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authorNick Hu <nickhu@andestech.com>2018-10-24 18:14:32 +0800
committerGreentime Hu <greentime@andestech.com>2018-11-06 18:01:41 +0800
commit7938e6315c9af3d4a40185b537733bbce842305a (patch)
tree4239f342490d2a7c1c2753ab3e3bcbea20bcde8b /arch/nds32/kernel/Makefile
parentnds32: Add document for NDS32 PMU. (diff)
downloadlinux-dev-7938e6315c9af3d4a40185b537733bbce842305a.tar.xz
linux-dev-7938e6315c9af3d4a40185b537733bbce842305a.zip
nds32: Power management for nds32
There are three sleep states in nds32: suspend to idle, suspend to standby, suspend to ram In suspend to ram, we use the 'standby' instruction to emulate power management device to hang the system util wakeup source send wakeup events to break the loop. First, we push the general purpose registers and system registers to stack. Second, we translate stack pointer to physical address and store to memory to save the stack pointer. Third, after write back and invalid the cache we hang in 'standby' intruction. When wakeup source trigger wake up events, the loop will be break and resume the system. Signed-off-by: Nick Hu <nickhu@andestech.com> Acked-by: Pavel Machek <pavel@ucw.cz> Acked-by: Greentime Hu <greentime@andestech.com> Signed-off-by: Greentime Hu <greentime@andestech.com>
Diffstat (limited to 'arch/nds32/kernel/Makefile')
-rw-r--r--arch/nds32/kernel/Makefile2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/nds32/kernel/Makefile b/arch/nds32/kernel/Makefile
index f52bd2744f50..8d62f2ecb1ab 100644
--- a/arch/nds32/kernel/Makefile
+++ b/arch/nds32/kernel/Makefile
@@ -16,7 +16,7 @@ obj-$(CONFIG_STACKTRACE) += stacktrace.o
obj-$(CONFIG_OF) += devtree.o
obj-$(CONFIG_CACHE_L2) += atl2c.o
obj-$(CONFIG_PERF_EVENTS) += perf_event_cpu.o
-
+obj-$(CONFIG_PM) += pm.o sleep.o
extra-y := head.o vmlinux.lds
obj-y += vdso/