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/openbmc/linux/Documentation/devicetree/bindings/i2c/
H A Di2c-arb-gpio-challenge.yaml1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
4 $id: http://devicetree.org/schemas/i2c/i2c-arb-gpio-challenge.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: GPIO-based I2C Arbitration Using a Challenge & Response Mechanism
10 - Doug Anderson <dianders@chromium.org>
11 - Peter Rosin <peda@axentia.se>
18 standard I2C multi-master rules. Using GPIOs is generally useful in the case
30 others can see. These are all active low with pull-ups enabled. We'll
32 * OUR_CLAIM: output from us signaling to other hosts that we want the bus
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/openbmc/u-boot/doc/
H A DREADME.i2c4 While I2C supports multi-master buses this is difficult to get right.
6 Clock-stretching and the arbitrary time that an I2C transaction can take
8 When one or more masters can be reset independently part-way through a
11 U-Boot provides a scheme based on two 'claim' GPIOs, one driven by the
18 Since U-Boot runs on the AP, the terminology used is 'our' claim GPIO,
23 i2c-arb-gpio-challenge for the implementation.
28 - AP_CLAIM: output from AP, signalling to the EC that the AP wants the bus
29 - EC_CLAIM: output from EC, signalling to the AP that the EC wants the bus
38 2. Waits a little bit for the other side to notice (slew time)
41 4. Otherwise, wait for a few milliseconds (retry time) and see if EC_CLAIM is
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/openbmc/linux/Documentation/devicetree/bindings/iio/dac/
H A Dadi,ad5758.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Michael Hennerich <Michael.Hennerich@analog.com>
19 spi-cpha: true
21 adi,dc-dc-mode:
25 Mode of operation of the dc-to-dc converter
32 In this mode, the VDPC+ voltage is user-programmable to a fixed level
37 any one time.
47 adi,range-microvolt:
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/openbmc/u-boot/arch/arm/dts/
H A Drk3399-gru-chromebook.dtsi1 // SPDX-License-Identifier: (GPL-2.0+ OR MIT)
3 * Google Gru-Chromebook shared properties
8 #include "rk3399-gru.dtsi"
11 pp900_ap: pp900-ap {
12 compatible = "regulator-fixed";
13 regulator-name = "pp900_ap";
16 regulator-always-on;
17 regulator-boot-on;
18 regulator-min-microvolt = <900000>;
19 regulator-max-microvolt = <900000>;
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/openbmc/linux/drivers/iio/dac/
H A Dad5758.c1 // SPDX-License-Identifier: GPL-2.0
101 * struct ad5758_state - driver instance specific data
107 * @dc_dc_ilim: variable which stores the dc-to-dc converter current limit
108 * @slew_time: variable which stores the target slew time
135 * 1101: -1 mA to +22 mA current range
160 { AD5758_RANGE_PLUSMINUS_5V, -5000000, 5000000 },
161 { AD5758_RANGE_PLUSMINUS_10V, -10000000, 10000000 }
168 { AD5758_RANGE_PLUSMINUS_20mA, -20000, 20000 },
169 { AD5758_RANGE_PLUSMINUS_24mA, -24000, 24000 },
170 { AD5758_RANGE_MINUS_1mA_PLUS_22mA, -1000, 22000 },
[all …]
/openbmc/linux/arch/arm64/boot/dts/rockchip/
H A Drk3399-gru-chromebook.dtsi1 // SPDX-License-Identifier: (GPL-2.0+ OR MIT)
3 * Google Gru-Chromebook shared properties
8 #include "rk3399-gru.dtsi"
11 pp900_ap: pp900-ap {
12 compatible = "regulator-fixed";
13 regulator-name = "pp900_ap";
16 regulator-always-on;
17 regulator-boot-on;
18 regulator-min-microvolt = <900000>;
19 regulator-max-microvolt = <900000>;
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/openbmc/linux/arch/arm/boot/dts/st/
H A Dstm32mp135f-dk.dts1 // SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
3 * Copyright (C) STMicroelectronics 2021 - All Rights Reserved
7 /dts-v1/;
9 #include <dt-bindings/gpio/gpio.h>
10 #include <dt-bindings/input/input.h>
11 #include <dt-bindings/leds/common.h>
12 #include <dt-bindings/regulator/st,stm32mp13-regulator.h>
15 #include "stm32mp13-pinctrl.dtsi"
18 model = "STMicroelectronics STM32MP135F-DK Discovery Board";
19 compatible = "st,stm32mp135f-dk", "st,stm32mp135";
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/openbmc/linux/arch/arm/boot/dts/microchip/
H A Dat91-sama7g5ek.dts1 // SPDX-License-Identifier: (GPL-2.0+ OR MIT)
3 * at91-sama7g5ek.dts - Device Tree file for SAMA7G5-EK board
11 /dts-v1/;
12 #include "sama7g5-pinfunc.h"
14 #include <dt-bindings/mfd/atmel-flexcom.h>
15 #include <dt-bindings/input/input.h>
16 #include <dt-bindings/pinctrl/at91.h>
17 #include <dt-bindings/sound/microchip,pdmc.h>
20 model = "Microchip SAMA7G5-EK";
25 stdout-path = "serial0:115200n8";
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/openbmc/linux/drivers/cpufreq/
H A Dpmac64-cpufreq.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright (C) 2002 - 2005 Benjamin Herrenschmidt <benh@kernel.crashing.org>
4 * and Markus Demleitner <msdemlei@cl.uni-heidelberg.de>
30 #include <asm/time.h>
48 #define PCR_TARGET_TIME_MASK 0x00006000U /* target time */
73 * the various frequencies, retrieved from the device-tree
117 u32 slew, done = 0; in g5_vdnap_switch_volt() local
120 slew = (speed_mode == CPUFREQ_LOW) ? 1 : 0; in g5_vdnap_switch_volt()
122 args.u[0].p = &slew; in g5_vdnap_switch_volt()
350 int rc = -ENODEV; in g5_neo2_cpufreq_init()
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H A Dmaple-cpufreq.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright (C) 2011 Dmitry Eremin-Solenikov
4 * Copyright (C) 2002 - 2005 Benjamin Herrenschmidt <benh@kernel.crashing.org>
5 * and Markus Demleitner <msdemlei@cl.uni-heidelberg.de>
25 #include <linux/time.h>
42 #define PCR_TARGET_TIME_MASK 0x00006000U /* target time */
67 * the various frequencies, retrieved from the device-tree
164 int rc = -ENODEV; in maple_cpufreq_init()
189 /* Look for the powertune data in the device-tree */ in maple_cpufreq_init()
191 * On Maple this property is provided by PIBS in dual-processor config, in maple_cpufreq_init()
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/openbmc/linux/Documentation/scsi/
H A Daic79xx.rst1 .. SPDX-License-Identifier: GPL-2.0
28 AIC-7901A Single Channel 64-bit PCI-X 133MHz to
30 AIC-7901B Single Channel 64-bit PCI-X 133MHz to
32 AIC-7902A4 Dual Channel 64-bit PCI-X 133MHz to
34 AIC-7902B Dual Channel 64-bit PCI-X 133MHz to
41 Adaptec SCSI Card 39320 Dual Channel 64-bit PCI-X 133MHz to 7902A4/7902B
43 68-pin, two internal 68-pin)
44 Adaptec SCSI Card 39320A Dual Channel 64-bit PCI-X 133MHz to 7902B
46 68-pin, two internal 68-pin)
47 Adaptec SCSI Card 39320D Dual Channel 64-bit PCI-X 133MHz to 7902A4
[all …]
/openbmc/linux/arch/arm/boot/dts/nvidia/
H A Dtegra30-asus-nexus7-grouper-common.dtsi1 // SPDX-License-Identifier: GPL-2.0
3 #include <dt-bindings/input/gpio-keys.h>
4 #include <dt-bindings/input/input.h>
5 #include <dt-bindings/power/summit,smb347-charger.h>
6 #include <dt-bindings/thermal/thermal.h>
9 #include "tegra30-cpu-opp.dtsi"
10 #include "tegra30-cpu-opp-microvolt.dtsi"
11 #include "tegra30-asus-lvds-display.dtsi"
27 * pre-existing /chosen node to be available to insert the
33 trusted-foundations {
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H A Dtegra20-asus-tf101.dts1 // SPDX-License-Identifier: GPL-2.0
2 /dts-v1/;
4 #include <dt-bindings/input/atmel-maxtouch.h>
5 #include <dt-bindings/input/gpio-keys.h>
6 #include <dt-bindings/input/input.h>
7 #include <dt-bindings/thermal/thermal.h>
10 #include "tegra20-cpu-opp.dtsi"
11 #include "tegra20-cpu-opp-microvolt.dtsi"
16 chassis-type = "convertible";
33 * pre-existing /chosen node to be available to insert the
[all …]
H A Dtegra30-asus-transformer-common.dtsi1 // SPDX-License-Identifier: GPL-2.0
3 #include <dt-bindings/input/gpio-keys.h>
4 #include <dt-bindings/input/input.h>
5 #include <dt-bindings/thermal/thermal.h>
8 #include "tegra30-cpu-opp.dtsi"
9 #include "tegra30-cpu-opp-microvolt.dtsi"
12 chassis-type = "convertible";
31 * pre-existing /chosen node to be available to insert the
37 trusted-foundations {
38 compatible = "tlm,trusted-foundations";
[all …]
H A Dtegra20-acer-a500-picasso.dts1 // SPDX-License-Identifier: GPL-2.0
2 /dts-v1/;
4 #include <dt-bindings/input/atmel-maxtouch.h>
5 #include <dt-bindings/input/gpio-keys.h>
6 #include <dt-bindings/input/input.h>
7 #include <dt-bindings/thermal/thermal.h>
10 #include "tegra20-cpu-opp.dtsi"
11 #include "tegra20-cpu-opp-microvolt.dtsi"
32 * pre-existing /chosen node to be available to insert the
41 reserved-memory {
[all …]
H A Dtegra30-pegatron-chagall.dts1 // SPDX-License-Identifier: GPL-2.0
2 /dts-v1/;
4 #include <dt-bindings/input/gpio-keys.h>
5 #include <dt-bindings/input/input.h>
6 #include <dt-bindings/thermal/thermal.h>
9 #include "tegra30-cpu-opp.dtsi"
10 #include "tegra30-cpu-opp-microvolt.dtsi"
11 #include "tegra30-asus-lvds-display.dtsi"
16 chassis-type = "tablet";
35 * pre-existing /chosen node to be available to insert the
[all …]
/openbmc/linux/sound/soc/codecs/
H A Dmax98388.c1 // SPDX-License-Identifier: GPL-2.0
76 struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm); in max98388_dac_event()
81 regmap_write(max98388->regmap, in max98388_dac_event()
86 regmap_write(max98388->regmap, in max98388_dac_event()
89 max98388->tdm_mode = false; in max98388_dac_event()
132 static DECLARE_TLV_DB_SCALE(max98388_digital_tlv, -6350, 50, 1);
133 static DECLARE_TLV_DB_SCALE(max98388_amp_gain_tlv, -300, 300, 0);
136 "0dBFS", "-1dBFS", "-2dBFS", "-3dBFS", "-4dBFS", "-5dBFS",
137 "-6dBFS", "-7dBFS", "-8dBFS", "-9dBFS", "-10dBFS", "-11dBFS",
138 "-12dBFS", "-13dBFS", "-14dBFS", "-15dBFS"
[all …]
/openbmc/linux/Documentation/virt/kvm/x86/
H A Dtimekeeping.rst1 .. SPDX-License-Identifier: GPL-2.0
4 Timekeeping Virtualization for X86-Based Architectures
23 time introduces a new set of challenges because it introduces a multiplexed
24 division of time beyond the control of the guest CPU.
32 information relevant to KVM and hardware-based virtualization.
41 2.1. i8254 - PIT
42 ----------------
46 channels which can be programmed to deliver periodic or one-shot interrupts.
53 The PIT uses I/O ports 0x40 - 0x43. Access to the 16-bit counters is done
59 -------------- ----------------
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/openbmc/linux/arch/arm/mach-omap2/
H A Dvc.c1 // SPDX-License-Identifier: GPL-2.0-only
19 #include "prm-regbits-34xx.h"
20 #include "prm-regbits-44xx.h"
52 * struct omap_vc_channel_cfg - describe the cfg_channel bitfield
101 * omap_vc_config_channel - configure VC channel to PMIC mappings
106 * - i2c slave address (SA)
107 * - voltage configuration address (RAV)
108 * - command configuration address (RAC) and enable bit (RACEN)
109 * - command values for ON, ONLP, RET and OFF (CMD)
112 * non-default channel. Starting with OMAP4, there are more than 2
[all …]
/openbmc/linux/drivers/w1/masters/
H A Dds2490.c1 // SPDX-License-Identifier: GPL-2.0-or-later
92 #define ST_SPUA 0x01 /* Strong Pull-up is active */
172 err = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, dev->ep[EP_CONTROL]), in ds_send_control_cmd()
175 dev_err(&dev->udev->dev, in ds_send_control_cmd()
188 err = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, dev->ep[EP_CONTROL]), in ds_send_control_mode()
191 dev_err(&dev->udev->dev, in ds_send_control_mode()
204 err = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, dev->ep[EP_CONTROL]), in ds_send_control()
207 dev_err(&dev->udev->dev, in ds_send_control()
218 struct device *dev = &ds_dev->udev->dev; in ds_dump_status()
222 ds_dev->ep[EP_STATUS], count, count, buf); in ds_dump_status()
[all …]
/openbmc/qemu/qapi/
H A Dmachine.json1 # -*- Mode: Python -*-
5 # See the COPYING file in the top-level directory.
12 { 'include': 'machine-common.json' }
18 # targets. Run "./configure --help" in the project root directory,
19 # and look for the \*-softmmu targets near the "--target-list" option.
21 # time being.
30 # "qemu-system-" prefix to produce the corresponding QEMU
31 # executable name. This is true even for "qemu-system-x86_64".
52 'data': [ 'uninitialized', 'stopped', 'check-stop', 'operating', 'load' ] }
59 # @cpu-state: the virtual CPU's state
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/openbmc/linux/drivers/staging/media/atomisp/include/linux/
H A Datomisp.h1 /* SPDX-License-Identifier: GPL-2.0 */
48 * buffer has a per-frame parameter.
131 /* [gain] The strength of sharpness in pell-mell area. u5_11 */
278 unsigned int gr; /* unsigned <integer_bits>.<16-integer_bits> */
279 unsigned int r; /* unsigned <integer_bits>.<16-integer_bits> */
280 unsigned int b; /* unsigned <integer_bits>.<16-integer_bits> */
281 unsigned int gb; /* unsigned <integer_bits>.<16-integer_bits> */
288 <13-fraction_bits>.<fraction_bits> */
312 /* [gain] The sensitivity of mis-correction. ISP will miss a lot of
426 struct atomisp_aa_config *aa_config; /* Anti-Aliasing */
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/openbmc/linux/Documentation/networking/
H A Drxrpc.rst1 .. SPDX-License-Identifier: GPL-2.0
7 The RxRPC protocol driver provides a reliable two-phase transport on top of UDP
38 RxRPC is a two-layer protocol. There is a session layer which provides
44 +-------------+
46 +-------------+
48 +-------------+
50 +-------------+
52 +-------------+
60 (2) A two-phase protocol. The client transmits a blob (the request) and then
82 to use - currently only PF_INET is supported.
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/openbmc/linux/drivers/scsi/aic7xxx/
H A Daic79xx_osm.c6 * --------------------------------------------------------------------------
7 * Copyright (c) 1994-2000 Justin T. Gibbs.
8 * Copyright (c) 1997-1999 Doug Ledford
9 * Copyright (c) 2000-2003 Adaptec Inc.
23 * 3. Neither the names of the above-listed copyright holders nor the names
76 * To change the default number of tagged transactions allowed per-device,
83 * Twin adapters will use indexes 0-7 for channel 0, and indexes 8-15
103 * attempt to slowly increase the depth over time as the device recovers
110 * (0, 2-11, 13-15), disables tagged queueing for ID 12, and tells the
118 * IDs 2, 5-7, and 9-15.
[all …]
/openbmc/qemu/docs/about/
H A Dremoved-features.rst10 --------------------------------------
12 ``-hdachs`` (removed in 2.12)
15 The geometry defined by ``-hdachs c,h,s,t`` should now be specified via
16 ``-device ide-hd,drive=dr,cyls=c,heads=h,secs=s,bios-chs-trans=t``
17 (together with ``-drive if=none,id=dr,...``).
19 ``-net channel`` (removed in 2.12)
22 This option has been replaced by ``-net user,guestfwd=...``.
24 ``-net dump`` (removed in 2.12)
27 ``-net dump[,vlan=n][,file=filename][,len=maxlen]`` has been replaced by
28 ``-object filter-dump,id=id,netdev=dev[,file=filename][,maxlen=maxlen]``.
[all …]

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