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/Linux-v4.19/Documentation/power/
Dopp.txt1 Operating Performance Points (OPP) Library
9 2. Initial OPP List Registration
10 3. OPP Search Functions
11 4. OPP Availability Control Functions
12 5. OPP Data Retrieval Functions
17 1.1 What is an Operating Performance Point (OPP)?
42 OPP library provides a set of helper functions to organize and query the OPP
44 is located in include/linux/pm_opp.h. OPP library can be enabled by enabling
45 CONFIG_PM_OPP from power management menuconfig menu. OPP library depends on
47 optionally boot at a certain OPP without needing cpufreq.
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/Linux-v4.19/Documentation/devicetree/bindings/opp/
Dopp.txt1 Generic OPP (Operating Performance Points) Bindings
10 This document contain multiple versions of OPP binding and only one of them
45 phandle to a OPP table in their DT node. The OPP core will use this phandle to
50 phandle is available, then the same OPP table will be used for all power domains
57 * OPP Table Node
66 - OPP nodes: One or more OPP nodes describing voltage-current-frequency
68 reference an OPP.
71 - opp-shared: Indicates that device nodes using this OPP Table Node's phandle
74 but they share OPP tables.
76 - status: Marks the OPP table enabled/disabled.
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Dti-omap5-opp-supply.txt1 Texas Instruments OMAP compatible OPP supply description
7 an OPP transitions.
11 to the vdd-supply and clk when making an OPP transition. By supplying two
12 regulators to the device that will undergo OPP transitions we can make use
13 of the multi regulator binding that is part of the OPP core described here [1]
25 "ti,omap-opp-supply" - basic OPP supply controlling VDD and VBB
34 volt: voltage in uV - reference voltage (OPP voltage)
36 - ti,absolute-max-voltage-uv: absolute maximum voltage for the OPP supply.
52 /* OMAP OPP Supply with Class0 registers */
Dkryo-cpufreq.txt1 Qualcomm Technologies, Inc. KRYO CPUFreq and OPP bindings
6 of each OPP varies based on the silicon variant in use.
11 to provide the OPP framework with required information (existing HW bitmap).
12 This is used to determine the voltage and frequency value for each OPP of
13 operating-points-v2 table when it is parsed by the OPP framework.
31 In every OPP node:
/Linux-v4.19/drivers/opp/
DKconfig7 is called Operating Performance Point or OPP. The actual definitions
8 of OPP varies over silicon within the same family of devices.
10 OPP layer organizes the data internally using device pointers
/Linux-v4.19/Documentation/devicetree/bindings/cpufreq/
Dti-cpufreq.txt1 TI CPUFreq and OPP bindings
7 provide the OPP framework with supported hardware information. This is
9 when it is parsed by the OPP framework.
26 1. Which revision of the SoC the OPP is supported by
27 2. Which eFuse bits indicate this OPP is available
30 matches, the OPP gets enabled.
Dcpufreq-st.txt5 from the SoC, then supplies the OPP framework with 'prop' and 'supported
/Linux-v4.19/Documentation/devicetree/bindings/power/
Dpower_domain.txt43 - operating-points-v2 : Phandles to the OPP tables of power domains provided by
45 or all the power domains provided by the provider have identical OPP tables,
147 - required-opps: This contains phandle to an OPP node in another device's OPP
149 OPP of a different device. It should not contain multiple phandles to the OPP
150 nodes in the same OPP table. This specifies the minimum required OPP of the
151 device(s), whose OPP's phandle is present in this property, for the
152 functioning of the current device at the current OPP (where this property is
156 - OPP table for domain provider that provides two domains.
/Linux-v4.19/drivers/devfreq/
DKconfig25 When OPP is used with the devfreq device, it is recommended to
26 register devfreq's nb to the OPP's notifier head. If OPP is
27 used with the devfreq device, you may use OPP helper
74 devfreq device uses the OPP table to get the frequency/voltage.
91 and adjusts the operating frequencies and voltages with OPP support.
102 operating frequencies and voltages with OPP support.
/Linux-v4.19/Documentation/arm/OMAP/
Domap_pm112 DSPBridge expresses target DSP performance levels in terms of OPP IDs.
131 Customizing OPP for platform
133 Defining CONFIG_PM should enable OPP layer for the silicon
134 and the registration of OPP table should take place automatically.
135 However, in special cases, the default OPP table may need to be
139 * Disable an unsupported OPP on the platform
/Linux-v4.19/Documentation/cpu-freq/
Dcore.txt25 3. CPUFreq Table Generation with Operating Performance Point (OPP)
96 3. CPUFreq Table Generation with Operating Performance Point (OPP)
98 For details about OPP, see Documentation/power/opp.txt
102 the OPP layer's internal information about the available frequencies
/Linux-v4.19/arch/arm/mach-davinci/
Dda850.c544 #define OPP(freq) \ macro
551 OPP(456),
552 OPP(408),
553 OPP(372),
554 OPP(300),
555 OPP(200),
556 OPP(96),
/Linux-v4.19/arch/arm/boot/dts/
Dam335x-boneblack.dts23 * to support 1GHz OPP so enable it for PG 2.0 on this board.
Dam335x-osd335x-common.dtsi28 * the HW OPP table, the silicon looks like it is Revision 1.0 (ie the
Dam437x-idk-evm.dts526 * disable it and set opp100 as suspend OPP.
/Linux-v4.19/drivers/cpufreq/
DKconfig.arm252 This driver uses the generic OPP framework to match the running
/Linux-v4.19/Documentation/devicetree/bindings/devfreq/
Dexynos-bus.txt39 - operating-points-v2: the OPP table including frequency/voltage information
/Linux-v4.19/Documentation/devicetree/bindings/thermal/
Dthermal.txt205 * used as OPP indexes. The minimum cooling state is 0, which means
/Linux-v4.19/
DMAINTAINERS10843 OPERATING PERFORMANCE POINTS (OPP)