Merge branch 'opp/linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm

Pull operating performance points (OPP) framework changes for v5.15
from Viresh Kumar:

"This moves the OPP bindings to DT schema (Rob Herring)."

* 'opp/linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm:
  dt-bindings: opp: Convert to DT schema
  dt-bindings: Clean-up OPP binding node names in examples
  ARM: dts: omap: Drop references to opp.txt

Documentation/devicetree/bindings/cpufreq/cpufreq-dt.txt

@@ -11,7 +11,7 @@ Required properties:
 - None
 
 Optional properties:
-- operating-points: Refer to Documentation/devicetree/bindings/opp/opp.txt for
+- operating-points: Refer to Documentation/devicetree/bindings/opp/opp-v1.yaml for
   details. OPPs *must* be supplied either via DT, i.e. this property, or
   populated at runtime.
 - clock-latency: Specify the possible maximum transition latency for clock,

Documentation/devicetree/bindings/cpufreq/cpufreq-mediatek.txt

@@ -10,7 +10,7 @@ Required properties:
 			  transition and not stable yet.
 	Please refer to Documentation/devicetree/bindings/clock/clock-bindings.txt for
 	generic clock consumer properties.
-- operating-points-v2: Please refer to Documentation/devicetree/bindings/opp/opp.txt
+- operating-points-v2: Please refer to Documentation/devicetree/bindings/opp/opp-v2.yaml
 	for detail.
 - proc-supply: Regulator for Vproc of CPU cluster.
 

Documentation/devicetree/bindings/cpufreq/cpufreq-st.txt

@@ -6,8 +6,6 @@ from the SoC, then supplies the OPP framework with 'prop' and 'supported
 hardware' information respectively.  The framework is then able to read
 the DT and operate in the usual way.
 
-For more information about the expected DT format [See: ../opp/opp.txt].
-
 Frequency Scaling only
 ----------------------
 
@@ -15,7 +13,7 @@ No vendor specific driver required for this.
 
 Located in CPU's node:
 
-- operating-points		: [See: ../power/opp.txt]
+- operating-points		: [See: ../power/opp-v1.yaml]
 
 Example [safe]
 --------------
@@ -37,7 +35,7 @@ This requires the ST CPUFreq driver to supply 'process' and 'version' info.
 
 Located in CPU's node:
 
-- operating-points-v2		: [See ../power/opp.txt]
+- operating-points-v2		: [See ../power/opp-v2.yaml]
 
 Example [unsafe]
 ----------------

Documentation/devicetree/bindings/cpufreq/nvidia,tegra20-cpufreq.txt

@@ -4,7 +4,7 @@ Binding for NVIDIA Tegra20 CPUFreq
 Required properties:
 - clocks: Must contain an entry for the CPU clock.
   See ../clocks/clock-bindings.txt for details.
-- operating-points-v2: See ../bindings/opp/opp.txt for details.
+- operating-points-v2: See ../bindings/opp/opp-v2.yaml for details.
 - #cooling-cells: Should be 2. See ../thermal/thermal-cooling-devices.yaml for details.
 
 For each opp entry in 'operating-points-v2' table:

Documentation/devicetree/bindings/devfreq/rk3399_dmc.txt

@@ -8,7 +8,7 @@ Required properties:
 - clocks:		 Phandles for clock specified in "clock-names" property
 - clock-names :		 The name of clock used by the DFI, must be
 			 "pclk_ddr_mon";
-- operating-points-v2:	 Refer to Documentation/devicetree/bindings/opp/opp.txt
+- operating-points-v2:	 Refer to Documentation/devicetree/bindings/opp/opp-v2.yaml
 			 for details.
 - center-supply:	 DMC supply node.
 - status:		 Marks the node enabled/disabled.

Documentation/devicetree/bindings/gpu/arm,mali-bifrost.yaml

@@ -136,7 +136,7 @@ examples:
       resets = <&reset 0>, <&reset 1>;
     };
 
-    gpu_opp_table: opp_table0 {
+    gpu_opp_table: opp-table {
       compatible = "operating-points-v2";
 
       opp-533000000 {

Documentation/devicetree/bindings/gpu/arm,mali-midgard.yaml

@@ -160,7 +160,7 @@ examples:
       #cooling-cells = <2>;
     };
 
-    gpu_opp_table: opp_table0 {
+    gpu_opp_table: opp-table {
       compatible = "operating-points-v2";
 
       opp-533000000 {

Documentation/devicetree/bindings/interconnect/fsl,imx8m-noc.yaml

@@ -81,10 +81,10 @@ examples:
         noc_opp_table: opp-table {
             compatible = "operating-points-v2";
 
-            opp-133M {
+            opp-133333333 {
                 opp-hz = /bits/ 64 <133333333>;
             };
-            opp-800M {
+            opp-800000000 {
                 opp-hz = /bits/ 64 <800000000>;
             };
         };

Documentation/devicetree/bindings/opp/allwinner,sun50i-h6-operating-points.yaml

@@ -18,6 +18,9 @@ description: |
   sun50i-cpufreq-nvmem driver reads the efuse value from the SoC to
   provide the OPP framework with required information.
 
+allOf:
+  - $ref: opp-v2-base.yaml#
+
 properties:
   compatible:
     const: allwinner,sun50i-h6-operating-points
@@ -43,6 +46,7 @@ patternProperties:
 
     properties:
       opp-hz: true
+      clock-latency-ns: true
 
     patternProperties:
       "opp-microvolt-.*": true

Documentation/devicetree/bindings/opp/opp-v1.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/opp/opp-v1.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Generic OPP (Operating Performance Points) v1 Bindings
+
+maintainers:
+  - Viresh Kumar <viresh.kumar@linaro.org>
+
+description: |+
+  Devices work at voltage-current-frequency combinations and some implementations
+  have the liberty of choosing these. These combinations are called Operating
+  Performance Points aka OPPs. This document defines bindings for these OPPs
+  applicable across wide range of devices. For illustration purpose, this document
+  uses CPU as a device.
+
+  This binding only supports voltage-frequency pairs.
+
+select: true
+
+properties:
+  operating-points:
+    $ref: /schemas/types.yaml#/definitions/uint32-matrix
+    items:
+      items:
+        - description: Frequency in kHz
+        - description: Voltage for OPP in uV
+
+
+additionalProperties: true
+examples:
+  - |
+    cpus {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        cpu@0 {
+            compatible = "arm,cortex-a9";
+            device_type = "cpu";
+            reg = <0>;
+            next-level-cache = <&L2>;
+            operating-points =
+                /* kHz    uV */
+                <792000 1100000>,
+                <396000 950000>,
+                <198000 850000>;
+        };
+    };
+...

Documentation/devicetree/bindings/opp/opp-v2-base.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/opp/opp-v2-base.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Generic OPP (Operating Performance Points) Common Binding
+
+maintainers:
+  - Viresh Kumar <viresh.kumar@linaro.org>
+
+description: |
+  Devices work at voltage-current-frequency combinations and some implementations
+  have the liberty of choosing these. These combinations are called Operating
+  Performance Points aka OPPs. This document defines bindings for these OPPs
+  applicable across wide range of devices. For illustration purpose, this document
+  uses CPU as a device.
+
+  This describes the OPPs belonging to a device.
+
+select: false
+
+properties:
+  $nodename:
+    pattern: '^opp-table(-[a-z0-9]+)?$'
+
+  opp-shared:
+    description:
+      Indicates that device nodes using this OPP Table Node's phandle switch
+      their DVFS state together, i.e. they share clock/voltage/current lines.
+      Missing property means devices have independent clock/voltage/current
+      lines, but they share OPP tables.
+    type: boolean
+
+patternProperties:
+  '^opp-?[0-9]+$':
+    type: object
+    description:
+      One or more OPP nodes describing voltage-current-frequency combinations.
+      Their name isn't significant but their phandle can be used to reference an
+      OPP. These are mandatory except for the case where the OPP table is
+      present only to indicate dependency between devices using the opp-shared
+      property.
+
+    properties:
+      opp-hz:
+        description:
+          Frequency in Hz, expressed as a 64-bit big-endian integer. This is a
+          required property for all device nodes, unless another "required"
+          property to uniquely identify the OPP nodes exists. Devices like power
+          domains must have another (implementation dependent) property.
+
+      opp-microvolt:
+        description: |
+          Voltage for the OPP
+
+          A single regulator's voltage is specified with an array of size one or three.
+          Single entry is for target voltage and three entries are for <target min max>
+          voltages.
+
+          Entries for multiple regulators shall be provided in the same field separated
+          by angular brackets <>. The OPP binding doesn't provide any provisions to
+          relate the values to their power supplies or the order in which the supplies
+          need to be configured and that is left for the implementation specific
+          binding.
+
+          Entries for all regulators shall be of the same size, i.e. either all use a
+          single value or triplets.
+        minItems: 1
+        maxItems: 8   # Should be enough regulators
+        items:
+          minItems: 1
+          maxItems: 3
+
+      opp-microamp:
+        description: |
+          The maximum current drawn by the device in microamperes considering
+          system specific parameters (such as transients, process, aging,
+          maximum operating temperature range etc.) as necessary. This may be
+          used to set the most efficient regulator operating mode.
+
+          Should only be set if opp-microvolt or opp-microvolt-<name> is set for
+          the OPP.
+
+          Entries for multiple regulators shall be provided in the same field
+          separated by angular brackets <>. If current values aren't required
+          for a regulator, then it shall be filled with 0. If current values
+          aren't required for any of the regulators, then this field is not
+          required. The OPP binding doesn't provide any provisions to relate the
+          values to their power supplies or the order in which the supplies need
+          to be configured and that is left for the implementation specific
+          binding.
+        minItems: 1
+        maxItems: 8   # Should be enough regulators
+
+      opp-level:
+        description:
+          A value representing the performance level of the device.
+        $ref: /schemas/types.yaml#/definitions/uint32
+
+      opp-peak-kBps:
+        description:
+          Peak bandwidth in kilobytes per second, expressed as an array of
+          32-bit big-endian integers. Each element of the array represents the
+          peak bandwidth value of each interconnect path. The number of elements
+          should match the number of interconnect paths.
+        minItems: 1
+        maxItems: 32  # Should be enough
+
+      opp-avg-kBps:
+        description:
+          Average bandwidth in kilobytes per second, expressed as an array
+          of 32-bit big-endian integers. Each element of the array represents the
+          average bandwidth value of each interconnect path. The number of elements
+          should match the number of interconnect paths. This property is only
+          meaningful in OPP tables where opp-peak-kBps is present.
+        minItems: 1
+        maxItems: 32  # Should be enough
+
+      clock-latency-ns:
+        description:
+          Specifies the maximum possible transition latency (in nanoseconds) for
+          switching to this OPP from any other OPP.
+
+      turbo-mode:
+        description:
+          Marks the OPP to be used only for turbo modes. Turbo mode is available
+          on some platforms, where the device can run over its operating
+          frequency for a short duration of time limited by the device's power,
+          current and thermal limits.
+        type: boolean
+
+      opp-suspend:
+        description:
+          Marks the OPP to be used during device suspend. If multiple OPPs in
+          the table have this, the OPP with highest opp-hz will be used.
+        type: boolean
+
+      opp-supported-hw:
+        description: |
+          This property allows a platform to enable only a subset of the OPPs
+          from the larger set present in the OPP table, based on the current
+          version of the hardware (already known to the operating system).
+
+          Each block present in the array of blocks in this property, represents
+          a sub-group of hardware versions supported by the OPP. i.e. <sub-group
+          A>, <sub-group B>, etc. The OPP will be enabled if _any_ of these
+          sub-groups match the hardware's version.
+
+          Each sub-group is a platform defined array representing the hierarchy
+          of hardware versions supported by the platform. For a platform with
+          three hierarchical levels of version (X.Y.Z), this field shall look
+          like
+
+          opp-supported-hw = <X1 Y1 Z1>, <X2 Y2 Z2>, <X3 Y3 Z3>.
+
+          Each level (eg. X1) in version hierarchy is represented by a 32 bit
+          value, one bit per version and so there can be maximum 32 versions per
+          level. Logical AND (&) operation is performed for each level with the
+          hardware's level version and a non-zero output for _all_ the levels in
+          a sub-group means the OPP is supported by hardware. A value of
+          0xFFFFFFFF for each level in the sub-group will enable the OPP for all
+          versions for the hardware.
+        $ref: /schemas/types.yaml#/definitions/uint32-matrix
+        maxItems: 32
+        items:
+          minItems: 1
+          maxItems: 4
+
+      required-opps:
+        description:
+          This contains phandle to an OPP node in another device's OPP table. It
+          may contain an array of phandles, where each phandle points to an OPP
+          of a different device. It should not contain multiple phandles to the
+          OPP nodes in the same OPP table. This specifies the minimum required
+          OPP of the device(s), whose OPP's phandle is present in this property,
+          for the functioning of the current device at the current OPP (where
+          this property is present).
+        $ref: /schemas/types.yaml#/definitions/phandle-array
+
+    patternProperties:
+      '^opp-microvolt-':
+        description:
+          Named opp-microvolt property. This is exactly similar to the above
+          opp-microvolt property, but allows multiple voltage ranges to be
+          provided for the same OPP. At runtime, the platform can pick a <name>
+          and matching opp-microvolt-<name> property will be enabled for all
+          OPPs. If the platform doesn't pick a specific <name> or the <name>
+          doesn't match with any opp-microvolt-<name> properties, then
+          opp-microvolt property shall be used, if present.
+        $ref: /schemas/types.yaml#/definitions/uint32-matrix
+        minItems: 1
+        maxItems: 8   # Should be enough regulators
+        items:
+          minItems: 1
+          maxItems: 3
+
+      '^opp-microamp-':
+        description:
+          Named opp-microamp property. Similar to opp-microvolt-<name> property,
+          but for microamp instead.
+        $ref: /schemas/types.yaml#/definitions/uint32-array
+        minItems: 1
+        maxItems: 8   # Should be enough regulators
+
+    dependencies:
+      opp-avg-kBps: [ opp-peak-kBps ]
+
+required:
+  - compatible
+
+additionalProperties: true
+
+...

Documentation/devicetree/bindings/opp/qcom-opp.txt

 Qualcomm OPP bindings to describe OPP nodes
 
 The bindings are based on top of the operating-points-v2 bindings
-described in Documentation/devicetree/bindings/opp/opp.txt
+described in Documentation/devicetree/bindings/opp/opp-v2-base.yaml
 Additional properties are described below.
 
 * OPP Table Node

Documentation/devicetree/bindings/opp/ti-omap5-opp-supply.txt

@@ -13,7 +13,7 @@ regulators to the device that will undergo OPP transitions we can make use
 of the multi regulator binding that is part of the OPP core described here [1]
 to describe both regulators needed by the platform.
 
-[1] Documentation/devicetree/bindings/opp/opp.txt
+[1] Documentation/devicetree/bindings/opp/opp-v2.yaml
 
 Required Properties for Device Node:
 - vdd-supply: phandle to regulator controlling VDD supply

Documentation/devicetree/bindings/power/power-domain.yaml

@@ -46,7 +46,7 @@ properties:
       Phandles to the OPP tables of power domains provided by a power domain
       provider. If the provider provides a single power domain only or all
       the power domains provided by the provider have identical OPP tables,
-      then this shall contain a single phandle. Refer to ../opp/opp.txt
+      then this shall contain a single phandle. Refer to ../opp/opp-v2-base.yaml
       for more information.
 
   "#power-domain-cells":

arch/arm/boot/dts/omap34xx.dtsi

@@ -24,7 +24,6 @@ cpu: cpu@0 {
 		};
 	};
 
-	/* see Documentation/devicetree/bindings/opp/opp.txt */
 	cpu0_opp_table: opp-table {
 		compatible = "operating-points-v2-ti-cpu";
 		syscon = <&scm_conf>;

arch/arm/boot/dts/omap36xx.dtsi

@@ -29,7 +29,6 @@ cpu: cpu@0 {
 		};
 	};
 
-	/* see Documentation/devicetree/bindings/opp/opp.txt */
 	cpu0_opp_table: opp-table {
 		compatible = "operating-points-v2-ti-cpu";
 		syscon = <&scm_conf>;