RK3399 11.0关闭调试串口改为普通RS232通信串口

kernel DTS 修改：

diff 复制代码

kernel$

diff --git a/arch/arm64/boot/dts/rockchip/rk3399-android.dtsi b/arch/arm64/boot/dts/rockchip/rk3399-android.dtsi
index 76753a98c467..c03aa533b9b6 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399-android.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3399-android.dtsi
@@ -49,7 +49,7 @@
 	compatible = "rockchip,android", "rockchip,rk3399";
 
 	chosen: chosen {
-		bootargs = "earlycon=uart8250,mmio32,0xff1a0000 coherent_pool=1m";
+		//bootargs = "earlycon=uart8250,mmio32,0xff1a0000 coherent_pool=1m";
 	};
 
 	cpuinfo {
@@ -59,6 +59,7 @@
 	};
 
 	fiq_debugger: fiq-debugger {
+		status = "disabled";
 		compatible = "rockchip,fiq-debugger";
 		rockchip,serial-id = <2>;
 		rockchip,wake-irq = <0>;
diff --git a/arch/arm64/boot/dts/rockchip/rk3399-r69_2-lvds.dtsi b/arch/arm64/boot/dts/rockchip/rk3399-r69_2-lvds.dtsi
index bc94746437d1..37d03f2d4f7e 100755
--- a/arch/arm64/boot/dts/rockchip/rk3399-r69_2-lvds.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3399-r69_2-lvds.dtsi
@@ -1070,7 +1070,7 @@
 };
 
 &uart2 {
-	status = "disabled";
+	status = "okay";
 };
 
 &usb_host0_ehci {
diff --git a/arch/arm64/configs/rockchip_defconfig b/arch/arm64/configs/rockchip_defconfig
index 074fb8c63495..dadfb5e2299b 100644
--- a/arch/arm64/configs/rockchip_defconfig
+++ b/arch/arm64/configs/rockchip_defconfig
@@ -819,7 +819,7 @@ CONFIG_ION=y
 CONFIG_ION_SYSTEM_HEAP=y
 CONFIG_ION_CMA_HEAP=y
 CONFIG_ION_FORCE_DMA_SYNC=y
-CONFIG_FIQ_DEBUGGER=y
+#CONFIG_FIQ_DEBUGGER=y
 CONFIG_FIQ_DEBUGGER_NO_SLEEP=y
 CONFIG_FIQ_DEBUGGER_CONSOLE=y
 CONFIG_FIQ_DEBUGGER_CONSOLE_DEFAULT_ENABLE=y

device init.rc 配置

diff 复制代码

diff --git a/init.rk30board.rc b/init.rk30board.rc
index d4dac77..13b87a0 100755
--- a/init.rk30board.rc
+++ b/init.rk30board.rc
@@ -204,6 +204,9 @@ on boot
     chmod 0666 /dev/ttyS7
     chmod 0666 /dev/ttyS9
     chmod 0666 /dev/ttyS0
+	#20250612 ADD ttyS2
+	chown system system /dev/ttyS2
+	chmod 0666 /dev/ttyS2
    
     #add for cts
     chmod 0660 /sys/bus/platform/drivers/usb20_otg/dwc_otg_conn_en