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From: Andrew Jones <ajones@ventanamicro.com>
To: Song Shuai <songshuaishuai@tinylab.org>
Cc: paul.walmsley@sifive.com, palmer@dabbelt.com,
	aou@eecs.berkeley.edu,  conor@kernel.org, suagrfillet@gmail.com,
	linux-riscv@lists.infradead.org,  linux-kernel@vger.kernel.org
Subject: Re: [PATCH] riscv: Enable ARCH_SUSPEND_POSSIBLE for s2idle
Date: Mon, 29 May 2023 15:08:25 +0200	[thread overview]
Message-ID: <20230529-635a440721fd4e1305cbc9c9@orel> (raw)
In-Reply-To: <20230529101524.322076-1-songshuaishuai@tinylab.org>

On Mon, May 29, 2023 at 06:15:24PM +0800, Song Shuai wrote:
> With this configuration opened, the basic platform-independent s2idle is
> provided by the sole "s2idle" string in `/sys/power/mem_sleep`.
> 
> At the end of s2idle, harts will hit the `wfi` instruction or enter the
> SUSPENDED state through the sbi_cpuidle driver. The interrupt of possible
> wakeup devices will be kept to wake the system up.
> 
> And platform-specific sleep states can be provided by future ACPI and
> SBI SUSP extension support.
> 
> Signed-off-by: Song Shuai <songshuaishuai@tinylab.org>
> ---
>  arch/riscv/Kconfig | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
> index 348c0fa1fc8c..4bb818035585 100644
> --- a/arch/riscv/Kconfig
> +++ b/arch/riscv/Kconfig
> @@ -805,6 +805,9 @@ config ARCH_HIBERNATION_POSSIBLE
>  config ARCH_HIBERNATION_HEADER
>  	def_bool HIBERNATION
>  
> +config ARCH_SUSPEND_POSSIBLE
> +	def_bool y
> +
>  endmenu # "Power management options"
>  
>  menu "CPU Power Management"
> -- 
> 2.20.1
>

Reviewed-by: Andrew Jones <ajones@ventanamicro.com>

Thanks,
drew

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  reply	other threads:[~2023-05-29 13:08 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-05-29 10:15 [PATCH] riscv: Enable ARCH_SUSPEND_POSSIBLE for s2idle Song Shuai
2023-05-29 13:08 ` Andrew Jones [this message]
2023-07-05 23:38 ` Palmer Dabbelt
2023-07-05 23:50 ` patchwork-bot+linux-riscv

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