| /kernel/linux/linux-5.10/Documentation/devicetree/bindings/i2c/ |
| D | i2c-ocores.txt | 1 Device tree configuration for i2c-ocores
4 - compatible : "opencores,i2c-ocores"
6 "sifive,fu540-c000-i2c", "sifive,i2c0"
8 FU540-C000 SoC. Please refer to sifive-blocks-ip-versioning.txt
10 - reg : bus address start and address range size of device
11 - clocks : handle to the controller clock; see the note below.
12 Mutually exclusive with opencores,ip-clock-frequency
13 - opencores,ip-clock-frequency: frequency of the controller clock in Hz;
15 - #address-cells : should be <1>
16 - #size-cells : should be <0>
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| D | i2c.txt | 7 Required properties (per bus)
8 -----------------------------
10 - #address-cells - should be <1>. Read more about addresses below.
11 - #size-cells - should be <0>.
12 - compatible - name of I2C bus controller
17 The cells properties above define that an address of children of an I2C bus
20 Optional properties (per bus)
21 -----------------------------
26 - clock-frequency
27 frequency of bus clock in Hz.
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| D | i2c-aspeed.txt | 4 - #address-cells : should be 1
5 - #size-cells : should be 0
6 - reg : address offset and range of bus
7 - compatible : should be "aspeed,ast2400-i2c-bus"
8 or "aspeed,ast2500-i2c-bus"
9 or "aspeed,ast2600-i2c-bus"
10 - clocks : root clock of bus, should reference the APB
12 - resets : phandle to reset controller with the reset number in
14 - interrupts : interrupt number
17 - bus-frequency : frequency of the bus clock in Hz defaults to 100 kHz when not
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| /kernel/linux/linux-5.10/drivers/devfreq/ |
| D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0-only
3 bool "Generic Dynamic Voltage and Frequency Scaling (DVFS) support"
10 operating frequency based on the device driver's policy.
20 clock frequency of the device, which is also attached
21 to a device by 1-to-1. The device registering devfreq takes the
22 responsibility to "interpret" the representative frequency and
38 Chooses frequency based on the recent load on the device. Works
40 Simple-Ondemand should be able to provide busy/total counter
47 Sets the frequency at the maximum available frequency.
48 This governor always returns UINT_MAX as frequency so that
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| /kernel/linux/linux-6.6/Documentation/devicetree/bindings/i2c/ |
| D | opencores,i2c-ocores.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/i2c/opencores,i2c-ocores.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Peter Korsgaard <peter@korsgaard.com>
11 - Andrew Lunn <andrew@lunn.ch>
14 - $ref: /schemas/i2c/i2c-controller.yaml#
19 - items:
20 - enum:
21 - sifive,fu740-c000-i2c # Opencore based IP block FU740-C000 SoC
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| D | i2c.txt | 7 Required properties (per bus)
8 -----------------------------
10 - #address-cells - should be <1>. Read more about addresses below.
11 - #size-cells - should be <0>.
12 - compatible - name of I2C bus controller
17 The cells properties above define that an address of children of an I2C bus
20 Optional properties (per bus)
21 -----------------------------
26 - clock-frequency
27 frequency of bus clock in Hz.
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| /kernel/linux/linux-6.6/drivers/devfreq/ |
| D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0-only
3 bool "Generic Dynamic Voltage and Frequency Scaling (DVFS) support"
9 operating frequency based on the device driver's policy.
19 clock frequency of the device, which is also attached
20 to a device by 1-to-1. The device registering devfreq takes the
21 responsibility to "interpret" the representative frequency and
37 Chooses frequency based on the recent load on the device. Works
39 Simple-Ondemand should be able to provide busy/total counter
46 Sets the frequency at the maximum available frequency.
47 This governor always returns UINT_MAX as frequency so that
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| /kernel/linux/linux-6.6/arch/arm64/boot/dts/mediatek/ |
| D | mt8186-evb.dts | 1 // SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
5 /dts-v1/;
10 chassis-type = "embedded";
11 compatible = "mediatek,mt8186-evb", "mediatek,mt8186";
18 stdout-path = "serial0:921600n8";
30 clock-frequency = <400000>;
31 pinctrl-names = "default";
32 pinctrl-0 = <&i2c0_pins>;
38 clock-frequency = <400000>;
39 i2c-scl-internal-delay-ns = <8000>;
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| /kernel/linux/linux-5.10/arch/arm/boot/dts/ |
| D | picoxcell-pc3x3.dtsi | 1 // SPDX-License-Identifier: GPL-2.0-only
8 #address-cells = <1>;
9 #size-cells = <1>;
12 #address-cells = <0>;
13 #size-cells = <0>;
16 compatible = "arm,arm1176jz-s";
18 cpu-clock = <&arm_clk>, "cpu";
19 d-cache-line-size = <32>;
20 d-cache-size = <32768>;
21 i-cache-line-size = <32>;
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| D | aspeed-g6.dtsi | 1 // SPDX-License-Identifier: GPL-2.0-or-later
4 #include <dt-bindings/interrupt-controller/arm-gic.h>
5 #include <dt-bindings/interrupt-controller/aspeed-scu-ic.h>
6 #include <dt-bindings/clock/ast2600-clock.h>
11 #address-cells = <1>;
12 #size-cells = <1>;
13 interrupt-parent = <&gic>;
43 #address-cells = <1>;
44 #size-cells = <0>;
45 enable-method = "aspeed,ast2600-smp";
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| /kernel/linux/linux-6.6/Documentation/ABI/testing/ |
| D | sysfs-bus-iio-impedance-analyzer-ad5933 | 1 What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_frequency_start
4 Contact: linux-iio@vger.kernel.org
6 Frequency sweep start frequency in Hz.
8 What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_frequency_increment
11 Contact: linux-iio@vger.kernel.org
13 Frequency increment in Hz (step size) between consecutive
14 frequency points along the sweep.
16 What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_frequency_points
19 Contact: linux-iio@vger.kernel.org
21 Number of frequency points (steps) in the frequency sweep.
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| D | sysfs-platform-dptf | 1 What: /sys/bus/platform/devices/INT3407:00/dptf_power/charger_type
4 Contact: linux-acpi@vger.kernel.org
6 (RO) The charger type - Traditional, Hybrid or NVDC.
8 What: /sys/bus/platform/devices/INT3407:00/dptf_power/adapter_rating_mw
11 Contact: linux-acpi@vger.kernel.org
16 What: /sys/bus/platform/devices/INT3407:00/dptf_power/max_platform_power_mw
19 Contact: linux-acpi@vger.kernel.org
24 What: /sys/bus/platform/devices/INT3407:00/dptf_power/platform_power_source
27 Contact: linux-acpi@vger.kernel.org
33 - 0x00 = DC
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| /kernel/linux/linux-5.10/Documentation/ABI/testing/ |
| D | sysfs-bus-iio-impedance-analyzer-ad5933 | 1 What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_frequency_start
4 Contact: linux-iio@vger.kernel.org
6 Frequency sweep start frequency in Hz.
8 What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_frequency_increment
11 Contact: linux-iio@vger.kernel.org
13 Frequency increment in Hz (step size) between consecutive
14 frequency points along the sweep.
16 What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_frequency_points
19 Contact: linux-iio@vger.kernel.org
21 Number of frequency points (steps) in the frequency sweep.
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| D | sysfs-bus-iio-frequency-adf4371 | 1 What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_frequency
3 Contact: linux-iio@vger.kernel.org
5 Stores the PLL frequency in Hz for channel Y.
6 Reading returns the actual frequency in Hz.
8 frequency ranging from 4000000000 Hz 8000000000 Hz.
14 This channel duplicates the channel 0 frequency
16 A frequency doubler generates frequencies from
19 A frequency quadrupler generates frequencies from
22 Note: writes to one of the channels will affect the frequency of
24 fundamental output frequency.
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| /kernel/linux/linux-5.10/drivers/staging/iio/Documentation/ |
| D | sysfs-bus-iio-dds | 2 What: /sys/bus/iio/devices/.../out_altvoltageX_frequencyY
4 Contact: linux-iio@vger.kernel.org
6 Stores frequency into tuning word Y.
8 which allows for pin controlled FSK Frequency Shift Keying
13 What: /sys/bus/iio/devices/.../out_altvoltageX_frequencyY_scale
15 Contact: linux-iio@vger.kernel.org
18 obtain the desired value in Hz. If shared across all frequency
22 What: /sys/bus/iio/devices/.../out_altvoltageX_frequencysymbol
24 Contact: linux-iio@vger.kernel.org
26 Specifies the active output frequency tuning word. The value
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| /kernel/linux/linux-6.6/drivers/staging/iio/Documentation/ |
| D | sysfs-bus-iio-dds | 2 What: /sys/bus/iio/devices/.../out_altvoltageX_frequencyY
4 Contact: linux-iio@vger.kernel.org
6 Stores frequency into tuning word Y.
8 which allows for pin controlled FSK Frequency Shift Keying
13 What: /sys/bus/iio/devices/.../out_altvoltageX_frequencyY_scale
15 Contact: linux-iio@vger.kernel.org
18 obtain the desired value in Hz. If shared across all frequency
22 What: /sys/bus/iio/devices/.../out_altvoltageX_frequencysymbol
24 Contact: linux-iio@vger.kernel.org
26 Specifies the active output frequency tuning word. The value
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| /kernel/linux/linux-6.6/arch/arm/boot/dts/aspeed/ |
| D | aspeed-bmc-facebook-yosemite4.dts | 1 // SPDX-License-Identifier: GPL-2.0-or-later
4 /dts-v1/;
5 #include "aspeed-g6.dtsi"
6 #include <dt-bindings/gpio/aspeed-gpio.h>
7 #include <dt-bindings/leds/leds-pca955x.h>
8 #include <dt-bindings/i2c/i2c.h>
12 compatible = "facebook,yosemite4-bmc", "aspeed,ast2600";
23 stdout-path = "serial4:57600n8";
31 iio-hwmon {
32 compatible = "iio-hwmon";
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| D | aspeed-g6.dtsi | 1 // SPDX-License-Identifier: GPL-2.0-or-later
4 #include <dt-bindings/interrupt-controller/arm-gic.h>
5 #include <dt-bindings/interrupt-controller/aspeed-scu-ic.h>
6 #include <dt-bindings/clock/ast2600-clock.h>
11 #address-cells = <1>;
12 #size-cells = <1>;
13 interrupt-parent = <&gic>;
47 #address-cells = <1>;
48 #size-cells = <0>;
49 enable-method = "aspeed,ast2600-smp";
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| D | aspeed-g4.dtsi | 1 // SPDX-License-Identifier: GPL-2.0+
2 #include <dt-bindings/clock/aspeed-clock.h>
7 #address-cells = <1>;
8 #size-cells = <1>;
9 interrupt-parent = <&vic>;
35 #address-cells = <1>;
36 #size-cells = <0>;
39 compatible = "arm,arm926ej-s";
51 compatible = "simple-bus";
52 #address-cells = <1>;
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| D | aspeed-g5.dtsi | 1 // SPDX-License-Identifier: GPL-2.0+
2 #include <dt-bindings/clock/aspeed-clock.h>
3 #include <dt-bindings/interrupt-controller/aspeed-scu-ic.h>
8 #address-cells = <1>;
9 #size-cells = <1>;
10 interrupt-parent = <&vic>;
36 #address-cells = <1>;
37 #size-cells = <0>;
40 compatible = "arm,arm1176jzf-s";
52 compatible = "simple-bus";
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| /kernel/linux/linux-6.6/arch/powerpc/sysdev/ |
| D | mpc5xxx_clocks.c | 1 // SPDX-License-Identifier: GPL-2.0
10 * mpc5xxx_fwnode_get_bus_frequency - Find the bus frequency for a firmware node
13 * Returns bus frequency (IPS on MPC512x, IPB on MPC52xx),
14 * or 0 if the bus frequency cannot be found.
22 ret = fwnode_property_read_u32(fwnode, "bus-frequency", &bus_freq); in mpc5xxx_fwnode_get_bus_frequency()
27 ret = fwnode_property_read_u32(parent, "bus-frequency", &bus_freq); in mpc5xxx_fwnode_get_bus_frequency()
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| /kernel/linux/linux-6.6/drivers/net/ethernet/xilinx/ |
| D | xilinx_axienet_mdio.c | 1 // SPDX-License-Identifier: GPL-2.0
3 * MDIO bus driver for the Xilinx Axi Ethernet device
6 * Copyright (c) 2010 - 2011 Michal Simek <monstr@monstr.eu>
7 * Copyright (c) 2010 - 2011 PetaLogix
9 * Copyright (c) 2010 - 2012 Xilinx, Inc. All rights reserved.
37 ((u32)lp->mii_clk_div | XAE_MDIO_MC_MDIOEN_MASK)); in axienet_mdio_mdc_enable()
51 * axienet_mdio_read - MDIO interface read function
52 * @bus: Pointer to mii bus structure
56 * Return: The register contents on success, -ETIMEDOUT on a timeout
62 static int axienet_mdio_read(struct mii_bus *bus, int phy_id, int reg) in axienet_mdio_read() argument
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| /kernel/linux/linux-6.6/Documentation/devicetree/bindings/memory-controllers/ |
| D | rockchip,rk3399-dmc.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/memory-controllers/rockchip,rk3399-dmc.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Brian Norris <briannorris@chromium.org>
15 - rockchip,rk3399-dmc
17 devfreq-events:
21 Documentation/devicetree/bindings/devfreq/event/rockchip-dfi.txt.
26 clock-names:
28 - const: dmc_clk
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| /kernel/linux/linux-5.10/Documentation/devicetree/bindings/devfreq/ |
| D | exynos-bus.txt | 1 * Generic Exynos Bus frequency device
4 and sub-blocks in SoC. Most Exynos SoCs share the common architecture
5 for buses. Generally, each bus of Exynos SoC includes a source clock
6 and a power line, which are able to change the clock frequency
7 of the bus in runtime. To monitor the usage of each bus in runtime,
9 is able to measure the current load of sub-blocks.
11 The Exynos SoC includes the various sub-blocks which have the each AXI bus.
12 The each AXI bus has the owned source clock but, has not the only owned
13 power line. The power line might be shared among one more sub-blocks.
14 So, we can divide into two type of device as the role of each sub-block.
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| /kernel/linux/linux-5.10/arch/powerpc/sysdev/ |
| D | mpc5xxx_clocks.c | 1 // SPDX-License-Identifier: GPL-2.0
3 * mpc5xxx_get_bus_frequency - Find the bus frequency for a device
6 * Returns bus frequency (IPS on MPC512x, IPB on MPC52xx),
7 * or 0 if the bus frequency cannot be found.
21 p_bus_freq = of_get_property(node, "bus-frequency", NULL); in mpc5xxx_get_bus_frequency()
|