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/linux/Documentation/ABI/testing/
H A Dsysfs-platform-mellanox-bootctl1 What: /sys/bus/platform/devices/MLNXBF04:00/lifecycle_state
6 The Life-cycle state of the SoC, which could be one of the
12 GA Non-Secured Non-Secure chip and not able to change state
16 What: /sys/bus/platform/devices/MLNXBF04:00/post_reset_wdog
25 What: /sys/bus/platform/devices/MLNXBF04:00/reset_action
39 What: /sys/bus/platform/devices/MLNXBF04:00/second_reset_action
56 What: /sys/bus/platform/devices/MLNXBF04:00/secure_boot_fuse_state
72 What: /sys/bus/platform/devices/MLNXBF04:00/bootfifo
79 What: /sys/bus/platform/devices/MLNXBF04:00/rsh_log
85 "[INFO|WARN|ERR|ASSERT ]<msg>". Log level 'INFO' is used by
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H A 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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/linux/include/linux/mtd/
H A 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
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/linux/Documentation/power/
H A 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/arch/arm/mach-s3c/
H A DKconfig1 # SPDX-License-Identifier: GPL-2.0
5 source "arch/arm/mach-s3c/Kconfig.s3c64xx"
13 Base platform code for all Samsung SoC based systems
19 Base platform power management code for samsung code
29 int "S3C UART to use for low-level messages"
33 Choice of which UART port to use for the low-level messages,
36 must have been initialised by the boot-loader before use.
43 Samsung platforms, including static platform devices, legacy
64 chip tracking if the platform requires it.
71 Compile in platform device definitions for HSMMC code
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/linux/include/uapi/linux/
H A Dpfrut.h1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
3 * Platform Firmware Runtime Update header
16 * PFRU_IOC_SET_REV - _IOW(PFRUT_IOCTL_MAGIC, 0x01, unsigned int)
19 * * 0 - success
20 * * -EFAULT - fail to read the revision id
21 * * -EINVAL - user provides an invalid revision id
23 * Set the Revision ID for Platform Firmware Runtime Update.
28 * PFRU_IOC_STAGE - _IOW(PFRUT_IOCTL_MAGIC, 0x02, unsigned int)
31 * * 0 - success
32 * * -EINVAL - stage phase returns invalid result
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/linux/Documentation/admin-guide/pm/
H A 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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H A 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/arch/hexagon/kernel/
H A 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/sound/soc/sof/amd/
H A DKconfig1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
29 This option is not user-selectable but automatically handled by
30 'select' statements at a higher level
37 Select this option for SOF support on AMD Renoir platform
45 on AMD Vangogh platform.
54 Select this option for SOF support on AMD Rembrandt platform
62 This option is not user-selectable but automatically handled by
63 'select' statements at a higher level
82 tristate "SOF support for ACP6.3 platform"
89 Say Y if you want to enable SOF on ACP6.3 based platform.
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/linux/Documentation/devicetree/bindings/opp/
H A 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/Documentation/process/
H A Dmaintainer-soc.rst1 .. SPDX-License-Identifier: GPL-2.0
8 --------
10 The SoC subsystem is a place of aggregation for SoC-specific code.
13 * devicetrees for 32- & 64-bit ARM and RISC-V
14 * 32-bit ARM board files (arch/arm/mach*)
15 * 32- & 64-bit ARM defconfigs
16 * SoC-specific drivers across architectures, in particular for 32- & 64-bit
17 ARM, RISC-V and Loongarch
19 These "SoC-specific drivers" do not include clock, GPIO etc drivers that have
20 other top-level maintainers. The drivers/soc/ directory is generally meant
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/linux/arch/arm/include/asm/
H A 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
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/linux/arch/powerpc/include/asm/
H A 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/tools/power/acpi/man/
H A Dpfrut.85 pfrut \- Platform Firmware Runtime Update and Telemetry tool
11 The PFRUT(Platform Firmware Runtime Update and Telemetry) kernel interface is designed
16 interact with the platform firmware interface defined in the
31 .B \f[B]\-h\f[R], \f[B]\-\-help\f[R]
34 .B \f[B]\-l\f[R], \f[B]\-\-load\f[R]
39 .B \f[B]\-s\f[R], \f[B]\-\-stage\f[R]
43 .B \f[B]\-a\f[R], \f[B]\-\-activate\f[R]
46 .B \f[B]\-u\f[R], \f[B]\-\-update\f[R]
49 .B \f[B]\-q\f[R], \f[B]\-\-query\f[R]
52 .B \f[B]\-d\f[R], \f[B]\-\-setrev\f[R]
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/linux/sound/soc/sof/
H A Dcore.c1 // SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
15 #include "sof-priv.h"
16 #include "sof-of-dev.h"
43 static int override_ipc_type = -1;
45 MODULE_PARM_DESC(ipc_type, "Force SOF IPC type. 0 - IPC3, 1 - IPC4");
57 "Set the IPC timeout value in ms (0 to use the platform default)");
60 "Set the DSP boot timeout value in ms (0 to use the platform default)");
63 /* SOF defaults if not provided by the platform in ms */
68 * sof_debug_check_flag - check if a given flag(s) is set in sof_core_debug
98 {SOF_IPC_PANIC_PLATFORM, "platform init failed"},
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/linux/drivers/powercap/
H A DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
33 In RAPL, the platform level settings are divided into domains for
48 In RAPL, the platform level settings are divided into domains for
50 controller, platform, etc.
72 available by the SCMI platform firmware.
/linux/include/linux/
H A 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)
47 #define platform_get_device_id(pdev) ((pdev)->id_entry)
49 #define dev_is_platform(dev) ((dev)->bus == &platform_bus_type)
83 return ERR_PTR(-EINVAL); in devm_platform_get_and_ioremap_resource()
91 return ERR_PTR(-EINVAL); in devm_platform_ioremap_resource()
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H A Dscmi_protocol.h1 /* SPDX-License-Identifier: GPL-2.0-only */
5 * Copyright (C) 2018-2021 ARM Ltd.
21 * struct scmi_revision_info - version information structure
30 * @impl_ver: A vendor-specific implementation version.
32 * @sub_vendor_id: A sub-vendor identifier(Null terminated ASCII string)
87 * struct scmi_clk_proto_ops - represents the various operations provided
133 * struct scmi_perf_proto_ops - represents the various operations provided
138 * @limits_set: sets limits on the performance level of a domain
139 * @limits_get: gets limits on the performance level of a domain
140 * @level_set: sets the performance level of a domain
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/linux/Documentation/admin-guide/laptops/
H A Dthinkpad-acpi.rst9 - Borislav Deianov <borislav@users.sf.net>
10 - Henrique de Moraes Holschuh <hmh@hmh.eng.br>
12 http://ibm-acpi.sf.net/
19 This driver used to be named ibm-acpi until kernel 2.6.21 and release
20 0.13-20070314. It used to be in the drivers/acpi tree, but it was
21 moved to the drivers/misc tree and renamed to thinkpad-acpi for kernel
22 2.6.22, and release 0.14. It was moved to drivers/platform/x86 for
25 The driver is named "thinkpad-acpi". In some places, like module
29 "tpacpi" is used as a shorthand where "thinkpad-acpi" would be too
33 ------
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/linux/drivers/acpi/dptf/
H A 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.
17 tristate "Platform Power DPTF Participant"
20 This driver adds support for Dynamic Platform and Thermal Framework
21 (DPTF) Platform Power Participant device (INT3407) support.
22 This participant is responsible for exposing platform telemetry:
36 This driver adds support for Dynamic Platform and Thermal Framework
/linux/Documentation/arch/x86/
H A 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
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/linux/Documentation/devicetree/bindings/net/bluetooth/
H A Dmediatek,bluetooth.txt13 - compatible: Must be
14 "mediatek,mt7663u-bluetooth": for MT7663U device
15 "mediatek,mt7668u-bluetooth": for MT7668U device
16 - vcc-supply: Main voltage regulator
18 If the pin controller on the platform can support both pinmux and GPIO
19 control such as the most of MediaTek platform. Please use below properties.
21 - pinctrl-names: Should be "default", "runtime"
22 - pinctrl-0: Should contain UART RXD low when the device is powered up to
24 - pinctrl-1: Should contain UART mode pin ctrl
26 Else, the pin controller on the platform only can support pinmux control and
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/linux/arch/sparc/kernel/
H A 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/Documentation/devicetree/
H A 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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