| /Linux-v5.10/Documentation/devicetree/bindings/arm/ |
| D | cpu-capacity.txt | 2 ARM CPUs capacity bindings
6 1 - Introduction
15 2 - CPU capacity definition
18 CPU capacity is a number that provides the scheduler information about CPUs
19 heterogeneity. Such heterogeneity can come from micro-architectural differences
23 capture a first-order approximation of the relative performance of CPUs.
27 final capacity should, however, be:
29 * A "single-threaded" or CPU affine benchmark
37 max frequency (with caches enabled). The obtained DMIPS score is then divided
38 by the frequency (in MHz) at which the benchmark has been run, so that
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| D | cpus.yaml | 1 # SPDX-License-Identifier: GPL-2.0
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
21 with updates for 32-bit and 64-bit ARM systems provided in this document.
30 - square brackets define bitfields, eg reg[7:0] value of the bitfield in
59 On 32-bit ARM v7 or later systems this property is
68 On ARM v8 64-bit systems this property is required
71 * If cpus node's #address-cells property is set to 2
79 * If cpus node's #address-cells property is set to 1
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| /Linux-v5.10/arch/arm/boot/dts/ |
| D | exynos5420-cpus.dtsi | 1 // SPDX-License-Identifier: GPL-2.0
14 * Exynos5420 and Exynos5800 always boot from Cortex-A15. On Exynos5422
16 * the gpg2-1 GPIO. By default all Exynos5422 based boards choose booting
17 * from the LITTLE: Cortex-A7.
22 #address-cells = <1>;
23 #size-cells = <0>;
27 compatible = "arm,cortex-a15";
30 clock-frequency = <1800000000>;
31 cci-control-port = <&cci_control1>;
32 operating-points-v2 = <&cluster_a15_opp_table>;
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| D | exynos5422-cpus.dtsi | 1 // SPDX-License-Identifier: GPL-2.0
13 * Exynos5420 and Exynos5800 always boot from Cortex-A15. On Exynos5422
15 * the gpg2-1 GPIO. By default all Exynos5422 based boards choose booting
16 * from the LITTLE: Cortex-A7.
21 #address-cells = <1>;
22 #size-cells = <0>;
26 compatible = "arm,cortex-a7";
29 clock-frequency = <1000000000>;
30 cci-control-port = <&cci_control0>;
31 operating-points-v2 = <&cluster_a7_opp_table>;
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| D | vexpress-v2p-ca15_a7.dts | 1 // SPDX-License-Identifier: GPL-2.0
6 * Cortex-A15_A7 MPCore (V2P-CA15_A7)
8 * HBI-0249A
11 /dts-v1/;
12 #include "vexpress-v2m-rs1.dtsi"
15 model = "V2P-CA15_CA7";
18 compatible = "arm,vexpress,v2p-ca15_a7", "arm,vexpress";
19 interrupt-parent = <&gic>;
20 #address-cells = <2>;
21 #size-cells = <2>;
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| D | r8a7790.dtsi | 1 // SPDX-License-Identifier: GPL-2.0
3 * Device Tree Source for the R-Car H2 (R8A77900) SoC
6 * Copyright (C) 2013-2014 Renesas Solutions Corp.
10 #include <dt-bindings/clock/r8a7790-cpg-mssr.h>
11 #include <dt-bindings/interrupt-controller/arm-gic.h>
12 #include <dt-bindings/interrupt-controller/irq.h>
13 #include <dt-bindings/power/r8a7790-sysc.h>
17 #address-cells = <2>;
18 #size-cells = <2>;
46 compatible = "fixed-clock";
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| /Linux-v5.10/arch/arm64/boot/dts/amlogic/ |
| D | meson-g12b.dtsi | 1 // SPDX-License-Identifier: (GPL-2.0+ OR MIT)
7 #include "meson-g12.dtsi"
13 #address-cells = <0x2>;
14 #size-cells = <0x0>;
16 cpu-map {
48 compatible = "arm,cortex-a53";
50 enable-method = "psci";
51 capacity-dmips-mhz = <592>;
52 next-level-cache = <&l2>;
53 #cooling-cells = <2>;
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| /Linux-v5.10/arch/arm64/boot/dts/qcom/ |
| D | sdm660.dtsi | 1 // SPDX-License-Identifier: GPL-2.0-only
7 #include <dt-bindings/interrupt-controller/arm-gic.h>
8 #include <dt-bindings/clock/qcom,gcc-sdm660.h>
11 interrupt-parent = <&intc>;
13 #address-cells = <2>;
14 #size-cells = <2>;
20 compatible = "fixed-clock";
21 #clock-cells = <0>;
22 clock-frequency = <19200000>;
23 clock-output-names = "xo_board";
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| D | sdm630.dtsi | 1 // SPDX-License-Identifier: BSD-3-Clause
6 #include <dt-bindings/clock/qcom,gcc-sdm660.h>
7 #include <dt-bindings/clock/qcom,rpmcc.h>
8 #include <dt-bindings/gpio/gpio.h>
9 #include <dt-bindings/interrupt-controller/arm-gic.h>
12 interrupt-parent = <&intc>;
14 #address-cells = <2>;
15 #size-cells = <2>;
21 compatible = "fixed-clock";
22 #clock-cells = <0>;
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| D | sc7180.dtsi | 1 // SPDX-License-Identifier: BSD-3-Clause
8 #include <dt-bindings/clock/qcom,dispcc-sc7180.h>
9 #include <dt-bindings/clock/qcom,gcc-sc7180.h>
10 #include <dt-bindings/clock/qcom,gpucc-sc7180.h>
11 #include <dt-bindings/clock/qcom,lpasscorecc-sc7180.h>
12 #include <dt-bindings/clock/qcom,rpmh.h>
13 #include <dt-bindings/clock/qcom,videocc-sc7180.h>
14 #include <dt-bindings/interconnect/qcom,osm-l3.h>
15 #include <dt-bindings/interconnect/qcom,sc7180.h>
16 #include <dt-bindings/interrupt-controller/arm-gic.h>
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| D | msm8996.dtsi | 1 // SPDX-License-Identifier: GPL-2.0-only
2 /* Copyright (c) 2014-2015, The Linux Foundation. All rights reserved.
5 #include <dt-bindings/interrupt-controller/arm-gic.h>
6 #include <dt-bindings/clock/qcom,gcc-msm8996.h>
7 #include <dt-bindings/clock/qcom,mmcc-msm8996.h>
8 #include <dt-bindings/clock/qcom,rpmcc.h>
9 #include <dt-bindings/soc/qcom,apr.h>
12 interrupt-parent = <&intc>;
14 #address-cells = <2>;
15 #size-cells = <2>;
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| /Linux-v5.10/arch/arm64/boot/dts/arm/ |
| D | juno-r2.dts | 9 /dts-v1/;
11 #include <dt-bindings/interrupt-controller/arm-gic.h>
12 #include "juno-base.dtsi"
13 #include "juno-cs-r1r2.dtsi"
17 compatible = "arm,juno-r2", "arm,juno", "arm,vexpress";
18 interrupt-parent = <&gic>;
19 #address-cells = <2>;
20 #size-cells = <2>;
27 stdout-path = "serial0:115200n8";
31 compatible = "arm,psci-0.2";
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| D | juno.dts | 4 * Copyright (c) 2013-2014 ARM Ltd.
9 /dts-v1/;
11 #include <dt-bindings/interrupt-controller/arm-gic.h>
12 #include "juno-base.dtsi"
17 interrupt-parent = <&gic>;
18 #address-cells = <2>;
19 #size-cells = <2>;
26 stdout-path = "serial0:115200n8";
30 compatible = "arm,psci-0.2";
35 #address-cells = <2>;
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| D | juno-r1.dts | 9 /dts-v1/;
11 #include <dt-bindings/interrupt-controller/arm-gic.h>
12 #include "juno-base.dtsi"
13 #include "juno-cs-r1r2.dtsi"
17 compatible = "arm,juno-r1", "arm,juno", "arm,vexpress";
18 interrupt-parent = <&gic>;
19 #address-cells = <2>;
20 #size-cells = <2>;
27 stdout-path = "serial0:115200n8";
31 compatible = "arm,psci-0.2";
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| /Linux-v5.10/arch/arm64/boot/dts/mediatek/ |
| D | mt8183.dtsi | 1 // SPDX-License-Identifier: (GPL-2.0 OR MIT)
8 #include <dt-bindings/clock/mt8183-clk.h>
9 #include <dt-bindings/interrupt-controller/arm-gic.h>
10 #include <dt-bindings/interrupt-controller/irq.h>
11 #include <dt-bindings/reset-controller/mt8183-resets.h>
12 #include <dt-bindings/phy/phy.h>
13 #include "mt8183-pinfunc.h"
17 interrupt-parent = <&sysirq>;
18 #address-cells = <2>;
19 #size-cells = <2>;
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| D | mt8173.dtsi | 14 #include <dt-bindings/clock/mt8173-clk.h>
15 #include <dt-bindings/interrupt-controller/irq.h>
16 #include <dt-bindings/interrupt-controller/arm-gic.h>
17 #include <dt-bindings/memory/mt8173-larb-port.h>
18 #include <dt-bindings/phy/phy.h>
19 #include <dt-bindings/power/mt8173-power.h>
20 #include <dt-bindings/reset/mt8173-resets.h>
21 #include <dt-bindings/gce/mt8173-gce.h>
22 #include <dt-bindings/thermal/thermal.h>
23 #include "mt8173-pinfunc.h"
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| /Linux-v5.10/Documentation/devicetree/bindings/thermal/ |
| D | thermal-idle.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
4 ---
5 $id: http://devicetree.org/schemas/thermal/thermal-idle.yaml#
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
11 - Daniel Lezcano <daniel.lezcano@linaro.org>
22 const: thermal-idle
24 A thermal-idle node describes the idle cooling device properties to
27 '#cooling-cells':
31 the cooling-maps reference. The first cell is the minimum cooling state
34 duration-us:
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| D | thermal-cooling-devices.yaml | 1 # SPDX-License-Identifier: (GPL-2.0)
4 ---
5 $id: http://devicetree.org/schemas/thermal/thermal-cooling-devices.yaml#
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
11 - Amit Kucheria <amitk@kernel.org>
20 - thermal-sensor: device that measures temperature, has SoC-specific bindings
21 - cooling-device: device used to dissipate heat either passively or actively
22 - thermal-zones: a container of the following node types used to describe all
28 - Passive cooling: by means of regulating device performance. A typical
31 - Active cooling: by means of activating devices in order to remove the
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| /Linux-v5.10/arch/arm64/boot/dts/hisilicon/ |
| D | hi3660.dtsi | 1 // SPDX-License-Identifier: GPL-2.0
8 #include <dt-bindings/interrupt-controller/arm-gic.h>
9 #include <dt-bindings/clock/hi3660-clock.h>
10 #include <dt-bindings/thermal/thermal.h>
14 interrupt-parent = <&gic>;
15 #address-cells = <2>;
16 #size-cells = <2>;
19 compatible = "arm,psci-0.2";
24 #address-cells = <2>;
25 #size-cells = <0>;
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| /Linux-v5.10/drivers/base/ |
| D | arch_topology.c | 1 // SPDX-License-Identifier: GPL-2.0
61 void topology_set_cpu_scale(unsigned int cpu, unsigned long capacity) in topology_set_cpu_scale() argument
63 per_cpu(cpu_scale, cpu) = capacity; in topology_set_cpu_scale()
83 return sysfs_emit(buf, "%lu\n", topology_get_cpu_scale(cpu->dev.id)); in cpu_capacity_show()
142 u64 capacity; in topology_normalize_cpu_scale() local
151 capacity = raw_capacity[cpu] * per_cpu(freq_factor, cpu); in topology_normalize_cpu_scale()
152 capacity_scale = max(capacity, capacity_scale); in topology_normalize_cpu_scale()
157 capacity = raw_capacity[cpu] * per_cpu(freq_factor, cpu); in topology_normalize_cpu_scale()
158 capacity = div64_u64(capacity << SCHED_CAPACITY_SHIFT, in topology_normalize_cpu_scale()
160 topology_set_cpu_scale(cpu, capacity); in topology_normalize_cpu_scale()
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| /Linux-v5.10/Documentation/scheduler/ |
| D | sched-capacity.rst | 2 Capacity Aware Scheduling
5 1. CPU Capacity
9 ----------------
13 different performance characteristics - on such platforms, not all CPUs can be
16 CPU capacity is a measure of the performance a CPU can reach, normalized against
18 asymmetric CPU capacity systems, as they contain CPUs of different capacities.
20 Disparity in maximum attainable performance (IOW in maximum CPU capacity) stems
23 - not all CPUs may have the same microarchitecture (µarch).
24 - with Dynamic Voltage and Frequency Scaling (DVFS), not all CPUs may be
28 performance-oriented than the LITTLE ones (more pipeline stages, bigger caches,
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| /Linux-v5.10/arch/arm64/boot/dts/renesas/ |
| D | r8a774e1.dtsi | 1 // SPDX-License-Identifier: GPL-2.0
8 #include <dt-bindings/interrupt-controller/irq.h>
9 #include <dt-bindings/interrupt-controller/arm-gic.h>
10 #include <dt-bindings/clock/r8a774e1-cpg-mssr.h>
11 #include <dt-bindings/power/r8a774e1-sysc.h>
17 #address-cells = <2>;
18 #size-cells = <2>;
26 compatible = "fixed-clock";
27 #clock-cells = <0>;
28 clock-frequency = <0>;
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| D | r8a77961.dtsi | 1 // SPDX-License-Identifier: GPL-2.0
3 * Device Tree Source for the R-Car M3-W+ (R8A77961) SoC
5 * Copyright (C) 2016-2017 Renesas Electronics Corp.
8 #include <dt-bindings/clock/r8a77961-cpg-mssr.h>
9 #include <dt-bindings/interrupt-controller/arm-gic.h>
10 #include <dt-bindings/power/r8a77961-sysc.h>
16 #address-cells = <2>;
17 #size-cells = <2>;
25 compatible = "fixed-clock";
26 #clock-cells = <0>;
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| D | r8a77951.dtsi | 1 // SPDX-License-Identifier: GPL-2.0
3 * Device Tree Source for the R-Car H3 (R8A77951) SoC
8 #include <dt-bindings/clock/r8a7795-cpg-mssr.h>
9 #include <dt-bindings/interrupt-controller/arm-gic.h>
10 #include <dt-bindings/power/r8a7795-sysc.h>
16 #address-cells = <2>;
17 #size-cells = <2>;
36 compatible = "fixed-clock";
37 #clock-cells = <0>;
38 clock-frequency = <0>;
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| /Linux-v5.10/arch/arm64/boot/dts/rockchip/ |
| D | rk3399.dtsi | 1 // SPDX-License-Identifier: (GPL-2.0+ OR MIT)
6 #include <dt-bindings/clock/rk3399-cru.h>
7 #include <dt-bindings/gpio/gpio.h>
8 #include <dt-bindings/interrupt-controller/arm-gic.h>
9 #include <dt-bindings/interrupt-controller/irq.h>
10 #include <dt-bindings/pinctrl/rockchip.h>
11 #include <dt-bindings/power/rk3399-power.h>
12 #include <dt-bindings/thermal/thermal.h>
17 interrupt-parent = <&gic>;
18 #address-cells = <2>;
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