MYZR-IMX6-EK140 L40988 驱动和设备 =================================== 文档说明 --------- 系统环境说明 ~~~~~~~~~~~~~ - 编译主机CPU架构：64位 - 编译主机系统：Linux - Linux发行版：Ubuntu - Ubuntu版本类型：服务器版 - Ubuntu版本号：14.04.1 - Ubuntu系统类型：x86-64 ``注意：开发主机请使用ubuntu 14.04.1 x86-64（桌面版或服务器版均可），使用其他发行版的Linux或Ubuntu的其它版本可能会遇到的不必要的问题。`` 操作说明 ~~~~~~~~~ | 1）文档中以“$”开头的行，其后是Linux命令。 | 2）文档中所有的Linux命令建议手动输入到Linux主机执行（直接复制、粘贴到Linux主机上执行，可能会执行失败）。 | 3）文档中的Linux执行命令，如果空格后的下一个字符是“-”的（如：sudo apt-get –y install之类的），请手动输入到Linux主机执行（直接复制、粘贴到Linux主机上执行，通常会执行失败）。 | 4）文档中所有一行没写完的Linux命令请手动输入到Linux主机执行，（因为复制、粘贴命令不能包含类似“换行符”之类的特殊字符）。 | 5）按文档输入并执行Linux命令时注意观察命令的执行结果与文档图片中的是否一致，以确认命令是否输入有误及是否执行失败。 | 6）第一遍编译请严格按照文档进行，否则可能出现莫名其妙的错误。 截图说明 ~~~~~~~~~ | 为使视图看起来简洁整齐，截图中的命令提示符统一使用myzr$。 图片中的Linux命令 ~~~~~~~~~~~~~~~~~~ | 在文档的图片中观察“linyn@u14041-serv:~$”开头的行可以直观的看到输入的linux命令。 驱动及相关设备文件 ~~~~~~~~~~~~~~~~~~ | 评估板对应的Linux-4.1.15版本及对应的源码文件和设备见下表： +--------------+----------------------------------------------------------------+-----------------------------------------+ | 功能 | 源码位置 | Linux 设备和文件夹 | +==============+================================================================+=========================================+ | GPIO | drivers/gpio/gpio-mxc.c | /sys/class/gpio/ | + +----------------------------------------------------------------+ + | | drivers/gpio/gpiolib.c | | +--------------+----------------------------------------------------------------+-----------------------------------------+ | LED | drivers/leds/leds-gpio.c | /sys/class/leds/ | +--------------+----------------------------------------------------------------+-----------------------------------------+ | BUTTON | drivers/input/keyboard/gpio_keys.c | /dev/input/event1 | +--------------+----------------------------------------------------------------+-----------------------------------------+ | LCD | drivers/video/mxc/mxc_lcdif.c | /dev/fb* | +--------------+----------------------------------------------------------------+-----------------------------------------+ | BACKLIGHT | drivers/video/backlight/pwm_bl.c | /sys/class/backlight | +--------------+----------------------------------------------------------------+-----------------------------------------+ | UART | drivers/tty/serial/imx.c | /dev/ttymxc* | +--------------+----------------------------------------------------------------+-----------------------------------------+ | I2C | drivers/i2c/busses/i2c-imx.c | /dev/i2c-* | +--------------+----------------------------------------------------------------+-----------------------------------------+ | SPI | drivers/spi/spidev.c | /dev/spidev* | +--------------+----------------------------------------------------------------+-----------------------------------------+ | MMC/SD/SDIO | drivers/mmc/host/ | /sys/bus/mmc/ | +--------------+----------------------------------------------------------------+-----------------------------------------+ | TOUCH SCREEN | drivers/input/touchscreen/myts-ft5x0x.c | /dev/input/event0 | +--------------+----------------------------------------------------------------+-----------------------------------------+ | FEC | drivers/net/ethernet/freescale/fec_main.c | eth0,eth1 | +--------------+----------------------------------------------------------------+-----------------------------------------+ | PWM | drivers/pwm/pwm-imx.c | /sys/class/pwm | +--------------+----------------------------------------------------------------+-----------------------------------------+ | OV5642 | drivers/media/platform/mxc/capture/ov5642.c | /dev/video* | +--------------+----------------------------------------------------------------+-----------------------------------------+ | V4L2 | drivers/media/platform/mxc/ | NC | +--------------+----------------------------------------------------------------+-----------------------------------------+ | WM8960 | sound/soc/codecs/wm8960.c | /dev/snd | +--------------+----------------------------------------------------------------+-----------------------------------------+ | ISL1208 | drivers/rtc/rtc-isl1208.c | /dev/rtc0 | +--------------+----------------------------------------------------------------+-----------------------------------------+ | USB | drivers/usb/ | /sys/bus/usb/ | +--------------+----------------------------------------------------------------+-----------------------------------------+ | FLEXCAN | drivers/net/can/flexcan.c | can0,can1 | +--------------+----------------------------------------------------------------+-----------------------------------------+ | WATCHDOG | drivers/watchdog/imx2_wdt.c | /dev/watchdog | +--------------+----------------------------------------------------------------+-----------------------------------------+ | ADC | drivers/iio/adc/vf610_adc.c | /sys/bus/iio/devices/iio:device0 | +--------------+----------------------------------------------------------------+-----------------------------------------+ | FXLS8471 | drivers/input/misc/fxls8471.c | /sys/class/misc/FreescaleAccelerometer/ | +--------------+----------------------------------------------------------------+-----------------------------------------+ | FXAS2100 | drivers/misc/fxas2100x.c | /dev/input/eventX | +--------------+----------------------------------------------------------------+-----------------------------------------+ | RTL8188EUS | /drivers/net/wireless/realtek/rtl8188eu/v5.2.2.4/hal/rtl8188e/ | wlan0 | +--------------+----------------------------------------------------------------+-----------------------------------------+ | EC20 | drivers/net/usb/ec20/ | eth2 | +--------------+----------------------------------------------------------------+-----------------------------------------+ - 设备树主文件：arch/arm/boot/dts/myimx6ek\*\*\*-emmc.dts(或者是arch/arm/boot/dts/myimx6ek\*\*\*-nand.dts)("\*\*\*"表示 140p-6g-128m，140p-6g-256m，140p-6g-512m，140p-6y-128m，140p-6y-256m , 140p-6y-512m,140-6g-128m，140-6g-256m，140-6g-512m，140-6y-128m，140-6y-256m 和 140-6y-512m) - 设备树注册信息文件：arch/arm/boot/dts/myimx6ek\*\*\*.dtsi ("\*\*\*"表示 140，140p) - 设备树管脚配置文件：arch/arm/boot/dts/myimx6ek\*\*\*-iomuxc.dtsi ("\*\*\*"表示 140，140p) - 管脚功能预定义文件：arch/arm/boot/dts/imx6*-pinfunc.h(“*”表示 ul 或 ull) - 双以太网配置文件：arch/arm/boot/dts/myimx6a7-enet4enet.dtsi - 一个以太网与八个串口配置文件：arch/arm/boot/dts/myimx6a7-enet4uart.dtsi - lcd 480*272配置文件：arch/arm/boot/dts/myimx6a7-lcd4wqvga.dtsi - lcd 800*480配置文件：arch/arm/boot/dts/myimx6a7-lcd4wvga.dtsi ``注意：想详细查看寄存器，请查看“IMX6ULLRM_201711.pdf”或“IMX6ULRM_201604.pdf”文件。``