[PATCH] arm64: dts: rockchip: add ap_pwroff and ddrio_pwroff pins for rk3399

[Douglas Anderson]

There are two sleep related pins on rk3399: ap_pwroff and ddrio_pwroff.
Let's add the definition of these two pins to rk3399's main dtsi file so
that boards can use them.

These two pins are similar to the global_pwroff and ddrio_pwroff pins in
rk3288 and are expected to be used in the same way: boards will likely
want to configure these pinctrl settings in their global pinctrl hog
list.

Note that on rk3288 there were two additional pins in the "sleep"
section: "ddr0_retention" and "ddr1_retention".  On rk3288 designs these
pins appeared to actually route from rk3288 back to rk3288.  Presumably
on rk3399 this is simply not needed since the pins don't appear to exist
there.

Signed-off-by: Douglas Anderson <diand...@chromium.org>
---
 arch/arm64/boot/dts/rockchip/rk3399.dtsi | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk3399.dtsi 
b/arch/arm64/boot/dts/rockchip/rk3399.dtsi
index d331e800c00a..209f555b7c29 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3399.dtsi
@@ -806,6 +806,16 @@
                        };
                };
 
+               sleep {
+                       ap_pwroff: ap-pwroff {
+                               rockchip,pins = <1 5 RK_FUNC_1 &pcfg_pull_none>;
+                       };
+
+                       ddrio_pwroff: ddrio-pwroff {
+                               rockchip,pins = <0 1 RK_FUNC_1 &pcfg_pull_none>;
+                       };
+               };
+
                spdif {
                        spdif_bus: spdif-bus {
                                rockchip,pins =
-- 
2.8.0.rc3.226.g39d4020