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| author |   Anup Patel <anup.patel@wdc.com> | 2022-02-10 11:19:45 +0530 |
|---|---|---|
| committer |   Palmer Dabbelt <palmer@rivosinc.com> | 2022-03-10 09:29:51 -0800 |
| commit | 6abf32f1d9c5009dcccded2c1e7ca899a4ab587b (patch) | |
| tree | 98d2fa09e7351cba6dcd307277180e29568ddef7 /drivers/cpuidle/Kconfig.riscv | |
| parent | cpuidle: Factor-out power domain related code from PSCI domain driver (diff) | |
| download | linux-dev-6abf32f1d9c5009dcccded2c1e7ca899a4ab587b.tar.xz linux-dev-6abf32f1d9c5009dcccded2c1e7ca899a4ab587b.zip | |
cpuidle: Add RISC-V SBI CPU idle driver
The RISC-V SBI HSM extension provides HSM suspend call which can
be used by Linux RISC-V to enter platform specific low-power state.
This patch adds a CPU idle driver based on RISC-V SBI calls which
will populate idle states from device tree and use SBI calls to
entry these idle states.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Acked-by: Atish Patra <atishp@rivosinc.com>
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Diffstat (limited to 'drivers/cpuidle/Kconfig.riscv')
| -rw-r--r-- | drivers/cpuidle/Kconfig.riscv | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/cpuidle/Kconfig.riscv b/drivers/cpuidle/Kconfig.riscv new file mode 100644 index 000000000000..78518c26af74 --- /dev/null +++ b/drivers/cpuidle/Kconfig.riscv @@ -0,0 +1,15 @@ +# SPDX-License-Identifier: GPL-2.0-only +# +# RISC-V CPU Idle drivers +# + +config RISCV_SBI_CPUIDLE + bool "RISC-V SBI CPU idle Driver" + depends on RISCV_SBI + select DT_IDLE_STATES + select CPU_IDLE_MULTIPLE_DRIVERS + select DT_IDLE_GENPD if PM_GENERIC_DOMAINS_OF + help + Select this option to enable RISC-V SBI firmware based CPU idle + driver for RISC-V systems. This drivers also supports hierarchical + DT based layout of the idle state. |