[TEGRA194_CPUFREQ PATCH v4 1/4] dt-bindings: arm: Add t194 ccplex compatible and bpmp property
sumitg at nvidia.com
Fri Jun 26 11:43:53 EDT 2020
To do frequency scaling on all CPUs within T194 CPU Complex, we need
to query BPMP for data on valid operating points. Document a compatible
string under 'cpus' node to represent the CPU Complex for binding drivers
like cpufreq which don't have their node or CPU Complex node to bind to.
Also, document a property to point to the BPMP device that can be queried
for all CPUs.
Signed-off-by: Sumit Gupta <sumitg at nvidia.com>
Documentation/devicetree/bindings/arm/cpus.yaml | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/Documentation/devicetree/bindings/arm/cpus.yaml b/Documentation/devicetree/bindings/arm/cpus.yaml
index a018147..737b55e 100644
@@ -162,6 +162,7 @@ properties:
+ - nvidia,tegra194-ccplex
@@ -255,6 +256,14 @@ properties:
where voltage is in V, frequency is in MHz.
+ $ref: '/schemas/types.yaml#/definitions/phandle'
+ descrption: |
+ Specifies the bpmp node that needs to be queried to get
+ operating point data for all CPUs.
+ Optional for NVIDIA Tegra194 Carmel CPUs
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