| Message ID | 20180316040824.21472-4-rnayak@codeaurora.org (mailing list archive) |
|---|---|
| State | Superseded, archived |
| Delegated to: | Andy Gross |
| Headers | show |
On 16-03-18, 09:38, Rajendra Nayak wrote: > On Qualcomm platforms, 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 qcom-opp bindings document. > > Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org> > --- > Documentation/devicetree/bindings/opp/qcom-opp.txt | 25 ++++++++++++++++++++++ > 1 file changed, 25 insertions(+) > create mode 100644 Documentation/devicetree/bindings/opp/qcom-opp.txt > > diff --git a/Documentation/devicetree/bindings/opp/qcom-opp.txt b/Documentation/devicetree/bindings/opp/qcom-opp.txt > new file mode 100644 > index 000000000000..56fe87751881 > --- /dev/null > +++ b/Documentation/devicetree/bindings/opp/qcom-opp.txt > @@ -0,0 +1,25 @@ > +Qualcomm OPP bindings to descibe OPP nodes with corner/level values > + > +OPP tables for devices on qualcomm platforms require an additional > +platform specific corner/level value to be specified. > +This value is passed on to the RPM (Resource Power Manager) by > +the CPU, which then takes the necessary actions to set a voltage > +rail to a 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 > +Additional properties are described below. > + > +* OPP Table Node > + > +Required properties: > +- compatible: Allow OPPs to express their compatibility. It should be: > + "operating-points-v2-qcom" > + > +* OPP Node > + > +Required properties: > +- qcom,level: On Qualcomm platforms an OPP node can describe a positive value > +representing a corner/level thats comminicated with a remote microprocessor > +(Usually called the RPM) which then translates it into a certain voltage on > +a voltage rail. Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
On Fri, Mar 16, 2018 at 09:38:20AM +0530, Rajendra Nayak wrote: > On Qualcomm platforms, 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 qcom-opp bindings document. > > Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org> > --- > Documentation/devicetree/bindings/opp/qcom-opp.txt | 25 ++++++++++++++++++++++ > 1 file changed, 25 insertions(+) > create mode 100644 Documentation/devicetree/bindings/opp/qcom-opp.txt Reviewed-by: Rob Herring <robh@kernel.org> -- To unsubscribe from this list: send the line "unsubscribe linux-arm-msm" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Quoting Rajendra Nayak (2018-03-15 21:08:20) > On Qualcomm platforms, 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 qcom-opp bindings document. > > Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org> > --- > diff --git a/Documentation/devicetree/bindings/opp/qcom-opp.txt b/Documentation/devicetree/bindings/opp/qcom-opp.txt > new file mode 100644 > index 000000000000..56fe87751881 > --- /dev/null > +++ b/Documentation/devicetree/bindings/opp/qcom-opp.txt > @@ -0,0 +1,25 @@ > +Qualcomm OPP bindings to descibe OPP nodes with corner/level values > + > +OPP tables for devices on qualcomm platforms require an additional Capitalize qualcomm? > +platform specific corner/level value to be specified. > +This value is passed on to the RPM (Resource Power Manager) by > +the CPU, which then takes the necessary actions to set a voltage > +rail to a appropriate voltage based on the value passed. to an > + > +The bindings are based on top of the operating-points-v2 bindings > +described in Documentation/devicetree/bindings/opp/opp.txt > +Additional properties are described below. > + > +* OPP Table Node > + > +Required properties: > +- compatible: Allow OPPs to express their compatibility. It should be: > + "operating-points-v2-qcom" Can this be operating-points-v2-level or -qcom-level? Just worried that qcom is too generic. > + > +* OPP Node > + > +Required properties: > +- qcom,level: On Qualcomm platforms an OPP node can describe a positive value > +representing a corner/level thats comminicated with a remote microprocessor s/thats/that's/ > +(Usually called the RPM) which then translates it into a certain voltage on lowercase Usually > +a voltage rail. -- To unsubscribe from this list: send the line "unsubscribe linux-arm-msm" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/Documentation/devicetree/bindings/opp/qcom-opp.txt b/Documentation/devicetree/bindings/opp/qcom-opp.txt new file mode 100644 index 000000000000..56fe87751881 --- /dev/null +++ b/Documentation/devicetree/bindings/opp/qcom-opp.txt @@ -0,0 +1,25 @@ +Qualcomm OPP bindings to descibe OPP nodes with corner/level values + +OPP tables for devices on qualcomm platforms require an additional +platform specific corner/level value to be specified. +This value is passed on to the RPM (Resource Power Manager) by +the CPU, which then takes the necessary actions to set a voltage +rail to a 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 +Additional properties are described below. + +* OPP Table Node + +Required properties: +- compatible: Allow OPPs to express their compatibility. It should be: + "operating-points-v2-qcom" + +* OPP Node + +Required properties: +- qcom,level: On Qualcomm platforms an OPP node can describe a positive value +representing a corner/level thats comminicated with a remote microprocessor +(Usually called the RPM) which then translates it into a certain voltage on +a voltage rail.
On Qualcomm platforms, 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 qcom-opp bindings document. Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org> --- Documentation/devicetree/bindings/opp/qcom-opp.txt | 25 ++++++++++++++++++++++ 1 file changed, 25 insertions(+) create mode 100644 Documentation/devicetree/bindings/opp/qcom-opp.txt