[PATCH] arm64: dts: exynos: Fix reboot/poweroff issues on Exynos7

[Paweł Chmiel]

In vendor sources for Exynos 7420, psci is not used to reboot or
poweroff device. Instead we should use syscon reboot/poweroff.
Previously it was not possible to poweroff (no syscon poweroff node) or
reboot (because it was handled by psci and this way is not working for
Exynos).

Fixes: fb026cb65247 ("arm64: dts: Add reboot node for exynos7")
Fixes: b9024cbc937d ("arm64: dts: Add initial device tree support for exynos7")
Signed-off-by: Paweł Chmiel <pawel.mikolaj.chm...@gmail.com>
---
 arch/arm64/boot/dts/exynos/exynos7.dtsi | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/exynos/exynos7.dtsi 
b/arch/arm64/boot/dts/exynos/exynos7.dtsi
index 959918f4ca45..47d54c369d03 100644
--- a/arch/arm64/boot/dts/exynos/exynos7.dtsi
+++ b/arch/arm64/boot/dts/exynos/exynos7.dtsi
@@ -117,8 +117,10 @@ cpu_atlas3: cpu@3 {
        };
 
        psci {
-               compatible = "arm,psci-0.2";
+               compatible = "arm,psci";
                method = "smc";
+               cpu_off = <0x84000002>;
+               cpu_on = <0xC4000003>;
        };
 
        soc: soc@0 {
@@ -552,6 +554,13 @@ pmu_system_controller: system-controller@105c0000 {
                        compatible = "samsung,exynos7-pmu", "syscon";
                        reg = <0x105c0000 0x5000>;
 
+                       poweroff: syscon-poweroff {
+                               compatible = "syscon-poweroff";
+                               regmap = <&pmu_system_controller>;
+                               offset = <0x330C>; /* PS_HOLD_CONTROL */
+                               mask = <0x5200>; /* reset value */
+                       };
+
                        reboot: syscon-reboot {
                                compatible = "syscon-reboot";
                                regmap = <&pmu_system_controller>;
-- 
2.27.0