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/linux/Documentation/devicetree/bindings/serial/
H A Drs485.yaml1 # SPDX-License-Identifier: GPL-2.0
3 ---
4 $id: http://devicetree.org/schemas/serial/rs485.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: RS485 serial communications
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>
[all …]
/linux/arch/arm/boot/dts/nxp/imx/
H A Dimx6qdl-dhcom-drc02.dtsi1 // SPDX-License-Identifier: GPL-2.0+
8 stdout-path = "serial0:115200n8";
14 * pins SD3_DAT0 and SD3_DAT1 are muxed as can2 Tx and Rx. The signals for can2
15 * Tx and Rx are routed to the DHCOM UART1 rts/cts pins. Therefore the micro SD
26 * GPIO line, however the i.MX6 UART driver assumes RX happens
27 * during TX anyway and that it only controls drive enable DE
28 * line. Hence, the RX is always enabled here.
30 rs485-rx-en-hog {
31 gpio-hog;
33 line-name = "rs485-rx-en";
[all …]
H A Dimx6ull-dhcom-drc02.dts1 // SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
6 * DHCM-iMX6ULL-C080-R051-F0409-SPI-E2-CAN2-SD-RTC-ADC-I-01D2
7 * DHCOR PCB number: 578-200 or newer
8 * DHCOM PCB number: 579-200 or newer
9 * DRC02 PCB number: 568-100 or newer (2nd ethernet by SoM)
11 /dts-v1/;
13 #include "imx6ull-dhcom-som.dtsi"
14 #include "imx6ull-dhcom-som-cfg-sdcard.dtsi"
18 compatible = "dh,imx6ull-dhcom-drc02", "dh,imx6ull-dhcom-som",
19 "dh,imx6ull-dhcor-som", "fsl,imx6ull";
[all …]
H A Dimx6ul-kontron-bl-common.dtsi1 // SPDX-License-Identifier: GPL-2.0
8 #include <dt-bindings/gpio/gpio.h>
11 gpio-leds {
12 compatible = "gpio-leds";
13 pinctrl-names = "default";
14 pinctrl-0 = <&pinctrl_gpio_leds>;
17 label = "debug-led1";
19 default-state = "off";
20 linux,default-trigger = "heartbeat";
24 label = "debug-led2";
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H A Dimx7-mba7.dtsi1 // SPDX-License-Identifier: GPL-2.0 OR X11
3 * Device Tree Include file for TQ-Systems MBa7 carrier board.
5 * Copyright (C) 2016 TQ-Systems GmbH
6 * Author: Markus Niebel <Markus.Niebel@tq-group.com>
13 #include <dt-bindings/input/input.h>
14 #include <dt-bindings/net/ti-dp83867.h>
20 /delete-property/ mmc2;
26 compatible = "gpio-beeper";
31 stdout-path = &uart6;
34 gpio_buttons: gpio-keys {
[all …]
H A Dmba6ulx.dtsi1 // SPDX-License-Identifier: (GPL-2.0-or-later OR MIT)
3 * Copyright 2018-2022 TQ-Systems GmbH
4 * Author: Markus Niebel <Markus.Niebel@tq-group.com>
8 model = "TQ-Systems MBA6ULx Baseboard";
18 stdout-path = &uart1;
22 compatible = "pwm-backlight";
23 power-supply = <&reg_mba6ul_3v3>;
24 enable-gpios = <&expander_out0 4 GPIO_ACTIVE_HIGH>;
29 compatible = "gpio-beeper";
33 gpio_buttons: gpio-keys {
[all …]
H A Dimx6qdl-mba6.dtsi1 // SPDX-License-Identifier: GPL-2.0-only
5 * Copyright 2013-2021 TQ-Systems GmbH
6 * Author: Markus Niebel <Markus.Niebel@tq-group.com>
9 #include <dt-bindings/clock/imx6qdl-clock.h>
10 #include <dt-bindings/gpio/gpio.h>
11 #include <dt-bindings/input/input.h>
12 #include <dt-bindings/sound/fsl-imx-audmux.h>
18 /delete-property/ mmc2;
19 /delete-property/ mmc3;
24 stdout-path = &uart2;
[all …]
H A Dimx6q-bosch-acc.dts1 // SPDX-License-Identifier: GPL-2.0
3 * Support for the i.MX6-based Bosch ACC board.
8 * Copyright (C) 2019-2021 Bosch Thermotechnik GmbH, Matthias Winker <matthias.winker@bosch.com>
12 /dts-v1/;
14 #include <dt-bindings/gpio/gpio.h>
15 #include <dt-bindings/leds/common.h>
20 compatible = "bosch,imx6q-acc", "fsl,imx6q";
37 backlight_lvds: backlight-lvds {
38 compatible = "pwm-backlight";
40 brightness-levels = <0 61 499 1706 4079 8022 13938 22237 33328 47623 65535>;
[all …]
/linux/arch/arm/boot/dts/ti/omap/
H A Dam335x-nano.dts1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright (C) 2013 Newflow Ltd - https://www.newflow.co.uk/
5 /dts-v1/;
15 cpu0-supply = <&dcdc2_reg>;
25 compatible = "gpio-leds";
30 default-state = "off";
36 pinctrl-names = "default";
37 pinctrl-0 = <&misc_pins>;
39 misc_pins: misc-pins {
40 pinctrl-single,pins = <
[all …]
/linux/arch/arm64/boot/dts/freescale/
H A Dimx8mm-verdin-dev.dtsi1 // SPDX-License-Identifier: GPL-2.0-or-later OR MIT
7 sound_card: sound-card {
8 compatible = "simple-audio-card";
9 simple-audio-card,bitclock-master = <&dailink_master>;
10 simple-audio-card,format = "i2s";
11 simple-audio-card,frame-master = <&dailink_master>;
12 simple-audio-card,mclk-fs = <256>;
13 simple-audio-card,name = "verdin-nau8822";
14 simple-audio-card,routing =
25 simple-audio-card,widgets =
[all …]
H A Dimx8mp-verdin-dev.dtsi1 // SPDX-License-Identifier: GPL-2.0-or-later OR MIT
7 native-hdmi-connector {
8 compatible = "hdmi-connector";
14 remote-endpoint = <&hdmi_tx_out>;
19 reg_eth2phy: regulator-eth2phy {
20 compatible = "regulator-fixed";
21 enable-active-high;
23 off-on-delay-us = <500000>;
24 regulator-max-microvolt = <3300000>;
25 regulator-min-microvolt = <3300000>;
[all …]
H A Dimx8mp-toradex-smarc-dev.dts1 // SPDX-License-Identifier: GPL-2.0-or-later OR MIT
4 /dts-v1/;
6 #include <dt-bindings/pwm/pwm.h>
8 #include "imx8mp-toradex-smarc.dtsi"
12 compatible = "toradex,smarc-imx8mp-dev",
13 "toradex,smarc-imx8mp",
16 hdmi-connector {
17 compatible = "hdmi-connector";
23 remote-endpoint = <&hdmi_tx_out>;
28 reg_carrier_1p8v: regulator-carrier-1p8v {
[all …]
/linux/drivers/tty/serial/
H A Damba-pl011.c1 // SPDX-License-Identifier: GPL-2.0+
9 * Copyright (C) 2010 ST-Ericsson SA
11 * This is a generic driver for ARM AMBA-type serial ports. They
12 * have a lot of 16550-like features, but are not register compatible.
35 #include <linux/dma-mapping.h>
82 /* The size of the array - must be last */
268 unsigned int fifosize; /* vendor-specific */
269 unsigned int fixed_baud; /* vendor-set fixed baud rate */
292 return uap->reg_offset[reg]; in pl011_reg_to_offset()
298 void __iomem *addr = uap->port.membase + pl011_reg_to_offset(uap, reg); in pl011_read()
[all …]
H A Dimx.c1 // SPDX-License-Identifier: GPL-2.0+
31 #include <linux/dma-mapping.h>
34 #include <linux/dma/imx-dma.h>
126 #define UFCR_RFDIV_REG(x) (((x) < 7 ? 6 - (x) : 6) << 7)
155 #define UTS_LOOP (1<<12) /* Loop tx and rx */
162 /* We've been assigned a range on the "Low-density serial ports" major */
171 * filling the TX fifo incase CTS has been dropped.
175 #define DRIVER_NAME "IMX-uart"
259 * compatible to fsl,imx6q-uart, but not fsl,imx21-uart, while the
260 * original imx6q's UART is compatible to fsl,imx21-uart. This driver
[all …]
H A Datmel_serial.c1 // SPDX-License-Identifier: GPL-2.0+
18 #include <linux/clk-provider.h>
24 #include <linux/dma-mapping.h>
46 * These two offsets are substracted from the RX FIFO size to define the RTS
62 /* Use device name ttyAT, major 204 and minor 154-169. This is necessary if we
71 /* Use device name ttyS, major 4, minor 64-68. This is the usual serial port
117 u32 backup_imr; /* IMR saved during suspend */
122 short pdc_rx_idx; /* current PDC RX buffer */
148 u32 backup_mode; /* MR saved during iso7816 operations */
149 u32 backup_brgr; /* BRGR saved during iso7816 operations */
[all …]
H A Dserial_core.c1 // SPDX-License-Identifier: GPL-2.0+
8 * Copyright (C) 2000-2001 Deep Blue Solutions Ltd.
43 * lockdep: port->lock is initialized in two places, but we
44 * want only one lock-class:
48 #define HIGH_BITS_OFFSET ((sizeof(long)-sizeof(int))*8)
62 return !!(uport->status & UPSTAT_DCD_ENABLE); in uart_dcd_enabled()
67 if (atomic_add_unless(&state->refcount, 1, 0)) in uart_port_ref()
68 return state->uart_port; in uart_port_ref()
74 if (atomic_dec_and_test(&uport->state->refcount)) in uart_port_deref()
75 wake_up(&uport->state->remove_wait); in uart_port_deref()
[all …]
H A Dsc16is7xx.c1 // SPDX-License-Identifier: GPL-2.0+
3 * SC16IS7xx tty serial driver - common code
40 #define SC16IS7XX_RHR_REG (0x00) /* RX FIFO */
41 #define SC16IS7XX_THR_REG (0x00) /* TX FIFO */
50 #define SC16IS7XX_TXLVL_REG (0x08) /* TX FIFO level */
51 #define SC16IS7XX_RXLVL_REG (0x09) /* RX FIFO level */
53 * - only on 75x/76x
56 * - only on 75x/76x
59 * - only on 75x/76x
62 * - only on 75x/76x
[all …]
H A Domap-serial.c1 // SPDX-License-Identifier: GPL-2.0+
3 * Driver for OMAP-UART controller.
16 * this driver as required for the omap-platform.
38 #include <linux/platform_data/serial-omap.h>
79 #define OMAP_UART_DMA_CH_FREE -1
108 * Buffer for rx dma. It is not required for tx because the buffer
118 /* timer to poll activity on rx dma */
176 offset <<= up->port.regshift; in serial_in()
177 return readw(up->port.membase + offset); in serial_in()
182 offset <<= up->port.regshift; in serial_out()
[all …]
H A Dfsl_lpuart.c1 // SPDX-License-Identifier: GPL-2.0+
5 * Copyright 2012-2014 Freescale Semiconductor, Inc.
14 #include <linux/dma-mapping.h>
30 /* All registers are 8-bit width */
119 /* 32-bit global registers only for i.MX7ULP/i.MX8x
124 /* 32-bit register definition */
241 /* Rx DMA timeout in ms, which is used to calculate Rx ring buffer size */
246 #define DRIVER_NAME "fsl-lpuart"
349 { .compatible = "fsl,vf610-lpuart", .data = &vf_data, },
350 { .compatible = "fsl,ls1021a-lpuart", .data = &ls1021a_data, },
[all …]
/linux/arch/arm64/boot/dts/ti/
H A Dk3-am62p-verdin-dev.dtsi1 // SPDX-License-Identifier: GPL-2.0-or-later OR MIT
7 * https://www.toradex.com/computer-on-modules/verdin-arm-family/ti-am62p
8 * https://www.toradex.com/products/carrier-board/verdin-development-board-kit
17 compatible = "simple-audio-card";
18 simple-audio-card,bitclock-master = <&codec_dai>;
19 simple-audio-card,format = "i2s";
20 simple-audio-card,frame-master = <&codec_dai>;
21 simple-audio-card,mclk-fs = <256>;
22 simple-audio-card,name = "verdin-nau8822";
23 simple-audio-card,routing =
[all …]
H A Dk3-am62-verdin-dev.dtsi1 // SPDX-License-Identifier: GPL-2.0-or-later OR MIT
7 * https://www.toradex.com/computer-on-modules/verdin-arm-family/ti-am62
8 * https://www.toradex.com/products/carrier-board/verdin-development-board-kit
13 compatible = "simple-audio-card";
14 simple-audio-card,bitclock-master = <&codec_dai>;
15 simple-audio-card,format = "i2s";
16 simple-audio-card,frame-master = <&codec_dai>;
17 simple-audio-card,mclk-fs = <256>;
18 simple-audio-card,name = "verdin-nau8822";
19 simple-audio-card,routing =
[all …]
H A Dk3-am62p-verdin-ivy.dtsi1 // SPDX-License-Identifier: GPL-2.0-or-later OR MIT
7 * https://www.toradex.com/computer-on-modules/verdin-arm-family/ti-am62p
8 * https://www.toradex.com/products/carrier-board/ivy-carrier-board
11 #include <dt-bindings/mux/mux.h>
12 #include <dt-bindings/leds/common.h>
13 #include <dt-bindings/net/ti-dp83867.h>
21 ain1_voltage_unmanaged: voltage-divider-ain1 {
22 compatible = "voltage-divider";
23 #io-channel-cells = <1>;
24 io-channels = <&ivy_adc1 0>;
[all …]
/linux/drivers/tty/serial/8250/
H A D8250_port.c1 // SPDX-License-Identifier: GPL-2.0+
3 * Base port operations for 8250/16550-type serial ports
244 * tx_loadsz is set to 63-bytes instead of 64-bytes to implement
245 * workaround of errata A-008006 which states that tx_loadsz should
257 .name = "Palmchip BK-3103",
344 offset = offset << p->regshift; in hub6_serial_in()
345 outb(p->hub6 - 1 + offset, p->iobase); in hub6_serial_in()
346 return inb(p->iobase + 1); in hub6_serial_in()
351 offset = offset << p->regshift; in hub6_serial_out()
352 outb(p->hub6 - 1 + offset, p->iobase); in hub6_serial_out()
[all …]
/linux/Documentation/firmware-guide/acpi/
H A Denumeration.rst1 .. SPDX-License-Identifier: GPL-2.0
13 that are accessed through memory-mapped registers.
15 In order to support this and re-use the existing drivers as much as
18 - Devices that have no bus connector resource are represented as
21 - Devices behind real busses where there is a connector resource
34 This means that when ACPI_HANDLE(dev) returns non-NULL the device was
36 device-specific configuration. There is an example of this below.
43 for the device and add supported ACPI IDs. If this same IP-block is used on
44 some other non-ACPI platform, the driver might work out of the box or needs
163 to a specific FixedDMA resource. By default "tx" means the first entry of the
[all …]
/linux/include/linux/
H A Dserial_core.h1 /* SPDX-License-Identifier: GPL-2.0-or-later */
25 ((port)->cons && (port)->cons->index == (port)->line)
37 * struct uart_ops -- interface between serial_core and the driver
58 * - %TIOCM_RTS RTS signal.
59 * - %TIOCM_DTR DTR signal.
60 * - %TIOCM_OUT1 OUT1 signal.
61 * - %TIOCM_OUT2 OUT2 signal.
62 * - %TIOCM_LOOP Set the port into loopback mode.
68 * Locking: @port->lock taken.
78 * - %TIOCM_CAR state of DCD signal
[all …]

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