powerpc/4xx: Add Canyonlands suspend and idle support

- Add Clock Power Management (CPM) node to dts tree
- Add idle-doze entry in CPM node
- Add standby entry in CPM node
- Add PM and SUSPEND support by default in defconfig
- Remove UART2 and UART3 as they are unused, this will
  allow CPM to put unused-units (UART2 and UART3) to sleep.

Signed-off-by: Victor Gallardo <vgallardo@apm.com>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>

2 files changed, 12 insertions, 22 deletions

diff --git a/arch/powerpc/boot/dts/canyonlands.dts b/arch/powerpc/boot/dts/canyonlands.dts
index a30370396250..5b27a4b74b79 100644
--- a/arch/powerpc/boot/dts/canyonlands.dts
+++ b/arch/powerpc/boot/dts/canyonlands.dts
@@ -105,6 +105,15 @@
                 dcr-reg = <0x00c 0x002>;
         };
 
+        CPM0: cpm {
+                compatible = "ibm,cpm";
+                dcr-access-method = "native";
+                dcr-reg = <0x160 0x003>;
+                unused-units = <0x00000100>;
+                idle-doze = <0x02000000>;
+                standby = <0xfeff791d>;
+        };
+
         L2C0: l2c {
                 compatible = "ibm,l2-cache-460ex", "ibm,l2-cache";
                 dcr-reg = <0x020 0x008          /* Internal SRAM DCR's */
@@ -270,28 +279,6 @@
                                 interrupts = <0x1 0x4>;
                         };
 
-                        UART2: serial@ef600500 {
-                                device_type = "serial";
-                                compatible = "ns16550";
-                                reg = <0xef600500 0x00000008>;
-                                virtual-reg = <0xef600500>;
-                                clock-frequency = <0>; /* Filled in by U-Boot */
-                                current-speed = <0>; /* Filled in by U-Boot */
-                                interrupt-parent = <&UIC1>;
-                                interrupts = <28 0x4>;
-                        };
-
-                        UART3: serial@ef600600 {
-                                device_type = "serial";
-                                compatible = "ns16550";
-                                reg = <0xef600600 0x00000008>;
-                                virtual-reg = <0xef600600>;
-                                clock-frequency = <0>; /* Filled in by U-Boot */
-                                current-speed = <0>; /* Filled in by U-Boot */
-                                interrupt-parent = <&UIC1>;
-                                interrupts = <29 0x4>;
-                        };
-
                         IIC0: i2c@ef600700 {
                                 compatible = "ibm,iic-460ex", "ibm,iic";
                                 reg = <0xef600700 0x00000014>;
diff --git a/arch/powerpc/configs/44x/canyonlands_defconfig b/arch/powerpc/configs/44x/canyonlands_defconfig
index 45c64d818b2a..17e4dd98eed7 100644
--- a/arch/powerpc/configs/44x/canyonlands_defconfig
+++ b/arch/powerpc/configs/44x/canyonlands_defconfig
@@ -42,6 +42,9 @@ CONFIG_MTD_PHYSMAP_OF=y
 CONFIG_MTD_NAND=y
 CONFIG_MTD_NAND_NDFC=y
 CONFIG_PROC_DEVICETREE=y
+CONFIG_PM=y
+CONFIG_SUSPEND=y
+CONFIG_PPC4xx_CPM=y
 CONFIG_BLK_DEV_RAM=y
 CONFIG_BLK_DEV_RAM_SIZE=35000
 # CONFIG_MISC_DEVICES is not set