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| author | Song Shuai <songshuaishuai@tinylab.org> | 2023-05-29 18:15:24 +0800 |
|---|---|---|
| committer | Hoegeun Kwon <hoegeun.kwon@samsung.com> | 2023-11-27 15:16:34 +0900 |
| commit | 60a19eddc28c8806b24ef578d68c2c5aee66f40d (patch) | |
| tree | 360f2e976ebb400aa681244d39aa09231f886ba5 | |
| parent | 5fcaa5eba5481847dc26d887302ee9e1b2978357 (diff) | |
| download | linux-starfive-60a19eddc28c8806b24ef578d68c2c5aee66f40d.tar.gz linux-starfive-60a19eddc28c8806b24ef578d68c2c5aee66f40d.tar.bz2 linux-starfive-60a19eddc28c8806b24ef578d68c2c5aee66f40d.zip | |
riscv: Enable ARCH_SUSPEND_POSSIBLE for s2idle
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>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Link: https://lore.kernel.org/r/20230529101524.322076-1-songshuaishuai@tinylab.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
[hoegeun.kwon: cherry-pick the commit c1f048a6bd7d from mainline]
Signed-off-by: Hoegeun Kwon <hoegeun.kwon@samsung.com>
Change-Id: I535adff9152e6f20b9ad825b03cadfec6ac39684
| -rw-r--r-- | arch/riscv/Kconfig | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index fbfae8d8f6b8..5fd350383dc9 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -715,6 +715,9 @@ 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" |