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/Documentation/devicetree/bindings/watchdog/
Dxlnx,xps-timebase-wdt.yaml1 # SPDX-License-Identifier: GPL-2.0-or-later OR BSD-2-Clause
3 ---
4 $id: http://devicetree.org/schemas/watchdog/xlnx,xps-timebase-wdt.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Shubhrajyoti Datta <shubhrajyoti.datta@amd.com>
11 - Srinivas Neeli <srinivas.neeli@amd.com>
14 The Timebase watchdog timer(WDT) is a free-running 32 bit counter.
15 WDT uses a dual-expiration architecture. After one expiration of
22 - $ref: watchdog.yaml#
27 - xlnx,xps-timebase-wdt-1.01.a
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/Documentation/devicetree/bindings/timer/
Dsifive,clint.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Palmer Dabbelt <palmer@dabbelt.com>
11 - Anup Patel <anup.patel@wdc.com>
14 SiFive (and other RISC-V) SOCs include an implementation of the SiFive
15 Core Local Interruptor (CLINT) for M-mode timer and M-mode inter-processor
16 interrupts. It directly connects to the timer and inter-processor interrupt
17 lines of various HARTs (or CPUs) so RISC-V per-HART (or per-CPU) local
19 The clock frequency of CLINT is specified via "timebase-frequency" DT
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Driscv,timer.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: RISC-V timer
10 - Anup Patel <anup@brainfault.org>
13 RISC-V platforms always have a RISC-V timer device for the supervisor-mode
14 based on the time CSR defined by the RISC-V privileged specification. The
15 timer interrupts of this device are configured using the RISC-V SBI Time
16 extension or the RISC-V Sstc extension.
18 The clock frequency of RISC-V timer device is specified via the
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/Documentation/devicetree/bindings/riscv/
Dcpus.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR MIT)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: RISC-V CPUs
10 - Paul Walmsley <paul.walmsley@sifive.com>
11 - Palmer Dabbelt <palmer@sifive.com>
12 - Conor Dooley <conor@kernel.org>
15 This document uses some terminology common to the RISC-V community
19 mandated by the RISC-V ISA: a PC and some registers. This
27 - $ref: /schemas/cpu.yaml#
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/Documentation/ABI/testing/
Dsysfs-timecard24 IRIG adjustments from external IRIG-B signal
42 IRIG signal is sent to the IRIG-B module
44 FREQ1 signal is sent to frequency counter 1
45 FREQ2 signal is sent to frequency counter 2
46 FREQ3 signal is sent to frequency counter 3
47 FREQ4 signal is sent to frequency counter 4
62 IRIG output is from the PHC, in IRIG-B format
64 GEN1 output is from frequency generator 1
65 GEN2 output is from frequency generator 2
66 GEN3 output is from frequency generator 3
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