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dt-bindings: devfreq: add support for L3 BW voting in devfreq_icc

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Update the devfreq_icc documentation to add support for L3 BW
voting devices which require an additional bus width property to
be defined.

Change-Id: Iec16c5f666b2643971d45cb48c97015407372853
This commit is contained in:
Amir Vajid 2020-05-06 09:36:58 -07:00
commit d67fba66f8
1 changed files with 9 additions and 3 deletions
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12
bindings/devfreq/devfreq_icc.txt
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@ -8,6 +8,7 @@ CPU, GPU) master port(s) to the slave (Eg: DDR) port(s).
Required properties:
- compatible: Must be "qcom,devfreq-icc" or "qcom,devfreq-icc-ddr"
or "qcom,devfreq-icc-llcc" or "qcom,devfreq-icc-l3"
or "qcom,devfreq-icc-l3bw"
- interconnects: Pairs of phandles and interconnect provider specificers
to denote the edge source and destination ports of the
desired interconnect path.
@ -16,12 +17,17 @@ Required properties:
requested from the device master port to the slave port.
The list of values depend on the supported bus/slave
frequencies and the bus width. Required for all devices
except those compatible with "qcom,devfreq-icc-l3".
except those compatible with "qcom,devfreq-icc-l3" or
"qcom,devfreq-icc-l3bw".
- reg: Physical base address and region size of the memory
mapped registers containing the device's frequency
table. Required for "qcom,devfreq-icc-l3" devices.
table. Required for "qcom,devfreq-icc-l3" and
"qcom,devfreq-icc-l3bw" devices.
- reg-names: Name used for the above registers. Expected name is
"ftbl-base". Required for "qcom,devfreq-icc-l3" devices.
"ftbl-base". Required for "qcom,devfreq-icc-l3"
and "qcom,devfreq-icc-l3bw" devices.
- qcom,bus-width: Bus width of the interconnect path. Only required for
"qcom,devfreq-icc-l3bw" devices.
Optional properties:
- qcom,active-only: Indicates that the bandwidth votes need to be
enforced only when the CPU subsystem is active.