Re: [PATCH 01/13] dt-bindings: interrupt-controller: create a header for RISC-V interrupts

Heiko Stübner
2021-11-23T11:08:17Z

Am Montag, 8. November 2021, 16:05:42 CET schrieb conor.dooley@microchip.com:
> From: Ivan Griffin <ivan.griffin@microchip.com>
>
> Provide named identifiers for device tree for RISC-V interrupts.
>
> Licensed under GPL and MIT, as this file may be useful to any OS that
> uses device tree.
>
> Signed-off-by: Ivan Griffin <ivan.griffin@microchip.com>
> Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
> ---
> .../interrupt-controller/riscv-hart.h | 19 +++++++++++++++++++
> 1 file changed, 19 insertions(+)
> create mode 100644 include/dt-bindings/interrupt-controller/riscv-hart.h
>
> diff --git a/include/dt-bindings/interrupt-controller/riscv-hart.h b/include/dt-bindings/interrupt-controller/riscv-hart.h
> new file mode 100644
> index 000000000000..e1c32f6090ac
> --- /dev/null
> +++ b/include/dt-bindings/interrupt-controller/riscv-hart.h
> @@ -0,0 +1,19 @@
> +/* SPDX-License-Identifier: (GPL-2.0 OR MIT) */
> +/*
> + * Copyright (C) 2021 Microchip Technology Inc. All rights reserved.
> + */
> +
> +#ifndef _DT_BINDINGS_INTERRUPT_CONTROLLER_RISCV_HART_H
> +#define _DT_BINDINGS_INTERRUPT_CONTROLLER_RISCV_HART_H
> +
> +#define HART_INT_U_SOFT 0
> +#define HART_INT_S_SOFT 1
> +#define HART_INT_M_SOFT 3
> +#define HART_INT_U_TIMER 4
> +#define HART_INT_S_TIMER 5
> +#define HART_INT_M_TIMER 7
> +#define HART_INT_U_EXT 8
> +#define HART_INT_S_EXT 9
> +#define HART_INT_M_EXT 11

(1) From checking clic doc [0] I see an additional
12 CLIC software interrupt
defined.

(2) The doc states that the ordering is a recommendation and
"not mandatory in all incarnations of the CLIC"
Is that clarified somewhere else that this more than recommended?

Thanks
Heiko

[0] https://github.com/riscv/riscv-fast-interrupt/blob/master/clic.adoc

> +
> +#endif /* _DT_BINDINGS_INTERRUPT_CONTROLLER_RISCV_HART_H */
>