[PATCH v2 3/4] arm64: dts: allwinner: h6: Add RSB controller node

[Samuel Holland <samuel@xxxxxxxxxxxx>]

The H6 SoC contains an undocumented but fully functional RSB controller.
Add support for it. The MMIO register address matches other SoCs of the
same generation, and the IRQ matches a hole in the documented IRQ list.

Signed-off-by: Samuel Holland <samuel@xxxxxxxxxxxx>
---
 arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi
index 8a62a9fbe347..b043beea8e6e 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi
+++ b/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi
@@ -949,6 +949,11 @@ r_ir_rx_pin: r-ir-rx-pin {
 				pins = "PL9";
 				function = "s_cir_rx";
 			};
+
+			r_rsb_pins: r-rsb-pins {
+				pins = "PL0", "PL1";
+				function = "s_rsb";
+			};
 		};
 
 		r_ir: ir@7040000 {
@@ -979,6 +984,20 @@ r_i2c: i2c@7081400 {
 			#size-cells = <0>;
 		};
 
+		r_rsb: rsb@7083000 {
+			compatible = "allwinner,sun8i-a23-rsb";
+			reg = <0x07083000 0x400>;
+			interrupts = <GIC_SPI 108 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&r_ccu CLK_R_APB2_RSB>;
+			clock-frequency = <3000000>;
+			resets = <&r_ccu RST_R_APB2_RSB>;
+			pinctrl-names = "default";
+			pinctrl-0 = <&r_rsb_pins>;
+			status = "disabled";
+			#address-cells = <1>;
+			#size-cells = <0>;
+		};
+
 		ths: thermal-sensor@5070400 {
 			compatible = "allwinner,sun50i-h6-ths";
 			reg = <0x05070400 0x100>;
-- 
2.26.2