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/openbmc/linux/Documentation/devicetree/bindings/opp/
H A Dopp-v2-base.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/opp/opp-v2-base.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Generic OPP (Operating Performance Points) Common Properties
10 - Viresh Kumar <viresh.kumar@linaro.org>
13 Devices work at voltage-current-frequency combinations and some implementations
25 pattern: '^opp-table(-[a-z0-9]+)?$'
27 opp-shared:
29 Indicates that device nodes using this OPP Table Node's phandle switch
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H A Dti,omap-opp-supply.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/opp/ti,omap-opp-supply.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Texas Instruments OMAP compatible OPP supply
11 registers, which contain OPP-specific voltage information tailored
12 for the specific device. This binding provides the information
14 the primary regulator during an OPP transition.
16 Also, some supplies may have an associated vbb-supply, an Adaptive
17 Body Bias regulator, which must transition in a specific sequence
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/openbmc/linux/drivers/opp/
H A Ddebugfs.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * Generic OPP debugfs interface
5 * Copyright (C) 2015-2016 Viresh Kumar <viresh.kumar@linaro.org>
18 #include "opp.h"
24 if (dev->parent) in opp_set_dev_name()
25 snprintf(name, NAME_MAX, "%s-%s", dev_name(dev->parent), in opp_set_dev_name()
31 void opp_debug_remove_one(struct dev_pm_opp *opp) in opp_debug_remove_one() argument
33 debugfs_remove_recursive(opp->dentry); in opp_debug_remove_one()
39 struct icc_path *path = fp->private_data; in bw_name_read()
56 static void opp_debug_create_bw(struct dev_pm_opp *opp, in opp_debug_create_bw() argument
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H A Dti-opp-supply.c1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (C) 2016-2017 Texas Instruments Incorporated - https://www.ti.com/
5 * Dave Gerlach <d-gerlach@ti.com>
7 * TI OPP supply driver that provides override into the regulator control
8 * for generic opp core to handle devices with ABB regulator and/or
25 * struct ti_opp_supply_optimum_voltage_table - optimized voltage table
35 * struct ti_opp_supply_data - OMAP specific opp supply data
39 * @old_supplies: Placeholder for supplies information for old OPP.
40 * @new_supplies: Placeholder for supplies information for new OPP.
53 * struct ti_opp_supply_of_data - device tree match data
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H A Dopp.h1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * Generic OPP Interface
5 * Copyright (C) 2009-2010 Texas Instruments Incorporated.
26 /* Lock to allow exclusive modification to the device and opp lists */
31 /* OPP Config flags */
40 * struct opp_config_data - data for set config operations
41 * @opp_table: OPP table
42 * @flags: OPP config flags
44 * This structure stores the OPP config information for each OPP table
53 * Internal data structure organization with the OPP layer library is as
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H A Dcore.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * Generic OPP Interface
5 * Copyright (C) 2009-2010 Texas Instruments Incorporated.
23 #include "opp.h"
26 * The root of the list of all opp-tables. All opp_table structures branch off
32 /* Lock to allow exclusive modification to the device and opp lists */
37 /* OPP ID allocator */
45 mutex_lock(&opp_table->lock); in _find_opp_dev()
46 list_for_each_entry(opp_dev, &opp_table->dev_list, node) in _find_opp_dev()
47 if (opp_dev->dev == dev) { in _find_opp_dev()
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/openbmc/linux/Documentation/driver-api/thermal/
H A Dcpu-idle-cooling.rst1 .. SPDX-License-Identifier: GPL-2.0
8 ----------
24 Last but not least, the system can ask for a specific power budget but
25 because of the OPP density, we can only choose an OPP with a power
26 budget lower than the requested one and under-utilize the CPU, thus
27 losing performance. In other words, one OPP under-utilizes the CPU
28 with a power less than the requested power budget and the next OPP
29 exceeds the power budget. An intermediate OPP could have been used if
33 ----------
35 If we can remove the static and the dynamic leakage for a specific
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/openbmc/linux/arch/arm/mach-omap2/
H A Domap_opp_data.h1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * OMAP SoC specific OPP Data helpers
5 * Copyright (C) 2009-2010 Texas Instruments Incorporated - https://www.ti.com/
20 * USE the following ONLY in opp data initialization common to an SoC.
25 * struct omap_opp_def - OMAP OPP Definition
27 * @freq: Frequency in hertz corresponding to this OPP
28 * @u_volt: Nominal voltage in microvolts corresponding to this OPP
29 * @default_available: True/false - is this OPP available by default
33 * Operating Points or OPP. The actual definitions of OMAP Operating Points
34 * varies over silicon within the same family of devices. For a specific
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/openbmc/linux/arch/arm/boot/dts/samsung/
H A Dexynos5800.dtsi1 // SPDX-License-Identifier: GPL-2.0
10 * values for board specific bindings.
20 compatible = "samsung,exynos5800-clock", "syscon";
24 opp-2000000000 {
25 opp-hz = /bits/ 64 <2000000000>;
26 opp-microvolt = <1312500 1312500 1500000>;
27 clock-latency-ns = <140000>;
29 opp-1900000000 {
30 opp-hz = /bits/ 64 <1900000000>;
31 opp-microvolt = <1262500 1262500 1500000>;
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H A Dexynos4212.dtsi1 // SPDX-License-Identifier: GPL-2.0
9 * based board files can include this file and provide values for board specific
23 #address-cells = <1>;
24 #size-cells = <0>;
26 cpu-map {
39 compatible = "arm,cortex-a9";
42 clock-names = "cpu";
43 operating-points-v2 = <&cpu0_opp_table>;
44 #cooling-cells = <2>; /* min followed by max */
49 compatible = "arm,cortex-a9";
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H A Dexynos4412.dtsi1 // SPDX-License-Identifier: GPL-2.0
9 * based board files can include this file and provide values for board specific
23 #address-cells = <1>;
24 #size-cells = <0>;
26 cpu-map {
45 compatible = "arm,cortex-a9";
48 clock-names = "cpu";
49 operating-points-v2 = <&cpu0_opp_table>;
50 #cooling-cells = <2>; /* min followed by max */
55 compatible = "arm,cortex-a9";
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H A Dexynos4210.dtsi1 // SPDX-License-Identifier: GPL-2.0
5 * Copyright (c) 2010-2011 Samsung Electronics Co., Ltd.
7 * Copyright (c) 2010-2011 Linaro Ltd.
11 * based board files can include this file and provide values for board specific
20 #include "exynos4-cpu-thermal.dtsi"
31 bus_acp: bus-acp {
32 compatible = "samsung,exynos-bus";
34 clock-names = "bus";
35 operating-points-v2 = <&bus_acp_opp_table>;
38 bus_acp_opp_table: opp-table {
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H A Dexynos4x12.dtsi1 // SPDX-License-Identifier: GPL-2.0
10 * values for SoCs specific bindings.
19 #include "exynos4-cpu-thermal.dtsi"
27 fimc-lite0 = &fimc_lite_0;
28 fimc-lite1 = &fimc_lite_1;
31 bus_acp: bus-acp {
32 compatible = "samsung,exynos-bus";
34 clock-names = "bus";
35 operating-points-v2 = <&bus_acp_opp_table>;
38 bus_acp_opp_table: opp-table {
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/openbmc/linux/Documentation/devicetree/bindings/interconnect/
H A Dmediatek,cci.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Jia-Wei Chang <jia-wei.chang@mediatek.com>
11 - Johnson Wang <johnson.wang@mediatek.com>
21 - mediatek,mt8183-cci
22 - mediatek,mt8186-cci
26 - description:
28 - description:
33 clock-names:
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H A Dfsl,imx8m-noc.yaml1 # SPDX-License-Identifier: GPL-2.0
3 ---
4 $id: http://devicetree.org/schemas/interconnect/fsl,imx8m-noc.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Peng Fan <peng.fan@nxp.com>
18 for normal (non-secure) world.
20 The buses are based on externally licensed IPs such as ARM NIC-301 and
21 Arteris FlexNOC but DT bindings are specific to the integration of these bus
27 - items:
28 - enum:
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/openbmc/linux/Documentation/devicetree/bindings/cpufreq/
H A Dcpufreq-st.txt5 from the SoC, then supplies the OPP framework with 'prop' and 'supported
10 ----------------------
12 No vendor specific driver required for this.
16 - operating-points : [See: ../power/opp-v1.yaml]
19 --------------
24 operating-points = <1500000 0
32 --------------------------------------------
38 - operating-points-v2 : [See ../power/opp-v2.yaml]
41 ----------------
45 operating-points-v2 = <&cpu0_opp_table>;
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H A Dcpufreq-mediatek.txt5 - clocks: A list of phandle + clock-specifier pairs for the clocks listed in clock names.
6 - clock-names: Should contain the following:
7 "cpu" - The multiplexer for clock input of CPU cluster.
8 "intermediate" - A parent of "cpu" clock which is used as "intermediate" clock
11 Please refer to Documentation/devicetree/bindings/clock/clock-bindings.txt for
13 - operating-points-v2: Please refer to Documentation/devicetree/bindings/opp/opp-v2.yaml
15 - proc-supply: Regulator for Vproc of CPU cluster.
18 - sram-supply: Regulator for Vsram of CPU cluster. When present, the cpufreq driver
20 Vsram to fit SoC specific needs. When absent, the voltage scaling
23 - mediatek,cci:
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/openbmc/linux/Documentation/devicetree/bindings/mmc/
H A Dsdhci-msm.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/mmc/sdhci-msm.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Qualcomm SDHCI controller (sdhci-msm)
10 - Bhupesh Sharma <bhupesh.sharma@linaro.org>
19 - enum:
20 - qcom,sdhci-msm-v4
22 - items:
23 - enum:
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/openbmc/linux/Documentation/power/
H A Dopp.rst2 Operating Performance Points (OPP) Library
5 (C) 2009-2010 Nishanth Menon <nm@ti.com>, Texas Instruments Incorporated
10 2. Initial OPP List Registration
11 3. OPP Search Functions
12 4. OPP Availability Control Functions
13 5. OPP Data Retrieval Functions
19 1.1 What is an Operating Performance Point (OPP)?
20 -------------------------------------------------
22 Complex SoCs of today consists of a multiple sub-modules working in conjunction.
25 facilitate this, sub-modules in a SoC are grouped into domains, allowing some
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/openbmc/linux/Documentation/gpu/amdgpu/display/
H A Ddcn-overview.rst10 .. kernel-figure:: dc_pipeline_overview.svg
19 * **Display Pipe and Plane (DPP)**: This block provides pre-blend pixel
24 multiple planes, using global or per-pixel alpha.
26 * **Output Pixel Processing (OPP)**: Process and format pixels to be sent to
38 * **Multi-Media HUB (MMHUBBUB)**: Memory controller interface for DMCUB and DWB
43 the Display Micro-Controller Unit - version B (DMCUB), which is handled via
60 OPP. It is DC's responsibility to drive the best configuration for each
61 specific scenario. Orchestrate all of these components together requires a
79 that HUBP accesses a surface using a specific format read from memory, and our
84 ----------------------
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/openbmc/linux/include/linux/mfd/
H A Ddbx500-prcmu.h1 /* SPDX-License-Identifier: GPL-2.0-only */
14 #include <dt-bindings/mfd/dbx500-prcmu.h> /* For clock identifiers */
40 * - EPOD_ID_SVAMMDSP: power domain for SVA MMDSP
41 * - EPOD_ID_SVAPIPE: power domain for SVA pipe
42 * - EPOD_ID_SIAMMDSP: power domain for SIA MMDSP
43 * - EPOD_ID_SIAPIPE: power domain for SIA pipe
44 * - EPOD_ID_SGA: power domain for SGA
45 * - EPOD_ID_B2R2_MCDE: power domain for B2R2 and MCDE
46 * - EPOD_ID_ESRAM12: power domain for ESRAM 1 and 2
47 * - EPOD_ID_ESRAM34: power domain for ESRAM 3 and 4
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/openbmc/linux/drivers/gpu/drm/panfrost/
H A Dpanfrost_devfreq.c1 // SPDX-License-Identifier: GPL-2.0
7 #include <linux/nvmem-consumer.h>
19 last = pfdevfreq->time_last_update; in panfrost_devfreq_update_utilization()
21 if (pfdevfreq->busy_count > 0) in panfrost_devfreq_update_utilization()
22 pfdevfreq->busy_time += ktime_sub(now, last); in panfrost_devfreq_update_utilization()
24 pfdevfreq->idle_time += ktime_sub(now, last); in panfrost_devfreq_update_utilization()
26 pfdevfreq->time_last_update = now; in panfrost_devfreq_update_utilization()
32 struct dev_pm_opp *opp; in panfrost_devfreq_target() local
34 opp = devfreq_recommended_opp(dev, freq, flags); in panfrost_devfreq_target()
35 if (IS_ERR(opp)) in panfrost_devfreq_target()
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/openbmc/linux/include/linux/platform_data/
H A Dvoltage-omap.h1 /* SPDX-License-Identifier: GPL-2.0-only */
12 * struct omap_volt_data - Omap voltage specific data.
16 * the n-target value for the smartreflex module.
18 * differs at differnet opp and thus is linked
21 * field also differs according to the voltage/opp.
/openbmc/linux/include/linux/
H A Dpm_opp.h1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * Generic OPP Interface
5 * Copyright (C) 2009-2010 Texas Instruments Incorporated.
30 * struct dev_pm_opp_supply - Power supply voltage/current values
31 * @u_volt: Target voltage in microvolts corresponding to this OPP
32 * @u_volt_min: Minimum voltage in microvolts corresponding to this OPP
33 * @u_volt_max: Maximum voltage in microvolts corresponding to this OPP
49 * struct dev_pm_opp_icc_bw - Interconnect bandwidth values
50 * @avg: Average bandwidth corresponding to this OPP (in icc units)
51 * @peak: Peak bandwidth corresponding to this OPP (in icc units)
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/openbmc/linux/Documentation/arch/arm/omap/
H A Domap_pm.rst13 - support the range of power management parameters present in the TI SRF;
15 - separate the drivers from the underlying PM parameter
19 - specify PM parameters in terms of fundamental units, such as
20 latency and throughput, rather than units which are specific to OMAP
23 - allow drivers which are shared with other architectures (e.g.,
24 DaVinci) to add these constraints in a way which won't affect non-OMAP
27 - can be implemented immediately with minimal disruption of other
36 (*pdata->set_max_mpu_wakeup_lat)(struct device *dev, unsigned long t)
40 (*pdata->set_max_dev_wakeup_lat)(struct device *dev, unsigned long t)
44 (*pdata->set_max_sdma_lat)(struct device *dev, long t)
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