| /Linux-v5.10/Documentation/devicetree/bindings/bus/ |
| D | simple-pm-bus.yaml | 1 # SPDX-License-Identifier: GPL-2.0
3 ---
4 $id: http://devicetree.org/schemas/bus/simple-pm-bus.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Simple Power-Managed Bus
10 - Geert Uytterhoeven <geert+renesas@glider.be>
13 A Simple Power-Managed Bus is a transparent bus that doesn't need a real
16 However, its bus controller is part of a PM domain, or under the control
17 of a functional clock. Hence, the bus controller's PM domain and/or
18 clock must be enabled for child devices connected to the bus (either
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| D | renesas,bsc.yaml | 2 ---
3 $id: http://devicetree.org/schemas/bus/renesas,bsc.yaml#
4 $schema: http://devicetree.org/meta-schemas/core.yaml#
6 title: Renesas Bus State Controller (BSC)
9 - Geert Uytterhoeven <geert+renesas@glider.be>
12 The Renesas Bus State Controller (BSC, sometimes called "LBSC within Bus
13 Bridge", or "External Bus Interface") can be found in several Renesas ARM
14 SoCs. It provides an external bus for connecting multiple external
18 While the BSC is a fairly simple memory-mapped bus, it may be part of a
19 PM domain, and may have a gateable functional clock. Before a device
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| /Linux-v5.10/drivers/bus/ |
| D | simple-pm-bus.c | 2 * Simple Power-Managed Bus Driver
4 * Copyright (C) 2014-2015 Glider bvba
19 struct device_node *np = pdev->dev.of_node; in simple_pm_bus_probe()
21 dev_dbg(&pdev->dev, "%s\n", __func__); in simple_pm_bus_probe()
23 pm_runtime_enable(&pdev->dev); in simple_pm_bus_probe()
26 of_platform_populate(np, NULL, NULL, &pdev->dev); in simple_pm_bus_probe()
33 dev_dbg(&pdev->dev, "%s\n", __func__); in simple_pm_bus_remove()
35 pm_runtime_disable(&pdev->dev); in simple_pm_bus_remove()
40 { .compatible = "simple-pm-bus", },
49 .name = "simple-pm-bus",
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| D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0
3 # Bus Devices
6 menu "Bus devices"
24 bool "ARM Integrator Logic Module bus"
29 Say y here to enable support for the ARM Logic Module bus
33 bool "Broadcom STB GISB bus arbiter"
37 Driver for the Broadcom Set Top Box System-on-a-chip internal bus
39 and internal bus master decoding.
42 bool "Baikal-T1 APB-bus driver"
46 Baikal-T1 AXI-APB bridge is used to access the SoC subsystem CSRs.
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| D | Makefile | 1 # SPDX-License-Identifier: GPL-2.0
3 # Makefile for the bus drivers.
6 # Interconnect bus drivers for ARM platforms
7 obj-$(CONFIG_ARM_CCI) += arm-cci.o
8 obj-$(CONFIG_ARM_INTEGRATOR_LM) += arm-integrator-lm.o
9 obj-$(CONFIG_HISILICON_LPC) += hisi_lpc.o
10 obj-$(CONFIG_BRCMSTB_GISB_ARB) += brcmstb_gisb.o
11 obj-$(CONFIG_MOXTET) += moxtet.o
13 # DPAA2 fsl-mc bus
14 obj-$(CONFIG_FSL_MC_BUS) += fsl-mc/
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| /Linux-v5.10/Documentation/devicetree/bindings/remoteproc/ |
| D | wkup_m3_rproc.txt | 4 The TI AM33xx and AM43xx family of devices use a small Cortex M3 co-processor
13 within the SoC. It is added as a child node of the parent interconnect bus
17 --------------------
18 - compatible: Should be one of,
19 "ti,am3352-wkup-m3" for AM33xx SoCs
20 "ti,am4372-wkup-m3" for AM43xx SoCs
21 - reg: Should contain the address ranges for the two internal
24 translating these into bus addresses.
25 - reg-names: Contains the corresponding names for the two memory
27 - ti,hwmods: Name of the hwmod associated with the wkupm3 device.
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| D | ti,k3-r5f-rproc.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only or BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/remoteproc/ti,k3-r5f-rproc.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Suman Anna <s-anna@ti.com>
13 The TI K3 family of SoCs usually have one or more dual-core Arm Cortex R5F
20 Each Dual-Core R5F sub-system is represented as a single DTS node
33 - ti,am654-r5fss
34 - ti,j721e-r5fss
36 power-domains:
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| /Linux-v5.10/Documentation/devicetree/bindings/soc/dove/ |
| D | pmu.txt | 4 - compatible: value should be "marvell,dove-pmu".
5 May also include "simple-bus" if there are child devices, in which
7 - reg: two base addresses and sizes of the PM controller and PMU.
8 - interrupts: single interrupt number for the PMU interrupt
9 - interrupt-controller: must be specified as the PMU itself is an
11 - #interrupt-cells: must be 1.
12 - #reset-cells: must be 1.
13 - domains: sub-node containing domain descriptions
16 - ranges: defines the address mapping for child devices, as per the
18 "simple-bus".
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| /Linux-v5.10/Documentation/devicetree/bindings/soc/ti/ |
| D | wkup_m3_ipc.txt | 4 The TI AM33xx and AM43xx family of devices use a small Cortex M3 co-processor
7 C-states for CPU Idle. Once the wkup_m3_ipc driver uses the wkup_m3_rproc driver
10 API to allow the SoC PM code to execute specific PM tasks.
18 --------------------
19 - compatible: Should be,
20 "ti,am3352-wkup-m3-ipc" for AM33xx SoCs
21 "ti,am4372-wkup-m3-ipc" for AM43xx SoCs
22 - reg: Contains the IPC register address space to communicate
24 - interrupts: Contains the interrupt information for the wkup_m3
26 - ti,rproc: phandle to the wkup_m3 rproc node so the IPC driver
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| /Linux-v5.10/arch/arm64/boot/dts/allwinner/ |
| D | sun50i-h6-beelink-gs1.dts | 1 // SPDX-License-Identifier: (GPL-2.0+ OR MIT)
4 /dts-v1/;
6 #include "sun50i-h6.dtsi"
7 #include "sun50i-h6-cpu-opp.dtsi"
9 #include <dt-bindings/gpio/gpio.h>
13 compatible = "azw,beelink-gs1", "allwinner,sun50i-h6";
21 stdout-path = "serial0:115200n8";
25 compatible = "hdmi-connector";
27 ddc-en-gpios = <&pio 7 2 GPIO_ACTIVE_HIGH>; /* PH2 */
31 remote-endpoint = <&hdmi_out_con>;
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| /Linux-v5.10/Documentation/driver-api/pm/ |
| D | devices.rst | 1 .. SPDX-License-Identifier: GPL-2.0
10 :Copyright: |copy| 2010-2011 Rafael J. Wysocki <rjw@sisk.pl>, Novell Inc.
18 management (PM) code is also driver-specific. Most drivers will do very
22 This writeup gives an overview of how drivers interact with system-wide
25 background for the domain-specific work you'd do with any specific driver.
31 Drivers will use one or both of these models to put devices into low-power
36 Drivers can enter low-power states as part of entering system-wide
37 low-power states like "suspend" (also known as "suspend-to-RAM"), or
39 "suspend-to-disk").
41 This is something that device, bus, and class drivers collaborate on
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| /Linux-v5.10/arch/arm/mach-ux500/ |
| D | cpu-db8500.c | 1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright (C) 2008-2009 ST-Ericsson SA
10 #include <linux/amba/bus.h>
14 #include <linux/irqchip/arm-gic.h>
15 #include <linux/mfd/dbx500-prcmu.h>
16 #include <linux/platform_data/arm-ux500-pm.h>
25 #include <asm/hardware/cache-l2x0.h>
29 #include "db8500-regs.h"
38 np = of_find_compatible_node(NULL, NULL, "arm,pl310-cache"); in ux500_l2x0_unlock()
42 return -ENODEV; in ux500_l2x0_unlock()
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| /Linux-v5.10/drivers/usb/serial/ |
| D | bus.c | 1 // SPDX-License-Identifier: GPL-2.0
3 * USB Serial Converter Bus specific functions
5 * Copyright (C) 2002 Greg Kroah-Hartman (greg@kroah.com)
24 * a simple check here. in usb_serial_device_match()
32 if (driver == port->serial->type) in usb_serial_device_match()
48 return -ENODEV; in usb_serial_device_probe()
51 retval = usb_autopm_get_interface(port->serial->interface); in usb_serial_device_probe()
55 driver = port->serial->type; in usb_serial_device_probe()
56 if (driver->port_probe) { in usb_serial_device_probe()
57 retval = driver->port_probe(port); in usb_serial_device_probe()
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| /Linux-v5.10/drivers/devfreq/ |
| D | exynos-bus.c | 1 // SPDX-License-Identifier: GPL-2.0-only
3 * Generic Exynos Bus frequency driver with DEVFREQ Framework
8 * This driver support Exynos Bus frequency feature by using
14 #include <linux/devfreq-event.h>
41 * Control the devfreq-event device to get the current state of bus
44 static int exynos_bus_##ops(struct exynos_bus *bus) \
48 for (i = 0; i < bus->edev_count; i++) { \
49 if (!bus->edev[i]) \
51 ret = devfreq_event_##ops(bus->edev[i]); \
62 static int exynos_bus_get_event(struct exynos_bus *bus, in exynos_bus_get_event() argument
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| /Linux-v5.10/drivers/base/power/ |
| D | domain.c | 1 // SPDX-License-Identifier: GPL-2.0
3 * drivers/base/power/domain.c - Common code related to device power domains.
7 #define pr_fmt(fmt) "PM: " fmt
34 __routine = genpd->dev_ops.callback; \
53 mutex_lock(&genpd->mlock); in genpd_lock_mtx()
59 mutex_lock_nested(&genpd->mlock, depth); in genpd_lock_nested_mtx()
64 return mutex_lock_interruptible(&genpd->mlock); in genpd_lock_interruptible_mtx()
69 return mutex_unlock(&genpd->mlock); in genpd_unlock_mtx()
80 __acquires(&genpd->slock) in genpd_lock_spin()
84 spin_lock_irqsave(&genpd->slock, flags); in genpd_lock_spin()
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| /Linux-v5.10/arch/arm64/boot/dts/marvell/ |
| D | armada-37xx.dtsi | 1 // SPDX-License-Identifier: (GPL-2.0+ OR MIT)
7 * Gregory CLEMENT <gregory.clement@free-electrons.com>
11 #include <dt-bindings/interrupt-controller/arm-gic.h>
16 interrupt-parent = <&gic>;
17 #address-cells = <2>;
18 #size-cells = <2>;
25 reserved-memory {
26 #address-cells = <2>;
27 #size-cells = <2>;
34 psci-area@4000000 {
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| /Linux-v5.10/include/linux/device/ |
| D | class.h | 1 // SPDX-License-Identifier: GPL-2.0
3 * The class-specific portions of the driver model
5 * Copyright (c) 2001-2003 Patrick Mochel <mochel@osdl.org>
6 * Copyright (c) 2004-2009 Greg Kroah-Hartman <gregkh@suse.de>
7 * Copyright (c) 2008-2009 Novell Inc.
8 * Copyright (c) 2012-2019 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 * Copyright (c) 2012-2019 Linux Foundation
11 * See Documentation/driver-api/driver-model/ for more information.
19 #include <linux/pm.h>
20 #include <linux/device/bus.h>
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| /Linux-v5.10/arch/arm/boot/dts/ |
| D | bcm2711.dtsi | 1 // SPDX-License-Identifier: GPL-2.0
4 #include <dt-bindings/interrupt-controller/arm-gic.h>
5 #include <dt-bindings/soc/bcm2835-pm.h>
10 #address-cells = <2>;
11 #size-cells = <1>;
13 interrupt-parent = <&gicv2>;
16 compatible = "brcm,bcm2711-vc5";
20 clk_27MHz: clk-27M {
21 #clock-cells = <0>;
22 compatible = "fixed-clock";
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| D | sun9i-a80-cubieboard4.dts | 5 * Chen-Yu Tsai <wens@csie.org>
7 * This file is dual-licensed: you can use it either under the terms
46 /dts-v1/;
47 #include "sun9i-a80.dtsi"
49 #include <dt-bindings/gpio/gpio.h>
53 compatible = "cubietech,a80-cubieboard4", "allwinner,sun9i-a80";
60 stdout-path = "serial0:115200n8";
64 compatible = "gpio-leds";
77 vga-connector {
78 compatible = "vga-connector";
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| D | sun6i-a31s-sinovoip-bpi-m2.dts | 4 * This file is dual-licensed: you can use it either under the terms
43 /dts-v1/;
44 #include "sun6i-a31s.dtsi"
45 #include <dt-bindings/gpio/gpio.h>
48 model = "Sinovoip BPI-M2";
49 compatible = "sinovoip,bpi-m2", "allwinner,sun6i-a31s";
56 stdout-path = "serial0:115200n8";
60 compatible = "gpio-leds";
63 label = "bpi-m2:blue:usr";
68 label = "bpi-m2:green:usr";
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| D | am33xx.dtsi | 4 * Copyright (C) 2012 Texas Instruments Incorporated - https://www.ti.com/
11 #include <dt-bindings/bus/ti-sysc.h>
12 #include <dt-bindings/gpio/gpio.h>
13 #include <dt-bindings/pinctrl/am33xx.h>
14 #include <dt-bindings/clock/am3.h>
18 interrupt-parent = <&intc>;
19 #address-cells = <1>;
20 #size-cells = <1>;
33 d-can0 = &dcan0;
34 d-can1 = &dcan1;
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| /Linux-v5.10/include/linux/ |
| D | device.h | 1 // SPDX-License-Identifier: GPL-2.0
3 * device.h - generic, centralized driver model
5 * Copyright (c) 2001-2003 Patrick Mochel <mochel@osdl.org>
6 * Copyright (c) 2004-2009 Greg Kroah-Hartman <gregkh@suse.de>
7 * Copyright (c) 2008-2009 Novell Inc.
9 * See Documentation/driver-api/driver-model/ for more information.
25 #include <linux/pm.h>
30 #include <linux/device/bus.h>
50 * struct subsys_interface - interfaces to device functions
57 * Simple interfaces attached to a subsystem. Multiple interfaces can
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| /Linux-v5.10/arch/arm64/boot/dts/ti/ |
| D | k3-j7200-mcu-wakeup.dtsi | 1 // SPDX-License-Identifier: GPL-2.0
5 * Copyright (C) 2020 Texas Instruments Incorporated - https://www.ti.com/
10 compatible = "ti,k2g-sci";
11 ti,host-id = <12>;
13 mbox-names = "rx", "tx";
18 reg-names = "debug_messages";
21 k3_pds: power-controller {
22 compatible = "ti,sci-pm-domain";
23 #power-domain-cells = <2>;
27 compatible = "ti,k2g-sci-clk";
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| /Linux-v5.10/arch/arm64/boot/dts/renesas/ |
| D | beacon-renesom-som.dtsi | 1 // SPDX-License-Identifier: GPL-2.0
6 #include <dt-bindings/gpio/gpio.h>
21 compatible = "fixed-clock";
22 #clock-cells = <0>;
23 clock-frequency = <32768>;
24 clock-output-names = "osc_32k";
28 compatible = "regulator-fixed";
29 regulator-name = "fixed-1.8V";
30 regulator-min-microvolt = <1800000>;
31 regulator-max-microvolt = <1800000>;
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| /Linux-v5.10/Documentation/spi/ |
| D | spi-summary.rst | 5 02-Feb-2012
8 ------------
11 It's a simple "de facto" standard, not complicated enough to acquire a
17 clocking modes through which data is exchanged; mode-0 and mode-3 are most
32 - SPI may be used for request/response style device protocols, as with
35 - It may also be used to stream data in either direction (half duplex),
38 - Some devices may use eight bit words. Others may use different word
39 lengths, such as streams of 12-bit or 20-bit digital samples.
41 - Words are usually sent with their most significant bit (MSB) first,
44 - Sometimes SPI is used to daisy-chain devices, like shift registers.
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