wk2124 串口驱动移植

&spi1 {
    status = "okay";

    spi_wk2xxx: spi_wk2xxx@00{
        status = "okay";
        compatible = "wkmic,wk2xxx_spi";
        reg = <0x00>;
        spi-max-frequency = <10000000>;
        irq_gpio = <&gpio1 GPIO_A7 IRQ_TYPE_EDGE_FALLING>;
        cs-gpios = <&gpio1 GPIO_B7 GPIO_ACTIVE_HIGH>;
    };
};

驱动：drivers/tty/serial/wk2xxx_spi.c

 

添加权限：

/device/rockchip/common

diff --git a/ueventd.rockchip.rc b/ueventd.rockchip.rc
index 6fab0ad..a794999 100755
--- a/ueventd.rockchip.rc
+++ b/ueventd.rockchip.rc
@@ -71,6 +71,9 @@
 /dev/ttyUSB8              0660   radio         radio
 /dev/ttyUSB9              0660   radio         radio
 
+#wmc add for wk2124
+/dev/ttysWK*              0777   system      system
+
 # for mali-t764
 /dev/mali0               0666   system          system

 

 3128dts配置：

 

&spi0 {
       status = "okay";
       max-freq = <50000000>;
       
       wk2124@0 {
       compatible = "wk2124,spi_2_uart";
        reg = <0>;
               spi-max-frequency = <1000000>;
               //spi-cpha;
               //spi-cpol;
               WK_irq_gpio = <&gpio2 GPIO_C7 IRQ_TYPE_LEVEL_LOW>;
               WK_cs_gpio = <&gpio1 GPIO_B3 GPIO_ACTIVE_HIGH>;
       };
};

 3128的spi0和uart1是复用的，使用spi0的时候，需要关闭uart1，否则wk2124装出来的工作会异常。

&uart1 {
        status = "disabled";
        dma-names = "!tx", "!rx";
        pinctrl-0 = <&uart1_xfer &uart1_cts>;
};

 

参考文章：https://blog.csdn.net/chenkanuo/article/details/131293603