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/Linux-v5.15/include/linux/mtd/
Dplatnand.h1 /* SPDX-License-Identifier: GPL-2.0 */
3 * Copyright © 2000-2010 David Woodhouse <dwmw2@infradead.org>
7 * Contains all platform NAND related definitions.
18 * struct platform_nand_chip - chip level device structure
26 * @part_probe_types: NULL-terminated array of probe types
40 * struct platform_nand_ctrl - controller level device structure
41 * @probe: platform specific function to probe/setup hardware
42 * @remove: platform specific function to remove/teardown hardware
43 * @dev_ready: platform specific function to read ready/busy pin
44 * @select_chip: platform specific chip select function
[all …]
/Linux-v5.15/Documentation/power/
Dbasic-pm-debugging.rst21 modes causes the PM core to skip some platform-related callbacks which on ACPI
24 "platform" mode::
26 # echo platform > /sys/power/disk
31 Unfortunately, the "platform" mode of hibernation does not work on some systems
41 If neither "platform" nor "shutdown" hibernation mode works, you will need to
45 ----------------------------
53 - test the freezing of processes
56 - test the freezing of processes and suspending of devices
58 platform
59 - test the freezing of processes, suspending of devices and platform
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/Linux-v5.15/Documentation/ABI/testing/
Dsysfs-driver-samsung-laptop1 What: /sys/devices/platform/samsung/performance_level
4 Contact: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 will show the current performance level. Writing to the
14 - "silent"
15 - "normal"
16 - "overclock"
23 What: /sys/devices/platform/samsung/battery_life_extender
27 Description: Max battery charge level can be modified, battery cycle
29 level.
31 - 0 means normal battery mode (100% charge)
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Dsysfs-platform-lg-laptop1 What: /sys/devices/platform/lg-laptop/reader_mode
4 Contact: "Matan Ziv-Av <matan@svgalib.org>
8 What: /sys/devices/platform/lg-laptop/fn_lock
11 Contact: "Matan Ziv-Av <matan@svgalib.org>
15 What: /sys/devices/platform/lg-laptop/battery_care_limit
18 Contact: "Matan Ziv-Av <matan@svgalib.org>
20 Maximal battery charge level. Accepted values are 80 or 100.
22 What: /sys/devices/platform/lg-laptop/fan_mode
25 Contact: "Matan Ziv-Av <matan@svgalib.org>
29 What: /sys/devices/platform/lg-laptop/usb_charge
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Dsysfs-driver-ufs3 Contact: linux-scsi@vger.kernel.org
5 This file contains the auto-hibernate idle timer setting of a
6 UFS host controller. A value of '0' means auto-hibernate is not
11 10-bit values with a power-of-ten multiplier which allows a
15 What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/device_type
24 What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/device_class
33 What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/device_sub_class
42 What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/protocol
52 What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/number_of_luns
61 What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/number_of_wluns
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/Linux-v5.15/arch/hexagon/kernel/
Dirq_cpu.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * First-level interrupt controller model for Hexagon.
5 * Copyright (c) 2010-2011, The Linux Foundation. All rights reserved.
14 __vmintop_locdis((long) data->irq); in mask_irq()
24 __vmintop_locen((long) data->irq); in unmask_irq()
30 __vmintop_globen((long) data->irq); in eoi_irq()
34 * if this is absent, then an -ENXIO error is returned to the
54 * The hexagon core comes with a first-level interrupt controller
57 * macro cells that provide one or more second-level interrupt
58 * controllers that are cascaded into one or more of the first-level
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/Linux-v5.15/arch/arm/mach-s3c/
DKconfig1 # SPDX-License-Identifier: GPL-2.0
5 source "arch/arm/mach-s3c/Kconfig.s3c24xx"
6 source "arch/arm/mach-s3c/Kconfig.s3c64xx"
16 Base platform code for all Samsung SoC based systems
23 Base platform power management code for samsung code
33 int "S3C UART to use for low-level messages"
37 Choice of which UART port to use for the low-level messages,
40 must have been initialised by the boot-loader before use.
47 Samsung platforms, including static platform devices, legacy
68 chip tracking if the platform requires it.
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/Linux-v5.15/Documentation/devicetree/bindings/opp/
Dopp-v2-base.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/opp/opp-v2-base.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Viresh Kumar <viresh.kumar@linaro.org>
13 Devices work at voltage-current-frequency combinations and some implementations
25 pattern: '^opp-table(-[a-z0-9]+)?$'
27 opp-shared:
36 '^opp-?[0-9]+$':
39 One or more OPP nodes describing voltage-current-frequency combinations.
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/Linux-v5.15/Documentation/admin-guide/pm/
Dsleep-states.rst1 .. SPDX-License-Identifier: GPL-2.0
13 Sleep states are global low-power states of the entire system in which user
21 Depending on its configuration and the capabilities of the platform it runs on,
28 Suspend-to-Idle
29 ---------------
31 This is a generic, pure software, light-weight variant of system suspend (also
34 I/O devices into low-power states (possibly lower-power than available in the
38 The system is woken up from this state by in-band interrupts, so theoretically
43 or :ref:`suspend-to-RAM <s2ram>`, or it can be used in addition to any of the
50 -------
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Dintel-speed-select.rst1 .. 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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/Linux-v5.15/arch/arm/
DKconfig.debug1 # SPDX-License-Identifier: GPL-2.0
44 once the kernel has booted up - it's a one time check.
98 1 - undefined instruction events
99 2 - system calls
100 4 - invalid data aborts
101 8 - SIGSEGV faults
102 16 - SIGBUS faults
106 bool "Kernel low-level debugging functions (read help!)"
115 image on a different platform *will not work*, so this option should
119 prompt "Kernel low-level debugging port"
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/Linux-v5.15/arch/powerpc/include/asm/
Dpmac_pfunc.h1 /* SPDX-License-Identifier: GPL-2.0 */
20 * Arguments to a platform function call.
42 * ends with an end() call. This allows the low level driver to implement
43 * locking policy or per-function instance data.
116 * Drivers who expose platform functions register at init time, this
117 * causes the platform functions for that device node to be parsed in
119 * partially public so a driver can walk the list of platform functions
135 /* The name is the "xxx" in "platform-do-xxx", this is how
136 * platform functions are identified by this code. Some functions
160 * For platform functions that are interrupts, one can register
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/Linux-v5.15/drivers/platform/chrome/
DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
3 # Platform support for Chrome OS hardware (Chromebooks and Chromeboxes)
7 bool "Platform support for Chrome hardware"
10 Say Y here to get to see options for platform support for
36 The range of memory used is 0xf00000-0x1000000, traditionally
72 EC through an I2C bus. This uses a simple byte-level protocol with
81 through rpmsg. This uses a simple byte-level protocol with a
82 checksum. Also since there's no addition EC-to-host interrupt, this
95 ISH Transport protocol (ISH-TP). This uses a simple byte-level
107 through a SPI bus, using a byte-level protocol. Since the EC's
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/Linux-v5.15/arch/arm/include/asm/
Dmcpm.h1 /* SPDX-License-Identifier: GPL-2.0-only */
6 * Copyright: (C) 2012-2013 Linaro Limited
33 * Platform specific code should use this symbol to set up secondary
40 * branch once it is ready to re-enter the kernel using ptr, or NULL if it
59 * mcpm_is_available - returns whether MCPM is initialized and available
66 * mcpm_cpu_power_up - make given CPU in given cluster runable
87 * mcpm_cpu_power_down - power the calling CPU down
92 * then the cluster is prepared for power-down too.
96 * On success this does not return. Re-entry in the kernel is expected
103 * mcpm_wait_for_cpu_powerdown() subsequently returns non-zero for the
[all …]
/Linux-v5.15/include/linux/
Dplatform_device.h1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * platform_device.h - generic, centralized driver model
5 * Copyright (c) 2001-2003 Patrick Mochel <mochel@osdl.org>
7 * See Documentation/driver-api/driver-model/ for more information.
15 #define PLATFORM_DEVID_NONE (-1)
16 #define PLATFORM_DEVID_AUTO (-2)
43 #define platform_get_device_id(pdev) ((pdev)->id_entry)
45 #define dev_is_platform(dev) ((dev)->bus == &platform_bus_type)
108 * platform_device_register_resndata - add a platform-level device with
109 * resources and platform-specific data
[all …]
Dscmi_protocol.h1 /* SPDX-License-Identifier: GPL-2.0-only */
5 * Copyright (C) 2018-2021 ARM Ltd.
20 * struct scmi_revision_info - version information structure
29 * @impl_ver: A vendor-specific implementation version.
31 * @sub_vendor_id: A sub-vendor identifier(Null terminated ASCII string)
64 * struct scmi_clk_proto_ops - represents the various operations provided
88 * struct scmi_perf_proto_ops - represents the various operations provided
91 * @limits_set: sets limits on the performance level of a domain
92 * @limits_get: gets limits on the performance level of a domain
93 * @level_set: sets the performance level of a domain
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/Linux-v5.15/drivers/acpi/dptf/
DKconfig1 # SPDX-License-Identifier: GPL-2.0
4 bool "Intel DPTF (Dynamic Platform and Thermal Framework) Support"
7 Intel Dynamic Platform and Thermal Framework (DPTF) is a platform
8 level hardware/software solution for power and thermal management.
15 <https://01.org/intel%C2%AE-dynamic-platform-and-thermal-framework-dptf-chromium-os/overview>
20 tristate "Platform Power DPTF Participant"
23 This driver adds support for Dynamic Platform and Thermal Framework
24 (DPTF) Platform Power Participant device (INT3407) support.
25 This participant is responsible for exposing platform telemetry:
39 This driver adds support for Dynamic Platform and Thermal Framework
/Linux-v5.15/Documentation/devicetree/bindings/interrupt-controller/
Dsifive,plic-1.0.0.yaml1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
4 ---
5 $id: http://devicetree.org/schemas/interrupt-controller/sifive,plic-1.0.0.yaml#
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
8 title: SiFive Platform-Level Interrupt Controller (PLIC)
11 SiFive SoCs and other RISC-V SoCs include an implementation of the
12 Platform-Level Interrupt Controller (PLIC) high-level specification in
13 the RISC-V Privileged Architecture specification. The PLIC connects all
18 in an 4 core system with 2-way SMT, you have 8 harts and probably at least two
21 Each interrupt can be enabled on per-context basis. Any context can claim
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/Linux-v5.15/Documentation/x86/
Dintel_txt.rst6 Technology (Intel(R) TXT), defines platform-level enhancements that
13 - Provides dynamic root of trust for measurement (DRTM)
14 - Data protection in case of improper shutdown
15 - Measurement and verification of launched environment
18 non-vPro systems. It is currently available on desktop systems
30 - LinuxTAG 2008:
31 http://www.linuxtag.org/2008/en/conf/events/vp-donnerstag.html
33 - TRUST2008:
34 http://www.trust-conference.eu/downloads/Keynote-Speakers/
35 3_David-Grawrock_The-Front-Door-of-Trusted-Computing.pdf
[all …]
/Linux-v5.15/Documentation/devicetree/
Dusage-model.rst1 .. SPDX-License-Identifier: GPL-2.0
44 ----------
56 In 2005, when PowerPC Linux began a major cleanup and to merge 32-bit
57 and 64-bit support, the decision was made to require DT support on all
61 blob without requiring a real Open Firmware implementation. U-Boot,
66 existing non-DT aware firmware.
71 out of mainline (nios) have some level of DT support.
74 -------------
78 2.1 High Level View
79 -------------------
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/Linux-v5.15/drivers/base/
Dplatform.c1 // SPDX-License-Identifier: GPL-2.0
3 * platform.c - platform 'pseudo' bus for legacy devices
5 * Copyright (c) 2002-3 Patrick Mochel
6 * Copyright (c) 2002-3 Open Source Development Labs
8 * Please see Documentation/driver-api/driver-model/platform.rst for more
20 #include <linux/dma-mapping.h>
28 #include <linux/clk/clk-conf.h>
41 .init_name = "platform",
46 * platform_get_resource - get a resource for a device
47 * @dev: platform device
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/Linux-v5.15/arch/sparc/kernel/
Dmdesc.c1 // SPDX-License-Identifier: GPL-2.0
26 /* Unlike the OBP device tree, the machine description is a full-on
107 {"virtual-device-port", get_vdev_port_node_info,
109 {"domain-services-port", get_ds_port_node_info,
153 BUG_ON(((unsigned long)&hp->mdesc) & (16UL - 1)); in mdesc_handle_init()
156 INIT_LIST_HEAD(&hp->list); in mdesc_handle_init()
157 hp->self_base = base; in mdesc_handle_init()
158 refcount_set(&hp->refcnt, 1); in mdesc_handle_init()
159 hp->handle_size = handle_size; in mdesc_handle_init()
168 handle_size = (sizeof(struct mdesc_handle) - in mdesc_memblock_alloc()
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/Linux-v5.15/sound/soc/sof/
DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
21 For backwards-compatibility with previous configurations the selection will
22 be used as default for platform-specific drivers.
32 For backwards-compatibility with previous configurations the selection will
33 be used as default for platform-specific drivers.
107 during topology creation or run-time usage if new functionality
130 though there is a codec detected on the real platform. This is
149 human-readable form instead of just 32-bit hex dumps. This is useful
159 On platforms (e.g. Intel SKL-) where position update IPC is the only
169 memory -> DSP resource (memory, register, etc)
[all …]
/Linux-v5.15/arch/arc/include/asm/
Dmach_desc.h1 /* SPDX-License-Identifier: GPL-2.0-only */
12 * struct machine_desc - Board specific callbacks, called from ARC common code
14 * a multi-platform kernel builds with array of such descriptors.
25 * @init_machine: arch initcall level callback (e.g. populate static
26 * platform devices or parse Devicetree)
27 * @init_late: Late initcall level callback
41 * Current machine - only accessible during boot.
46 * Machine type table - also only accessible during boot
/Linux-v5.15/Documentation/userspace-api/
Dsysfs-platform_profile.rst2 Platform Profile Selection (e.g. /sys/firmware/acpi/platform_profile)
5 On modern systems the platform performance, temperature, fan and other
7 platform configuration is often automatically adjusted to the current
11 These auto platform adjustment mechanisms often can be configured with
12 one of several platform profiles, with either a bias towards low power
16 API for selecting the platform profile of these automatic mechanisms.
18 Note that this API is only for selecting the platform profile, it is
27 about any sub-optimal conditions which are impeding reaching the requested
28 performance level.
33 gets a consistent experience the sysfs-platform_profile ABI document defines
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