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dt-bindings: Add documentation for rpm master stats

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Add documentation for rpm master stas node.

Change-Id: Ia202c45f996e3263883d8a3c233274b3c7f63c08
This commit is contained in:
Raghavendra Kakarla 2020-04-26 11:28:20 +05:30 • committed by Gerrit - the friendly Code Review server
commit b07a13e52c
1 changed files with 47 additions and 0 deletions
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bindings/arm/msm/rpm_master_stats.txt Normal file
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* RPM Stats
RPM maintains a counter of the masters i.e APPS, MPPS etc
number of times the SoC entered a deeper sleep mode involving
lowering or powering down the backbone rails - Cx and Mx and
the oscillator clock, XO.
PROPERTIES
- compatible:
Usage: required
Value type: <string>
Definition: Should be "qcom,rpm-master-stats".
- reg:
Usage: required
Value type: <prop-encoded-array>
Definition: The address on the RPM RAM from where the stats are read
should be provided as "phys_addr_base". The offset
from which the stats are available should be provided as
"offset_addr".
- reg-names:
Usage: required
Value type: <prop-encoded-array>
Definition: Provides labels for the reg property.
- qcom,masters:
Usage: required
Value tye: <string list>
Defination: Provides the masters list.
qcom,master-offset:
Usage: required
Value tye: <prop-encoded-array>
Defination: Provides the masters list
EXAMPLE:
qcom,rpm-master-stats@60150 {
compatible = "qcom,rpm-master-stats";
reg = <0x45f0150 0x5000>;
qcom,masters = "APSS", "MPSS", "ADSP", "CDSP", "TZ";
qcom,master-stats-version = <2>;
qcom,master-offset = <4096>;
};