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/Documentation/devicetree/bindings/sound/
Drt5659.txt25 1: using IN2N pin as dmic1 data pin
26 2: using GPIO5 pin as dmic1 data pin
27 3: using GPIO9 pin as dmic1 data pin
28 4: using GPIO11 pin as dmic1 data pin
32 1: using IN2P pin as dmic2 data pin
33 2: using GPIO6 pin as dmic2 data pin
34 3: using GPIO10 pin as dmic2 data pin
35 4: using GPIO12 pin as dmic2 data pin
39 1: using JD3 as JD source
Drt5645.txt28 1: using IN2P pin as dmic1 data pin
29 2: using GPIO6 pin as dmic1 data pin
30 3: using GPIO10 pin as dmic1 data pin
31 4: using GPIO12 pin as dmic1 data pin
35 1: using IN2N pin as dmic2 data pin
36 2: using GPIO5 pin as dmic2 data pin
37 3: using GPIO11 pin as dmic2 data pin
Drt5668.txt17 1: using GPIO2 pin as dmic1 data pin
18 2: using GPIO5 pin as dmic1 data pin
21 0: using GPIO1 pin as dmic1 clock pin
22 1: using GPIO3 pin as dmic1 clock pin
26 1: using JD1 as JD source
Drt5665.txt23 1: using GPIO4 pin as dmic1 data pin
24 2: using IN2N pin as dmic2 data pin
28 1: using GPIO5 pin as dmic2 data pin
29 2: using IN2P pin as dmic2 data pin
33 1: using JD1 as JD source
Drt5682.txt17 1: using GPIO2 pin as dmic1 data pin
18 2: using GPIO5 pin as dmic1 data pin
21 0: using GPIO1 pin as dmic1 clock pin
22 1: using GPIO3 pin as dmic1 clock pin
26 1: using JD1 as JD source
/Documentation/admin-guide/nfs/
Dnfsroot.rst50 This can be established using the following kernel command line parameters:
97 this means that the kernel tries to configure everything using
107 Default: Determined using autoconfiguration.
121 Default: Determined using autoconfiguration.
125 Default: Determined using autoconfiguration.
131 Default: Determined using autoconfiguration.
146 Otherwise the device is determined using
149 and using the device that received the first reply.
154 requests are sent using all protocols, and the first one
180 Default: None if not using autoconfiguration; determined
[all …]
/Documentation/driver-api/dmaengine/
Ddmatest.rst7 This small document introduces how to test DMA drivers using dmatest module.
72 Once started a message like " dmatest: Added 1 threads using dma0chan0" is
155 Channels are registered using the "channel" parameter. Channels can be requested by their
161 dmatest: Added 1 threads using dma0chan2
169 dmatest: Added 1 threads using dma0chan1
171 dmatest: Added 1 threads using dma0chan2
181 dmatest: Added 1 threads using dma0chan0
182 dmatest: Added 1 threads using dma0chan3
183 dmatest: Added 1 threads using dma0chan4
184 dmatest: Added 1 threads using dma0chan5
[all …]
/Documentation/userspace-api/media/v4l/
Dselection-api-configuration.rst19 control the rounding behaviour using
50 coordinates are obtained using ``V4L2_SEL_TGT_COMPOSE_BOUNDS``. All
62 control rounding behaviour using
65 For capture devices the default composing rectangle is queried using
70 ``V4L2_SEL_TGT_COMPOSE_PADDED``. It contains all pixels defined using
90 cropping coordinates are obtained using ``V4L2_SEL_TGT_CROP_BOUNDS``.
93 specified using :ref:`VIDIOC_S_FMT <VIDIOC_G_FMT>` ioctl.
103 For output devices the default cropping rectangle is queried using
134 and the height of rectangles obtained using ``V4L2_SEL_TGT_CROP`` and
136 scaling is applied. The application can compute the scaling ratios using
Ddev-event.rst16 subscribed using the
19 using the :ref:`VIDIOC_DQEVENT` ioctl. Events may be
20 unsubscribed using VIDIOC_UNSUBSCRIBE_EVENT ioctl. The special event
28 The information on dequeueable events is obtained by using select or
/Documentation/driver-api/gpio/
Ddrivers-on-gpio.rst2 Subsystem drivers using GPIO
7 drivers can quite easily interconnect with other kernel subsystems using
25 up to three buttons by simply using GPIOs and no mouse port. You can cut the
54 of wires, at least SCK and optionally MISO, MOSI and chip select lines) using
58 to this SPI by using the mmc_spi host from the MMC/SD card subsystem.
60 - w1-gpio: drivers/w1/masters/w1-gpio.c is used to drive a one-wire bus using
89 Consumer Electronics Control bus using only GPIO. It is used to communicate
94 AC charger or more complex tasks such as indicating charging status using
101 to emulate MCTRL (modem control) signals CTS/RTS by using two GPIO lines. The
107 Needless to say, just using the appropriate kernel drivers will simplify and
Dusing-gpio.rst2 Using GPIO Lines in Linux
16 using appropriate kernel drivers is paramount. Submit your code for inclusion
33 from userspace will likely be a good fit for using GPIO lines from userspace as
38 productify the prototype: rewrite it using proper kernel drivers. Do not under
39 any circumstances deploy any uniform products using GPIO from userspace.
/Documentation/core-api/
Dxarray.rst22 clustered; hashing the object and using the hash as the index will not
35 You must first convert it into an entry using xa_mk_value().
66 You can then set entries using xa_store() and get entries
67 using xa_load(). xa_store will overwrite any entry with the
74 You can conditionally replace an entry at an index by using
105 Using xa_insert() on a reserved entry will fail.
113 entries in the XArray using the xa_for_each() iterator.
120 iterate over marked entries by using the xa_for_each_marked() iterator.
122 You can enquire whether a mark is set on an entry by using
124 by using xa_set_mark() and remove the mark from an entry by calling
[all …]
/Documentation/networking/
Dbatman-adv.rst9 using UDP packets and sets routing tables, batman-advanced operates on ISO/OSI
30 batman-adv can operate. The batman-adv soft-interface can be created using the
40 using/broadcasting on this/these interface(s).
46 The same can also be done using the batctl interface subcommand::
57 which can be modified using batctl. Detailed information about this can be found
86 you. Basically, one "hands over" the data by using the batman interface and
90 IP address which can be either statically configured or dynamically (by using
111 a number of ways. Try using the commands: ``dmesg``, ``logread``, or looking in
123 Those additional debug messages can be accessed using the perf infrastructure::
/Documentation/PCI/endpoint/
Dpci-endpoint.rst6 endpoint controller driver, endpoint function driver, and using configfs
63 devm_pci_epc_create() or pci_epc_create() using devm_pci_epc_destroy() or
97 using this API.
118 free the memory space allocated using pci_epc_mem_alloc_addr().
125 using these APIs.
134 Release the reference to the PCI endpoint controller obtained using
178 The PCI Function driver can then register the PCI EPF driver by using
183 The PCI Function driver can unregister the PCI EPF driver by using
188 The PCI Function driver can allocate space for a particular BAR using
194 (using pci_epf_alloc_space) by invoking pci_epf_free_space().
[all …]
/Documentation/driver-api/usb/
Dtypec_bus.rst8 Alternate modes require communication with the partner using Vendor Defined
14 modes by using the SVID and the mode number.
25 driver will happen using the same API.
49 the SVID specific commands to each other using :c:func:`typec_altmode_vdm()`.
51 If the communication with the partner using the SVID specific commands results
53 needs to notify the bus using :c:func:`typec_altmode_notify()`. The driver
55 parameter. The bus driver will then configure the mux behind the connector using
88 plug alternate modes using :c:func:`typec_altmode_get_plug()`, and take over
/Documentation/bpf/
Dbpf_lsm.rst10 policies using eBPF.
57 The eBPF programs can be declared using the``BPF_PROG``
90 the BPF verifier to update the offsets for the access at runtime using the
107 This can be simplified by using a skeleton header generated by ``bpftool``:
113 and the program can be loaded by including ``my_prog.skel.h`` and using
119 The LSM allows attachment of eBPF programs as LSM hooks using :manpage:`bpf(2)`
121 using the libbpf helper ``bpf_program__attach_lsm``.
124 link returned by ``bpf_program__attach_lsm`` using ``bpf_link__destroy``.
Ds390.rst77 The disk image can be prepared using a loopback mount and debootstrap::
117 simplify debugging, can be done using the following commands::
146 When using this on a real IBM Z, ``-enable-kvm`` may be added for better
148 setup must be finalized using the following command::
160 After that, the test suite can be run using the following commands::
173 It is possible to debug the s390 kernel using QEMU GDB stub, which is activated
181 GDB can then be attached using the following command::
189 install additional packages, it can be configured using::
205 - `Using GDB with QEMU <https://wiki.osdev.org/Kernel_Debugging#Use_GDB_with_QEMU>`_
/Documentation/admin-guide/gpio/
Dgpio-aggregator.rst10 Aggregating GPIOs using Sysfs
13 GPIO controllers are exported to userspace using /dev/gpiochip* character
20 using standard UNIX file ownership and permissions. Furthermore, this
33 aggregate to the "new_device" file, using the format
83 Example: If "door" is a GPIO-operated device described in DT, using its own
97 2. Binding manually using "driver_override":
/Documentation/misc-devices/
Dxilinx_sdfec.rst128 Determine the configuration of the SD-FEC core by using the ioctl
136 Setting the order is done by using the ioctl :c:macro:`XSDFEC_SET_ORDER`
151 - Add the LPDC Code Parameters using the ioctl :c:macro:`XSDFEC_ADD_LDPC_CODE_PARAMS`
164 Configuring the Turbo decode parameters is done by using the ioctl :c:macro:`XSDFEC_SET_TURBO` usin…
174 Enabling or disabling interrupts is done by using the ioctl :c:macro:`XSDFEC_SET_IRQ`. The members …
184 Bypassing the SD-FEC is done by using the ioctl :c:macro:`XSDFEC_SET_BYPASS`
193 Start the SD-FEC core by using the ioctl :c:macro:`XSDFEC_START_DEV`
198 Get the SD-FEC status of the device by using the ioctl :c:macro:`XSDFEC_GET_STATUS`, which will fil…
207 - Get stats by using the ioctl :c:macro:`XSDFEC_GET_STATS`
210 - Get state by using the ioctl :c:macro:`XSDFEC_GET_STATUS`
[all …]
/Documentation/dev-tools/
Dkgdb.rst2 Using kgdb, kdb and the kernel debugger internals
33 Two machines are required for using kgdb. One of these machines is a
71 If the architecture that you are using supports the kernel option
75 supports it for the architecture you are using, you can use hardware
106 ``CONFIG_KGDB_SERIAL_CONSOLE`` interface if you plan on using kdb on a
129 using kdb and kgdb as well as providing some examples of the
142 console as your primary console as well as using it to perform kernel
174 depending on if you are using kdb and/or kgdb, in one of the following
176 optional configurations together. Using kms + only gdb is generally not
179 Using loadable module or built-in
[all …]
/Documentation/security/keys/
Decryptfs.rst6 file using a randomly generated File Encryption Key (FEK).
11 using a key, the FEKEK, derived from a user prompted passphrase; in the latter
33 The eCryptfs filesystem may really benefit from using encrypted keys in that the
56 'ecryptfs' and save it using a previously loaded user key "test"::
69 Mount an eCryptfs filesystem using the created encrypted key "1000100010001000"
/Documentation/hid/
Dhidraw.rst19 communication with these non-conformant devices is impossible using hiddev.
44 devices, the reports read using read() are the reports sent from the device
47 the O_NONBLOCK flag to open(), or by setting the O_NONBLOCK flag using
60 using a SET_REPORT transfer.
78 This ioctl returns the device's report descriptor using a
114 specification, feature reports are always sent using the control endpoint.
123 This ioctl will request a feature report from the device using the control
133 purpose, and can serve as a starting point for developing applications using
/Documentation/admin-guide/blockdev/
Dramdisk.rst2 Using the RAM disk block device with Linux
9 3) Using "rdev"
22 The RAM disk dynamically grows as more space is required. It does this by using
23 RAM from the buffer cache. The driver marks the buffers it is using as dirty
62 3) Using "rdev"
68 Instead of using rdev, just place the boot device information on the
93 of RAM. If using a spare disk partition instead of /dev/ram0, then this
135 users may wish to combine steps (d) and (f) by using a pipe.
/Documentation/devicetree/bindings/net/
Dmarvell-pxa168.txt11 - #address-cells: must be 1 when using sub-nodes.
12 - #size-cells: must be 0 when using sub-nodes.
15 The MAC address will be determined using the optional properties
/Documentation/devicetree/bindings/input/
Dda9062-onkey.txt18 - dlg,disable-key-power : Disable power-down using a long key-press. If this
20 press when triggered using a long press of the OnKey.
40 Example: DA9061 using a fall-back compatible for the DA9062 onkey driver

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