ARM: dts: rockchip: add syscon-reboot-mode DT node

Rockchip platform use a SYSCON mapped register store
the reboot mode magic value for bootloader to use when
system reboot. So add syscon-reboot-mode driver DT node
for rk3xxx/rk3036/rk3288 based platform

Signed-off-by: Andy Yan <andy.yan@rock-chips.com>
Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

3 files changed, 32 insertions, 2 deletions

diff --git a/arch/arm/boot/dts/rk3036.dtsi b/arch/arm/boot/dts/rk3036.dtsi
index 843d2be2e4e9..a935523a1eb8 100644
--- a/arch/arm/boot/dts/rk3036.dtsi
+++ b/arch/arm/boot/dts/rk3036.dtsi
@@ -43,6 +43,7 @@
 #include <dt-bindings/interrupt-controller/arm-gic.h>
 #include <dt-bindings/pinctrl/rockchip.h>
 #include <dt-bindings/clock/rk3036-cru.h>
+#include <dt-bindings/soc/rockchip,boot-mode.h>
 #include "skeleton.dtsi"
 
 / {
@@ -313,8 +314,17 @@
         };
 
         grf: syscon@20008000 {
-                compatible = "rockchip,rk3036-grf", "syscon";
+                compatible = "rockchip,rk3036-grf", "syscon", "simple-mfd";
                 reg = <0x20008000 0x1000>;
+
+                reboot-mode {
+                        compatible = "syscon-reboot-mode";
+                        offset = <0x1d8>;
+                        mode-normal = <BOOT_NORMAL>;
+                        mode-recovery = <BOOT_RECOVERY>;
+                        mode-bootloader = <BOOT_FASTBOOT>;
+                        mode-loader = <BOOT_BL_DOWNLOAD>;
+                };
         };
 
         acodec: acodec-ana@20030000 {
diff --git a/arch/arm/boot/dts/rk3288.dtsi b/arch/arm/boot/dts/rk3288.dtsi
index e5c4a11f6bc6..48ca4e452564 100644
--- a/arch/arm/boot/dts/rk3288.dtsi
+++ b/arch/arm/boot/dts/rk3288.dtsi
@@ -45,6 +45,7 @@
 #include <dt-bindings/clock/rk3288-cru.h>
 #include <dt-bindings/thermal/thermal.h>
 #include <dt-bindings/power/rk3288-power.h>
+#include <dt-bindings/soc/rockchip,boot-mode.h>
 #include "skeleton.dtsi"
 
 / {
@@ -791,6 +792,15 @@
                                 clocks = <&cru ACLK_GPU>;
                         };
                 };
+
+                reboot-mode {
+                        compatible = "syscon-reboot-mode";
+                        offset = <0x94>;
+                        mode-normal = <BOOT_NORMAL>;
+                        mode-recovery = <BOOT_RECOVERY>;
+                        mode-bootloader = <BOOT_FASTBOOT>;
+                        mode-loader = <BOOT_BL_DOWNLOAD>;
+                };
         };
 
         sgrf: syscon@ff740000 {
diff --git a/arch/arm/boot/dts/rk3xxx.dtsi b/arch/arm/boot/dts/rk3xxx.dtsi
index 99bbcc2c9b89..405d61258f10 100644
--- a/arch/arm/boot/dts/rk3xxx.dtsi
+++ b/arch/arm/boot/dts/rk3xxx.dtsi
@@ -43,6 +43,7 @@
 
 #include <dt-bindings/interrupt-controller/irq.h>
 #include <dt-bindings/interrupt-controller/arm-gic.h>
+#include <dt-bindings/soc/rockchip,boot-mode.h>
 #include "skeleton.dtsi"
 
 / {
@@ -246,8 +247,17 @@
         };
 
         pmu: pmu@20004000 {
-                compatible = "rockchip,rk3066-pmu", "syscon";
+                compatible = "rockchip,rk3066-pmu", "syscon", "simple-mfd";
                 reg = <0x20004000 0x100>;
+
+                reboot-mode {
+                        compatible = "syscon-reboot-mode";
+                        offset = <0x40>;
+                        mode-normal = <BOOT_NORMAL>;
+                        mode-recovery = <BOOT_RECOVERY>;
+                        mode-bootloader = <BOOT_FASTBOOT>;
+                        mode-loader = <BOOT_BL_DOWNLOAD>;
+                };
         };
 
         grf: grf@20008000 {