt b/Documentation/devicetree/bindings/opp/opp-level.txt
    new file mode 100644
    index 000000000000..f9134ed08164
    --- /dev/null
    +++ b/Documentation/devicetree/bindings/opp/opp-level.txt
    @@ -0,0 +1,29 @@
    +OPP level bindings to descibe OPP nodes with corner/level values
    +
    +OPP tables for devices on some SoCs, especially from Qualcomm and
    +MediaTek require an additional platform specific corner/level
    +value to be specified.
    +This value is passed on to a Power Manager by
    +the CPU, which then takes the necessary actions to set a voltage
    +rail to an appropriate voltage based on the value passed.
    +
    +The bindings are based on top of the operating-points-v2 bindings
    +described in Documentation/devicetree/bindings/opp/opp.txt,
    +with the exception that all of the properties are now optional,
    +including the opp-hz property.
    +
    +Additional properties are described below.
    +
    +* OPP Table Node
    +
    +Required properties:
    +- compatible: Allow OPPs to express their compatibility. It should be:
    + "operating-points-v2-level"
    +
    +* OPP Node
    +
    +Required properties:
    +- opp-level: On some SoC platforms an OPP node can describe a positive value
    +representing a corner/level that's communicated with a remote microprocessor
    +(usually called the power manager) which then translates it into a certain voltage on
    +a voltage rail.
    --
    QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member
    of Code Aurora Forum, hosted by The Linux Foundation
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