| /openbmc/qemu/docs/devel/ |
| H A D | kconfig.rst | 13 SCSI adapters. Arm, s390 and x86 boards can all present a virtio-blk
16 Each QEMU target enables a subset of the boards, devices and buses that
21 QEMU uses a simple domain-specific language to describe the dependencies
24 * new targets and boards can be added without knowing in detail the
27 include all the required dependencies and all the devices that the
31 of boards or devices. For example, by default most targets will include
32 all emulated PCI devices that QEMU supports, but the build process is
36 This domain-specific language is based on the Kconfig language that
41 is instead specified in per-target files under the ``configs/``
44 QEMU; the default configuration that QEMU ships with should be okay in
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| /openbmc/u-boot/drivers/mtd/ubi/ |
| H A D | Kconfig | 5 default ENV_IS_IN_UBI
11 bool "Enable UBI - Unsorted block images"
16 UBI is a software layer above MTD layer which admits of LVM-like
17 logical volumes on top of MTD devices, hides some complexities of
20 (www.linux-mtd.infradead.org).
25 int "UBI wear-leveling threshold"
26 default 4096
31 of UBI devices. When this threshold is exceeded, UBI starts performing
35 The default value should be OK for SLC NAND flashes, NOR flashes and
36 other flashes which have eraseblock life-cycle 100000 or more.
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| /openbmc/qemu/docs/system/s390x/ |
| H A D | bootdevices.rst | 1 Boot devices on s390x
5 --------------------------------
9 in s390x-speak -- IPL means "Initial Program Load").
15 qemu-system-s390x -drive if=none,id=dr1,file=guest.qcow2 \
16 -device virtio-blk,drive=dr1,bootindex=1
18 Multiple devices may have a bootindex. The lowest bootindex is assigned to the
21 remaining boot devices to try.
23 For booting from a CD-ROM ISO image (which needs to include El-Torito boot
24 information in order to be bootable), it is recommended to specify a ``scsi-cd``
27 qemu-system-s390x -blockdev file,node-name=c1,filename=... \
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| /openbmc/linux/drivers/platform/surface/ |
| H A D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0-only
3 # Microsoft Surface Platform-Specific Drivers
7 bool "Microsoft Surface Platform-Specific Device Drivers"
9 default y
11 Say Y here to get to see options for platform-specific device drivers
12 for Microsoft Surface devices. This option alone does not add any
29 be called surface3-wmi.
43 Surface ACPI Notify (SAN) driver for Microsoft Surface devices.
47 on 5th- and 6th-generation Microsoft Surface devices (including
55 thermal sensor access, and real-time clock information, depending on
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| /openbmc/linux/drivers/hid/ |
| H A D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0-only
7 default y
17 default y
22 most commonly used to refer to the USB-HID specification, but other
23 devices (such as, but not strictly limited to, Bluetooth) are
26 together with generic HID layer code. The HID devices are added and
27 removed from the HID bus by the transport-layer drivers, such as
37 bool "Battery level reporting for HID devices"
39 default n
41 This option adds support of reporting battery strength (for HID devices
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| /openbmc/linux/drivers/net/ethernet/emulex/benet/ |
| H A D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0-only
3 tristate "ServerEngines' 10Gbps NIC - BladeEngine"
7 10Gbps network adapter - BladeEngine.
13 default y
21 default y
23 Say Y here if you want to use devices based on BE2
29 default y
31 Say Y here if you want to use devices based on BE3
37 default y
39 Say Y here if you want to use devices based on Lancer
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| /openbmc/qemu/docs/system/i386/ |
| H A D | microvm.rst | 7 It's a minimalist machine type without ``PCI`` nor ``ACPI`` support,
8 designed for short-lived guests. microvm also establishes a baseline
13 Supported devices
14 -----------------
16 The microvm machine type supports the following devices:
18 - ISA bus
19 - i8259 PIC (optional)
20 - i8254 PIT (optional)
21 - MC146818 RTC (optional)
22 - One ISA serial port (optional)
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| /openbmc/linux/drivers/xen/ |
| H A D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0-only
7 default y
16 default y
21 run without rebooting.
29 effect by checking /sys/devices/system/memory/auto_online_blocks
32 2) control domain: xl mem-max <target-domain> <maxmem>
35 3) control domain: xl mem-set <target-domain> <memory>
38 /sys/devices/system/xen_memory/xen_memory0/target or
39 /sys/devices/system/xen_memory/xen_memory0/target_kb on the
46 for i in /sys/devices/system/memory/memory*/state; do \
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| /openbmc/linux/drivers/vfio/ |
| H A D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0-only
3 tristate "VFIO Non-Privileged userspace driver framework"
12 See Documentation/driver-api/vfio.rst for more details.
18 bool "Support for the VFIO cdev /dev/vfio/devices/vfioX"
20 default !VFIO_GROUP
24 /dev/vfio/devices/vfioX, and then bind the device fd with an iommufd
32 default y
35 devices through VFIO and is used by the majority of userspace
44 default y
55 default n
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| /openbmc/u-boot/drivers/serial/ |
| H A D | Kconfig | 8 int "Default baudrate"
9 default 115200
11 Select a default baudrate, where "default" has a driver-specific
13 in the SPL stage (most drivers) or for choosing a default baudrate
18 # Running without a serial console is not supported by the
19 # non-dm serial code
21 default y
24 during serial port initialization (default y). Set this to n on
29 default y if !DM_SERIAL || (SPL && !SPL_DM_SERIAL) || \
32 In various cases, we need to specify which of the UART devices that
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| /openbmc/linux/Documentation/w1/slaves/ |
| H A D | w1_ds28e17.rst | 7 * Maxim DS28E17 1-Wire-to-I2C Master Bridge
19 -----------
23 come and go as the DS28E17 devices come and go. I2C slave devices connected to
30 SUBSYSTEM=="i2c-dev", KERNEL=="i2c-[0-9]*", ATTRS{name}=="w1-19-*", \
31 SYMLINK+="i2c-$attr{name}"
33 may be used to create stable /dev/i2c- entries based on the unique id of the
40 This sets up the default I2C speed a DS28E17 get configured for as soon
41 it is connected. The power-on default of the DS28E17 is 400kBaud, but
42 chips may come and go on the Onewire bus without being de-powered and
44 reconnected DS28E17 device on the Onewire bus, it will re-apply this
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| /openbmc/linux/Documentation/sound/designs/ |
| H A D | seq-oss.rst | 15 What this does - it provides the emulation of the OSS sequencer, access
16 via ``/dev/sequencer`` and ``/dev/music`` devices.
53 However, each MIDI device is exclusive - that is, if a MIDI device
55 it. No such a restriction in synth devices.
57 * Real-time event processing:
59 The events can be processed in real time without using out of bound
60 ioctl. To switch to real-time mode, send ABSTIME 0 event. The followed
61 events will be processed in real-time without queued. To switch off the
62 real-time mode, send RELTIME 0 event.
66 The status of applications and devices can be shown via
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| /openbmc/linux/drivers/acpi/ |
| H A D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0
15 default y if X86
18 Linux requires an ACPI-compliant platform (hardware/firmware),
19 and assumes the presence of OS-directed configuration and power
25 the Plug-and-Play BIOS specification (PnP BIOS), the
35 ACPI is an open industry specification originally co-developed by
36 Hewlett-Packard, Intel, Microsoft, Phoenix, and Toshiba. Currently,
67 Enable in-kernel debugging of AML facilities: statistics,
85 default y if X86
102 default y
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| /openbmc/linux/Documentation/devicetree/bindings/net/wireless/ |
| H A D | silabs,wfx.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
4 ---
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
11 - Jérôme Pouiller <jerome.pouiller@silabs.com>
16 https://www.silabs.com/documents/public/data-sheets/wf200-datasheet.pdf
23 sufficient for the SDIO devices).
25 It is recommended to declare a mmc-pwrseq on SDIO host above WFx. Without
26 it, you may encounter issues during reboot. The mmc-pwrseq should be
27 compatible with mmc-pwrseq-simple. Please consult
28 Documentation/devicetree/bindings/mmc/mmc-pwrseq-simple.yaml for more
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| /openbmc/linux/tools/power/cpupower/man/ |
| H A D | cpupower-frequency-set.1 | 1 .TH "CPUPOWER\-FREQUENCY\-SET" "1" "0.1" "" "cpupower Manual"
4 cpupower\-frequency\-set \- A small tool which allows to modify cpufreq settings.
7 cpupower [ \-c cpu ] frequency\-set [\fIoptions\fP]
10 cpupower frequency\-set allows you to modify cpufreq settings without having to type e.g. "/sys/dev…
14 \fB\-d\fR \fB\-\-min\fR <FREQ>
17 \fB\-u\fR \fB\-\-max\fR <FREQ>
20 \fB\-g\fR \fB\-\-governor\fR <GOV>
23 \fB\-f\fR \fB\-\-freq\fR <FREQ>
26 \fB\-r\fR \fB\-\-related\fR
27 modify all hardware-related CPUs at the same time
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| /openbmc/linux/drivers/mtd/ubi/ |
| H A D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0-only
3 tristate "Enable UBI - Unsorted block images"
6 UBI is a software layer above MTD layer which admits use of LVM-like
7 logical volumes on top of MTD devices, hides some complexities of
10 (www.linux-mtd.infradead.org).
15 int "UBI wear-leveling threshold"
16 default 4096
21 of UBI devices. When this threshold is exceeded, UBI starts performing
25 The default value should be OK for SLC NAND flashes, NOR flashes and
26 other flashes which have eraseblock life-cycle 100000 or more.
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| /openbmc/linux/Documentation/admin-guide/ |
| H A D | bcache.rst | 11 This is the git repository of bcache-tools:
12 https://git.kernel.org/pub/scm/linux/kernel/git/colyli/bcache-tools.git/
17 It's designed around the performance characteristics of SSDs - it only allocates
25 great lengths to protect your data - it reliably handles unclean shutdown. (It
29 Writeback caching can use most of the cache for buffering writes - writing
36 average is above the cutoff it will skip all IO from that task - instead of
47 You'll need bcache util from the bcache-tools repository. Both the cache device
50 bcache make -B /dev/sdb
51 bcache make -C /dev/sdc
53 `bcache make` has the ability to format multiple devices at the same time - if
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| /openbmc/linux/drivers/gpu/drm/amd/amdgpu/ |
| H A D | amdgpu_encoders.c | 2 * Copyright 2007-8 Advanced Micro Devices, Inc.
7 * to deal in the Software without restriction, including without limitation
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
48 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { in amdgpu_link_encoder_connector()
50 if (amdgpu_encoder->devices & amdgpu_connector->devices) { in amdgpu_link_encoder_connector()
52 if (amdgpu_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT)) { in amdgpu_link_encoder_connector()
54 adev->mode_info.bl_encoder = amdgpu_encoder; in amdgpu_link_encoder_connector()
64 struct drm_device *dev = encoder->dev; in amdgpu_encoder_set_active_device()
71 if (connector->encoder == encoder) { in amdgpu_encoder_set_active_device()
74 amdgpu_encoder->active_device = amdgpu_encoder->devices & amdgpu_connector->devices; in amdgpu_encoder_set_active_device()
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| /openbmc/linux/include/linux/platform_data/ |
| H A D | brcmfmac.h | 5 * purpose with or without fee is hereby granted, provided that the above
34 * Note: the brcmfmac can be loaded as module or be statically built-in into
35 * the kernel. If built-in then do note that it uses module_init (and
38 * it built-in to the kernel then use a higher initcall then device_initcall
39 * (see init.h). If this is not done then brcmfmac will load without problems
43 * without reporting anything and just assume there is no data needed. Which is
48 * enum brcmf_bus_type - Bus type identifier. Currently SDIO, USB and PCIE are
59 * struct brcmfmac_sdio_pd - SDIO Device specific platform data.
61 * @txglomsz: SDIO txglom size. Use 0 if default of driver is to be
64 * pins. If 0 then a default value will be used. This is
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| /openbmc/linux/drivers/cxl/ |
| H A D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0-only
3 tristate "CXL (Compute Express Link) Devices Support"
11 CXL.mem). The CXL.cache protocol allows devices to hold cachelines
12 locally, the CXL.mem protocol allows devices to be fully coherent
15 devices supporting these protocols.
21 default CXL_BUS
23 The CXL specification defines a "CXL memory device" sub-class in the
24 PCI "memory controller" base class of devices. Device's identified by
26 memory to be mapped into the system address map (Host-managed Device
30 devices enumerated by the memory device class code for configuration
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| /openbmc/linux/arch/xtensa/ |
| H A D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0
58 Xtensa processors are 32-bit RISC machines designed by Tensilica
63 a home page at <http://www.linux-xtensa.org/>.
82 default 100
99 default 0x6e400000
102 def_bool $(success,test "$(shell,echo __XTENSA_EB__ | $(CC) -E -P -)" = 1)
108 …def_bool $(success,test "$(shell,echo __XTENSA_CALL0_ABI__ | $(CC) -mabi=call0 -E -P - 2>/dev/null…
114 default XTENSA_VARIANT_FSF
117 bool "fsf - default (not generic) configuration"
121 bool "dc232b - Diamond 232L Standard Core Rev.B (LE)"
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| /openbmc/linux/drivers/gpu/drm/radeon/ |
| H A D | radeon_encoders.c | 2 * Copyright 2007-8 Advanced Micro Devices, Inc.
7 * to deal in the Software without restriction, including without limitation
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
41 struct drm_device *dev = encoder->dev; in radeon_encoder_clones()
42 struct radeon_device *rdev = dev->dev_private; in radeon_encoder_clones()
49 if (rdev->family >= CHIP_R600) in radeon_encoder_clones()
52 if (radeon_encoder->devices & ATOM_DEVICE_LCD_SUPPORT) in radeon_encoder_clones()
55 if (radeon_encoder->devices & ATOM_DEVICE_DFP2_SUPPORT) in radeon_encoder_clones()
58 count = -1; in radeon_encoder_clones()
59 list_for_each_entry(clone_encoder, &dev->mode_config.encoder_list, head) { in radeon_encoder_clones()
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| /openbmc/linux/fs/romfs/ |
| H A D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0-only
6 This is a very small read-only file system mainly intended for
8 other read-only media as well. Read
25 default ROMFS_BACKED_BY_BLOCK
30 bool "Block device-backed ROM file system support"
33 This permits ROMFS to use block devices buffered through the page
40 bool "MTD-backed ROM file system support"
43 This permits ROMFS to use MTD based devices directly, without the
45 also allows direct mapping of MTD devices through romfs files under
59 default y if ROMFS_BACKED_BY_BLOCK || ROMFS_BACKED_BY_BOTH
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| /openbmc/linux/sound/ppc/ |
| H A D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0-only
5 bool "PowerPC sound devices"
7 default y
9 Support for sound devices specific to PowerPC architectures.
22 will be called snd-powermac.
25 bool "Toggle DRC automatically at headphone/line plug-in"
27 default y
34 Note that you can turn on/off DRC manually even without this
41 default m
51 default "2000"
|
| /openbmc/linux/Documentation/userspace-api/media/v4l/ |
| H A D | dev-subdev.rst | 1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
6 Sub-device Interface
9 The complex nature of V4L2 devices, where hardware is often made of
13 components as software blocks called sub-devices.
15 V4L2 sub-devices are usually kernel-only objects. If the V4L2 driver
17 media entities. Applications will be able to enumerate the sub-devices
21 In addition to make sub-devices discoverable, drivers can also choose to
23 sub-device driver and the V4L2 device driver support this, sub-devices
26 - query, read and write sub-devices controls
28 - subscribe and unsubscribe to events and retrieve them
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