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/linux-6.12.1/Documentation/devicetree/bindings/leds/
Dleds-bcm6358.txt5 which can either be controlled by software (exporting the 74x164 as spi-gpio.
10 - compatible : should be "brcm,bcm6358-leds".
11 - #address-cells : must be 1.
12 - #size-cells : must be 0.
13 - reg : BCM6358 LED controller address and size.
16 - brcm,clk-div : SCK signal divider. Possible values are 1, 2, 4 and 8.
18 - brcm,clk-dat-low : Boolean, makes clock and data signals active low.
21 Each LED is represented as a sub-node of the brcm,bcm6358-leds device.
23 LED sub-node required properties:
24 - reg : LED pin number (only LEDs 0 to 31 are valid).
[all …]
Dleds-bcm6328.yaml1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
4 $id: http://devicetree.org/schemas/leds/leds-bcm6328.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Álvaro Fernández Rojas <noltari@gmail.com>
17 as spi-gpio. See
21 exporting the 74x164 as spi-gpio prevents those LEDs to be hardware
29 explained later in brcm,link-signal-sources). Even if a LED is hardware
34 Each LED is represented as a sub-node of the brcm,bcm6328-leds device.
38 const: brcm,bcm6328-leds
[all …]
/linux-6.12.1/Documentation/driver-api/gpio/
Dintro.rst17 A "General Purpose Input/Output" (GPIO) is a flexible software-controlled
25 System-on-Chip (SOC) processors heavily rely on GPIOs. In some cases, every
26 non-dedicated pin can be configured as a GPIO; and most chips have at least
31 Most PC southbridges have a few dozen GPIO-capable pins (with only the BIOS
36 - Output values are writable (high=1, low=0). Some chips also have
38 value might be driven, supporting "wire-OR" and similar schemes for the
41 - Input values are likewise readable (1, 0). Some chips support readback
42 of pins configured as "output", which is very useful in such "wire-OR"
44 input de-glitch/debounce logic, sometimes with software controls.
46 - Inputs can often be used as IRQ signals, often edge triggered but
[all …]
Dconsumer.rst21 - Simple compile coverage with e.g. COMPILE_TEST - it does not matter that
25 - Truly optional GPIOLIB support - where the driver does not really make use
26 of the GPIOs on certain compile-time configurations for certain systems, but
27 will use it under other compile-time configurations. In this case the
35 All the functions that work with the descriptor-based GPIO interface are
45 With the descriptor-based interface, GPIOs are identified with an opaque,
46 non-forgeable handler that must be obtained through a call to one of the
62 see Documentation/driver-api/gpio/board.rst
78 whether the line is configured active high or active low (see
87 with IS_ERR() (they will never return a NULL pointer). -ENOENT will be returned
[all …]
/linux-6.12.1/arch/arm/boot/dts/qcom/
Dqcom-mdm9615-wp8548-mangoh-green.dts1 // SPDX-License-Identifier: GPL-2.0+ OR MIT
9 #include <dt-bindings/gpio/gpio.h>
10 #include <dt-bindings/input/input.h>
11 #include <dt-bindings/interrupt-controller/irq.h>
13 #include "qcom-mdm9615-wp8548.dtsi"
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
[all …]
/linux-6.12.1/arch/mips/boot/dts/brcm/
Dbcm63268-comtrend-vr-3032u.dts1 // SPDX-License-Identifier: GPL-2.0
2 /dts-v1/;
7 compatible = "comtrend,vr-3032u", "brcm,bcm63268";
8 model = "Comtrend VR-3032u";
17 stdout-path = &uart0;
23 brcm,serial-leds;
24 brcm,serial-dat-low;
25 brcm,serial-shift-inv;
29 brcm,hardware-controlled;
30 brcm,link-signal-sources = <0>;
[all …]
Dbcm6358-neufbox4-sercomm.dts1 // SPDX-License-Identifier: GPL-2.0
2 /dts-v1/;
7 compatible = "sfr,nb4-ser", "brcm,bcm6358";
17 stdout-path = &uart0;
26 active-low;
27 label = "nb4-ser:white:alarm";
31 active-low;
32 label = "nb4-ser:white:tv";
36 active-low;
37 label = "nb4-ser:white:tel";
[all …]
/linux-6.12.1/Documentation/devicetree/bindings/power/supply/
Dmaxim,max8903.yaml1 # SPDX-License-Identifier: GPL-2.0
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Sebastian Reichel <sre@kernel.org>
13 - $ref: power-supply.yaml#
19 dok-gpios:
21 description: Valid DC power has been detected (active low, input)
23 uok-gpios:
25 description: Valid USB power has been detected (active low, input)
27 cen-gpios:
[all …]
/linux-6.12.1/Documentation/devicetree/bindings/net/
Dmdio-mux-gpio.yaml1 # SPDX-License-Identifier: GPL-2.0
3 ---
4 $id: http://devicetree.org/schemas/net/mdio-mux-gpio.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Andrew Lunn <andrew@lunn.ch>
17 - $ref: /schemas/net/mdio-mux.yaml#
21 const: mdio-mux-gpio
30 - compatible
31 - gpios
36 - |
[all …]
/linux-6.12.1/Documentation/devicetree/bindings/sound/
Dti,tlv320adcx140.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
[all …]
/linux-6.12.1/include/linux/
Dlp.h1 /* SPDX-License-Identifier: GPL-2.0 */
3 * usr/include/linux/lp.h c.1991-1992 James Wiegand
16 /* Magic numbers for defining port-device mappings */
17 #define LP_PARPORT_UNSPEC -4
18 #define LP_PARPORT_AUTO -3
19 #define LP_PARPORT_OFF -2
20 #define LP_PARPORT_NONE -1
26 #define LP_IRQ(minor) lp_table[(minor)].dev->port->irq /* interrupt # */
33 #define LP_BASE(x) lp_table[(x)].dev->port->base
71 * signals are active low. An example is LP_STROBE, which must be programmed
[all …]
/linux-6.12.1/Documentation/devicetree/bindings/media/i2c/
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 …]
Dtvp7002.txt7 - compatible : Must be "ti,tvp7002"
10 - hsync-active: HSYNC Polarity configuration for the bus. Default value when
13 - vsync-active: VSYNC Polarity configuration for the bus. Default value when
16 - pclk-sample: Clock polarity of the bus. Default value when this property is
19 - sync-on-green-active: Active state of Sync-on-green signal property of the
21 0 = Normal Operation (Active Low, Default)
24 - field-even-active: Active-high Field ID output polarity control of the bus.
27 0 = Normal Operation (Active Low, Default)
31 video-interfaces.txt.
44 hsync-active = <1>;
[all …]
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:
[all …]
/linux-6.12.1/Documentation/devicetree/bindings/power/reset/
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#
10 - Sebastian Reichel <sre@kernel.org>
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
23 reset. After a delay specified by active-delay, the GPIO is set to inactive, thus causing an
24 active->inactive edge, triggering negative edge triggered reset. After a delay specified by
[all …]
/linux-6.12.1/Documentation/hwmon/
Dds620.rst20 -----------
23 high and low temperature limits which can be user defined (i.e. programmed
24 into non-volatile on-chip registers). Temperature range is -55 degree Celsius
30 PO is always low. If .pomode == 1, the thermostat is in PO_LOW mode. I.e., the
31 output pin PO becomes active when the temperature falls below temp1_min and
32 stays active until the temperature goes above temp1_max.
35 output pin becomes active when the temperature goes above temp1_max and stays
36 active until the temperature falls below temp1_min.
38 The PO output pin of the DS620 operates active-low.
/linux-6.12.1/drivers/watchdog/
Dwd501p.h1 /* SPDX-License-Identifier: GPL-1.0+ */
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 */
/linux-6.12.1/Documentation/firmware-guide/acpi/
Dgpio-properties.rst1 .. SPDX-License-Identifier: GPL-2.0
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 +-------------+-------------+-----------------------------------------------+
76 +-------------+-------------+-----------------------------------------------+
[all …]
/linux-6.12.1/Documentation/devicetree/bindings/display/panel/
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:
[all …]
/linux-6.12.1/drivers/media/dvb-frontends/
Dm88ds3103.h1 /* SPDX-License-Identifier: GPL-2.0-or-later */
19 * enum m88ds3103_ts_mode - TS connection mode
47 * struct m88ds3103_platform_data - Platform data for the m88ds3103 driver
52 * @ts_clk_pol: TS clk polarity. 1-active at falling edge; 0-active at rising
59 * @lnb_hv_pol: LNB H/V pin polarity. 0: pin high set to VOLTAGE_18, pin low to
60 * set VOLTAGE_13. 1: pin high set to VOLTAGE_13, pin low to set VOLTAGE_18.
61 * @lnb_en_pol: LNB enable pin polarity. 0: pin high to disable, pin low to
62 * enable. 1: pin high to enable, pin low to disable.
88 * struct m88ds3103_config - m88ds3102 configuration
98 * 1-active at falling edge; 0-active at rising edge.
[all …]
/linux-6.12.1/arch/arm/boot/dts/marvell/
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)
[all …]
/linux-6.12.1/sound/soc/sof/amd/
Dacp-stream.c1 // SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
15 #include "acp-dsp-offset.h"
29 const struct sof_amd_acp_desc *desc = get_chip_info(sdev->pdata); in acp_dsp_stream_config()
31 int stream_tag = stream->stream_tag; in acp_dsp_stream_config()
32 u32 low, high, offset, reg_val; in acp_dsp_stream_config() local
41 stream->reg_offset = PTE_GRP1_OFFSET; in acp_dsp_stream_config()
47 stream->reg_offset = PTE_GRP2_OFFSET; in acp_dsp_stream_config()
53 stream->reg_offset = PTE_GRP3_OFFSET; in acp_dsp_stream_config()
59 stream->reg_offset = PTE_GRP4_OFFSET; in acp_dsp_stream_config()
65 stream->reg_offset = PTE_GRP5_OFFSET; in acp_dsp_stream_config()
[all …]
/linux-6.12.1/Documentation/devicetree/bindings/gpio/
Dnvidia,tegra20-gpio.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/gpio/nvidia,tegra20-gpio.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: NVIDIA Tegra GPIO Controller (Tegra20 - Tegra210)
10 - Thierry Reding <thierry.reding@gmail.com>
11 - Jon Hunter <jonathanh@nvidia.com>
16 - enum:
17 - nvidia,tegra20-gpio
18 - nvidia,tegra30-gpio
[all …]
/linux-6.12.1/Documentation/devicetree/bindings/serial/
Drs485.yaml1 # SPDX-License-Identifier: GPL-2.0
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 direction for the built-in half-duplex mode. The properties described
11 hereafter shall be given to a half-duplex capable UART node.
14 - Rob Herring <robh@kernel.org>
17 rs485-rts-delay:
18 description: prop-encoded-array <a b>
19 $ref: /schemas/types.yaml#/definitions/uint32-array
22 - description: Delay between rts signal and beginning of data sent in
[all …]
/linux-6.12.1/Documentation/userspace-api/gpio/
Dgpio-v2-line-set-values-ioctl.rst1 .. SPDX-License-Identifier: GPL-2.0
12 GPIO_V2_LINE_SET_VALUES_IOCTL - Set the values of requested output lines.
26 :c:type:`request.fd<gpio_v2_line_request>` by gpio-v2-get-line-ioctl.rst.
38 The values set are logical, indicating if the line is to be active or inactive.
40 values (active/inactive) and physical values (high/low).
41 If ``GPIO_V2_LINE_FLAG_ACTIVE_LOW`` is not set then active is high and inactive
42 is low. If ``GPIO_V2_LINE_FLAG_ACTIVE_LOW`` is set then active is low and
53 On error -1 and the ``errno`` variable is set appropriately.
54 Common error codes are described in error-codes.rst.

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