ARM: mvebu: add suspend/resume DT information for Armada XP GP

This commit improves the Armada XP GP Device Tree description to
describe the 3 GPIOs that are used to connect the SoC to the PIC
micro-controller that we talk to shutdown the SoC when entering
suspend to RAM.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Link: https://lkml.kernel.org/r/1416585613-2113-15-git-send-email-thomas.petazzoni@free-electrons.com
Signed-off-by: Jason Cooper <jason@lakedaemon.net>

1 files changed, 18 insertions, 1 deletions

diff --git a/arch/arm/boot/dts/armada-xp-gp.dts b/arch/arm/boot/dts/armada-xp-gp.dts
index 0478c55ca656..ea8673647494 100644
--- a/arch/arm/boot/dts/armada-xp-gp.dts
+++ b/arch/arm/boot/dts/armada-xp-gp.dts
@@ -23,6 +23,7 @@
  */
 
 /dts-v1/;
+#include <dt-bindings/gpio/gpio.h>
 #include "armada-xp-mv78460.dtsi"
 
 / {
@@ -48,6 +49,14 @@
                       <0x00000001 0x00000000 0x00000001 0x00000000>;
         };
 
+        cpus {
+                pm_pic {
+                        ctrl-gpios = <&gpio0 16 GPIO_ACTIVE_LOW>,
+                                     <&gpio0 17 GPIO_ACTIVE_LOW>,
+                                     <&gpio0 18 GPIO_ACTIVE_LOW>;
+                };
+        };
+
         soc {
                 ranges = <MBUS_ID(0xf0, 0x01) 0 0 0xf1000000 0x100000
                           MBUS_ID(0x01, 0x1d) 0 0 0xfff00000 0x100000
@@ -115,7 +124,15 @@
                         serial@12300 {
                                 status = "okay";
                         };
-
+                        pinctrl {
+                                pinctrl-0 = <&pic_pins>;
+                                pinctrl-names = "default";
+                                pic_pins: pic-pins-0 {
+                                        marvell,pins = "mpp16", "mpp17",
+                                                       "mpp18";
+                                        marvell,function = "gpio";
+                                };
+                        };
                         sata@a0000 {
                                 nr-ports = <2>;
                                 status = "okay";