MT8788 android 9.0 SPI TO ETHERNET驱动移植

不懂就问

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/Kconfig

1. source "drivers/net/ethernet/dm9051/Kconfig"

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路径: kernel-4.4/drivers/net/ethernet/Makefile

1. obj-$(CONFIG_DM9051) += dm9051/

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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

1. dm9051:dm9051{
   
2.     compatible = "mediatek,dm9051";
   
3. };

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(2) 路径: kernel-4.4/arch/arm64/boot/dts/mediatek/tb8788p1_64_bsp.dts，在该目录下添加代码

1. &dm9051 {
   
2. gpio-power = <&pio 72 0x0>;
   
3. gpio-rst-dm9051 = <&pio 73 0x0>;
   
4. interrupt-parent = <&pio>;
   
5. interrupts = <7 IRQ_TYPE_LEVEL_HIGH 7 0>;
   
6. deb-gpios = <&pio 7 0>;
   
7. debounce = <1000>;
   
8. };

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1. &spi0 {
   
2. #address-cells = <1>;
   
3. #size-cells = <0>;
   
4. fingerprint@0 {
   
5. compatible = "goodix,goodix-fp";
   
6. reg = <0>;
   
7. spi-max-frequency = <8000000>;
   
8. netlink-event = <30>;
   
9. status = "disabled";
   
10. };
    
11. ethernet_dm9051:ethernet_dm9051@1 {
    
12. compatible = "davicom,dm9051";
    
13. reg = <0>;
    
14. spi-max-frequency = <20000000>;
    
15. netlink-event = <30>;
    
16. status ="okay";
    
17. };
    
18. };

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(3) 路径: kernel-4.4/arch/arm64/configs/tb8788p1_64_bsp_defconfig，在该目录下添加代码

1. #ethernet start
   
2. CONFIG_DM9051=y
   
3. CONFIG_ETHERNET=y
   
4. CONFIG_SECTION_MISMATCH_WARN_ONLY=y
   
5. CONFIG_NETDEVICES=y
   
6. #ethernet end

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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