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+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/opp/operating-points-v2-ti-cpu.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: TI CPU OPP (Operating Performance Points)
+
+description:
+ TI SoCs, like those in the AM335x, AM437x, AM57xx, AM62x, and DRA7xx
+ families, the CPU frequencies subset and the voltage value of each
+ OPP vary based on the silicon variant used. The data sheet sections
+ corresponding to "Operating Performance Points" describe the frequency
+ and voltage values based on device type and speed bin information
+ blown in corresponding eFuse bits as referred to by the Technical
+ Reference Manual.
+
+ This document extends the operating-points-v2 binding by providing
+ the hardware description for the scheme mentioned above.
+
+maintainers:
+ - Dhruva Gole <d-gole@ti.com>
+
+allOf:
+ - $ref: opp-v2-base.yaml#
+
+properties:
+ compatible:
+ const: operating-points-v2-ti-cpu
+
+ syscon:
+ $ref: /schemas/types.yaml#/definitions/phandle
+ description: |
+ points to syscon node representing the control module
+ register space of the SoC.
+
+ opp-shared: true
+
+patternProperties:
+ '^opp(-?[0-9]+)*$':
+ type: object
+ additionalProperties: false
+
+ properties:
+ clock-latency-ns: true
+ opp-hz: true
+ opp-microvolt: true
+ opp-supported-hw:
+ items:
+ items:
+ - description:
+ The revision of the SoC the OPP is supported by.
+ This can be easily obtained from the datasheet of the
+ part being ordered/used. For example, it will be 0x01 for SR1.0
+
+ - description:
+ The eFuse bits that indicate the particular OPP is available.
+ The device datasheet has a table talking about Device Speed Grades.
+ This table is to be sorted with only the unique elements of the
+ MAXIMUM OPERATING FREQUENCY starting from the first row which
+ tells the lowest OPP, to the highest. The corresponding bits
+ need to be set based on N elements of speed grade the device supports.
+ So, if there are 3 possible unique MAXIMUM OPERATING FREQUENCY
+ in the table, then BIT(0) | (1) | (2) will be set, which means
+ the value shall be 0x7.
+
+ opp-suspend: true
+ turbo-mode: true
+
+ required:
+ - opp-hz
+ - opp-supported-hw
+
+required:
+ - compatible
+ - syscon
+
+additionalProperties: false
+
+examples:
+ - |
+ opp-table {
+ compatible = "operating-points-v2-ti-cpu";
+ syscon = <&scm_conf>;
+
+ opp-300000000 {
+ opp-hz = /bits/ 64 <300000000>;
+ opp-microvolt = <1100000 1078000 1122000>;
+ opp-supported-hw = <0x06 0x0020>;
+ opp-suspend;
+ };
+
+ opp-500000000 {
+ opp-hz = /bits/ 64 <500000000>;
+ opp-microvolt = <1100000 1078000 1122000>;
+ opp-supported-hw = <0x01 0xFFFF>;
+ };
+
+ opp-600000000 {
+ opp-hz = /bits/ 64 <600000000>;
+ opp-microvolt = <1100000 1078000 1122000>;
+ opp-supported-hw = <0x06 0x0040>;
+ };
+
+ opp-1000000000 {
+ opp-hz = /bits/ 64 <1000000000>;
+ opp-microvolt = <1325000 1298500 1351500>;
+ opp-supported-hw = <0x04 0x0200>;
+ };
+ };