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| author | Rajendra Nayak <rnayak@codeaurora.org> | 2019-01-10 09:32:01 +0530 |
|---|---|---|
| committer | Andy Gross <andy.gross@linaro.org> | 2019-01-22 15:06:11 -0600 |
| commit | cea8e2f3938c510f6041c632fe19e4e95296ae04 (patch) | |
| tree | e0ee77f4c410d10657511cca284fc0b0cf77f259 /Documentation/devicetree/bindings/opp | |
| parent | a5fc7526038b66eede0e50a96475b3a2e70849eb (diff) | |
| download | lwn-cea8e2f3938c510f6041c632fe19e4e95296ae04.tar.gz lwn-cea8e2f3938c510f6041c632fe19e4e95296ae04.zip | |
dt-bindings: opp: Introduce opp-level bindings
Add opp-level as an additional property in the OPP node to describe
the performance level of the device.
On some SoCs (especially from Qualcomm and MediaTek) this value
is 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.
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
Diffstat (limited to 'Documentation/devicetree/bindings/opp')
| -rw-r--r-- | Documentation/devicetree/bindings/opp/opp.txt | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/opp/opp.txt b/Documentation/devicetree/bindings/opp/opp.txt index c396c4c0af92..76b6c79604a5 100644 --- a/Documentation/devicetree/bindings/opp/opp.txt +++ b/Documentation/devicetree/bindings/opp/opp.txt @@ -129,6 +129,9 @@ Optional properties: - opp-microamp-<name>: Named opp-microamp property. Similar to opp-microvolt-<name> property, but for microamp instead. +- opp-level: A value representing the performance level of the device, + expressed as a 32-bit integer. + - clock-latency-ns: Specifies the maximum possible transition latency (in nanoseconds) for switching to this OPP from any other OPP. |