Allwinner A64 have a RSB controller like the one on A23/A33 SoCs.

Add it and its pinmux.

Signed-off-by: Icenowy Zheng <icen...@aosc.io>
Acked-by: Chen-Yu Tsai <w...@csie.org>
---
Changes in v2:
- Removed bonus properties in pio node.
- Added Chen-Yu's ACK.

 arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi 
b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
index c7f669f5884f..05ec9fc5e81f 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
@@ -422,6 +422,25 @@
                        #gpio-cells = <3>;
                        interrupt-controller;
                        #interrupt-cells = <3>;
+
+                       r_rsb_pins: rsb@0 {
+                               pins = "PL0", "PL1";
+                               function = "s_rsb";
+                       };
+               };
+
+               r_rsb: rsb@1f03400 {
+                       compatible = "allwinner,sun8i-a23-rsb";
+                       reg = <0x01f03400 0x400>;
+                       interrupts = <GIC_SPI 39 IRQ_TYPE_LEVEL_HIGH>;
+                       clocks = <&r_ccu 6>;
+                       clock-frequency = <3000000>;
+                       resets = <&r_ccu 2>;
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&r_rsb_pins>;
+                       status = "disabled";
+                       #address-cells = <1>;
+                       #size-cells = <0>;
                };
        };
 };
-- 
2.12.2

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