RK3328 Android 版本串口无法使用，无 ttyS1 设备节点！！！
最近一个项目要使用 rk3328 接串口外设 ，发现官网的 wifi 有问题，ttySx 节点都没有。
http://www.t-firefly.com/doc/product/info/id/263.html
4) 接收数据首先在设备上运行下列命令：cat /dev/ttyS1复制代码
然后在主机的串口终端输入字符串 “Firefly uart1 test...”，设备端即可见到相同的字符串。
ttyS1设备节点都没有，操作个毛线，也不知道如何打开，请问你们rk3328的 git 代码能不能更新一下，懂 Kernel 应该配置一下，很简单的吧，这么简单的事情都做不好么。
自己尝试改了下 dts，还是没有 ttyS1
diff --git a/arch/arm64/boot/dts/rk3328-roc-cc-port.dtsi b/arch/arm64/boot/dts/rk3328-roc-cc-port.dtsi
index a66214d..10c4af1 100644
--- a/arch/arm64/boot/dts/rk3328-roc-cc-port.dtsi
+++ b/arch/arm64/boot/dts/rk3328-roc-cc-port.dtsi
@@ -53,6 +53,60 @@
status = "okay";
};
+ aliases {
+ serial0 = &uart0;
+ serial1 = &uart1;
+ serial2 = &uart_dbg;
+ };
+
+ uart0: serial@ff110000 {
+ compatible = "rockchip,serial";
+ reg = <0x0 0xff110000 0x0 0x100>;
+ interrupts = <GIC_SPI 55 IRQ_TYPE_LEVEL_HIGH>;
+ clock-frequency = <24000000>;
+ clocks = <&clk_uart0>, <&clk_gates16 11>;
+ clock-names = "sclk_uart", "pclk_uart";
+ reg-shift = <2>;
+ reg-io-width = <4>;
+ dmas = <&pdma 2>, <&pdma 3>;
+ #dma-cells = <2>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&uart0_xfer &uart0_cts &uart0_rts>;
+ status = "disabled";
+ };
+
+ uart1: serial@ff120000 {
+ compatible = "rockchip,serial";
+ reg = <0x0 0xff120000 0x0 0x100>;
+ interrupts = <GIC_SPI 56 IRQ_TYPE_LEVEL_HIGH>;
+ clock-frequency = <24000000>;
+ clocks = <&clk_uart1>, <&clk_gates16 12>;
+ clock-names = "sclk_uart", "pclk_uart";
+ reg-shift = <2>;
+ reg-io-width = <4>;
+ dmas = <&pdma 4>, <&pdma 5>;
+ #dma-cells = <2>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&uart1_xfer &uart1_cts &uart1_rts>;
+ status = "okey";
+ };
+
+ uart_dbg: serial@ff130000 {
+ compatible = "rockchip,serial";
+ reg = <0x0 0xff130000 0x0 0x100>;
+ interrupts = <GIC_SPI 57 IRQ_TYPE_LEVEL_HIGH>;
+ clock-frequency = <24000000>;
+ clocks = <&clk_uart2>, <&clk_gates16 13>;
+ clock-names = "sclk_uart", "pclk_uart";
+ reg-shift = <2>;
+ reg-io-width = <4>;
+ dmas = <&pdma 6>, <&pdma 7>;
+ #dma-cells = <2>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&uart2m1_xfer>;
+ status = "disabled";
+ };
+
io-domains {
status = "okay";
@@ -378,11 +432,20 @@
};
&uart0 {
- status = "disabled";
- dma-names = "!tx", "!rx";
- pinctrl-0 = <&uart0_xfer &uart0_cts>;
+ status = "disabled";
+ dma-names = "!tx", "!rx";
+ pinctrl-0 = <&uart0_xfer &uart0_cts>;
+};
+
+&uart1{
+ status = "okey";
};
+&uart_dbg{
+ status = "okey";
+};
+ dapeng 发表于 2018-3-4 14:28
自己尝试改了下 dts，还是没有 ttyS1
diff --git a/arch/arm64/boot/dts/rk3328-roc-cc-port.dtsi b/arc ...
改得有问题，不知道是复制错了还是怎样
你应该直接参照uart0改
&uart0 {
status = "disabled";
dma-names = "!tx", "!rx";
pinctrl-0 = <&uart0_xfer &uart0_cts>;
};
最好在a/a/b/d/rk3328-roc-cc.dts上面改，这样可以避免被其他dts覆盖掉。
&uart1 {
status = "okay";
dma-names = "!tx", "!rx";
pinctrl-0 = <&uart1_xfer &uart1_cts>;
};
我没有3328，所以如果通信有问题，则要去确认uart1是否有被复用的可能性
希望可以帮到你。 忒感谢了，赶紧去试试！！！！
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