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/openbmc/linux/Documentation/devicetree/bindings/power/reset/
H A Dgpio-restart.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/power/reset/gpio-restart.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: GPIO controlled reset
10 - Sebastian Reichel <sre@kernel.org>
15 This binding supports level and edge triggered reset. At driver load time, the driver will
17 'open-source' is not found, the GPIO line will be driven in the inactive state. Otherwise its
21 is configured as an output, and driven active, triggering a level triggered reset condition.
22 This will also cause an inactive->active edge condition, triggering positive edge triggered
[all …]
/openbmc/linux/Documentation/devicetree/bindings/reset/
H A Dsnps,dw-reset.txt1 Synopsys DesignWare Reset controller
4 Please also refer to reset.txt in this directory for common reset
9 - compatible: should be one of the following.
10 "snps,dw-high-reset" - for active high configuration
11 "snps,dw-low-reset" - for active low configuration
13 - reg: physical base address of the controller and length of memory mapped
16 - #reset-cells: must be 1.
20 dw_rst_1: reset-controller@0000 {
21 compatible = "snps,dw-high-reset";
23 #reset-cells = <1>;
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/openbmc/linux/arch/arm/boot/dts/qcom/
H A Dqcom-mdm9615-wp8548-mangoh-green.dts1 // SPDX-License-Identifier: GPL-2.0+ OR MIT
9 #include <dt-bindings/input/input.h>
11 #include "qcom-mdm9615-wp8548.dtsi"
12 #include <dt-bindings/interrupt-controller/irq.h>
13 #include <dt-bindings/gpio/gpio.h>
17 compatible = "swir,mangoh-green-wp8548", "swir,wp8548", "qcom,mdm9615";
28 stdout-path = "serial1:115200n8";
34 * - 2 : GPIOEXP_INT2
35 * - 7 : IOT1_GPIO2
36 * - 8 : IOT0_GPIO4
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/openbmc/linux/Documentation/devicetree/bindings/media/i2c/
H A Daptina,mt9v111.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Jacopo Mondi <jacopo@jmondi.org>
13 The Aptina MT9V111 is a 1/4-Inch VGA-format digital image sensor with a core
16 The sensor has an active pixel array of 640x480 pixels and can output a number
17 of image resolutions and formats controllable through a simple two-wires
30 enable-gpios:
31 description: Enable signal, pin name "OE#". Active low.
34 standby-gpios:
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H A Dov7670.txt8 - compatible: should be "ovti,ov7670"
9 - clocks: reference to the xclk input clock.
10 - clock-names: should be "xclk".
13 - hsync-active: active state of the HSYNC signal, 0/1 for LOW/HIGH respectively.
14 - vsync-active: active state of the VSYNC signal, 0/1 for LOW/HIGH respectively.
17 - reset-gpios: reference to the GPIO connected to the resetb pin, if any.
18 Active is low.
19 - powerdown-gpios: reference to the GPIO connected to the pwdn pin, if any.
20 Active is high.
21 - ov7670,pclk-hb-disable: a boolean property to suppress pixel clock output
[all …]
/openbmc/linux/Documentation/devicetree/bindings/sound/
H A Dtlv320adcx140.yaml1 # SPDX-License-Identifier: (GPL-2.0+ OR BSD-2-Clause)
4 ---
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
8 title: Texas Instruments TLV320ADCX140 Quad Channel Analog-to-Digital Converter
11 - Andrew Davis <afd@ti.com>
14 The TLV320ADCX140 are multichannel (4-ch analog recording or 8-ch digital
15 PDM microphones recording), high-performance audio, analog-to-digital
28 - ti,tlv320adc3140
29 - ti,tlv320adc5140
30 - ti,tlv320adc6140
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H A Drohm,bd28623.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
12 that can be connected to GPIOs reset and mute.
15 - Katsuhiro Suzuki <katsuhiro@katsuster.net>
18 - $ref: dai-common.yaml#
24 "#sound-dai-cells":
27 VCCA-supply:
31 VCCP1-supply:
35 VCCP2-supply:
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H A Dtas571x.txt4 signals that can be wired up to GPIOs: reset (strongly recommended), and
9 - compatible: should be one of the following:
10 - "ti,tas5707"
11 - "ti,tas5711",
12 - "ti,tas5717",
13 - "ti,tas5719",
14 - "ti,tas5721"
15 - "ti,tas5733"
16 - reg: The I2C address of the device
17 - #sound-dai-cells: must be equal to 0
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/openbmc/linux/Documentation/devicetree/bindings/display/panel/
H A Dpanel-common.yaml1 # SPDX-License-Identifier: GPL-2.0
3 ---
4 $id: http://devicetree.org/schemas/display/panel/panel-common.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Thierry Reding <thierry.reding@gmail.com>
11 - Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
24 width-mm:
29 height-mm:
43 non-descriptive information. For instance an LCD panel in a system that
55 panel-timing:
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/openbmc/linux/drivers/gpio/
H A Dgpiolib-of.c1 // SPDX-License-Identifier: GPL-2.0+
5 * Copyright (c) 2007-2008 MontaVista Software, Inc.
26 #include "gpiolib-of.h"
29 * This is Linux-specific flags. By default controllers' and Linux' mapping
31 * Linux-specific in their .xlate callback. Though, 1:1 mapping is recommended.
44 * of_gpio_named_count() - Count GPIOs for a device
51 * -EINVAL for an incorrectly formed gpios property, or
52 * -ENOENT for a missing gpios property
66 return of_count_phandle_with_args(np, propname, "#gpio-cells"); in of_gpio_named_count()
70 * of_gpio_spi_cs_get_count() - special GPIO counting for SPI
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/openbmc/linux/arch/arm/boot/dts/marvell/
H A Ddove-cm-a510.dtsi2 * Device Tree include for Compulab CM-A510 System-on-Module
6 * This file is dual-licensed: you can use it either under the terms
46 * The CM-A510 comes with several optional components:
66 * U2: 2 dual-role USB2.0 ports
70 * W: Broadcom BCM4319 802.11b/g/n (USI WM-N-BM-01 on SDIO1)
72 * GPIOs used on CM-A510:
73 * 1 GbE PHY reset (active low)
75 * 8 PowerOff (active low)
76 * 13 Touchscreen pen irq (active low)
77 * 65 System LED (active high)
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H A Darmada-385-clearfog-gtr.dtsi1 // SPDX-License-Identifier: (GPL-2.0 OR MIT)
5 * Rabeeh Khoury <rabeeh@solid-run.com>, based on Russell King clearfog work
9 SERDES mapping -
10 0. SATA1 on CON18, or optionally mini PCIe CON3 - PCIe0
12 2. SATA0 on CON17, or optionally mini PCIe CON4 - PCIe1
14 4. mini PCIe CON2 - PCIe2
17 USB 2.0 mapping -
18 0. USB 2.0 - 0 USB pins header CON12
19 1. USB 2.0 - 1 mini PCIe CON2
20 2. USB 2.0 - 2 to USB 3.0 connector (used with SERDES #3)
[all …]
H A Ddove-sbc-a510.dts2 * Device Tree file for Compulab SBC-A510 Single Board Computer
6 * This file is dual-licensed: you can use it either under the terms
46 * SBC-A510 comprises a PCA9555 I2C GPIO expander its GPIO lines connected to
48 * 0.0 USB0 VBUS_EN (active high)
51 * 0.3 DVI transmitter TI TFP410 PD# (active low power down)
52 * 0.4 LVDS transmitter DS90C365 PD# (active low power down)
53 * 0.5 LCD nRST (active low reset)
54 * 0.6 PCIe0 nRST (active low reset)
55 * 0.7 mini-PCIe slot W_DISABLE#
60 * 1.3 MMC VCC_EN (active high) and P21.7
[all …]
/openbmc/linux/drivers/watchdog/
H A Dwd501p.h1 /* SPDX-License-Identifier: GPL-1.0+ */
31 /* inverted opto isolated reset output: */
33 /* opto isolated reset output: */
39 #define WDC_SR_WCCR 1 /* Active low */ /* X X X */
40 #define WDC_SR_TGOOD 2 /* X X - */
43 #define WDC_SR_FANGOOD 16 /* X - - */
44 #define WDC_SR_PSUOVER 32 /* Active low */ /* X X - */
45 #define WDC_SR_PSUUNDR 64 /* Active low */ /* X X - */
46 #define WDC_SR_IRQ 128 /* Active low */ /* X X X */
/openbmc/linux/Documentation/firmware-guide/acpi/
H A Dgpio-properties.rst1 .. SPDX-License-Identifier: GPL-2.0
16 // Bluetooth device with reset and shutdown GPIOs
31 ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
34 Package () { "reset-gpios", Package () { ^BTH, 1, 1, 0 } },
35 Package () { "shutdown-gpios", Package () { ^BTH, 0, 0, 0 } },
55 active low or high, the "active_low" argument can be used here. Setting
56 it to 1 marks the GPIO as active low.
61 In our Bluetooth example the "reset-gpios" refers to the second GpioIo()
70 +-------------+-------------+-----------------------------------------------+
74 +-------------+-------------+-----------------------------------------------+
[all …]
/openbmc/u-boot/board/spear/x600/
H A Dfpga.c1 // SPDX-License-Identifier: GPL-2.0+
27 * Set the active-low FPGA reset signal.
32 * On x600 we have no means to toggle the FPGA reset signal in fpga_reset()
34 debug("%s:%d: RESET (%d)\n", __func__, __LINE__, assert); in fpga_reset()
38 * Set the FPGA's active-low SelectMap program line to the specified level
50 * Test the state of the active-low FPGA INIT line. Return 1 on INIT
51 * asserted (low).
62 * INIT signal state generated via a local state-machine. in fpga_init_fn()
73 * Test the state of the active-high FPGA DONE pin
80 * Wait for Tx-FIFO to become empty before looking for DONE in fpga_done_fn()
[all …]
/openbmc/linux/Documentation/devicetree/bindings/interrupt-controller/
H A Dopen-pic.txt13 - compatible: Specifies the compatibility list for the PIC. The type
14 shall be <string> and the value shall include "open-pic".
16 - reg: Specifies the base physical address(s) and size(s) of this
17 PIC's addressable register space. The type shall be <prop-encoded-array>.
19 - interrupt-controller: The presence of this property identifies the node
22 - #interrupt-cells: Specifies the number of cells needed to encode an
25 - #address-cells: Specifies the number of cells needed to encode an
27 'interrupt-map' nodes do not have to specify a parent unit address.
31 - pic-no-reset: The presence of this property indicates that the PIC
32 shall not be reset during runtime initialization. No property value shall
[all …]
/openbmc/linux/arch/arm64/boot/dts/freescale/
H A Dimx93-tqma9352-mba93xxla.dts1 // SPDX-License-Identifier: (GPL-2.0-or-later OR MIT)
3 * Copyright (c) 2022-2023 TQ-Systems GmbH <linux@ew.tq-group.com>,
4 * D-82229 Seefeld, Germany.
8 /dts-v1/;
10 #include <dt-bindings/input/input.h>
11 #include <dt-bindings/leds/common.h>
12 #include <dt-bindings/net/ti-dp83867.h>
13 #include <dt-bindings/pwm/pwm.h>
14 #include <dt-bindings/usb/pd.h>
15 #include "imx93-tqma9352.dtsi"
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/openbmc/linux/drivers/gpu/drm/meson/
H A Dmeson_dw_mipi_dsi.h1 /* SPDX-License-Identifier: GPL-2.0-or-later */
11 /* Top-level registers */
14 * 1=Assert SW reset of timing feature. 0=Release reset.
16 * 1=Assert SW reset on mipi_dsi_host_dpi block. 0=Release reset.
18 * 1=Assert SW reset on mipi_dsi_host_intr block. 0=Release reset.
20 * 1=Assert SW reset on IP core. 0=Release reset.
35 * [2] RW clock_freerun: Apply to auto-clock gate only. Default 0.
36 * 0=Default, use auto-clock gating to save power;
37 * 1=use free-run clock, disable auto-clock gating, for debug mode.
39 * have auto-clock gating. 1=Enable pixclk. Default 0.
[all …]
/openbmc/linux/Documentation/devicetree/bindings/input/
H A Datmel,maxtouch.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Nick Dyer <nick@shmanahar.org>
11 - Linus Walleij <linus.walleij@linaro.org>
18 - $ref: input.yaml#
30 vdda-supply:
34 vdd-supply:
38 reset-gpios:
41 Optional GPIO specifier for the touchscreen's reset pin
[all …]
/openbmc/u-boot/arch/arm/mach-socfpga/
H A Dfreeze_controller.c1 // SPDX-License-Identifier: GPL-2.0+
17 * Default state from cold reset is FREEZE_ALL; the global
33 writel(SYSMGR_FRZCTRL_SRC_VIO1_ENUM_SW, &freeze_controller_base->src); in sys_mgr_frzctrl_freeze_req()
38 &freeze_controller_base->vioctrl + channel_id); in sys_mgr_frzctrl_freeze_req()
41 * Assert active low enrnsl, plniotri in sys_mgr_frzctrl_freeze_req()
52 * Assert active low bhniotri signal and de-assert in sys_mgr_frzctrl_freeze_req()
53 * active high csrdone in sys_mgr_frzctrl_freeze_req()
66 * Assert active low enrnsl, plniotri and in sys_mgr_frzctrl_freeze_req()
73 clrbits_le32(&freeze_controller_base->hioctrl, reg_cfg_mask); in sys_mgr_frzctrl_freeze_req()
76 * assert active low bhniotri & nfrzdrv signals, in sys_mgr_frzctrl_freeze_req()
[all …]
/openbmc/docs/designs/
H A Ddevice-tree-gpio-naming.md12 subsystem. The replacement is a "descriptor-based" character device interface.
25 specific field used to name the GPIOs in the DTS is `gpio-line-names`. This
29 scheme in the face of a universe of potential use-cases.
37 - Ensure common function GPIOs within OpenBMC use the same naming convention
52 Pattern: `*-button`
55 BMC-less machines use a button to trigger system behavior and in a BMC-managed
59 #### power-button
64 depends on the index of Host and the active state is high or low.
68 - `host*-ready`: Host ready, active high
69 - `host*-ready-n`: Host ready, active low
[all …]
/openbmc/linux/Documentation/devicetree/bindings/iio/chemical/
H A Dams,ccs811.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Narcisa Vasile <narcisaanamaria12@gmail.com>
13 Ultra-Low Power Digital Gas Sensor for Monitoring Indoor Air Quality.
18 - ams,ccs811
22 reset-gpios:
23 description: GPIO connected to the nRESET line. This is an active low
27 wakeup-gpios:
28 description: GPIO connected to the nWAKE line. This is an active low
[all …]
/openbmc/u-boot/board/dfi/dfi-bt700/
H A Ddfi-bt700.c1 // SPDX-License-Identifier: GPL-2.0+
46 /* Pull xHCI hub reset to low (active low) */ in board_late_init()
52 /* Pull xHCI hub reset to high (active low) */ in board_late_init()
/openbmc/linux/arch/arm64/boot/dts/marvell/
H A Darmada-8040-clearfog-gt-8k.dts1 // SPDX-License-Identifier: (GPL-2.0+ OR MIT)
9 #include "armada-8040.dtsi"
11 #include <dt-bindings/input/input.h>
12 #include <dt-bindings/gpio/gpio.h>
16 compatible = "solidrun,clearfog-gt-8k", "marvell,armada8040",
17 "marvell,armada-ap806-quad", "marvell,armada-ap806";
20 stdout-path = "serial0:115200n8";
35 compatible = "pwm-fan";
37 cooling-levels = <0 51 102 153 204 255>;
38 #cooling-cells = <2>;
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