Home
last modified time | relevance | path

Searched +full:scl +full:- +full:open +full:- +full:drain (Results 1 – 25 of 36) sorted by relevance

12

/openbmc/linux/Documentation/devicetree/bindings/i2c/
H A Di2c-gpio.yaml1 # SPDX-License-Identifier: GPL-2.0
3 ---
4 $id: http://devicetree.org/schemas/i2c/i2c-gpio.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Wolfram Sang <wsa@kernel.org>
13 - $ref: /schemas/i2c/i2c-controller.yaml#
18 - const: i2c-gpio
20 sda-gpios:
23 active high using open drain with (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)
24 from <dt-bindings/gpio/gpio.h> since the signal is by definition
[all …]
/openbmc/linux/include/linux/platform_data/
H A Di2c-gpio.h1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * i2c-gpio interface to platform code
11 * struct i2c_gpio_platform_data - Platform-dependent data for i2c-gpio
12 * @udelay: signal toggle delay. SCL frequency is (500 / udelay) kHz
14 * SCL low for longer than this, the transfer will time out.
15 * @sda_is_open_drain: SDA is configured as open drain, i.e. the pin
20 * This is for clients that can only read SDA/SCL.
21 * @sda_has_no_pullup: SDA is used in a non-compliant way and has no pull-up.
22 * Therefore disable open-drain.
23 * @scl_is_open_drain: SCL is set up as open drain. Same requirements
[all …]
/openbmc/linux/drivers/i2c/busses/
H A Di2c-gpio.c1 // SPDX-License-Identifier: GPL-2.0-only
11 #include <linux/i2c-algo-bit.h>
16 #include <linux/platform_data/i2c-gpio.h>
23 struct gpio_desc *scl; member
37 * valid for pins configured as open drain (i.e. setting the value
44 gpiod_set_value_cansleep(priv->sda, state); in i2c_gpio_setsda_val()
48 * Toggle SCL by changing the output value of the pin. This is used
49 * for pins that are configured as open drain and for output-only
57 gpiod_set_value_cansleep(priv->scl, state); in i2c_gpio_setscl_val()
64 return gpiod_get_value_cansleep(priv->sda); in i2c_gpio_getsda()
[all …]
/openbmc/linux/arch/arm/boot/dts/microchip/
H A Dat91-foxg20.dts1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * at91-foxg20.dts - Device Tree file for Acme Systems FoxG20 board
9 /dts-v1/;
26 clock-frequency = <32768>;
30 clock-frequency = <18432000>;
38 compatible = "atmel,tcb-timer";
43 compatible = "atmel,tcb-timer";
49 atmel,vbus-gpio = <&pioC 6 GPIO_ACTIVE_HIGH>;
54 pinctrl-0 = <
58 pinctrl-names = "default";
[all …]
H A Dat91sam9x5.dtsi1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * at91sam9x5.dtsi - Device Tree Include file for AT91SAM9x5 family SoC
11 #include <dt-bindings/dma/at91.h>
12 #include <dt-bindings/pinctrl/at91.h>
13 #include <dt-bindings/interrupt-controller/irq.h>
14 #include <dt-bindings/gpio/gpio.h>
15 #include <dt-bindings/clock/at91.h>
16 #include <dt-bindings/mfd/at91-usart.h>
19 #address-cells = <1>;
20 #size-cells = <1>;
[all …]
H A Dat91sam9rl.dtsi1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * at91sam9rl.dtsi - Device Tree Include file for AT91SAM9RL family SoC
6 * Alexandre Belloni <alexandre.belloni@free-electrons.com>
9 #include <dt-bindings/pinctrl/at91.h>
10 #include <dt-bindings/clock/at91.h>
11 #include <dt-bindings/interrupt-controller/irq.h>
12 #include <dt-bindings/gpio/gpio.h>
13 #include <dt-bindings/pwm/pwm.h>
14 #include <dt-bindings/mfd/at91-usart.h>
17 #address-cells = <1>;
[all …]
H A Dat91sam9261.dtsi1 // SPDX-License-Identifier: GPL-2.0-only
3 * at91sam9261.dtsi - Device Tree Include file for AT91SAM9261 SoC
5 * Copyright (C) 2013 Jean-Jacques Hiblot <jjhiblot@traphandler.com>
8 #include <dt-bindings/pinctrl/at91.h>
9 #include <dt-bindings/interrupt-controller/irq.h>
10 #include <dt-bindings/gpio/gpio.h>
11 #include <dt-bindings/clock/at91.h>
12 #include <dt-bindings/mfd/at91-usart.h>
15 #address-cells = <1>;
16 #size-cells = <1>;
[all …]
H A Dat91rm9200.dtsi1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * at91rm9200.dtsi - Device Tree Include file for AT91RM9200 family SoC
12 #include <dt-bindings/pinctrl/at91.h>
13 #include <dt-bindings/interrupt-controller/irq.h>
14 #include <dt-bindings/gpio/gpio.h>
15 #include <dt-bindings/clock/at91.h>
16 #include <dt-bindings/mfd/at91-usart.h>
19 #address-cells = <1>;
20 #size-cells = <1>;
23 interrupt-parent = <&aic>;
[all …]
/openbmc/u-boot/drivers/pinctrl/
H A Dpinctrl-sandbox.c1 // SPDX-License-Identifier: GPL-2.0+
13 "SCL",
21 "I2C SCL",
25 "1-wire gpio",
44 { "bias-disable", PIN_CONFIG_BIAS_DISABLE, 0 },
45 { "bias-high-impedance", PIN_CONFIG_BIAS_HIGH_IMPEDANCE, 0 },
46 { "bias-bus-hold", PIN_CONFIG_BIAS_BUS_HOLD, 0 },
47 { "bias-pull-up", PIN_CONFIG_BIAS_PULL_UP, 1 },
48 { "bias-pull-down", PIN_CONFIG_BIAS_PULL_DOWN, 1 },
49 { "bias-pull-pin-default", PIN_CONFIG_BIAS_PULL_PIN_DEFAULT, 1 },
[all …]
/openbmc/linux/Documentation/devicetree/bindings/mfd/
H A Das3722.txt4 -------------------
5 - compatible: Must be "ams,as3722".
6 - reg: I2C device address.
7 - interrupt-controller: AS3722 has internal interrupt controller which takes the
8 interrupt request from internal sub-blocks like RTC, regulators, GPIOs as well
10 - #interrupt-cells: Should be set to 2 for IRQ number and flags.
12 of AS3722 are defined at dt-bindings/mfd/as3722.h
14 interrupts.txt, using dt-bindings/irq.
17 --------------------
18 - ams,enable-internal-int-pullup: Boolean property, to enable internal pullup on
[all …]
/openbmc/linux/arch/arm/boot/dts/nvidia/
H A Dtegra30-apalis-v1.1.dtsi1 // SPDX-License-Identifier: GPL-2.0 OR MIT
16 avdd-pexa-supply = <&vdd2_reg>;
17 avdd-pexb-supply = <&vdd2_reg>;
18 avdd-pex-pll-supply = <&vdd2_reg>;
19 avdd-plle-supply = <&ldo6_reg>;
20 hvdd-pex-supply = <&reg_module_3v3>;
21 vddio-pex-ctl-supply = <&reg_module_3v3>;
22 vdd-pexa-supply = <&vdd2_reg>;
23 vdd-pexb-supply = <&vdd2_reg>;
27 nvidia,num-lanes = <4>;
[all …]
H A Dtegra30-apalis.dtsi1 // SPDX-License-Identifier: GPL-2.0
15 avdd-pexa-supply = <&vdd2_reg>;
16 avdd-pexb-supply = <&vdd2_reg>;
17 avdd-pex-pll-supply = <&vdd2_reg>;
18 avdd-plle-supply = <&ldo6_reg>;
19 hvdd-pex-supply = <&reg_module_3v3>;
20 vddio-pex-ctl-supply = <&reg_module_3v3>;
21 vdd-pexa-supply = <&vdd2_reg>;
22 vdd-pexb-supply = <&vdd2_reg>;
26 nvidia,num-lanes = <4>;
[all …]
H A Dtegra30-colibri.dtsi1 // SPDX-License-Identifier: GPL-2.0
15 nvidia,ddc-i2c-bus = <&hdmi_ddc>;
16 nvidia,hpd-gpio =
18 pll-supply = <&reg_1v8_avdd_hdmi_pll>;
19 vdd-supply = <&reg_3v3_avdd_hdmi>;
24 lan-reset-n-hog {
25 gpio-hog;
27 output-high;
28 line-name = "LAN_RESET#";
33 pinctrl-names = "default";
[all …]
H A Dtegra124-apalis-v1.2.dtsi1 // SPDX-License-Identifier: GPL-2.0 OR MIT
3 * Copyright 2016-2018 Toradex AG
7 #include "tegra124-apalis-emc.dtsi"
21 avddio-pex-supply = <&reg_1v05_vdd>;
22 avdd-pex-pll-supply = <&reg_1v05_vdd>;
23 avdd-pll-erefe-supply = <&reg_1v05_avdd>;
24 dvddio-pex-supply = <&reg_1v05_vdd>;
25 hvdd-pex-pll-e-supply = <&reg_module_3v3>;
26 hvdd-pex-supply = <&reg_module_3v3>;
27 vddio-pex-ctl-supply = <&reg_module_3v3>;
[all …]
H A Dtegra124-apalis.dtsi1 // SPDX-License-Identifier: GPL-2.0 OR X11
3 * Copyright 2016-2019 Toradex AG
7 #include "tegra124-apalis-emc.dtsi"
20 avddio-pex-supply = <&reg_1v05_vdd>;
21 avdd-pex-pll-supply = <&reg_1v05_vdd>;
22 avdd-pll-erefe-supply = <&reg_1v05_avdd>;
23 dvddio-pex-supply = <&reg_1v05_vdd>;
24 hvdd-pex-pll-e-supply = <&reg_module_3v3>;
25 hvdd-pex-supply = <&reg_module_3v3>;
26 vddio-pex-ctl-supply = <&reg_module_3v3>;
[all …]
/openbmc/linux/Documentation/driver-api/
H A 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
8 the same bus. I2C only needs two signals (SCL for clock, SDA for data),
12 I2C is a multi-master bus; open drain signaling is used to arbitrate
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
/openbmc/u-boot/arch/arm/dts/
H A Dat91sam9x5.dtsi2 * at91sam9x5.dtsi - Device Tree Include file for AT91SAM9x5 family SoC
13 #include <dt-bindings/dma/at91.h>
14 #include <dt-bindings/pinctrl/at91.h>
15 #include <dt-bindings/interrupt-controller/irq.h>
16 #include <dt-bindings/gpio/gpio.h>
17 #include <dt-bindings/clock/at91.h>
22 interrupt-parent = <&aic>;
45 compatible = "arm,arm926ej-s";
56 compatible = "fixed-clock";
57 #clock-cells = <0>;
[all …]
H A Dat91sam9rl.dtsi2 * at91sam9rl.dtsi - Device Tree Include file for AT91SAM9RL family SoC
4 * Copyright (C) 2014 Alexandre Belloni <alexandre.belloni@free-electrons.com>
10 #include <dt-bindings/pinctrl/at91.h>
11 #include <dt-bindings/clock/at91.h>
12 #include <dt-bindings/interrupt-controller/irq.h>
13 #include <dt-bindings/gpio/gpio.h>
14 #include <dt-bindings/pwm/pwm.h>
19 interrupt-parent = <&aic>;
42 compatible = "arm,arm926ej-s";
53 compatible = "fixed-clock";
[all …]
H A Dtegra124-apalis.dts4 * This file is dual-licensed: you can use it either under the terms
42 /dts-v1/;
44 #include <dt-bindings/input/input.h>
49 compatible = "toradex,apalis-tk1-eval", "toradex,apalis-tk1",
73 stdout-path = "serial0:115200n8";
80 pcie-controller@01003000 {
82 avddio-pex-supply = <&vdd_1v05>;
83 avdd-pex-pll-supply = <&vdd_1v05>;
84 avdd-pll-erefe-supply = <&avdd_1v05>;
85 dvddio-pex-supply = <&vdd_1v05>;
[all …]
H A Dat91sam9261.dtsi2 * at91sam9261.dtsi - Device Tree Include file for AT91SAM9261 SoC
4 * Copyright (C) 2013 Jean-Jacques Hiblot <jjhiblot@traphandler.com>
10 #include <dt-bindings/pinctrl/at91.h>
11 #include <dt-bindings/interrupt-controller/irq.h>
12 #include <dt-bindings/gpio/gpio.h>
13 #include <dt-bindings/clock/at91.h>
18 interrupt-parent = <&aic>;
38 compatible = "arm,arm926ej-s";
49 compatible = "fixed-clock";
50 #clock-cells = <0>;
[all …]
/openbmc/linux/arch/powerpc/boot/dts/
H A Dwii.dts1 // SPDX-License-Identifier: GPL-2.0-or-later
6 * Copyright (C) 2008-2009 The GameCube Linux Team
10 /dts-v1/;
11 #include <dt-bindings/gpio/gpio.h>
12 #include <dt-bindings/input/input.h>
15 * This is commented-out for now.
25 #address-cells = <1>;
26 #size-cells = <1>;
29 bootargs = "root=/dev/mmcblk0p2 rootwait udbg-immortal";
34 reg = <0x00000000 0x01800000 /* MEM1 24MB 1T-SRAM */
[all …]
/openbmc/linux/Documentation/driver-api/gpio/
H A Ddriver.rst26 between 0 and n-1, n being the number of GPIOs managed by the chip.
29 example if a system uses a memory-mapped set of I/O-registers where 32 GPIO
30 lines are handled by one bit per line in a 32-bit register, it makes sense to
44 So for example one platform could use global numbers 32-159 for GPIOs, with a
46 global numbers 0..63 with one set of GPIO controllers, 64-79 with another type
47 of GPIO controller, and on one particular board 80-95 with an FPGA. The legacy
49 2000-2063 to identify GPIO lines in a bank of I2C GPIO expanders.
60 - methods to establish GPIO line direction
61 - methods used to access GPIO line values
62 - method to set electrical configuration for a given GPIO line
[all …]
/openbmc/u-boot/board/keymile/kmp204x/
H A Dkmp204x.c1 // SPDX-License-Identifier: GPL-2.0+
36 * 2 dedicated QRIO GPIOs externally pull the SCL and SDA lines
37 * For I2C only the low state is activly driven and high state is pulled-up
39 * -> as an active output to drive a low state
40 * -> as an open-drain input to have a pulled-up high state
51 /* set I2C bus 1 deblocking GPIOs input, but 0 value for open drain */ in i2c_deblock_gpio_cfg()
94 setbits_be32(&gur->ddrclkdr, 0x001f000f); in board_early_init_f()
97 if ((gur->rstrqsr1 & (RSTRQSR1_WDT_RR | RSTRQSR1_SW_RR)) == in board_early_init_f()
103 setbits_be32(&gur->rstrqsr1, RSTRQSR1_WDT_RR | RSTRQSR1_SW_RR); in board_early_init_f()
105 /* set the BFTIC's prstcfg to reset at power-up and unit reset only */ in board_early_init_f()
[all …]
/openbmc/linux/arch/arm/boot/dts/st/
H A Dstm32f7-pinctrl.dtsi1 // SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
3 * Copyright (C) STMicroelectronics 2017 - All Rights Reserved
7 #include <dt-bindings/pinctrl/stm32-pinfunc.h>
8 #include <dt-bindings/mfd/stm32f7-rcc.h>
13 #address-cells = <1>;
14 #size-cells = <1>;
16 interrupt-parent = <&exti>;
20 gpio-controller;
21 #gpio-cells = <2>;
22 interrupt-controller;
[all …]
/openbmc/linux/include/linux/i3c/
H A Dmaster.h1 /* SPDX-License-Identifier: GPL-2.0 */
38 * struct i3c_i2c_dev_desc - Common part of the I3C/I2C device descriptor
61 * struct i2c_dev_boardinfo - I2C device board information
67 * This structure is used to attach board-level information to an I2C device.
77 * struct i2c_dev_desc - I2C device descriptor
87 * using &struct_i3c_master_controller->ops->attach_i2c_dev().
101 * struct i3c_ibi_slot - I3C IBI (In-Band Interrupt) slot
108 * An IBI slot is an object pre-allocated by the controller and used when an
115 * simple kmalloc-based allocation, the generic IBI slot pool can be used.
125 * struct i3c_device_ibi_info - IBI information attached to a specific device
[all …]

12