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authorSong Shuai <songshuaishuai@tinylab.org>2023-05-29 18:15:24 +0800
committerPalmer Dabbelt <palmer@rivosinc.com>2023-07-04 08:57:22 -0700
commitc1f048a6bd7d7cb42e9bfd79eff85b33894997fe (patch)
tree473cfa38e7784e5c8b4a92107d9feed7391c95ad /arch
parent54cdede08f2f4414629001b124110d656161080a (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/Kconfig3
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"