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| author | Huacai Chen <chenhuacai@loongson.cn> | 2023-04-18 19:38:58 +0800 |
|---|---|---|
| committer | Huacai Chen <chenhuacai@loongson.cn> | 2023-04-18 19:38:58 +0800 |
| commit | 1c1378a4090845e12c4dbbb337de7acce309b570 (patch) | |
| tree | bdcb14c5c5a3ee1f7416ba411a78f91c0042162f | |
| parent | 6637775ca3c3d0b4f7b83c5ce9a592df2c9bff52 (diff) | |
| download | linux-1c1378a4090845e12c4dbbb337de7acce309b570.tar.gz | |
LoongArch: Enable PG when wakeup from suspend
Some firmwares don't enable PG when wakeup from suspend, so do it in
kernel. This can improve code compatibility for boot kernel.
Signed-off-by: Baoqi Zhang <zhangbaoqi@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
| -rw-r--r-- | arch/loongarch/power/suspend_asm.S | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/loongarch/power/suspend_asm.S b/arch/loongarch/power/suspend_asm.S index 90da899c06a194..e2fc3b4e31f001 100644 --- a/arch/loongarch/power/suspend_asm.S +++ b/arch/loongarch/power/suspend_asm.S @@ -80,6 +80,10 @@ SYM_INNER_LABEL(loongarch_wakeup_start, SYM_L_GLOBAL) JUMP_VIRT_ADDR t0, t1 + /* Enable PG */ + li.w t0, 0xb0 # PLV=0, IE=0, PG=1 + csrwr t0, LOONGARCH_CSR_CRMD + la.pcrel t0, acpi_saved_sp ld.d sp, t0, 0 SETUP_WAKEUP |