| /kernel/linux/linux-5.10/Documentation/admin-guide/pm/ |
| D | intel-speed-select.rst | 1 .. SPDX-License-Identifier: GPL-2.0
14 - https://www.intel.com/content/www/us/en/architecture-and-technology/speed-select-technology-artic…
15 - https://builders.intel.com/docs/networkbuilders/intel-speed-select-technology-base-frequency-enha…
19 dynamically without pre-configuring via BIOS setup options. This dynamic
29 intel-speed-select configuration tool
32 Most Linux distribution packages may include the "intel-speed-select" tool. If not,
38 # cd tools/power/x86/intel-speed-select/
43 ------------
47 # intel-speed-select --help
49 The top-level help describes arguments and features. Notice that there is a
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| /kernel/linux/linux-6.6/drivers/cpufreq/ |
| D | freq_table.c | 1 // SPDX-License-Identifier: GPL-2.0-only
5 * Copyright (C) 2002 - 2003 Dominik Brodowski
14 * FREQUENCY TABLE HELPERS *
19 struct cpufreq_frequency_table *pos, *table = policy->freq_table; in policy_has_boost_freq()
25 if (pos->flags & CPUFREQ_BOOST_FREQ) in policy_has_boost_freq()
41 freq = pos->frequency; in cpufreq_frequency_table_cpuinfo()
43 if ((!cpufreq_boost_enabled() || !policy->boost_enabled) in cpufreq_frequency_table_cpuinfo()
44 && (pos->flags & CPUFREQ_BOOST_FREQ)) in cpufreq_frequency_table_cpuinfo()
47 pr_debug("table entry %u: %u kHz\n", (int)(pos - table), freq); in cpufreq_frequency_table_cpuinfo()
54 policy->min = policy->cpuinfo.min_freq = min_freq; in cpufreq_frequency_table_cpuinfo()
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| /kernel/linux/linux-6.6/Documentation/admin-guide/pm/ |
| D | intel-speed-select.rst | 1 .. SPDX-License-Identifier: GPL-2.0
14 - https://www.intel.com/content/www/us/en/architecture-and-technology/speed-select-technology-artic…
15 - https://builders.intel.com/docs/networkbuilders/intel-speed-select-technology-base-frequency-enha…
19 dynamically without pre-configuring via BIOS setup options. This dynamic
29 intel-speed-select configuration tool
32 Most Linux distribution packages may include the "intel-speed-select" tool. If not,
38 # cd tools/power/x86/intel-speed-select/
43 ------------
47 # intel-speed-select --help
49 The top-level help describes arguments and features. Notice that there is a
[all …]
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| /kernel/linux/linux-5.10/Documentation/cpu-freq/ |
| D | cpu-drivers.rst | 1 .. SPDX-License-Identifier: GPL-2.0
10 - Dominik Brodowski <linux@brodo.de>
11 - Rafael J. Wysocki <rafael.j.wysocki@intel.com>
12 - Viresh Kumar <viresh.kumar@linaro.org>
18 1.2 Per-CPU Initialization
24 2. Frequency Table Helpers
31 So, you just got a brand-new CPU / chipset with datasheets and want to
37 ------------------
46 .name - The name of this driver.
48 .init - A pointer to the per-policy initialization function.
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| /kernel/linux/linux-6.6/Documentation/cpu-freq/ |
| D | cpu-drivers.rst | 1 .. SPDX-License-Identifier: GPL-2.0
10 - Dominik Brodowski <linux@brodo.de>
11 - Rafael J. Wysocki <rafael.j.wysocki@intel.com>
12 - Viresh Kumar <viresh.kumar@linaro.org>
18 1.2 Per-CPU Initialization
24 2. Frequency Table Helpers
31 So, you just got a brand-new CPU / chipset with datasheets and want to
37 ------------------
46 .name - The name of this driver.
48 .init - A pointer to the per-policy initialization function.
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| /kernel/linux/linux-5.10/drivers/cpufreq/ |
| D | freq_table.c | 1 // SPDX-License-Identifier: GPL-2.0-only
5 * Copyright (C) 2002 - 2003 Dominik Brodowski
14 * FREQUENCY TABLE HELPERS *
19 struct cpufreq_frequency_table *pos, *table = policy->freq_table; in policy_has_boost_freq()
25 if (pos->flags & CPUFREQ_BOOST_FREQ) in policy_has_boost_freq()
41 freq = pos->frequency; in cpufreq_frequency_table_cpuinfo()
44 && (pos->flags & CPUFREQ_BOOST_FREQ)) in cpufreq_frequency_table_cpuinfo()
47 pr_debug("table entry %u: %u kHz\n", (int)(pos - table), freq); in cpufreq_frequency_table_cpuinfo()
54 policy->min = policy->cpuinfo.min_freq = min_freq; in cpufreq_frequency_table_cpuinfo()
55 policy->max = max_freq; in cpufreq_frequency_table_cpuinfo()
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| /kernel/linux/linux-6.6/include/linux/ |
| D | cpufreq.h | 1 /* SPDX-License-Identifier: GPL-2.0-only */
6 * (C) 2002 - 2003 Dominik Brodowski <linux@brodo.de>
28 * Frequency values here are CPU kHz
30 * Maximum transition latency is in nanoseconds - if it's unknown,
34 #define CPUFREQ_ETERNAL (-1)
51 /* in 10^(-9) s = nanoseconds */
69 unsigned int max; /* in kHz */ member
96 * - Any routine that wants to read from the policy structure will
98 * - Any routine that will write to the policy structure and/or may take away
106 * - fast_switch_possible should be set by the driver if it can
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| /kernel/linux/linux-5.10/Documentation/devicetree/bindings/iio/resolver/ |
| D | ad2s90.txt | 1 Analog Devices AD2S90 Resolver-to-Digital Converter
6 - compatible: should be "adi,ad2s90"
7 - reg: SPI chip select number for the device
8 - spi-max-frequency: set maximum clock frequency, must be 830000
9 - spi-cpol and spi-cpha:
11 spi-cpha, spi-cpol.
14 Documentation/devicetree/bindings/spi/spi-bus.txt
16 Note about max frequency:
17 Chip's max frequency, as specified in its datasheet, is 2Mhz. But a 600ns
21 2 * 600ns, so the max frequency should be 1 / (2 * 6e-7), which gives
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| /kernel/linux/linux-6.6/arch/arm/boot/dts/broadcom/ |
| D | bcm28155-ap.dts | 1 // SPDX-License-Identifier: GPL-2.0-only
4 /dts-v1/;
6 #include <dt-bindings/gpio/gpio.h>
12 compatible = "brcm,bcm28155-ap", "brcm,bcm11351";
21 clock-frequency = <400000>;
26 clock-frequency = <400000>;
31 clock-frequency = <400000>;
36 clock-frequency = <100000>;
49 non-removable;
50 max-frequency = <48000000>;
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| /kernel/linux/linux-6.6/arch/arm/boot/dts/qcom/ |
| D | qcom-msm8960-cdp.dts | 1 // SPDX-License-Identifier: GPL-2.0
2 #include <dt-bindings/input/input.h>
4 #include "qcom-msm8960.dtsi"
8 compatible = "qcom,msm8960-cdp", "qcom,msm8960";
15 stdout-path = "serial0:115200n8";
18 ext_l2: gpio-regulator {
19 compatible = "regulator-fixed";
20 regulator-name = "ext_l2";
22 startup-delay-us = <10000>;
23 enable-active-high;
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| D | qcom-msm8960-samsung-expressatt.dts | 1 // SPDX-License-Identifier: GPL-2.0
2 #include <dt-bindings/input/input.h>
4 #include "qcom-msm8960.dtsi"
5 #include <dt-bindings/reset/qcom,gcc-msm8960.h>
8 model = "Samsung Galaxy Express SGH-I437";
10 chassis-type = "handset";
19 stdout-path = "serial0:115200n8";
33 vmmc-supply = <&pm8921_l5>;
38 vmmc-supply = <&pm8921_l6>;
39 vqmmc-supply = <&pm8921_l7>;
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| D | qcom-apq8064-sony-xperia-lagan-yuga.dts | 1 // SPDX-License-Identifier: GPL-2.0
2 #include "qcom-apq8064-v2.0.dtsi"
3 #include <dt-bindings/gpio/gpio.h>
4 #include <dt-bindings/input/input.h>
5 #include <dt-bindings/mfd/qcom-rpm.h>
6 #include <dt-bindings/pinctrl/qcom,pmic-gpio.h>
10 compatible = "sony,xperia-yuga", "qcom,apq8064";
11 chassis-type = "handset";
18 stdout-path = "serial0:115200n8";
21 gpio-keys {
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| /kernel/linux/linux-5.10/arch/arm/boot/dts/ |
| D | qcom-msm8960-cdp.dts | 1 // SPDX-License-Identifier: GPL-2.0
2 #include <dt-bindings/input/input.h>
4 #include "qcom-msm8960.dtsi"
8 compatible = "qcom,msm8960-cdp", "qcom,msm8960";
15 stdout-path = "serial0:115200n8";
41 compatible = "qcom,rpm-pm8921-regulators";
42 vin_lvs1_3_6-supply = <&pm8921_s4>;
43 vin_lvs2-supply = <&pm8921_s4>;
44 vin_lvs4_5_7-supply = <&pm8921_s4>;
45 vdd_ncp-supply = <&pm8921_l6>;
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| D | bcm28155-ap.dts | 14 /dts-v1/;
16 #include <dt-bindings/gpio/gpio.h>
22 compatible = "brcm,bcm28155-ap", "brcm,bcm11351";
35 clock-frequency = <400000>;
40 clock-frequency = <400000>;
45 clock-frequency = <400000>;
50 clock-frequency = <100000>;
58 non-removable;
59 max-frequency = <48000000>;
60 vmmc-supply = <&camldo1_reg>;
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| 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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| /kernel/linux/linux-6.6/Documentation/admin-guide/media/ |
| D | si4713.rst | 1 .. SPDX-License-Identifier: GPL-2.0
14 ----------------------------
26 Users must comply with local regulations on radio frequency (RF) transmission.
29 -------------------------
34 The I2C device driver exports a v4l2-subdev interface to the kernel.
36 using the v4l2-subdev calls (g_ext_ctrls, s_ext_ctrls).
42 Applications can use v4l2 radio API to specify frequency of operation, mute state,
48 ----------------------
51 Here is an output from v4l2-ctl util:
53 .. code-block:: none
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| /kernel/linux/linux-5.10/Documentation/admin-guide/media/ |
| D | si4713.rst | 1 .. SPDX-License-Identifier: GPL-2.0
14 ----------------------------
26 Users must comply with local regulations on radio frequency (RF) transmission.
29 -------------------------
34 The I2C device driver exports a v4l2-subdev interface to the kernel.
36 using the v4l2-subdev calls (g_ext_ctrls, s_ext_ctrls).
42 Applications can use v4l2 radio API to specify frequency of operation, mute state,
48 ----------------------
51 Here is an output from v4l2-ctl util:
53 .. code-block:: none
[all …]
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| /kernel/linux/linux-6.6/arch/arm/boot/dts/samsung/ |
| 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>;
24 cpu-map {
58 compatible = "arm,cortex-a7";
61 clock-frequency = <1000000000>;
62 cci-control-port = <&cci_control0>;
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| 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>;
25 cpu-map {
59 compatible = "arm,cortex-a15";
62 clock-frequency = <1800000000>;
63 cci-control-port = <&cci_control1>;
[all …]
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| /kernel/linux/linux-5.10/include/linux/ |
| D | cpufreq.h | 1 /* SPDX-License-Identifier: GPL-2.0-only */
6 * (C) 2002 - 2003 Dominik Brodowski <linux@brodo.de>
24 * Frequency values here are CPU kHz
26 * Maximum transition latency is in nanoseconds - if it's unknown,
30 #define CPUFREQ_ETERNAL (-1)
47 /* in 10^(-9) s = nanoseconds */
65 unsigned int max; /* in kHz */ member
68 unsigned int restore_freq; /* = policy->cur before transition */
93 * - Any routine that wants to read from the policy structure will
95 * - Any routine that will write to the policy structure and/or may take away
[all …]
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| /kernel/linux/linux-5.10/arch/arm64/boot/dts/freescale/ |
| D | fsl-ls1028a-qds.dts | 1 // SPDX-License-Identifier: (GPL-2.0+ OR MIT)
11 /dts-v1/;
13 #include "fsl-ls1028a.dtsi"
17 compatible = "fsl,ls1028a-qds", "fsl,ls1028a";
29 stdout-path = "serial0:115200n8";
37 sys_mclk: clock-mclk {
38 compatible = "fixed-clock";
39 #clock-cells = <0>;
40 clock-frequency = <25000000>;
43 reg_1p8v: regulator-1p8v {
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| /kernel/linux/linux-5.10/Documentation/devicetree/bindings/spi/ |
| D | qcom,spi-qup.txt | 4 and an input FIFO) for serial peripheral interface (SPI) mini-core.
10 - compatible: Should contain:
11 "qcom,spi-qup-v1.1.1" for 8660, 8960 and 8064.
12 "qcom,spi-qup-v2.1.1" for 8974 and later
13 "qcom,spi-qup-v2.2.1" for 8974 v2 and later.
15 - reg: Should contain base register location and length
16 - interrupts: Interrupt number used by this controller
18 - clocks: Should contain the core clock and the AHB clock.
19 - clock-names: Should be "core" for the core clock and "iface" for the
22 - #address-cells: Number of cells required to define a chip select
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| /kernel/linux/linux-6.6/arch/riscv/boot/dts/sifive/ |
| D | hifive-unmatched-a00.dts | 1 // SPDX-License-Identifier: (GPL-2.0 OR MIT)
4 #include "fu740-c000.dtsi"
5 #include <dt-bindings/gpio/gpio.h>
6 #include <dt-bindings/interrupt-controller/irq.h>
7 #include <dt-bindings/leds/common.h>
8 #include <dt-bindings/pwm/pwm.h>
10 /* Clock frequency (in Hz) of the PCB crystal for rtcclk */
15 compatible = "sifive,hifive-unmatched-a00", "sifive,fu740-c000",
19 stdout-path = "serial0";
23 timebase-frequency = <RTCCLK_FREQ>;
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| /kernel/linux/linux-5.10/arch/riscv/boot/dts/sifive/ |
| D | hifive-unleashed-a00.dts | 1 // SPDX-License-Identifier: (GPL-2.0 OR MIT)
2 /* Copyright (c) 2018-2019 SiFive, Inc */
4 #include "fu540-c000.dtsi"
5 #include <dt-bindings/gpio/gpio.h>
6 #include <dt-bindings/leds/common.h>
7 #include <dt-bindings/pwm/pwm.h>
9 /* Clock frequency (in Hz) of the PCB crystal for rtcclk */
13 #address-cells = <2>;
14 #size-cells = <2>;
16 compatible = "sifive,hifive-unleashed-a00", "sifive,fu540-c000";
[all …]
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