新建一个板级配置文件

我的目标
通过./build.sh lunch 来选择我的板子配置。

在目录sdk/project/cfg目录下新建一个xxxx.mk文件，文件名字格式如下：

BoardConfig-"启动介质"-"电源方案"-"硬件版本"-"应用场景".mk

----------------------------------------------------------------
0. BoardConfig_IPC/BoardConfig-EMMC-NONE-RV1103_Luckfox_Pico-IPC.mkboot medium(启动介质): EMMCpower solution(电源方案): NONEhardware version(硬件版本): RV1103_Luckfox_Picoapplicaton(应用场景): IPC
--------------------------------------------------------------------------------------------------------------------------------
1. BoardConfig_IPC/BoardConfig-SPI_NAND-NONE-RV1103_Luckfox_Pico_Plus-IPC.mkboot medium(启动介质): SPI_NANDpower solution(电源方案): NONEhardware version(硬件版本): RV1103_Luckfox_Pico_Plusapplicaton(应用场景): IPC
----------------------------------------------------------------

• BoardConfig-EMMC-NONE-RV1103_Luckfox_Pico-IPC.mk
• BoardConfig-SPI_NAND-NONE-RV1103_Luckfox_Pico_Plus-IPC.mk

- 作为大区分
_作为字符串内部的区分

而我的目标是，在板子RV1103_Luckfox_Pico的基础上加入了，sd卡、sdio-wifi卡和spi-nand Flash，故我取了一个名字

• BoardConfig-SPI_NAND-NONE-RV1103_Luckfox_Pico_Pro-SD_WIFI_IPC.mk

脚本解析出来是：

----------------------------------------------------------------
2. BoardConfig_IPC/BoardConfig-SPI_NAND-NONE-RV1103_Luckfox_Pico_Pro-SD_WIFI_IPC.mkboot medium(启动介质): SPI_NANDpower solution(电源方案): NONEhardware version(硬件版本): RV1103_Luckfox_Pico_Proapplicaton(应用场景): SD_WIFI_IPC
----------------------------------------------------------------

它的主要内容

#!/bin/bash# Target arch
export RK_ARCH=arm# Target CHIP
export RK_CHIP=rv1106# Target Toolchain Cross Compile
export RK_TOOLCHAIN_CROSS=arm-rockchip830-linux-uclibcgnueabihf# Target boot medium: emmc/spi_nor/spi_nand
export RK_BOOT_MEDIUM=spi_nand# Uboot defconfig
export RK_UBOOT_DEFCONFIG=rv1106_defconfig# Uboot defconfig fragment
export RK_UBOOT_DEFCONFIG_FRAGMENT=rk-sfc.config# Kernel defconfig
export RK_KERNEL_DEFCONFIG=luckfox_sd_wifi_rv1106_linux_defconfig# Kernel dts
export RK_KERNEL_DTS=rv1103g-luckfox-pico-pro.dts
...

plus板设备树的继承关系：

我的板设备树的继承关系：

rv1103g-luckfox-pico-pro.dts相对于rv1103g-luckfox-pico-plus.dts的主要修改：

/**********spi nand flash**********/
&sfc {status = "okay";flash@0 {compatible = "spi-nand";reg = <0>;spi-max-frequency = <75000000>;spi-rx-bus-width = <4>;spi-tx-bus-width = <1>;};
};
/**********mmc interface for sd card**********/
&sdmmc {max-frequency = <50000000>;no-sdio;no-mmc;bus-width = <4>;cap-mmc-highspeed;cap-sd-highspeed;disable-wp;pinctrl-names = "default";pinctrl-0 = <&sdmmc0_clk &sdmmc0_cmd &sdmmc0_det &sdmmc0_bus4>;status = "okay";
};
/***********mmc interface for wifi**********/
&emmc {max-frequency = <50000000>;no-sdio;no-mmc;bus-width = <4>;cap-mmc-highspeed;cap-sd-highspeed;disable-wp;pinctrl-names = "default";pinctrl-0 = <&sdmmc1_clk &sdmmc1_cmd &sdmmc1_det &sdmmc1_bus4>;status = "okay";
};/**********ETH**********/
//&gmac {
//	status = "okay";
//};