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PM / OPP: dt-bindings: Make "opp-hz" optional for power domains 

The "opp-hz" property is not relevant across all the devices that use
the OPP tables now. For example, for a power domain a frequency value
wouldn't mean anything. Though they must have another property, which
may be implementation defined, which uniquely identifies the OPP nodes.

Make "opp-hz" optional for such devices.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
hifive-unleashed-5.1
Viresh Kumar 2018-04-06 12:59:55 +05:30
parent f05fededbb
commit b89469bdf0
1 changed files with 4 additions and 1 deletions
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5
Documentation/devicetree/bindings/opp/opp.txt
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@ -82,7 +82,10 @@ This defines voltage-current-frequency combinations along with other related
properties.
Required properties:
- opp-hz: Frequency in Hz, expressed as a 64-bit big-endian integer.
- opp-hz: Frequency in Hz, expressed as a 64-bit big-endian integer. This is a
required property for all device nodes but devices like power domains. The
power domain nodes must have another (implementation dependent) property which
uniquely identifies the OPP nodes.
Optional properties:
- opp-microvolt: voltage in micro Volts.