Re: [PATCH v1 2/3] arm64: dts: amlogic: meson-s4-s905y4-khadas-vim1s: enable HYM8563 RTC

The Khadas VIM1S board has an on-board Haoyu Micro HYM8563 Real Time
Clock (RTC) connected to the I2C1 bus.

Enable the I2C1 controller and add the RTC child node to support
hardware clock persistence.

Signed-off-by: Nick Xie <redacted>
---
  .../dts/amlogic/meson-s4-s905y4-khadas-vim1s.dts  | 15 +++++++++++++++
  1 file changed, 15 insertions(+)

diff --git a/arch/arm64/boot/dts/amlogic/meson-s4-s905y4-khadas-vim1s.dts b/arch/arm64/boot/dts/amlogic/meson-s4-s905y4-khadas-vim1s.dts
index 792ab45c4c944..7314e0ab81da3 100644
--- a/arch/arm64/boot/dts/amlogic/meson-s4-s905y4-khadas-vim1s.dts
+++ b/arch/arm64/boot/dts/amlogic/meson-s4-s905y4-khadas-vim1s.dts

@@ -20,6 +20,8 @@ aliases {
  		mmc0 = &emmc; /* eMMC */
  		mmc1 = &sd; /* SD card */
  		mmc2 = &sdio; /* SDIO */
+		rtc0 = &rtc;
+		rtc1 = &vrtc;
  		serial0 = &uart_b;
  	};
  

@@ -223,6 +225,19 @@ &ethmac {
  	phy-mode = "rmii";
  };
  
+&i2c1 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c1_pins2>;
+	clock-frequency = <100000>;
+
+	rtc: rtc@51 {
+		compatible = "haoyu,hym8563";
+		reg = <0x51>;
+		#clock-cells = <0>;
+	};
+};
+
  &ir {
  	status = "okay";
  	pinctrl-0 = <&remote_pins>;