| /kernel/linux/linux-4.19/Documentation/admin-guide/pm/ |
| D | cpufreq.rst | 5 CPU Performance Scaling
12 The Concept of CPU Performance Scaling
41 to as CPU performance scaling or CPU frequency scaling (because it involves
45 CPU Performance Scaling in Linux
48 The Linux kernel supports CPU performance scaling by means of the ``CPUFreq``
49 (CPU Frequency scaling) subsystem that consists of three layers of code: the
50 core, scaling governors and scaling drivers.
53 interfaces for all platforms that support CPU performance scaling. It defines
56 Scaling governors implement algorithms to estimate the required CPU capacity.
57 As a rule, each governor implements one, possibly parametrized, scaling
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| D | intel_pstate.rst | 2 ``intel_pstate`` CPU Performance Scaling Driver
14 :doc:`CPU performance scaling subsystem <cpufreq>` in the Linux kernel
15 (``CPUFreq``). It is a scaling driver for the Sandy Bridge and later
48 ``sysfs`` which allows another ``CPUFreq`` scaling driver to be loaded and
67 In this mode the driver bypasses the scaling governors layer of ``CPUFreq`` and
68 provides its own scaling algorithms for P-state selection. Those algorithms
69 can be applied to ``CPUFreq`` policies in the same way as generic scaling
74 They are not generic scaling governors, but their names are the same as the
171 implemented by the generic ``schedutil`` scaling governor except that the
196 Then, the driver behaves like a regular ``CPUFreq`` scaling driver. That is,
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| /kernel/linux/linux-5.10/Documentation/admin-guide/pm/ |
| D | cpufreq.rst | 7 CPU Performance Scaling
15 The Concept of CPU Performance Scaling
44 to as CPU performance scaling or CPU frequency scaling (because it involves
48 CPU Performance Scaling in Linux
51 The Linux kernel supports CPU performance scaling by means of the ``CPUFreq``
52 (CPU Frequency scaling) subsystem that consists of three layers of code: the
53 core, scaling governors and scaling drivers.
56 interfaces for all platforms that support CPU performance scaling. It defines
59 Scaling governors implement algorithms to estimate the required CPU capacity.
60 As a rule, each governor implements one, possibly parametrized, scaling
[all …]
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| D | intel_pstate.rst | 5 ``intel_pstate`` CPU Performance Scaling Driver
17 :doc:`CPU performance scaling subsystem <cpufreq>` in the Linux kernel
18 (``CPUFreq``). It is a scaling driver for the Sandy Bridge and later
50 ``sysfs`` which allows another ``CPUFreq`` scaling driver to be loaded and
58 active mode, it uses its own internal performance scaling governor algorithm or
59 allows the hardware to do preformance scaling by itself, while in the passive
61 a certain performance scaling algorithm. Which of them will be in effect
73 In this mode the driver bypasses the scaling governors layer of ``CPUFreq`` and
74 provides its own scaling algorithms for P-state selection. Those algorithms
75 can be applied to ``CPUFreq`` policies in the same way as generic scaling
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| /kernel/linux/linux-4.19/drivers/gpu/drm/ |
| D | drm_rect.c | 146 * drm_rect_calc_hscale - calculate the horizontal scaling factor
149 * @min_hscale: minimum allowed horizontal scaling factor
150 * @max_hscale: maximum allowed horizontal scaling factor
152 * Calculate the horizontal scaling factor as
160 * The horizontal scaling factor, or errno of out of limits.
181 * drm_rect_calc_vscale - calculate the vertical scaling factor
184 * @min_vscale: minimum allowed vertical scaling factor
185 * @max_vscale: maximum allowed vertical scaling factor
187 * Calculate the vertical scaling factor as
195 * The vertical scaling factor, or errno of out of limits.
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| /kernel/linux/linux-5.10/drivers/cpufreq/ |
| D | Kconfig.arm | 3 # ARM CPU Frequency scaling drivers
48 Armada8K device has the AP806 which supports scaling
78 ("AVS") to handle voltage and frequency scaling. This driver provides
120 tristate "CPU Frequency scaling support for MediaTek SoCs"
200 CPU Frequency scaling support for S3C2410
208 CPU Frequency scaling support for S3C2412 and S3C2413 SoC CPUs.
211 bool "S3C2416 CPU Frequency scaling support"
217 voltage scaling mode in which it is possible to reduce the
223 bool "Allow voltage scaling for S3C2416 arm core"
226 Enable CPU voltage scaling when entering the dvs mode.
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| /kernel/linux/linux-4.19/drivers/cpufreq/ |
| D | Kconfig.arm | 2 # ARM CPU Frequency scaling drivers
69 ("AVS") to handle voltage and frequency scaling. This driver provides
101 tristate "CPU Frequency scaling support for MediaTek SoCs"
164 CPU Frequency scaling support for S3C2410
172 CPU Frequency scaling support for S3C2412 and S3C2413 SoC CPUs.
175 bool "S3C2416 CPU Frequency scaling support"
181 voltage scaling mode in which it is possible to reduce the
187 bool "Allow voltage scaling for S3C2416 arm core"
190 Enable CPU voltage scaling when entering the dvs mode.
197 bool "S3C2440/S3C2442 CPU Frequency scaling support"
[all …]
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| /kernel/linux/linux-5.10/Documentation/userspace-api/media/v4l/ |
| D | crop.rst | 6 Image Cropping, Insertion and Scaling -- the CROP API
20 abilities cropping and scaling. Some video output devices can scale an
33 Scaling requires a source and a target. On a video capture or overlay
48 support scaling or the :ref:`VIDIOC_G_CROP <VIDIOC_G_CROP>` and
68 Image Cropping, Insertion and Scaling
70 The cropping, insertion and scaling process
108 Scaling Adjustments
111 Video hardware can have various cropping, insertion and scaling
112 limitations. It may only scale up or down, support only discrete scaling
113 factors, or have different scaling abilities in horizontal and vertical
[all …]
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| D | dev-subdev.rst | 101 :ref:`pipeline-scaling`, where image scaling can be performed on both
105 .. _pipeline-scaling:
118 scaling on the sensor is required to achieve higher frame rates.
193 - Sub-devices that scale frames using variable scaling factors should
195 modified. If the 1:1 scaling ratio is supported, this means that
206 for the pipeline described in :ref:`pipeline-scaling` (table columns
335 Selections: cropping, scaling and composition
358 The scaling operation changes the size of the image by scaling it to new
359 dimensions. The scaling ratio isn't specified explicitly, but is implied
363 Scaling support is optional. When supported by a subdev, the crop
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| D | selection-api-configuration.rst | 11 Video hardware can have various cropping, composing and scaling
12 limitations. It may only scale up or down, support only discrete scaling
13 factors, or have different scaling abilities in the horizontal and
14 vertical directions. Also it may not support scaling at all. At the same
130 Scaling control
133 An application can detect if scaling is performed by comparing the width
136 scaling is applied. The application can compute the scaling ratios using
|
| /kernel/linux/linux-4.19/Documentation/media/uapi/v4l/ |
| D | crop.rst | 6 Image Cropping, Insertion and Scaling -- the CROP API
20 abilities cropping and scaling. Some video output devices can scale an
33 Scaling requires a source and a target. On a video capture or overlay
48 support scaling or the :ref:`VIDIOC_G_CROP <VIDIOC_G_CROP>` and
68 Image Cropping, Insertion and Scaling
70 The cropping, insertion and scaling process
108 Scaling Adjustments
111 Video hardware can have various cropping, insertion and scaling
112 limitations. It may only scale up or down, support only discrete scaling
113 factors, or have different scaling abilities in horizontal and vertical
[all …]
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| D | dev-subdev.rst | 96 :ref:`pipeline-scaling`, where image scaling can be performed on both
100 .. _pipeline-scaling:
113 scaling on the sensor is required to achieve higher frame rates.
188 - Sub-devices that scale frames using variable scaling factors should
190 modified. If the 1:1 scaling ratio is supported, this means that
201 for the pipeline described in :ref:`pipeline-scaling` (table columns
290 Selections: cropping, scaling and composition
313 The scaling operation changes the size of the image by scaling it to new
314 dimensions. The scaling ratio isn't specified explicitly, but is implied
318 Scaling support is optional. When supported by a subdev, the crop
[all …]
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| D | selection-api-configuration.rst | 11 Video hardware can have various cropping, composing and scaling
12 limitations. It may only scale up or down, support only discrete scaling
13 factors, or have different scaling abilities in the horizontal and
14 vertical directions. Also it may not support scaling at all. At the same
130 Scaling control
133 An application can detect if scaling is performed by comparing the width
136 scaling is applied. The application can compute the scaling ratios using
|
| /kernel/linux/linux-4.19/drivers/media/i2c/ |
| D | saa711x_regs.h | 112 /* Horizontal phase scaling */
120 /* Vertical scaling */
159 /* Horizontal phase scaling */
166 /* Vertical scaling */
422 /* Task A: Horizontal phase scaling */
424 "Task A: Horizontal luminance scaling increment"},
429 "Task A: Horizontal chrominance scaling increment"},
434 /* Task A: Vertical scaling */
436 "Task A: Vertical luminance scaling increment"},
438 "Task A: Vertical chrominance scaling increment"},
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| /kernel/linux/linux-5.10/drivers/media/i2c/ |
| D | saa711x_regs.h | 112 /* Horizontal phase scaling */
120 /* Vertical scaling */
159 /* Horizontal phase scaling */
166 /* Vertical scaling */
422 /* Task A: Horizontal phase scaling */
424 "Task A: Horizontal luminance scaling increment"},
429 "Task A: Horizontal chrominance scaling increment"},
434 /* Task A: Vertical scaling */
436 "Task A: Vertical luminance scaling increment"},
438 "Task A: Vertical chrominance scaling increment"},
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| /kernel/linux/linux-5.10/arch/arm64/boot/dts/qcom/ |
| D | pms405.dtsi | 93 qcom,pre-scaling = <1 1>;
98 qcom,pre-scaling = <1 1>;
103 qcom,pre-scaling = <1 3>;
108 qcom,pre-scaling = <1 1>;
115 qcom,pre-scaling = <1 1>;
122 qcom,pre-scaling = <1 1>;
129 qcom,pre-scaling = <1 1>;
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| /kernel/linux/linux-5.10/drivers/media/platform/vsp1/ |
| D | vsp1_uds.c | 37 * Scaling Computation
50 * uds_output_size - Return the output size for an input size and scaling ratio
52 * @ratio: scaling ratio in U4.12 fixed-point format
57 /* Down-scaling */ in uds_output_size()
65 /* Up-scaling */ in uds_output_size()
84 * uds_passband_width - Return the passband filter width for a scaling ratio
85 * @ratio: scaling ratio in U4.12 fixed-point format
90 /* Down-scaling */ in uds_passband_width()
98 /* Up-scaling */ in uds_passband_width()
281 * Multi-tap scaling can't be enabled along with alpha scaling when in uds_configure_stream()
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| /kernel/linux/linux-5.10/drivers/staging/media/atomisp/pci/ |
| D | ia_css_types.h | 152 * Before the shading correction is applied, NxN-filter and/or scaling
158 * - Down-scaling/Up-scaling factor
180 * In some isp binaries, the bayer scaling is applied before the shading correction is applied.
181 * Then, this scaling factor should be considered in generating the shading table.
182 * The scaling factor is expressed by these parameters.
189 * This is the size BEFORE the bayer scaling is applied.
194 * The size of this area assumes the size AFTER the bayer scaling is applied
276 …* 2. process: Driver applies the sensor cropping/binning/scaling to physical sensor si…
279 …* 4. process: ISP applies the bayer scaling by the factor of shading_info.bayer_scale_…
280 * 5. sensor data size: Scaling factor * ISP input size (== shading_info.sensor_data_res_bqs)
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| /kernel/linux/linux-5.10/Documentation/devicetree/bindings/input/ |
| D | microchip,qt1050.txt | 41 - microchip,average-scaling:
42 The scaling factor which is used to scale the average-samples.
61 microchip,average-scaling = <16>;
69 microchip,average-scaling = <8>;
76 microchip,average-scaling = <16>;
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| /kernel/linux/linux-4.19/drivers/media/platform/vsp1/ |
| D | vsp1_uds.c | 37 * Scaling Computation
50 * uds_output_size - Return the output size for an input size and scaling ratio
52 * @ratio: scaling ratio in U4.12 fixed-point format
57 /* Down-scaling */ in uds_output_size()
65 /* Up-scaling */ in uds_output_size()
84 * uds_passband_width - Return the passband filter width for a scaling ratio
85 * @ratio: scaling ratio in U4.12 fixed-point format
90 /* Down-scaling */ in uds_passband_width()
98 /* Up-scaling */ in uds_passband_width()
280 * Multi-tap scaling can't be enabled along with alpha scaling when in uds_configure_stream()
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| /kernel/linux/linux-5.10/drivers/gpu/drm/ |
| D | drm_rect.c | 84 * the corresponding amounts, retaining the vertical and horizontal scaling
153 * drm_rect_calc_hscale - calculate the horizontal scaling factor
156 * @min_hscale: minimum allowed horizontal scaling factor
157 * @max_hscale: maximum allowed horizontal scaling factor
159 * Calculate the horizontal scaling factor as
167 * The horizontal scaling factor, or errno of out of limits.
188 * drm_rect_calc_vscale - calculate the vertical scaling factor
191 * @min_vscale: minimum allowed vertical scaling factor
192 * @max_vscale: maximum allowed vertical scaling factor
194 * Calculate the vertical scaling factor as
[all …]
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| /kernel/linux/linux-4.19/Documentation/cpu-freq/ |
| D | index.txt | 1 CPU frequency and voltage scaling code in the Linux(TM) kernel
13 Clock scaling allows you to change the clock speed of the CPUs on the
55 Clock and voltage scaling for the SA-1100:
56 * http://www.lartmaker.nl/projects/scaling
|
| /kernel/linux/linux-5.10/Documentation/cpu-freq/ |
| D | index.rst | 4 Linux CPUFreq - CPU frequency and voltage scaling code in the Linux(TM) kernel
9 Clock scaling allows you to change the clock speed of the CPUs on the
38 Clock and voltage scaling for the SA-1100:
39 * http://www.lartmaker.nl/projects/scaling
|
| /kernel/linux/linux-5.10/drivers/gpu/drm/selftests/ |
| D | test-drm_rect.c | 45 /* 1:1 scaling */ in igt_drm_rect_clip_scaled_not_clipped()
61 /* 2:1 scaling */ in igt_drm_rect_clip_scaled_not_clipped()
77 /* 1:2 scaling */ in igt_drm_rect_clip_scaled_not_clipped()
101 /* 1:1 scaling top/left clip */ in igt_drm_rect_clip_scaled_clipped()
117 /* 1:1 scaling bottom/right clip */ in igt_drm_rect_clip_scaled_clipped()
133 /* 2:1 scaling top/left clip */ in igt_drm_rect_clip_scaled_clipped()
149 /* 2:1 scaling bottom/right clip */ in igt_drm_rect_clip_scaled_clipped()
165 /* 1:2 scaling top/left clip */ in igt_drm_rect_clip_scaled_clipped()
181 /* 1:2 scaling bottom/right clip */ in igt_drm_rect_clip_scaled_clipped()
|
| /kernel/linux/linux-4.19/drivers/clk/meson/ |
| D | Kconfig | 29 want peripherals and CPU frequency scaling to work.
38 Say Y if you want peripherals and CPU frequency scaling to work.
47 Say Y if you want peripherals and CPU frequency scaling to work.
|