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/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>
13 Drive a GPIO line that can be used to restart the system from a restart handler.
16 request the given gpio line and install a restart handler. If the optional properties
17 'open-source' is not found, the GPIO line will be driven in the inactive state. Otherwise its
18 not driven until the restart is initiated.
[all …]
H A Dgpio-poweroff.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/power/reset/gpio-poweroff.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: GPIO controlled power off
10 - Sebastian Reichel <sre@kernel.org>
13 System power off support via a GPIO line. When a shutdown is
14 executed the operating system is expected to switch the GPIO
15 from inactive to active. After a delay (active-delay-ms) it
17 delay (inactive-delay-ms) it is configured as active again.
[all …]
/linux/Documentation/driver-api/gpio/
H A Ddrivers-on-gpio.rst2 Subsystem drivers using GPIO
5 Note that standard kernel drivers exist for common GPIO tasks and will provide
6 the right in-kernel and userspace APIs/ABIs for the job, and that these
10 - leds-gpio: drivers/leds/leds-gpio.c will handle LEDs connected to GPIO
13 - ledtrig-gpio: drivers/leds/trigger/ledtrig-gpio.c will provide a LED trigger,
14 i.e. a LED will turn on/off in response to a GPIO line going high or low
15 (and that LED may in turn use the leds-gpio as per above).
17 - gpio-keys: drivers/input/keyboard/gpio_keys.c is used when your GPIO line
20 - gpio-keys-polled: drivers/input/keyboard/gpio_keys_polled.c is used when your
21 GPIO line cannot generate interrupts, so it needs to be periodically polled
[all …]
/linux/drivers/power/reset/
H A Dgpio-restart.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * Toggles a GPIO pin to restart a device
7 * Based on the gpio-poweroff driver.
14 #include <linux/gpio/consumer.h>
27 struct gpio_restart *gpio_restart = data->cb_data; in gpio_restart_notify()
29 /* drive it active, also inactive->active edge */ in gpio_restart_notify()
30 gpiod_direction_output(gpio_restart->reset_gpio, 1); in gpio_restart_notify()
31 mdelay(gpio_restart->active_delay_ms); in gpio_restart_notify()
33 /* drive inactive, also active->inactive edge */ in gpio_restart_notify()
34 gpiod_set_value(gpio_restart->reset_gpio, 0); in gpio_restart_notify()
[all …]
H A DMakefile1 # SPDX-License-Identifier: GPL-2.0
2 obj-$(CONFIG_POWER_RESET_AS3722) += as3722-poweroff.o
3 obj-$(CONFIG_POWER_RESET_AT91_POWEROFF) += at91-poweroff.o
4 obj-$(CONFIG_POWER_RESET_AT91_RESET) += at91-reset.o
5 obj-$(CONFIG_POWER_RESET_AT91_SAMA5D2_SHDWC) += at91-sama5d2_shdwc.o
6 obj-$(CONFIG_POWER_RESET_ATC260X) += atc260x-poweroff.o
7 obj-$(CONFIG_POWER_RESET_AXXIA) += axxia-reset.o
8 obj-$(CONFIG_POWER_RESET_BRCMKONA) += brcm-kona-reset.o
9 obj-$(CONFIG_POWER_RESET_BRCMSTB) += brcmstb-reboot.o
10 obj-$(CONFIG_POWER_RESET_EP93XX) += ep93xx-restart.o
[all …]
H A Dxgene-reboot.c1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * AppliedMicro X-Gene SoC Reboot Driver
9 * This driver provides system reboot functionality for APM X-Gene SoC.
11 * implements GPIO shutdown, use the gpio-poweroff.c driver.
31 struct xgene_reboot_context *ctx = data->cb_data; in xgene_restart_handler()
34 writel(ctx->mask, ctx->csr); in xgene_restart_handler()
38 dev_emerg(ctx->dev, "Unable to restart system\n"); in xgene_restart_handler()
46 struct device *dev = &pdev->dev; in xgene_reboot_probe()
51 return -ENOMEM; in xgene_reboot_probe()
53 ctx->csr = devm_platform_ioremap_resource(pdev, 0); in xgene_reboot_probe()
[all …]
/linux/arch/arm/mach-omap1/
H A Dams-delta-fiq-handler.S1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * linux/arch/arm/mach-omap1/ams-delta-fiq-handler.S
14 #include <linux/platform_data/ams-delta-fiq.h>
15 #include <linux/platform_data/gpio-omap.h>
16 #include <linux/soc/ti/omap1-io.h>
22 #include "ams-delta-fiq.h"
23 #include "board-ams-delta.h"
27 * OMAP1510 GPIO related symbol copied from arch/arm/mach-omap1/gpio15xx.c.
32 /* GPIO register bitmasks */
79 * r8 - temporary
[all …]
/linux/arch/arm64/boot/dts/qcom/
H A Dmsm8916-ufi.dtsi1 // SPDX-License-Identifier: GPL-2.0-only
3 #include "msm8916-pm8916.dtsi"
5 #include <dt-bindings/gpio/gpio.h>
6 #include <dt-bindings/leds/common.h>
9 chassis-type = "embedded";
17 stdout-path = "serial0";
20 gpio-keys {
21 compatible = "gpio-keys";
23 pinctrl-0 = <&button_default>;
24 pinctrl-names = "default";
[all …]
/linux/drivers/net/can/dev/
H A Ddev.c1 // SPDX-License-Identifier: GPL-2.0-only
2 /* Copyright (C) 2005 Marc Kleine-Budde, Pengutronix
4 * Copyright (C) 2008-2009 Wolfgang Grandegger <wg@grandegger.com>
13 #include <linux/can/can-ml.h>
16 #include <linux/gpio/consumer.h>
24 if (new_state <= priv->state) in can_update_state_error_stats()
29 priv->can_stats.error_warning++; in can_update_state_error_stats()
32 priv->can_stats.error_passive++; in can_update_state_error_stats()
35 priv->can_stats.bus_off++; in can_update_state_error_stats()
108 *tx_state = can_state_err_to_state(bec->txerr); in can_state_get_by_berr_counter()
[all …]
/linux/arch/riscv/boot/dts/starfive/
H A Djh7100-starfive-visionfive-v1.dts1 // SPDX-License-Identifier: GPL-2.0 OR MIT
7 /dts-v1/;
8 #include "jh7100-common.dtsi"
12 compatible = "starfive,visionfive-v1", "starfive,jh7100";
14 gpio-restart {
15 compatible = "gpio-restart";
16 gpios = <&gpio 63 GPIO_ACTIVE_HIGH>;
22 phy-handle = <&phy>;
26 * The board uses a Motorcomm YT8521 PHY supporting RGMII-ID, but requires
36 phy: ethernet-phy@0 {
[all …]
/linux/arch/arm/boot/dts/microchip/
H A Dlan966x-pcb8291.dts1 // SPDX-License-Identifier: (GPL-2.0+ OR MIT)
3 * lan966x_pcb8291.dts - Device Tree file for PCB8291
5 /dts-v1/;
7 #include "dt-bindings/phy/phy-lan966x-serdes.h"
10 model = "Microchip EVB - LAN9662";
11 compatible = "microchip,lan9662-pcb8291", "microchip,lan9662", "microchip,lan966";
14 stdout-path = "serial0:115200n8";
21 gpio-restart {
22 compatible = "gpio-restart";
23 gpios = <&gpio 56 GPIO_ACTIVE_LOW>;
[all …]
H A Dlan966x-kontron-kswitch-d10-mmt.dtsi1 // SPDX-License-Identifier: (GPL-2.0+ OR MIT)
6 /dts-v1/;
8 #include "dt-bindings/phy/phy-lan966x-serdes.h"
16 stdout-path = "serial0:115200n8";
19 gpio-restart {
20 compatible = "gpio-restart";
21 pinctrl-0 = <&reset_pins>;
22 pinctrl-names = "default";
23 gpios = <&gpio 56 GPIO_ACTIVE_LOW>;
29 atmel,flexcom-mode = <ATMEL_FLEXCOM_MODE_USART>;
[all …]
H A Dlan966x-pcb8290.dts1 // SPDX-License-Identifier: (GPL-2.0+ OR MIT)
3 * lan966x-pcb8290.dts - Device Tree file for LAN966X-PCB8290 board
9 /dts-v1/;
11 #include "dt-bindings/phy/phy-lan966x-serdes.h"
15 compatible = "microchip,lan9668-pcb8290", "microchip,lan9668", "microchip,lan966";
17 gpio-restart {
18 compatible = "gpio-restart";
19 gpios = <&gpio 56 GPIO_ACTIVE_LOW>;
28 &gpio {
29 miim_a_pins: mdio-pins {
[all …]
H A Dlan966x-pcb8309.dts1 // SPDX-License-Identifier: (GPL-2.0+ OR MIT)
3 * lan966x_pcb8309.dts - Device Tree file for PCB8309
5 /dts-v1/;
7 #include "dt-bindings/phy/phy-lan966x-serdes.h"
10 model = "Microchip EVB - LAN9662";
11 compatible = "microchip,lan9662-pcb8309", "microchip,lan9662", "microchip,lan966";
20 stdout-path = "serial0:115200n8";
23 gpio-restart {
24 compatible = "gpio-restart";
25 gpios = <&gpio 56 GPIO_ACTIVE_LOW>;
[all …]
/linux/arch/powerpc/platforms/embedded6xx/
H A Dwii.c1 // SPDX-License-Identifier: GPL-2.0-or-later
5 * Nintendo Wii board-specific support
6 * Copyright (C) 2008-2009 The GameCube Linux Team
24 #include "flipper-pic.h"
25 #include "hlwd-pic.h"
29 #define HW_CTRL_COMPATIBLE "nintendo,hollywood-control"
34 /* gpio */
35 #define HW_GPIO_COMPATIBLE "nintendo,hollywood-gpio"
62 int error = -ENODEV; in wii_ioremap_hw_regs()
120 /* make sure that the poweroff GPIO is configured as output */ in wii_power_off()
[all …]
/linux/arch/arm/boot/dts/synaptics/
H A Dberlin2cd-valve-steamlink.dts1 // SPDX-License-Identifier: (GPL-2.0 OR MIT)
5 /dts-v1/;
8 #include <dt-bindings/gpio/gpio.h>
19 gpio-restart {
20 compatible = "gpio-restart";
22 active-delay = <100>;
23 inactive-delay = <10>;
24 wait-delay = <100>;
30 cpu-supply = <&vcpu>;
31 operating-points = <
[all …]
/linux/arch/riscv/boot/dts/sifive/
H A Dhifive-unleashed-a00.dts1 // SPDX-License-Identifier: (GPL-2.0 OR MIT)
2 /* Copyright (c) 2018-2019 SiFive, Inc */
4 #include "fu540-c000.dtsi"
5 #include <dt-bindings/gpio/gpio.h>
6 #include <dt-bindings/leds/common.h>
7 #include <dt-bindings/pwm/pwm.h>
14 compatible = "sifive,hifive-unleashed-a00", "sifive,fu540-c000",
18 stdout-path = "serial0";
22 timebase-frequency = <RTCCLK_FREQ>;
31 #clock-cells = <0>;
[all …]
/linux/include/linux/mfd/
H A Dmax8998.h1 /* SPDX-License-Identifier: GPL-2.0+ */
3 * max8998.h - Voltage regulator driver for the Maxim 8998
5 * Copyright (C) 2009-2010 Samsung Electrnoics
46 * max8998_regulator_data - regulator data
49 * @reg_node: DT node of regulator (unused on non-DT platforms)
58 * struct max8998_board - packages regulator init data
68 * @buck1_default_idx: Default for BUCK1 gpio pin 1, 2
69 * @buck2_default_idx: Default for BUCK2 gpio pin.
76 * @restart: Restart Level in mV: 100, 150, 200, and -1 for disable.
79 * @timeout: Full Timeout in hours: 5, 6, 7, and -1 for disable.
[all …]
/linux/arch/arm/boot/dts/nxp/imx/
H A Dimx7d-flex-concentrator.dts1 // SPDX-License-Identifier: GPL-2.0
9 /dts-v1/;
11 #include "imx7d-tqma7.dtsi"
14 /delete-node/ &ds1339;
18 compatible = "kam,imx7d-flex-concentrator", "fsl,imx7d";
22 /* 1024 MB - TQMa7D board configuration */
26 reg_usb_otg2_vbus: regulator-usb-otg2-vbus {
27 compatible = "regulator-fixed";
28 regulator-name = "VBUS_USBOTG2";
29 regulator-min-microvolt = <5000000>;
[all …]
/linux/drivers/watchdog/
H A Dibmasr.c1 // SPDX-License-Identifier: GPL-1.0+
3 * IBM Automatic Server Restart driver.
8 * Copyright (c) IBM Corporation, 1998-2004.
154 /* SELECT AND READ THE HIGH-NIBBLE OF THE GPIO BASE ADDRESS */ in asr_get_base_address()
158 /* SELECT AND READ THE LOW-NIBBLE OF THE GPIO BASE ADDRESS */ in asr_get_base_address()
176 return -ENODEV; in asr_get_base_address()
237 return -EBUSY; in asr_get_base_address()
259 return -EFAULT; in asr_write()
282 return copy_to_user(argp, &ident, sizeof(ident)) ? -EFAULT : 0; in asr_ioctl()
288 int new_options, retval = -EINVAL; in asr_ioctl()
[all …]
/linux/arch/powerpc/platforms/52xx/
H A Dmpc52xx_common.c25 { .compatible = "fsl,mpc5200-xlb", },
26 { .compatible = "mpc5200-xlb", },
30 { .compatible = "fsl,mpc5200-immr", },
31 { .compatible = "fsl,mpc5200b-immr", },
32 { .compatible = "simple-bus", },
71 out_be32(&xlb->master_pri_enable, 0xff); in mpc5200_setup_xlb_arbiter()
72 out_be32(&xlb->master_priority, 0x11111111); in mpc5200_setup_xlb_arbiter()
77 * transaction and re-enable it afterwards ...) in mpc5200_setup_xlb_arbiter()
81 out_be32(&xlb->config, in_be32(&xlb->config) | MPC52xx_XLB_CFG_PLDIS); in mpc5200_setup_xlb_arbiter()
110 { .compatible = "fsl,mpc5200-gpt", },
[all …]
/linux/arch/arm/boot/dts/broadcom/
H A Dbcm47189-luxul-xap-1440.dts1 // SPDX-License-Identifier: GPL-2.0-or-later OR MIT
6 /dts-v1/;
11 compatible = "luxul,xap-1440-v1", "brcm,bcm47189", "brcm,bcm53573";
12 model = "Luxul XAP-1440 V1";
24 compatible = "gpio-leds";
26 led-wlan {
31 led-system {
34 linux,default-trigger = "timer";
38 gpio-keys {
39 compatible = "gpio-keys";
[all …]
H A Dbcm47189-luxul-xap-810.dts1 // SPDX-License-Identifier: GPL-2.0-or-later OR MIT
6 /dts-v1/;
11 compatible = "luxul,xap-810-v1", "brcm,bcm47189", "brcm,bcm53573";
12 model = "Luxul XAP-810 V1";
23 leds-0 {
24 compatible = "gpio-leds";
26 led-5ghz {
31 led-system {
34 linux,default-trigger = "timer";
38 leds-1 {
[all …]
H A Dbcm4709-netgear-r7000.dts1 // SPDX-License-Identifier: GPL-2.0-or-later OR MIT
9 /dts-v1/;
12 #include "bcm5301x-nand-cs0-bch8.dtsi"
29 compatible = "gpio-leds";
31 led-power-white {
34 linux,default-trigger = "default-on";
37 led-power-amber {
42 led-5ghz {
47 led-2ghz {
52 led-wps {
[all …]
H A Dbcm947189acdbmr.dts8 /dts-v1/;
26 compatible = "gpio-leds";
28 led-wps {
33 led-5ghz {
38 led-2ghz {
44 gpio-keys {
45 compatible = "gpio-keys";
47 button-restart {
53 button-wps {
61 compatible = "spi-gpio";
[all …]

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