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/linux/Documentation/devicetree/bindings/bus/
H A Dsimple-pm-bus.yaml1 # 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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H A Drenesas,bsc.yaml2 ---
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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H A Dfsl,imx8qxp-pixel-link-msi-bus.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/bus/fsl,imx8qxp-pixel-link-msi-bus.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Freescale i.MX8qxp Pixel Link Medium Speed Interconnect (MSI) Bus
10 - Liu Ying <victor.liu@nxp.com>
13 i.MX8qxp pixel link MSI bus is used to control settings of PHYs, I/Os
14 sitting together with the PHYs. It is not the same as the MSI bus coming
18 i.MX8qxp pixel link MSI bus is a simple memory-mapped bus. Two input clocks,
20 connected to the bus can be accessed. Also, the bus is part of a power
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/linux/Documentation/devicetree/bindings/remoteproc/
H A Dwkup_m3_rproc.txt4 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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H A Dti,k3-r5f-rproc.yaml1 # 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 AM64x SoCs do not support LockStep mode, but rather a new non-safety mode
21 called "Single-CPU" mode, where only Core0 is used, but with ability to use
27 Each Dual-Core R5F sub-system is represented as a single DTS node
40 - ti,am62-r5fss
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/linux/Documentation/devicetree/bindings/soc/dove/
H A Dpmu.txt4 - 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/arch/riscv/boot/dts/canaan/
H A Dk210.dtsi1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (C) 2019-20 Sean Anderson <seanga2@gmail.com>
6 #include <dt-bindings/clock/k210-clk.h>
7 #include <dt-bindings/pinctrl/k210-fpioa.h>
8 #include <dt-bindings/reset/k210-rst.h>
12 * Although the K210 is a 64-bit CPU, the address bus is only 32-bits
15 #address-cells = <1>;
16 #size-cells = <1>;
17 compatible = "canaan,kendryte-k210";
21 * Since this is a non-ratified draft specification, the kernel does not
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/linux/arch/arm/boot/dts/ti/omap/
H A Dam33xx-l4.dtsi2 compatible = "ti,am33xx-l4-wkup", "simple-pm-bus";
3 power-domains = <&prm_wkup>;
5 clock-names = "fck";
10 reg-names = "ap", "la", "ia0", "ia1";
11 #address-cells = <1>;
12 #size-cells = <1>;
18 compatible = "simple-pm-bus";
19 #address-cells = <1>;
20 #size-cells = <1>;
28 compatible = "simple-pm-bus";
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H A Domap5-l4.dtsi2 compatible = "ti,omap5-l4-cfg", "simple-pm-bus";
3 power-domains = <&prm_core>;
5 clock-names = "fck";
9 reg-names = "ap", "la", "ia0";
10 #address-cells = <1>;
11 #size-cells = <1>;
21 compatible = "simple-pm-bus";
22 #address-cells = <1>;
23 #size-cells = <1>;
55 target-module@2000 { /* 0x4a002000, ap 3 44.0 */
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H A Domap4-l4.dtsi1 // SPDX-License-Identifier: GPL-2.0
3 compatible = "ti,omap4-l4-cfg", "simple-pm-bus";
4 power-domains = <&prm_core>;
6 clock-names = "fck";
10 reg-names = "ap", "la", "ia0";
11 #address-cells = <1>;
12 #size-cells = <1>;
22 compatible = "simple-pm-bus";
23 #address-cells = <1>;
24 #size-cells = <1>;
[all …]
H A Dam437x-l4.dtsi2 compatible = "ti,am4-l4-wkup", "simple-pm-bus";
3 power-domains = <&prm_wkup>;
5 clock-names = "fck";
10 reg-names = "ap", "la", "ia0", "ia1";
11 #address-cells = <1>;
12 #size-cells = <1>;
18 compatible = "simple-pm-bus";
19 #address-cells = <1>;
20 #size-cells = <1>;
28 compatible = "simple-pm-bus";
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H A Dam33xx.dtsi1 // SPDX-License-Identifier: GPL-2.0-only
5 * Copyright (C) 2012 Texas Instruments Incorporated - https://www.ti.com/
8 #include <dt-bindings/bus/ti-sysc.h>
9 #include <dt-bindings/gpio/gpio.h>
10 #include <dt-bindings/pinctrl/am33xx.h>
11 #include <dt-bindings/clock/am3.h>
15 interrupt-parent = <&intc>;
16 #address-cells = <1>;
17 #size-cells = <1>;
30 d-can0 = &dcan0;
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H A Domap5.dtsi1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright (C) 2012 Texas Instruments Incorporated - https://www.ti.com/
8 #include <dt-bindings/bus/ti-sysc.h>
9 #include <dt-bindings/gpio/gpio.h>
10 #include <dt-bindings/interrupt-controller/arm-gic.h>
11 #include <dt-bindings/pinctrl/omap.h>
12 #include <dt-bindings/clock/omap5.h>
15 #address-cells = <2>;
16 #size-cells = <2>;
19 interrupt-parent = <&wakeupgen>;
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H A Domap4.dtsi1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright (C) 2011 Texas Instruments Incorporated - https://www.ti.com/
6 #include <dt-bindings/bus/ti-sysc.h>
7 #include <dt-bindings/clock/omap4.h>
8 #include <dt-bindings/gpio/gpio.h>
9 #include <dt-bindings/interrupt-controller/arm-gic.h>
10 #include <dt-bindings/pinctrl/omap.h>
11 #include <dt-bindings/clock/omap4.h>
15 interrupt-parent = <&wakeupgen>;
16 #address-cells = <1>;
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/linux/drivers/bus/
H A DMakefile1 # 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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H A DKconfig1 # 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 tristate "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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/linux/drivers/platform/chrome/
H A DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
26 If you have an ACPI-compatible Chromebook, say Y or M here.
47 The range of memory used is 0xf00000-0x1000000, traditionally
73 devices that have multiple drop-in options for one component.
82 You also need to enable the driver for the bus you are using. The
83 protocol for talking to the EC is defined by the bus driver.
94 EC through an I2C bus. This uses a simple byte-level protocol with
103 through rpmsg. This uses a simple byte-level protocol with a
104 checksum. Also since there's no addition EC-to-host interrupt, this
117 ISH Transport protocol (ISH-TP). This uses a simple byte-level
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/linux/arch/arm/boot/dts/socionext/
H A Duniphier-pro4.dtsi1 // SPDX-License-Identifier: GPL-2.0+ OR MIT
5 // Copyright (C) 2015-2016 Socionext Inc.
8 #include <dt-bindings/gpio/uniphier-gpio.h>
9 #include <dt-bindings/interrupt-controller/arm-gic.h>
12 compatible = "socionext,uniphier-pro4";
13 #address-cells = <1>;
14 #size-cells = <1>;
17 #address-cells = <1>;
18 #size-cells = <0>;
22 compatible = "arm,cortex-a9";
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/linux/arch/arm64/boot/dts/ti/
H A Dk3-am65-wakeup.dtsi1 // SPDX-License-Identifier: GPL-2.0-only OR MIT
5 * Copyright (C) 2016-2024 Texas Instruments Incorporated - https://www.ti.com/
9 dmsc: system-controller@44083000 {
10 compatible = "ti,am654-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>;
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/linux/Documentation/input/
H A Dinput-programming.rst8 Here comes a very simple example of an input device driver. The device has
34 return -EBUSY;
40 error = -ENOMEM;
44 button_dev->evbit[0] = BIT_MASK(EV_KEY);
45 button_dev->keybit[BIT_WORD(BTN_0)] = BIT_MASK(BTN_0);
83 parts of the input systems what it is - what events can be generated or
88 set_bit(EV_KEY, button_dev->evbit);
89 set_bit(BTN_0, button_dev->keybit);
126 dev->open() and dev->close()
140 return -EBUSY;
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/linux/arch/arm/mach-ux500/
H A Dcpu-db8500.c1 // 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>
35 np = of_find_compatible_node(NULL, NULL, "arm,pl310-cache"); in ux500_l2x0_unlock()
39 return -ENODEV; in ux500_l2x0_unlock()
42 * Unlock Data and Instruction Lock if locked. Ux500 U-Boot versions in ux500_l2x0_unlock()
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/linux/Documentation/driver-api/pm/
H A Ddevices.rst1 .. 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/drivers/devfreq/
H A Dexynos-bus.c1 // 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>
42 * Control the devfreq-event device to get the current state of bus
45 static int exynos_bus_##ops(struct exynos_bus *bus) \
49 for (i = 0; i < bus->edev_count; i++) { \
50 if (!bus->edev[i]) \
52 ret = devfreq_event_##ops(bus->edev[i]); \
63 static int exynos_bus_get_event(struct exynos_bus *bus, in exynos_bus_get_event() argument
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/linux/arch/arm/boot/dts/broadcom/
H A Dbcm2711.dtsi1 // 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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/linux/arch/mips/boot/dts/brcm/
H A Dbcm63268.dtsi1 // SPDX-License-Identifier: GPL-2.0
3 #include "dt-bindings/clock/bcm63268-clock.h"
4 #include "dt-bindings/reset/bcm63268-reset.h"
5 #include "dt-bindings/soc/bcm63268-pm.h"
8 #address-cells = <1>;
9 #size-cells = <1>;
13 #address-cells = <1>;
14 #size-cells = <0>;
16 mips-hpt-frequency = <200000000>;
32 periph_osc: periph-osc {
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