The H3 and H5 SoCs contain a message box that can be used to send
messages and interrupts back and forth between the ARM application CPUs
and the ARISC coprocessor. Add a device tree node for it.

Signed-off-by: Samuel Holland <sam...@sholland.org>
---
 arch/arm/boot/dts/sunxi-h3-h5.dtsi | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/arch/arm/boot/dts/sunxi-h3-h5.dtsi 
b/arch/arm/boot/dts/sunxi-h3-h5.dtsi
index 224e105a994a..f25876a8021a 100644
--- a/arch/arm/boot/dts/sunxi-h3-h5.dtsi
+++ b/arch/arm/boot/dts/sunxi-h3-h5.dtsi
@@ -232,6 +232,16 @@
                        reg = <0x1c14000 0x400>;
                };
 
+               msgbox: mailbox@1c17000 {
+                       compatible = "allwinner,sun8i-h3-msgbox",
+                                    "allwinner,sun6i-a31-msgbox";
+                       reg = <0x01c17000 0x1000>;
+                       clocks = <&ccu CLK_BUS_MSGBOX>;
+                       resets = <&ccu RST_BUS_MSGBOX>;
+                       interrupts = <GIC_SPI 49 IRQ_TYPE_LEVEL_HIGH>;
+                       #mbox-cells = <1>;
+               };
+
                usb_otg: usb@1c19000 {
                        compatible = "allwinner,sun8i-h3-musb";
                        reg = <0x01c19000 0x400>;
-- 
2.21.0

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