OrangePi应用笔记：增加spidev

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step1： 配置  CONFIG_SPI_SPIDEV=y

Device Drivers --->
[*]  SPI support --->
[*]    User mode SPI device driver support

step2：配置 dts （Device Tree Source）

 vim kernel/arch/arm64/boot/dts/sun50iw2p1.dtsi

 找到约853行左右，添加红色区域代码如下：

		spi1: spi@01c69000 {#address-cells = <1>;#size-cells = <0>;compatible = "allwinner,sun50i-spi";device_type = "spi1";reg = <0x0 0x01c69000 0x0 0x1000>;interrupts = <GIC_SPI 66 IRQ_TYPE_LEVEL_HIGH>;clocks = <&clk_pll_periph0>, <&clk_spi1>;clock-frequency = <100000000>;pinctrl-names = "default", "sleep";pinctrl-0 = <&spi1_pins_a &spi1_pins_b>;pinctrl-1 = <&spi1_pins_c>;spi1_cs_number = <1>;spi1_cs_bitmap = <1>;status = "okay";			spidev@0x00 {compatible = "spidev";spi-max-frequency = <1200000>;reg = <0>;};};

step3：修改sys_config.fex文件

位置：external（与kernel同级的文件目录中）/sys_config/OrangePiH5_PC2_sys_config.fex

修改内容参考：http://linux-sunxi.org/SPIdev

 

编译内核、模块、dtbs，下载到SD卡中，重启装置：

ls /dev/

 

 

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