rk3568 android11 RTC hym8563调试

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已于 2022-11-10 10:47:30 修改 · 4.8k 阅读

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#linux #java #运维

于 2021-11-29 15:53:33 首次发布

本文档详细介绍了Rockchip RK3568 EVB1 DDR4设备的配置，包括内核和设备树的修改，如I2C5接口的HYM8563实时时钟的启用，并在defconfig中更新了RTC驱动的选择。此外，还涉及到了 sepolicy 中genfs_contexts的更新，以适应新的设备需求。

1、原理图如下：

2、 kernel部分：

kernel/arch/arm64/boot/dts/rockchip/rk3568-evb1-ddr4-v10.dtsi

kernel/arch/arm64/configs/rockchip_defconfig

diff --git a/arch/arm64/boot/dts/rockchip/rk3568-evb1-ddr4-v10.dtsi b/arch/arm64/boot/dts/rockchip/rk3568-evb1-ddr4-v10.dtsi
old mode 100644
new mode 100755
index d4035a3..b8489b1
--- a/arch/arm64/boot/dts/rockchip/rk3568-evb1-ddr4-v10.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3568-evb1-ddr4-v10.dtsi
@@ -270,6 +270,21 @@
 	power-supply = <&vcc3v3_lcd0_n>;
 };
 
+&i2c5 {
+	status = "okay";
+
+	hym8563: hym8563@51 {
+		status = "okay";
+		compatible = "haoyu,hym8563";
+		reg = <0x51>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&rtc_int>;
+		interrupt-parent = <&gpio0>;
+		interrupts = <RK_PD3 IRQ_TYPE_LEVEL_LOW>;
+	};	
+};
+
+
 &i2c4 {
 	st