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/Linux-v5.10/Documentation/hwmon/
Dina2xx.rst10 Addresses: I2C 0x40 - 0x4f
20 Addresses: I2C 0x40 - 0x4f
30 Addresses: I2C 0x40 - 0x4f
40 Addresses: I2C 0x40 - 0x4f
50 Addresses: I2C 0x40 - 0x4f
59 -----------
61 The INA219 is a high-side current shunt and power monitor with an I2C
65 The INA220 is a high or low side current shunt and power monitor with an I2C
71 INA230 and INA231 are high or low side current shunt and power monitors
75 The shunt value in micro-ohms can be set via platform data or device tree at
[all …]
Dmax16065.rst11 Addresses scanned: -
15 http://datasheets.maxim-ic.com/en/ds/MAX16065-MAX16066.pdf
21 Addresses scanned: -
25 http://datasheets.maxim-ic.com/en/ds/MAX16067.pdf
31 Addresses scanned: -
35 http://datasheets.maxim-ic.com/en/ds/MAX16068.pdf
41 Addresses scanned: -
45 http://datasheets.maxim-ic.com/en/ds/MAX16070-MAX16071.pdf
47 Author: Guenter Roeck <linux@roeck-us.net>
51 -----------
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Dina3221.rst10 Addresses: I2C 0x40 - 0x43
19 -----------
21 The Texas Instruments INA3221 monitors voltage, current, and power on the high
22 side of up to three D.C. power supplies. The INA3221 monitors both shunt drop
24 and power are calculated host-side from these.
27 -------------
68 * BC: bus-voltage conversion time in millisecond
69 * SC: shunt-voltage conversion time in millisecond
71 Affects both Bus- and Shunt-voltage conversion time.
/Linux-v5.10/Documentation/admin-guide/media/
Dsi476x.rst1 .. SPDX-License-Identifier: GPL-2.0
12 -------------------
14 - According to the SiLabs' datasheet it is possible to update the
15 firmware of the radio chip in the run-time, thus bringing it to the
23 -------------------------------
31 * /sys/kernel/debug/<device-name>/acf
52 0x05 smute 0 - Audio is not soft muted
53 1 - Audio is soft muted
60 0x10 pilot 0 - Stereo pilot is not present
61 1 - Stereo pilot is present
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/Linux-v5.10/net/ipv4/
DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
10 intend to participate in the MBONE, a high bandwidth network on top
40 so-called IP spoofing, however it can pose problems if you use
42 than packets from that host to you) or if you operate a non-routing
52 <file:Documentation/networking/ip-sysctl.rst>.
71 address into account. Furthermore, the TOS (Type-Of-Service) field
89 equal "cost" and chooses one of them in a non-deterministic fashion
132 <file:Documentation/admin-guide/nfs/nfsroot.rst> for details.
147 Read <file:Documentation/admin-guide/nfs/nfsroot.rst> for details.
160 <file:Documentation/admin-guide/nfs/nfsroot.rst> for details.
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/Linux-v5.10/drivers/usb/gadget/udc/
DKconfig1 # SPDX-License-Identifier: GPL-2.0
7 # NOTE: Gadget support ** DOES NOT ** depend on host-side CONFIG_USB !!
9 # - Host systems (like PCs) need CONFIG_USB (with "A" jacks).
10 # - Peripherals (like PDAs) need CONFIG_USB_GADGET (with "B" jacks).
11 # - Some systems have both kinds of controllers.
13 # With help from a special transceiver and a "Mini-AB" jack, systems with
14 # both kinds of controller can also support "USB On-the-Go" (CONFIG_USB_OTG).
22 # - integrated/SOC controllers first
23 # - licensed IP used in both SOC and discrete versions
24 # - discrete ones (including all PCI-only controllers)
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/Linux-v5.10/include/sound/sof/
Dcontrol.h1 /* SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) */
19 /* channel positions - uses same values as ALSA */
30 SOF_CHMAP_SL, /**< side left */
31 SOF_CHMAP_SR, /**< side right */
39 SOF_CHMAP_FLH, /**< front left high */
40 SOF_CHMAP_FCH, /**< front centre high */
41 SOF_CHMAP_FRH, /**< front right high */
51 SOF_CHMAP_TSL, /**< top side left */
52 SOF_CHMAP_TSR, /**< top side right */
63 /* per channel data - uses struct sof_ipc_ctrl_value_chan */
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/Linux-v5.10/drivers/gpio/
Dgpio-mc33880.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * MC33880 high-side/low-side switch GPIO driver
8 * Freescale MC33880 high-side/low-side switch
45 return spi_write(mc->spi, &mc->port_config, sizeof(mc->port_config)); in mc33880_write_config()
52 mc->port_config |= 1 << offset; in __mc33880_set()
54 mc->port_config &= ~(1 << offset); in __mc33880_set()
64 mutex_lock(&mc->lock); in mc33880_set()
68 mutex_unlock(&mc->lock); in mc33880_set()
77 pdata = dev_get_platdata(&spi->dev); in mc33880_probe()
78 if (!pdata || !pdata->base) { in mc33880_probe()
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/Linux-v5.10/include/linux/dma/
Dk3-psil.h1 /* SPDX-License-Identifier: GPL-2.0 */
3 * Copyright (C) 2019 Texas Instruments Incorporated - https://www.ti.com
16 * enum udma_tp_level - Channel Throughput Levels
18 * @UDMA_TP_HIGH: High Throughput channel
19 * @UDMA_TP_ULTRAHIGH: Ultra High Throughput channel
29 * enum psil_endpoint_type - PSI-L Endpoint type
43 * struct psil_endpoint_config - PSI-L Endpoint configuration
44 * @ep_type: PSI-L endpoint type
51 * @pdma_acc32: ACC32 must be enabled on the PDMA side
52 * @pdma_burst: BURST must be enabled on the PDMA side
/Linux-v5.10/drivers/usb/gadget/function/
Du_ether.h1 /* SPDX-License-Identifier: GPL-2.0+ */
3 * u_ether.h -- interface to USB gadget "ethernet link" utilities
5 * Copyright (C) 2003-2005,2008 David Brownell
6 * Copyright (C) 2003-2004 Robert Schwebel, Benedikt Spranger
29 MODULE_PARM_DESC(qmult, "queue length multiplier at high/super speed");\
42 * This represents the USB side of an "ethernet" link, managed by a USB
58 /* endpoints handle full and/or high speeds */
95 /* gether_setup - initialize one ethernet-over-usb link
98 * host side of the link is recorded
121 * gether_register_netdev - register the net device
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/Linux-v5.10/Documentation/ABI/stable/
Dsysfs-driver-aspeed-vuart1 What: /sys/bus/platform/drivers/aspeed-vuart/*/lpc_address
4 Description: Configures which IO port the host side of the UART
5 will appear on the host <-> BMC LPC bus.
9 What: /sys/bus/platform/drivers/aspeed-vuart/*/sirq
12 Description: Configures which interrupt number the host side of
13 the UART will appear on the host <-> BMC LPC bus.
17 What: /sys/bus/platform/drivers/aspeed-vuart/*/sirq_polarity
22 Set to 0 for active-low or 1 for active-high.
/Linux-v5.10/Documentation/devicetree/bindings/arm/
Datmel-sysregs.txt4 - compatible: Should be "atmel,sama5d2-chipid"
5 - reg : Should contain registers location and length
8 - compatible: Should be "atmel,at91sam9260-pit"
9 - reg: Should contain registers location and length
10 - interrupts: Should contain interrupt for the PIT which is the IRQ line
14 - compatible: Should be "microchip,sam9x60-pit64b"
15 - reg: Should contain registers location and length
16 - interrupts: Should contain interrupt for PIT64B timer
17 - clocks: Should contain the available clock sources for PIT64B timer.
20 - compatible: Should be "atmel,at91rm9200-st", "syscon", "simple-mfd"
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/Linux-v5.10/Documentation/driver-api/usb/
Dgadget.rst11 This document presents a Linux-USB "Gadget" kernel mode API, for use
17 - Supports USB 2.0, for high speed devices which can stream data at
20 - Handles devices with dozens of endpoints just as well as ones with
21 just two fixed-function ones. Gadget drivers can be written so
24 - Flexible enough to expose more complex USB device capabilities such
28 - USB "On-The-Go" (OTG) support, in conjunction with updates to the
29 Linux-USB host side.
31 - Sharing data structures and API models with the Linux-USB host side
32 API. This helps the OTG support, and looks forward to more-symmetric
34 side drivers).
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/Linux-v5.10/kernel/
Dcontext_tracking.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * Context tracking: Probe on high level context boundaries such as kernel
13 * Many thanks to Gilad Ben-Yossef, Paul McKenney, Ingo Molnar, Andrew Morton,
54 * context_tracking_enter - Inform the context tracking that the CPU is going
59 * instructions to execute won't use any RCU read side critical section
65 WARN_ON_ONCE(!current->mm); in __context_tracking_enter()
75 * any RCU read-side critical section until the next call to in __context_tracking_enter()
135 * context_tracking_exit - Inform the context tracking that the CPU is
139 * guest space before any use of RCU read side critical section. This
140 * potentially include any high level kernel code like syscalls, exceptions,
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/Linux-v5.10/Documentation/sound/designs/
Dchannel-mapping-api.rst2 ALSA PCM channel-mapping API
38 the kernel/user-space ABI perspective. It uses only the existing
57 ---
61 ``type data-bytes ch0 ch1 ch2...``
71 type is where pair-wise channels are swappable. For example, when you
88 /* this follows the alsa-lib mixer channel value + 3 */
95 SNDRV_CHMAP_SL, /* side left */
96 SNDRV_CHMAP_SR, /* side right */
105 SNDRV_CHMAP_FLH, /* front left high */
106 SNDRV_CHMAP_FCH, /* front center high */
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/Linux-v5.10/Documentation/virt/
Dguest-halt-polling.rst9 This provides the following benefits to host side polling:
15 2) The VM-exit cost can be avoided.
17 The downside of guest side polling is that polling is performed
25 ("per-cpu guest_halt_poll_ns"), which is adjusted by the algorithm
42 Division factor used to shrink per-cpu guest_halt_poll_ns when
49 Multiplication factor used to grow per-cpu guest_halt_poll_ns
50 when event occurs after per-cpu guest_halt_poll_ns
57 The per-cpu guest_halt_poll_ns eventually reaches zero
59 per-cpu guest_halt_poll_ns when growing. This can
70 to avoid it (per-cpu guest_halt_poll_ns will remain
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/Linux-v5.10/Documentation/admin-guide/hw-vuln/
Dspectre.rst1 .. SPDX-License-Identifier: GPL-2.0
3 Spectre Side Channels
6 Spectre is a class of side channel attacks that exploit branch prediction
8 bypassing access controls. Speculative execution side channel exploits
14 -------------------
16 Speculative execution side channel methods affect a wide range of modern
17 high performance processors, since most modern high speed processors
22 - Intel Core, Atom, Pentium, and Xeon processors
24 - AMD Phenom, EPYC, and Zen processors
26 - IBM POWER and zSeries processors
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/Linux-v5.10/Documentation/devicetree/bindings/media/
Dvideo-interfaces.txt4 ---------------
21 #address-cells = <1>;
22 #size-cells = <0>;
37 a common scheme using '#address-cells', '#size-cells' and 'reg' properties is
41 specify #address-cells, #size-cells properties independently for the 'port'
44 Two 'endpoint' nodes are linked with each other through their 'remote-endpoint'
53 a device is partitioned into multiple data busses, e.g. 16-bit input port
54 divided into two separate ITU-R BT.656 8-bit busses. In such case bus-width
55 and data-shift properties can be used to assign physical data lines to each
59 --------------------------------
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/Linux-v5.10/Documentation/driver-api/
Di2c.rst5 the "Inter-IC" bus, a simple bus protocol which is widely used where low
7 some vendors use another name (such as "Two-Wire Interface", TWI) for
11 there's a high speed extension (3.4 MHz) that's not yet found wide use.
12 I2C is a multi-master bus; open drain signaling is used to arbitrate
16 The Linux I2C programming interfaces support the master side of bus
17 interactions and the slave side. The programming interface is
38 .. kernel-doc:: include/linux/i2c.h
41 .. kernel-doc:: drivers/i2c/i2c-boardinfo.c
44 .. kernel-doc:: drivers/i2c/i2c-core-base.c
47 .. kernel-doc:: drivers/i2c/i2c-core-smbus.c
/Linux-v5.10/Documentation/userspace-api/media/drivers/
Dmax2175.rst1 .. SPDX-License-Identifier: GPL-2.0
6 The MAX2175 driver implements the following driver-specific controls:
9 -------------------------------
12 Refer to Documentation/driver-api/media/v4l2-controls.rst for more details.
14 .. flat-table::
15 :header-rows: 0
16 :stub-columns: 0
19 * - ``(0)``
20 - I2S output is disabled.
21 * - ``(1)``
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/Linux-v5.10/arch/x86/include/asm/
Dpgtable-3level.h1 /* SPDX-License-Identifier: GPL-2.0 */
8 * Intel Physical Address Extension (PAE) Mode - three-level page
28 * value and then use set_pte to update it. -ben
32 ptep->pte_high = pte.pte_high; in native_set_pte()
34 ptep->pte_low = pte.pte_low; in native_set_pte()
39 * pte_offset_map_lock() on 32-bit PAE kernels was reading the pmd_t with
43 * vs page faults vs MADV_DONTNEED. On the page fault side
45 * pmd_t with a "*pmdp" on the mincore side, a SMP race can happen
46 * because GCC will not read the 64-bit value of the pmd atomically.
67 * In some cases the high and low part of the pmdval returned may not be
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/Linux-v5.10/include/linux/mfd/
Dsi476x-reports.h1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * include/media/si476x-platform.h -- Definitions of the data formats
15 * struct si476x_rsq_status - structure containing received signal
17 * @multhint: Multipath Detect High.
18 * true - Indicatedes that the value is below
20 * false - Indicatedes that the value is above
23 * true - Indicatedes that the value is below
25 * false - Indicatedes that the value is above
27 * @snrhint: SNR Detect High.
28 * true - Indicatedes that the value is below
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/Linux-v5.10/arch/arm/mach-pxa/
Dpalmtreo.c1 // SPDX-License-Identifier: GPL-2.0-only
24 #include <linux/w1-gpio.h>
26 #include <asm/mach-types.h>
31 #include "pxa27x-udc.h"
34 #include <linux/platform_data/mmc-pxamci.h>
35 #include <linux/platform_data/video-pxafb.h>
36 #include <linux/platform_data/irda-pxaficp.h>
37 #include <linux/platform_data/keypad-pxa27x.h>
39 #include <linux/platform_data/usb-ohci-pxa27x.h>
40 #include <mach/pxa2xx-regs.h>
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/Linux-v5.10/Documentation/networking/device_drivers/ethernet/microsoft/
Dnetvsc.rst1 .. SPDX-License-Identifier: GPL-2.0
4 Hyper-V network driver
17 ----------------
19 Hyper-V host version does. Windows Server 2016 and Azure
23 Receive Side Scaling
24 --------------------
25 Hyper-V supports receive side scaling. For TCP & UDP, packets can
34 On Azure, fragmented UDP packets have high loss rate with L4
41 ethtool -N eth0 rx-flow-hash udp4 sdfn
45 ethtool -N eth0 rx-flow-hash udp4 sd
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/Linux-v5.10/lib/raid6/
Dint.uc1 /* -*- linux-c -*- ------------------------------------------------------- *
3 * Copyright 2002-2004 H. Peter Anvin - All Rights Reserved
8 * Boston MA 02111-1307, USA; either version 2 of the License, or
11 * ----------------------------------------------------------------------- */
16 * $#-way unrolled portable integer math RAID-6 instruction set
45 * IA-64 wants insane amounts of unrolling. On other architectures that
52 * These sub-operations are separate inlines since they can sometimes be
53 * specially optimized using architecture-specific hacks.
69 * The MASK() operation returns 0xFF in any byte for which the high
70 * bit is 1, 0x00 for any byte for which the high bit is 0.
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