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 <[email protected]>
Signed-off-by: Huacai Chen <[email protected]>
---
arch/loongarch/power/suspend_asm.S | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/arch/loongarch/power/suspend_asm.S b/arch/loongarch/power/suspend_asm.S
index 90da899c06a1..e2fc3b4e31f0 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
--
2.39.1