diff options
| author | Song Shuai <songshuaishuai@tinylab.org> | 2023-05-29 18:15:24 +0800 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@rivosinc.com> | 2023-07-04 08:57:22 -0700 |
| commit | c1f048a6bd7d7cb42e9bfd79eff85b33894997fe (patch) | |
| tree | 473cfa38e7784e5c8b4a92107d9feed7391c95ad /arch | |
| parent | 54cdede08f2f4414629001b124110d656161080a (diff) | |
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>
Diffstat (limited to 'arch')
| -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 c8c22cf11602..e242bf63c0d2 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -873,6 +873,9 @@ 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" |