MT8788 android 9.0 SPI TO ETHERNET驱动移植
1. 硬件配置打开核心板原理图，配置ETHERNET_RST,ETHERNET_EN,ENIT7,SPI_MISO,SPI_CS,SPI_MOSI,SPI_SCK，打开vendor\mediatek\proprietary\scripts\dct\DrvGen.exe 工具选择(1)vendor\mediatek\proprietary\bootable\bootloader\lk\target\tb8788p1_64_bsp\dct\dct\codegen.dws (2)kernel-4.4\drivers\misc\mediatek\dws\mt6771\tb8788p1_64_bsp.dws配置操作如图所示：
上面的SPI模式如果没有配置的话，设备ID是读不到的，下图是我忘记配SPI模式抓的log
2. sensor 驱动移植2.1 添加以太网驱动文件(dm9051)将dm9051驱动文件夹添加到ethernet目录中路径: kernel-4.4/drivers/net/ethernet/dm9051/
添加驱动文件后，添加修改配置文件路径: kernel-4.4/drivers/net/ethernet/Kconfigsource "drivers/net/ethernet/dm9051/Kconfig"路径: kernel-4.4/drivers/net/ethernet/Makefileobj-$(CONFIG_DM9051) += dm9051/2.2 修改配置文件(1) 路径: kernel-4.4/arch/arm64/boot/dts/mediatek/mt6771.dts，在该目录下添加代码
dm9051:dm9051{
compatible = "mediatek,dm9051";
};(2) 路径: kernel-4.4/arch/arm64/boot/dts/mediatek/tb8788p1_64_bsp.dts，在该目录下添加代码&dm9051 {
gpio-power = <&pio 72 0x0>;
gpio-rst-dm9051 = <&pio 73 0x0>;
interrupt-parent = <&pio>;
interrupts = <7 IRQ_TYPE_LEVEL_HIGH 7 0>;
deb-gpios = <&pio 7 0>;
debounce = <1000>;
};&spi0 {
#address-cells = <1>;
#size-cells = <0>;
fingerprint@0 {
compatible = "goodix,goodix-fp";
reg = <0>;
spi-max-frequency = <8000000>;
netlink-event = <30>;
status = "disabled";
};
ethernet_dm9051:ethernet_dm9051@1 {
compatible = "davicom,dm9051";
reg = <0>;
spi-max-frequency = <20000000>;
netlink-event = <30>;
status ="okay";
};
};(3) 路径: kernel-4.4/arch/arm64/configs/tb8788p1_64_bsp_defconfig，在该目录下添加代码#ethernet start
CONFIG_DM9051=y
CONFIG_ETHERNET=y
CONFIG_SECTION_MISMATCH_WARN_ONLY=y
CONFIG_NETDEVICES=y
#ethernet end操作完以上步骤后，可通过adb来看设备是否连通以太网，操作如下图
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