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+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/opp/opp-v2-qcom-adreno.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm Adreno compatible OPP supply
+
+description:
+ Adreno GPUs present in Qualcomm's Snapdragon chipsets uses an OPP specific
+ ACD related information tailored for the specific chipset. This binding
+ provides the information needed to describe such a hardware value.
+
+maintainers:
+ - Rob Clark <robdclark@gmail.com>
+
+allOf:
+ - $ref: opp-v2-base.yaml#
+
+properties:
+ compatible:
+ items:
+ - const: operating-points-v2-adreno
+ - const: operating-points-v2
+
+patternProperties:
+ '^opp-?[0-9]+$':
+ type: object
+ additionalProperties: false
+
+ properties:
+ opp-hz: true
+
+ opp-level: true
+
+ opp-peak-kBps: true
+
+ opp-supported-hw: true
+
+ qcom,opp-acd-level:
+ description: |
+ A positive value representing the ACD (Adaptive Clock Distribution,
+ a fancy name for clk throttling during voltage droop) level associated
+ with this OPP node. This value is shared to a co-processor inside GPU
+ (called Graphics Management Unit a.k.a GMU) during wake up. It may not
+ be present for some OPPs and GMU will disable ACD while transitioning
+ to that OPP. This value encodes a voltage threshold and few other knobs
+ which are identified by characterization of the SoC. So, it doesn't have
+ any unit.
+ $ref: /schemas/types.yaml#/definitions/uint32
+
+ required:
+ - opp-hz
+ - opp-level
+
+required:
+ - compatible
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/power/qcom-rpmpd.h>
+
+ gpu_opp_table: opp-table {
+ compatible = "operating-points-v2-adreno", "operating-points-v2";
+
+ opp-687000000 {
+ opp-hz = /bits/ 64 <687000000>;
+ opp-level = <RPMH_REGULATOR_LEVEL_SVS_L1>;
+ opp-peak-kBps = <8171875>;
+ qcom,opp-acd-level = <0x882e5ffd>;
+ };
+
+ opp-550000000 {
+ opp-hz = /bits/ 64 <550000000>;
+ opp-level = <RPMH_REGULATOR_LEVEL_SVS>;
+ opp-peak-kBps = <6074219>;
+ qcom,opp-acd-level = <0xc0285ffd>;
+ };
+
+ opp-390000000 {
+ opp-hz = /bits/ 64 <390000000>;
+ opp-level = <RPMH_REGULATOR_LEVEL_LOW_SVS>;
+ opp-peak-kBps = <3000000>;
+ qcom,opp-acd-level = <0xc0285ffd>;
+ };
+
+ opp-300000000 {
+ opp-hz = /bits/ 64 <300000000>;
+ opp-level = <RPMH_REGULATOR_LEVEL_LOW_SVS_D1>;
+ opp-peak-kBps = <2136719>;
+ /* Intentionally left out qcom,opp-acd-level property here */
+ };
+
+ };
Add a new schema which extends opp-v2 to support a new vendor specific property required for Adreno GPUs found in Qualcomm's SoCs. The new property called "qcom,opp-acd-level" carries a u32 value recommended for each opp needs to be shared to GMU during runtime. Cc: Rob Clark <robdclark@gmail.com> Signed-off-by: Akhil P Oommen <quic_akhilpo@quicinc.com> --- .../bindings/opp/opp-v2-qcom-adreno.yaml | 96 ++++++++++++++++++++++ 1 file changed, 96 insertions(+)