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/Documentation/userspace-api/media/v4l/
Dpixfmt-reserved.rst50 - 8 bit RGB format used by the BTTV driver.
55 - YUV format used by the gspca cpia1 driver.
60 - JPEG-Light format (Pegasus Lossless JPEG) used in Divio webcams NW
66 - YUYV per line used by the gspca driver.
71 - YYUV per line used by the gspca driver.
76 - YUVY per line used by the gspca driver.
81 - Compressed GBRG Bayer format used by the gspca driver.
86 - Compressed BGGR Bayer format used by the gspca driver.
91 - Compressed BGGR Bayer format used by the gspca driver.
96 - JPEG compressed RGGB Bayer format used by the gspca driver.
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/Documentation/ABI/testing/
Dconfigfs-spear-pcie-gadget7 Interface is used to configure selected dual mode PCIe controller
10 This interfaces can be used to show spear's PCIe device capability.
20 link used to enable ltssm and read its status.
21 int_type used to configure and read type of supported interrupt
22 no_of_msi used to configure number of MSI vector needed and
26 vendor_id used to write and read vendor id (hex)
27 device_id used to write and read device id (hex)
28 bar0_size used to write and read bar0_size
29 bar0_address used to write and read bar0 mapped area in hex.
30 bar0_rw_offset used to write and read offset of bar0 where bar0_data
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Dconfigfs-most4 Description: Interface is used to configure and connect device channels
27 configure number of buffers used for this
39 configure DBR data buffer size (this is used
45 transmitted via USB (this is used for USB
82 configure number of buffers used for this
94 configure DBR data buffer size (this is used
100 transmitted via USB (this is used for USB
137 configure number of buffers used for this
149 configure DBR data buffer size (this is used
155 transmitted via USB (this is used for USB
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Dsysfs-bus-iio-timer-stm3210 used as trigger output (TRGO).
12 The Counter Enable signal CNT_EN is used
16 For instance a master timer can then be used
22 OC1REF signal is used as trigger output.
24 OC2REF signal is used as trigger output.
26 OC3REF signal is used as trigger output.
28 OC4REF signal is used as trigger output.
33 OC5REF signal is used as trigger output.
35 OC6REF signal is used as trigger output.
/Documentation/admin-guide/
Dufs.rst12 UFS is a file system widely used in different operating systems.
23 used in FreeBSD, NetBSD, OpenBSD
27 used in FreeBSD 5.x
34 used in SunOS (Solaris)
38 used in SunOS for Intel (Solarisx86)
42 used in HP-UX
46 used in NextStep
50 used for NextStep CDROMs (block_size == 2048)
54 used in OpenStep
/Documentation/arch/arm/
Dsetup.rst6 structure, otherwise known as 'struct param_struct' which is used
9 This structure is used to pass initialisation parameters from the
30 This is now obsolete, and should not be used.
47 or VGA console character size. They should not be used for any other
56 is otherwise unused. (should not be used for other console types, and
57 should not be used for other purposes).
61 based machines. May be used differently by different architectures.
64 Default sound setting on Acorn machines. May be used differently by
68 Number of ADFS/MFM disks. May be used differently by different
72 These are now obsolete, and should not be used.
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/Documentation/input/
Devent-codes.rst10 may be used.
14 used to separate input events into packets of input data changes occurring at
31 type has a set of applicable codes to be used in generating events. See the
36 - Used as markers to separate events. Events may be separated in time or in
41 - Used to describe state changes of keyboards, buttons, or other key-like
46 - Used to describe relative axis value changes, e.g. moving the mouse 5 units
51 - Used to describe absolute axis value changes, e.g. describing the
56 - Used to describe miscellaneous input data that do not fit into other types.
60 - Used to describe binary state input switches.
64 - Used to turn LEDs on devices on and off.
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/Documentation/admin-guide/kdump/
Dvmcoreinfo.rst11 section and used by user-space tools like crash and makedumpfile to
20 The version of the Linux kernel. Used to find the corresponding source
27 The size of a page. It is the smallest unit of data used by the memory
29 aligned on 4096 bytes. Used for computing page addresses.
34 The UTS namespace which is used to isolate two specific elements of the
36 data structure used to store information returned by the uname(2) system
52 in a system, one bit position per node number. Used to keep track of
58 The global page directory pointer of the kernel. Used to translate
65 the kernel start address. Used to convert a virtual address from the
82 Used to map an address to the corresponding struct page.
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/Documentation/driver-api/gpio/
Ddrivers-on-gpio.rst17 - gpio-keys: drivers/input/keyboard/gpio_keys.c is used when your GPIO line
20 - gpio-keys-polled: drivers/input/keyboard/gpio_keys_polled.c is used when your
24 - gpio_mouse: drivers/input/mouse/gpio_mouse.c is used to provide a mouse with
29 - gpio-beeper: drivers/input/misc/gpio-beeper.c is used to provide a beep from
33 - pwm-gpio: drivers/pwm/pwm-gpio.c is used to toggle a GPIO with a high
37 - extcon-gpio: drivers/extcon/extcon-gpio.c is used when you need to read an
41 - restart-gpio: drivers/power/reset/gpio-restart.c is used to restart/reboot
45 - poweroff-gpio: drivers/power/reset/gpio-poweroff.c is used to power the
50 - gpio-gate-clock: drivers/clk/clk-gpio.c is used to control a gated clock
53 - i2c-gpio: drivers/i2c/busses/i2c-gpio.c is used to drive an I2C bus
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/Documentation/admin-guide/device-mapper/
Ddm-zoned.rst26 instance is at most 4.5 MB and as little as 5 zones will be used
39 Conventional zones are used for caching as well as for storing internal
48 1) Metadata zones: these are conventional zones used to store metadata.
52 sequential zones used exclusively to store user data. The conventional
53 zones of the device may be used also for buffering user random writes.
60 device being used. This allows reducing the amount of metadata needed to
69 2) Following the super block, a set of blocks is used to describe the
75 zone used to buffer random modification to the data zone.
77 3) A set of blocks used to store bitmaps indicating the validity of
106 be exhausted (all used to map chunks or buffer sequential zones) and
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/Documentation/devicetree/bindings/soc/fsl/cpm_qe/cpm/
Di2c.txt13 - clock-frequency : Can be used to set the i2c clock frequency. If
14 unspecified, a default frequency of 60kHz is being used.
15 The following two properties are deprecated. They are only used by legacy
17 - linux,i2c-index : Can be used to hard code an i2c bus number. By default,
19 - linux,i2c-class : Can be used to override the i2c class. The class is used
22 being used. The definition of the classes can be found in
/Documentation/devicetree/bindings/power/supply/
Dsamsung,battery.yaml14 of lithium ion chemistry devices used for mobile phones, laptops and other
25 description: 3.8V 1500 mAh battery used in Samsung GT-I8190
27 description: 3.8V 1500 mAh battery used in Samsung SGH-T599 and SGH-I407
29 description: 3.8V 1500 mAh battery used in Samsung GT-I8160
31 description: 3.8V 1700 mAh battery used in Samsung GT-S7710
33 description: 3.8V 1500 mAh battery used in Samsung GT-I9070
35 description: 3.8V 2000 mAh battery used in Samsung GT-I8530
/Documentation/userspace-api/media/dvb/
Dfe_property_parameters.rst9 There are several different Digital TV parameters that can be used by
20 Used internally. A GET/SET operation for it won't change or return
105 delivery system enum value is used (SYS_DVBS2).
180 Used on cable and satellite delivery systems.
190 Used on cable and satellite delivery systems.
200 Used on satellite delivery systems.
202 The voltage is usually used with non-DiSEqC capable LNBs to switch the
215 Currently not used.
223 Used on DVB-S2.
235 Used on DVB-S2.
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/Documentation/driver-api/media/drivers/
Drkisp1.rst12 - V10: used at least in rk3288 and rk3399
13 - V11: declared in the original vendor code, but not used
14 - V12: used at least in rk3326 and px30
15 - V13: used at least in rk1808
16 - V20: used in rk3568 and beyond
19 on V10 and V12 variants. V11 does not seem to be actually used
24 V20 on the other hand will probably be used in future SoCs and
/Documentation/devicetree/bindings/usb/
Dmediatek,mtk-xhci.yaml61 - description: optional, wakeup interrupt used to support runtime PM
76 - description: Controller clock used by normal mode
77 - description: Reference clock used by low power mode etc
95 List of all PHYs used on this HCD, it's better to keep PHYs in order
131 It is a quirk used to work around Gen1 isoc-in endpoint transfer issue
139 # the following properties are only used for case 1
148 A phandle to syscon used to access the register of the USB wakeup glue
159 1 - used by mt8173 etc, revision 1 without following IPM rule;
160 2 - used by mt2712 etc, revision 2 following IPM rule;
161 101 - used by mt8183, specific 1.01;
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Damlogic,meson-g12a-usb-ctrl.yaml78 description: VBUS power supply when used in OTG switchable mode
113 - const: usb2-phy0 # USB2 PHY0 if USBHOST_A port is used
114 - const: usb2-phy1 # USB2 PHY1 if USBOTG_B port is used
115 - const: usb3-phy0 # USB3 PHY if USB3_0 is used
132 - const: usb2-phy0 # USB2 PHY0 if USBHOST_A port is used
133 - const: usb2-phy1 # USB2 PHY1 if USBOTG_B port is used
152 - const: usb2-phy0 # USB2 PHY0 if USBHOST_A port is used
153 - const: usb2-phy1 # USB2 PHY1 if USBOTG_B port is used
154 - const: usb2-phy2 # USB2 PHY2 if USBOTG_C port is used
168 - const: usb2-phy1 # USB2 PHY1 if USBOTG_B port is used
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/Documentation/devicetree/bindings/display/panel/
Dronbo,rb070d30.yaml20 description: GPIO used for the power pin
24 description: GPIO used for the reset pin
28 description: GPIO used for the shlr pin (horizontal flip)
32 description: GPIO used for the updn pin (vertical flip)
39 description: Backlight used by the panel
/Documentation/arch/sh/
Dregister-banks.rst19 can still be used to reference the banked registers (as r0_bank ... r7_bank)
23 be used rather effectively as scratch registers by the kernel.
27 - r0_bank, r1_bank (referenced as k0 and k1, used for scratch
30 - r2_bank (used to track the EXPEVT/INTEVT code)
32 - Used by do_IRQ() and friends for doing irq mapping based off
38 interrupt priority level (used by local_irq_enable())
/Documentation/devicetree/bindings/mailbox/
Dnvidia,tegra186-hsp.yaml14 The HSP modules are used for the processors to share resources and
26 second cell is used to identify the mailbox that the client is going
32 mailbox to be used (based on the data size). If no flag is
33 specified then, 32-bit shared mailbox is used.
35 Defines the type of the mailbox to be used. This field should be
44 will be used. Valid flags are:
47 will be used as a producer (i.e. used to send data). If
56 The following file contains definitions that can be used to
/Documentation/sound/cards/
Daudigy-mixer.rst27 Explanation of used abbreviations:
35 (this standard is used for connecting standalone D/A and A/D converters)
37 low frequency effects (used as subwoofer signal)
49 This control is used to attenuate samples from left and right front PCM FX-bus
55 This control is used to attenuate samples from left and right surround PCM FX-bus
62 This control is used to attenuate samples from left and right side PCM FX-bus
68 This control is used to attenuate samples from center PCM FX-bus accumulator.
74 This control is used to attenuate sample for LFE PCM FX-bus accumulator.
80 This control is used to attenuate samples from left and right PCM FX-bus
86 This control is used to attenuate samples from left and right PCM FX-bus
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/Documentation/devicetree/bindings/interrupt-controller/
Dsnps,dw-apb-ictl.txt4 dw_apb_ictl. The IP is used as secondary interrupt controller in some SoCs with
5 APB bus, e.g. Marvell Armada 1500. It can also be used as primary interrupt
15 Additional required property when it's used as secondary interrupt controller:
27 /* dw_apb_ictl is used as secondary interrupt controller */
37 /* dw_apb_ictl is used as primary interrupt controller */
/Documentation/arch/arm64/
Dacpi_object_usage.rst8 If a section number is used, it refers to a section number in the ACPI
9 specification where the object is defined. If "Signature Reserved" is used,
41 This table describes a non-maskable event, that is used by the platform
96 License has changed and should be usable. Optional if used instead
131 Optional, not currently supported, but could be used on ARM if and
166 provided, the Global Lock will NOT be used since it is not part of
181 used, not FIRMWARE_CTRL.
183 If PSCI is used (as is recommended), make sure that ARM_BOOT_ARCH is
187 For the DSDT that is also required, the X_DSDT field is to be used,
210 used on arm64.
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/Documentation/scsi/
Dst.rst34 continued using existing format, and the default format is used if
39 used only in variable block mode (I don't know if this is sensible
51 the configuration of mode 0 is used to provide a starting point for
60 If more than one mode is used, all modes should contain definitions
99 consecutive files must be written fast. The MTWEOFI operation can be used to
102 operation is MTWEOFI, close() does not write a filemark. This can be used if
111 4. If the open option O_NONBLOCK is used, open succeeds even if the
112 drive is not ready. If O_NONBLOCK is not used, the driver waits for
124 each drive are used.
134 backward compatible with the numbering used when the minor number was
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/Documentation/devicetree/bindings/mtd/partitions/
Dbrcm,bcm947xx-cfe-partitions.yaml10 Broadcom is one of hardware manufacturers providing SoCs (BCM47xx) used in
13 and/or meanings can also vary so fixed partitioning can't be used.
28 5) Backup TRX firmware used after failed upgrade
32 same TRX format with the same header. To distinguish currently used firmware a
33 CFE's environment variable "bootpartition" is used.
/Documentation/rust/
Dquick-start.rst11 approach is that, typically, the distribution will match the LLVM used by Rust
96 can be used::
100 This triggers the same logic used by Kconfig to determine whether
110 If ``rustup`` is being used, enter the kernel build directory (or use
133 If ``rustup`` is being used, run::
140 Otherwise, if a standalone installer is used, the Rust source tree may be
156 ``libclang`` (part of LLVM) is used by ``bindgen`` to understand the C code
190 the one found should be used), the process can be tweaked, e.g. by using the
209 The ``rustfmt`` tool is used to automatically format all the Rust kernel code,
213 If ``rustup`` is being used, its ``default`` profile already installs the tool,
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