| Message ID | 20231206110807.35882-3-ajones@ventanamicro.com (mailing list archive) |
|---|---|
| Headers | show |
| Series | riscv: Introduce system suspend support | expand |
Hello: This patch was applied to riscv/linux.git (for-next) by Palmer Dabbelt <palmer@rivosinc.com>: On Wed, 6 Dec 2023 12:08:08 +0100 you wrote: > OpenSBI v1.3 and later supports the SUSP SBI extension which has recently > been frozen with the freezing of SBI 2.0. This one patch series adds > system suspend support to Linux, which implements "suspend-to-RAM". To > use it, build the kernel with CONFIG_SUSPEND, boot on a platform which > supports system suspend, and then issue 'echo mem > /sys/power/state'. > It's also possible to test this Linux support on a platform without > system suspend by using OpenSBI's system suspend test support. To enable > test support add > > [...] Here is the summary with links: - [v3,1/1] riscv: sbi: Introduce system suspend support https://git.kernel.org/riscv/c/99cc514d444c You are awesome, thank you!
OpenSBI v1.3 and later supports the SUSP SBI extension which has recently been frozen with the freezing of SBI 2.0. This one patch series adds system suspend support to Linux, which implements "suspend-to-RAM". To use it, build the kernel with CONFIG_SUSPEND, boot on a platform which supports system suspend, and then issue 'echo mem > /sys/power/state'. It's also possible to test this Linux support on a platform without system suspend by using OpenSBI's system suspend test support. To enable test support add opensbi-domains { compatible = "opensbi,domain,config"; system-suspend-test; }; to the chosen node of the device tree. With the test node present, OpenSBI will wait 5 seconds on a suspend and then kick a resume. Changes for v3: - Drop the redundant ARCH_SUSPEND_POSSIBLE addition [Samuel] (v1 changed the def_bool to RISCV_SBI, but now it's 'y' again. This should be fine since an S-mode Linux will always have RISCV_SBI and an M-mode might actually be able to use s2idle.) Changes for v2: - Rebase on v6.7-rc1 - Added check for SBI spec version 2.0, which is the first ratified spec version with SUSP [Conor, Anup] - Picked up t-b from Samuel Changes for v1: - Rebase on v6.6-rc1 -- only minor Kconfig change needed Changes for RFC-v2: - RISCV_SBI dependency [Conor] - Rename SBI_EXT_SUSP_SUSPEND to SBI_EXT_SUSP_SYSTEM_SUSPEND and SBI_SUSP_SLEEP_TYPE_SUSPEND to SBI_SUSP_SLEEP_TYPE_SUSPEND_TO_RAM [Ley Foon] Andrew Jones (1): riscv: sbi: Introduce system suspend support arch/riscv/Kconfig | 2 +- arch/riscv/include/asm/sbi.h | 9 ++++++++ arch/riscv/kernel/suspend.c | 44 ++++++++++++++++++++++++++++++++++++ 3 files changed, 54 insertions(+), 1 deletion(-)