| /linux-6.8/drivers/tty/serial/8250/ |
| D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0
3 # The 8250/16550 serial drivers. You shouldn't be in this list unless
8 tristate "8250/16550 and compatible serial support"
23 non-standard serial ports, since the configuration information will
51 If you did not notice yet and/or you have userspace from pre-3.7, it
55 bool "8250/16550 PNP device support" if EXPERT
63 bool "Support for variants of the 16550A serial port"
67 The 8250 driver can probe for many variants of the venerable 16550A
78 capabilities of the Fintek F81216A LPC to 4 UART as well similar
82 standard 16550A serial port, however the device may not function
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| D | 8250_of.c | 1 // SPDX-License-Identifier: GPL-2.0+
36 struct device *dev = &ofdev->dev; in of_platform_serial_setup()
37 struct device_node *np = dev->of_node; in of_platform_serial_setup()
38 struct uart_port *port = &up->port; in of_platform_serial_setup()
44 pm_runtime_enable(&ofdev->dev); in of_platform_serial_setup()
45 pm_runtime_get_sync(&ofdev->dev); in of_platform_serial_setup()
47 if (of_property_read_u32(np, "clock-frequency", &clk)) { in of_platform_serial_setup()
50 info->clk = devm_clk_get_enabled(dev, NULL); in of_platform_serial_setup()
51 if (IS_ERR(info->clk)) { in of_platform_serial_setup()
52 ret = dev_err_probe(dev, PTR_ERR(info->clk), "failed to get clock\n"); in of_platform_serial_setup()
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| D | 8250_core.c | 1 // SPDX-License-Identifier: GPL-2.0+
3 * Universal/legacy driver for 8250/16550-type serial ports
9 * Supports: ISA-compatible 8250/16550 ports
10 * PNP 8250/16550 ports
12 * userspace-configurable "phantom" ports
48 * share_irqs - whether we pass IRQF_SHARED to request_irq(). This option
49 * is unsafe when used on edge-triggered interrupts.
63 * SERIAL_PORT_DFNS tells us about built-in ports that have no
104 * line has been de-asserted.
117 spin_lock(&i->lock); in serial8250_interrupt()
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| D | 8250_ingenic.c | 1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (C) 2010 Lars-Peter Clausen <lars@metafoo.de>
6 * Ingenic SoC UART support
46 return readl(port->membase + (offset << 2)); in early_in()
51 writel(value, port->membase + (offset << 2)); in early_out()
68 uart_console_write(&early_device->port, s, count, in ingenic_early_console_write()
82 prop = fdt_getprop(fdt, offset, "clock-frequency", NULL); in ingenic_early_console_setup_clock()
86 dev->port.uartclk = be32_to_cpup(prop); in ingenic_early_console_setup_clock()
92 struct uart_port *port = &dev->port; in ingenic_earlycon_setup_tail()
96 if (!dev->port.membase) in ingenic_earlycon_setup_tail()
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| D | 8250_port.c | 1 // SPDX-License-Identifier: GPL-2.0+
3 * Base port operations for 8250/16550-type serial ports
55 * Here we define the default xmit fifo size used for each type of UART.
74 .name = "16550",
79 .name = "16550A",
224 .name = "Altera 16550 FIFO32",
232 .name = "Altera 16550 FIFO64",
240 .name = "Altera 16550 FIFO128",
248 * tx_loadsz is set to 63-bytes instead of 64-bytes to implement
249 * workaround of errata A-008006 which states that tx_loadsz should
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| D | 8250_men_mcb.c | 1 // SPDX-License-Identifier: GPL-2.0
16 * IP Cores Z025 and Z057 can have up to 4 UART
22 * +------+-------+-------+-------+-------+-------+-------+-------+
24 * +------+-------+-------+-------+-------+-------+-------+-------+
54 * The Z125 16550-compatible UART has no fixed base clock assigned
64 dev_info(&mdev->dev, "%s on board %s\n", in men_lookup_uartclk()
65 dev_name(&mdev->dev), in men_lookup_uartclk()
66 mdev->bus->name); in men_lookup_uartclk()
67 if (strncmp(mdev->bus->name, "F075", 4) == 0) in men_lookup_uartclk()
69 else if (strncmp(mdev->bus->name, "F216", 4) == 0) in men_lookup_uartclk()
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| D | 8250_pnp.c | 1 // SPDX-License-Identifier: GPL-2.0
3 * Probe for 8250/16550-type ISAPNP serial ports.
9 * Ported to the Linux PnP Layer - (C) Adam Belay.
44 * Native driver (ali-ircc) is broken so at least
45 * it can be used with irtty-sir.
53 /* Boca Complete Ofc Communicator 14.4 Data-FAX */
60 /* EuroViVa CommCenter-33.6 SP PnP */
70 /* Creative Modem Blaster Flash56 DI5601-1 */
74 /* E-Tech */
75 /* E-Tech CyberBULLET PC56RVP */
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| D | 8250_dw.c | 1 // SPDX-License-Identifier: GPL-2.0+
10 * raised, the LCR needs to be rewritten and the uart status register read.
36 #define DW_UART_USR 0x1f /* UART Status Register */
39 #define OCTEON_UART_USR 0x27 /* UART Status Register */
72 struct dw8250_data *d = to_dw8250_data(p->private_data); in dw8250_modify_msr()
76 value |= d->msr_mask_on; in dw8250_modify_msr()
77 value &= ~d->msr_mask_off; in dw8250_modify_msr()
95 if (up->fcr & UART_FCR_ENABLE_FIFO) { in dw8250_force_idle()
96 lsr = p->serial_in(p, UART_LSR); in dw8250_force_idle()
101 (void)p->serial_in(p, UART_RX); in dw8250_force_idle()
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| /linux-6.8/Documentation/devicetree/bindings/serial/ |
| D | 8250.yaml | 3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: UART (Universal Asynchronous Receiver/Transmitter)
10 - devicetree@vger.kernel.org
13 - $ref: serial.yaml#
14 - $ref: /schemas/memory-controllers/mc-peripheral-props.yaml#
15 - if:
17 - required:
18 - aspeed,lpc-io-reg
19 - required:
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| D | mediatek,uart.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/serial/mediatek,uart.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: MediaTek Universal Asynchronous Receiver/Transmitter (UART)
10 - Matthias Brugger <matthias.bgg@gmail.com>
13 - $ref: serial.yaml#
16 The MediaTek UART is based on the basic 8250 UART and compatible
17 with 16550A, with enhancements for high speed baud rates and
21 compatible:
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| D | snps-dw-apb-uart.yaml | 1 # SPDX-License-Identifier: GPL-2.0
3 ---
4 $id: http://devicetree.org/schemas/serial/snps-dw-apb-uart.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Synopsys DesignWare ABP UART
10 - Rob Herring <robh@kernel.org>
13 - $ref: serial.yaml#
14 - $ref: rs485.yaml#
17 compatible:
19 - items:
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| /linux-6.8/arch/mips/ |
| D | Kconfig.debug | 1 # SPDX-License-Identifier: GPL-2.0
22 "8250/16550 and compatible serial early printk driver"
23 If you say Y here, it will be possible to use a 8250/16550 serial
30 bool "Built-in kernel command line"
41 The built-in options will be concatenated to the default command
43 command line will be ignored and replaced by the built-in string.
46 the command line from the firmware or the second-stage bootloader.
55 the default command line, you can supply some command-line options at
64 bool "Built-in command line overrides firmware arguments"
69 Instead, the built-in command line will be used exclusively.
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| /linux-6.8/arch/powerpc/ |
| D | Kconfig.debug | 1 # SPDX-License-Identifier: GPL-2.0
4 bool "Don't build arch/powerpc code with -Werror"
7 arch/powerpc with the -Werror flag (which means warnings
47 emulated by the in-kernel emulator. Counters for the various classes
51 powerpc/emulated_instructions/do_warn in debugfs), rate-limited
56 bool "Run self-tests of the code-patching code"
78 bool "Run self-tests of the feature-fixup code"
82 bool "Run self-tests of the MSI bitmap code"
110 Include in-kernel hooks for the xmon kernel monitor/debugger.
135 to say Y here, unless you're building for a memory-constrained
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| /linux-6.8/Documentation/devicetree/bindings/ |
| D | xilinx.txt | 10 Each IP-core has a set of parameters which the FPGA designer can use to
20 properties of the device node. In general, device nodes for IP-cores
23 (name): (generic-name)@(base-address) {
24 compatible = "xlnx,(ip-core-name)-(HW_VER)"
25 [, (list of compatible devices), ...];
27 interrupt-parent = <&interrupt-controller-phandle>;
29 xlnx,(parameter1) = "(string-value)";
30 xlnx,(parameter2) = <(int-value)>;
33 (generic-name): an open firmware-style name that describes the
36 (ip-core-name): the name of the ip block (given after the BEGIN
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| /linux-6.8/arch/mips/boot/compressed/ |
| D | dbg.c | 1 // SPDX-License-Identifier: GPL-2.0
3 * MIPS-specific debug support for pre-boot environment
5 * NOTE: putc() is board specific, if your board have a 16550 compatible uart,
33 for (i = 7; i >= 0; i--) { in puthex()
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| D | uart-16550.c | 1 // SPDX-License-Identifier: GPL-2.0
3 * 16550 compatible uart based serial debug support for zboot
43 while (((serial_in(UART_LSR) & UART_LSR_THRE) == 0) && (timeout-- > 0)) in putc()
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| /linux-6.8/Documentation/sound/cards/ |
| D | serial-u16550.rst | 2 Serial UART 16450/16550 MIDI driver
7 * 0 - Roland Soundcanvas support (default)
8 * 1 - Midiator MS-124T support (1)
9 * 2 - Midiator MS-124W S/A mode (2)
10 * 3 - MS-124W M/B mode support (3)
11 * 4 - Generic device with multiple input support (4)
13 For the Midiator MS-124W, you must set the physical M-S and A-B
17 (midiCnD0-midiCnD15). Whenever you write to a different substream, the driver
27 /sbin/setserial /dev/ttyS0 uart none
28 /sbin/modprobe snd-serial-u16550 port=0x3f8 irq=4 speed=115200
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| /linux-6.8/drivers/acpi/ |
| D | acpi_apd.c | 1 // SPDX-License-Identifier: GPL-2.0-only
12 #include <linux/clk-provider.h>
15 #include <linux/platform_data/clk-fch.h>
23 * struct apd_device_desc - a descriptor for apd device
26 * @properties: build-in properties of the device such as UART
48 const struct apd_device_desc *dev_desc = pdata->dev_desc; in acpi_apd_setup()
51 if (dev_desc->fixed_clk_rate) { in acpi_apd_setup()
52 clk = clk_register_fixed_rate(&pdata->adev->dev, in acpi_apd_setup()
53 dev_name(&pdata->adev->dev), in acpi_apd_setup()
54 NULL, 0, dev_desc->fixed_clk_rate); in acpi_apd_setup()
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| /linux-6.8/Documentation/networking/device_drivers/hamradio/ |
| D | baycom.rst | 1 .. SPDX-License-Identifier: GPL-2.0
25 however if you have a broken UART clone that does not have working
32 does not work with your UART.
41 This driver is work-in-progress.
52 driver only supports standard serial hardware (8250, 16450, 16550)
54 par96 This is a modem for 9600 baud FSK compatible to the G3RUH standard.
64 is protocol compatible to par96, but uses only three low power ICs
69 EPP This is a high-speed modem adaptor that connects to an enhanced parallel
90 simple. Once installed, four interfaces named bc{sf,sh,p,e}[0-3] are available.
110 sethdlc -i bcsf0 -p mode "ser12*" io 0x3f8 irq 4
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| /linux-6.8/sound/drivers/ |
| D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0-only
50 tristate "PC-Speaker support (READ HELP!)"
60 You can compile this as a module which will be called snd-pcsp.
65 pc-speaker a default sound device. Which is likely not
69 options snd-pcsp index=2
71 You don't need this driver if you only want your pc-speaker to beep.
90 will be called snd-dummy.
99 the standard ALSA PCM device. The devices are routed 0->1 and
100 1->0, where first number is the playback PCM device and second
106 timing source using the time shift universal control (+-20%
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| /linux-6.8/drivers/mfd/ |
| D | intel-lpss-acpi.c | 1 // SPDX-License-Identifier: GPL-2.0-only
25 #include "intel-lpss.h"
28 PROPERTY_ENTRY_U32("intel,spi-pxa2xx-type", LPSS_SPT_SSP),
42 PROPERTY_ENTRY_U32("i2c-sda-hold-time-ns", 230),
56 PROPERTY_ENTRY_U32("reg-io-width", 4),
57 PROPERTY_ENTRY_U32("reg-shift", 2),
58 PROPERTY_ENTRY_BOOL("snps,uart-16550-compatible"),
73 PROPERTY_ENTRY_U32("intel,spi-pxa2xx-type", LPSS_BXT_SSP),
87 PROPERTY_ENTRY_U32("i2c-sda-hold-time-ns", 42),
88 PROPERTY_ENTRY_U32("i2c-sda-falling-time-ns", 171),
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| /linux-6.8/arch/mips/loongson32/common/ |
| D | platform.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Copyright (c) 2011-2016 Zhang, Keguang <keguang.zhang@gmail.com>
7 #include <linux/dma-mapping.h>
19 /* 8250/16550 compatible UART */
50 clk = clk_get(&pdev->dev, pdev->name); in ls1x_serial_set_uartclk()
53 pdev->name, PTR_ERR(clk)); in ls1x_serial_set_uartclk()
58 for (p = pdev->dev.platform_data; p->flags != 0; ++p) in ls1x_serial_set_uartclk()
59 p->uartclk = clk_get_rate(clk); in ls1x_serial_set_uartclk()
79 plat_dat = dev_get_platdata(&pdev->dev); in ls1x_eth_mux_init()
80 if (plat_dat->bus_id) { in ls1x_eth_mux_init()
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| /linux-6.8/drivers/tty/serial/ |
| D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0
19 comment "Non-8250 serial port support"
26 This selects the ARM(R) AMBA(R) PrimeCell PL010 UART. If you have
37 Say Y here if you wish to use an AMBA PrimeCell UART as the system
53 This selects the ARM(R) AMBA(R) PrimeCell PL011 UART. If you have
65 Say Y here if you wish to use an AMBA PrimeCell UART as the system
77 bool "Early console using Arm compatible semihosting"
83 Support for early debug console using Arm compatible semihosting.
89 bool "Early console using RISC-V SBI"
95 Support for early debug console using RISC-V SBI. This enables
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| D | sunsu.c | 1 // SPDX-License-Identifier: GPL-2.0
6 * Copyright (C) 1998-1999 Pete Zaitcev (zaitcev@yahoo.com)
13 * Theodore Ts'o <tytso@mit.edu>, 2001-Oct-12
15 * Converted to new 2.5.x UART layer.
16 * David S. Miller (davem@davemloft.net), 2002-Jul-29
51 * in a UART clock of 1.8462 MHz.
65 * Here we define the default xmit fifo size used for each type of UART.
71 { "16550", 1, 0 },
72 { "16550A", 16, UART_CLEAR_FIFO | UART_USE_FIFO },
106 offset <<= up->port.regshift; in serial_in()
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| /linux-6.8/Documentation/devicetree/bindings/soc/ti/ |
| D | ti,pruss.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
8 TI Programmable Real-Time Unit and Industrial Communication Subsystem
11 - Suman Anna <s-anna@ti.com>
15 The Programmable Real-Time Unit and Industrial Communication Subsystem
16 (PRU-ICSS a.k.a. PRUSS) is present on various TI SoCs such as AM335x, AM437x,
17 Keystone 66AK2G, OMAP-L138/DA850 etc. A PRUSS consists of dual 32-bit RISC
18 cores (Programmable Real-Time Units, or PRUs), shared RAM, data and
23 peripheral interfaces, fast real-time responses, or specialized data handling.
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