arm64: dts: rockchip: add rtc to rock3a

Add devicetree node for hym8563 rtc to
Radxa ROCK3 Model A board.
Signed-off-by: Chukun Pan <amadeus@jmu.edu.cn>
Link: https://lore.kernel.org/r/20220726023046.5876-1-amadeus@jmu.edu.cnSigned-off-by: Heiko Stuebner <heiko@sntech.de>

arch/arm64/boot/dts/rockchip/rk3568-rock-3a.dts

@@ -484,6 +484,23 @@ &i2c4 {
 	status = "disabled";
 };
 
+&i2c5 {
+	status = "okay";
+
+	hym8563: rtc@51 {
+		compatible = "haoyu,hym8563";
+		reg = <0x51>;
+		interrupt-parent = <&gpio0>;
+		interrupts = <RK_PD3 IRQ_TYPE_LEVEL_LOW>;
+		#clock-cells = <0>;
+		clock-frequency = <32768>;
+		clock-output-names = "rtcic_32kout";
+		pinctrl-names = "default";
+		pinctrl-0 = <&hym8563_int>;
+		wakeup-source;
+	};
+};
+
 &i2s0_8ch {
 	status = "okay";
 };
@@ -524,6 +541,12 @@ eth_phy_rst: eth_phy_rst {
 		};
 	};
 
+	hym8563 {
+		hym8563_int: hym8563-int {
+			rockchip,pins = <0 RK_PD3 RK_FUNC_GPIO &pcfg_pull_up>;
+		};
+	};
+
 	leds {
 		led_user_en: led_user_en {
 			rockchip,pins = <0 RK_PB7 RK_FUNC_GPIO &pcfg_pull_none>;