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/linux-6.14.4/arch/arm/boot/dts/actions/
Dowl-s500.dtsi1 // SPDX-License-Identifier: (GPL-2.0+ OR MIT)
3 * Actions Semi S500 SoC
5 * Copyright (c) 2016-2017 Andreas Färber
8 #include <dt-bindings/clock/actions,s500-cmu.h>
9 #include <dt-bindings/gpio/gpio.h>
10 #include <dt-bindings/interrupt-controller/arm-gic.h>
11 #include <dt-bindings/power/owl-s500-powergate.h>
12 #include <dt-bindings/reset/actions,s500-reset.h>
15 compatible = "actions,s500";
16 interrupt-parent = <&gic>;
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/linux-6.14.4/Documentation/devicetree/bindings/serial/
Dactions,owl-uart.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/serial/actions,owl-uart.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Actions Semi Owl UART
10 - Kanak Shilledar <[email protected]>
13 - $ref: serial.yaml
18 - enum:
19 - actions,s500-uart
20 - actions,s900-uart
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/linux-6.14.4/drivers/tty/serial/
DKconfig1 # 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
89 bool "Early console using RISC-V SBI"
95 Support for early debug console using RISC-V SBI. This enables
101 tristate "BCM1xxx on-chip DUART serial support"
107 the BCM1250 and derived System-On-a-Chip (SOC) devices. Note that
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Dowl-uart.c1 // SPDX-License-Identifier: GPL-2.0+
8 * Copyright (c) 2016-2017 Andreas Färber
86 writel(val, port->membase + off); in owl_uart_write()
91 return readl(port->membase + off); in owl_uart_read()
205 port->icount.overrun++; in owl_uart_receive_chars()
209 port->icount.brk++; in owl_uart_receive_chars()
210 port->icount.frame++; in owl_uart_receive_chars()
212 stat &= port->read_status_mask; in owl_uart_receive_chars()
216 port->icount.rx++; in owl_uart_receive_chars()
223 if (!sysrq && (stat & port->ignore_status_mask) == 0) in owl_uart_receive_chars()
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/linux-6.14.4/Documentation/admin-guide/
Dkernel-parameters.txt16 force -- enable ACPI if default was off
17 on -- enable ACPI but allow fallback to DT [arm64,riscv64]
18 off -- disable ACPI if default was on
19 noirq -- do not use ACPI for IRQ routing
20 strict -- Be less tolerant of platforms that are not
22 rsdt -- prefer RSDT over (default) XSDT
23 copy_dsdt -- copy DSDT to memory
24 nocmcff -- Disable firmware first mode for corrected
28 nospcr -- disable console in ACPI SPCR table as
45 If set to vendor, prefer vendor-specific driver
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