powerpc/85xx/86xx: Add suspend/resume support

This patch adds suspend/resume support for MPC8540 and MPC8641D-
compatible CPUs. To reach sleep state, we just write the SLP bit
into the PM control and status register.

So far we don't support Deep Sleep mode as found in newer MPC85xx
CPUs (i.e. MPC8536). It can be relatively easy implemented though,
and for it we reserve 'mem' suspend type.

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Acked-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

1 files changed, 10 insertions, 1 deletions

diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 61abde11a45e..5dbd375a3f2a 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -215,7 +215,8 @@ config ARCH_HIBERNATION_POSSIBLE
 
 config ARCH_SUSPEND_POSSIBLE
         def_bool y
-        depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx
+        depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
+                   PPC_85xx || PPC_86xx
 
 config PPC_DCR_NATIVE
         bool
@@ -664,6 +665,14 @@ config FSL_PCI
         select PPC_INDIRECT_PCI
         select PCI_QUIRKS
 
+config FSL_PMC
+        bool
+        default y
+        depends on SUSPEND && (PPC_85xx || PPC_86xx)
+        help
+          Freescale MPC85xx/MPC86xx power management controller support
+          (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
+
 config 4xx_SOC
         bool