MYZR-IMX6 L31452 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“$”开头的行，其后是Linux命令。 | 2）文档中所有的 Linux 命令建议手动输入到 Linux 主机执行（直接复制、粘贴到 Linux 主机上执行，可能会执行失败）。 | 3）文档中的 Linux 执行命令，如果空格后的下一个字符是“-”的（如：sudo apt-ge t –y install 之类的），请手动输入到 Linux 主机执行（直接复制、粘贴到 Linux 主机上 执行，通常会执行失败）。 | 4）文档中所有一行没写完的 Linux 命令请手动输入到 Linux 主机执行，（因为复制、粘 贴命令不能包含类似“换行符”之类的特殊字符）。 | 5）按文档输入并执行 Linux 命令时注意观察命令的执行结果与文档图片中的是否一致， 以确认命令是否输入有误及是否执行失败。 | 6）第一遍编译请严格按照文档进行，否则可能出现莫名其妙的错误。 截图说明 ~~~~~~~~~ | 为使视图看起来简洁整齐，截图中的命令提示符统一使用 myzr$。 图片中的 Linux 命令(Linux command in images) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | 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-3.14.52 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 | +--------------+--------------------------------------------------------------+-----------------------+ | LVDS | drivers/video/mxc/ldb.c | /dev/fb* | +--------------+--------------------------------------------------------------+-----------------------+ | 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/ | /dev/mmcblk* | +--------------+--------------------------------------------------------------+-----------------------+ | TOUCH SCREEN | drivers/input/touchscreen/myts-ft5x0x.c | /dev/input/event0 | +--------------+--------------------------------------------------------------+-----------------------+ | FEC | drivers/net/ethernet/freescale/fec_main.c | eth0 | +--------------+--------------------------------------------------------------+-----------------------+ | SMSC95XX | drivers/net/usb/smsc95xx.c | eth1 | +--------------+--------------------------------------------------------------+-----------------------+ | PWM | drivers/pwm/pwm-imx.c | /sys/class/pwm/ | +--------------+--------------------------------------------------------------+-----------------------+ | HDMI | drivers/mfd/mxc-hdmi-core.c | /dev/mxc_hdmi | + +--------------------------------------------------------------+ + | | driver/video/mxc/mxc_hdmi.c | | + +--------------------------------------------------------------+ + | | sound/soc/fsl/fsl_hdmi.c | | + +--------------------------------------------------------------+ + | | sound/soc/fsl/imx-hdmi-dma.c | | + +--------------------------------------------------------------+ + | | sound/soc/fsl/imx-hdmi.c | | + +--------------------------------------------------------------+ + | | drivers/mxc/hdmi-cec/mxc_hdmi-cec.c | | +--------------+--------------------------------------------------------------+-----------------------+ | IPU | drivers/mxc/ipu3/ | /dev/mxc_ipu | +--------------+--------------------------------------------------------------+-----------------------+ | GPU | drivers/mxc/gpu-viv/ | /dev/galcore | +--------------+--------------------------------------------------------------+-----------------------+ | VPU | drivers/mxc/vpu/ | /dev/mxc_vpu | +--------------+--------------------------------------------------------------+-----------------------+ | OV5642 | drivers/media/platform/mxc/capture/ov5642.c | /dev/video0 | +--------------+--------------------------------------------------------------+-----------------------+ | MIPI DSI | drivers/video/mxc/mipi_dsi.c | NC | +--------------+--------------------------------------------------------------+-----------------------+ | MIPI CSI2 | drivers/mxc/mipi/mxc_mipi_csi2.c | NC | +--------------+--------------------------------------------------------------+-----------------------+ | V4L2 | drivers/media/platform/mxc/ | NC | +--------------+--------------------------------------------------------------+-----------------------+ | PCIE | drivers/pci/host/pci-imx6.c | /sys/class/pci_bus | +--------------+--------------------------------------------------------------+-----------------------+ | SATA | drivers/ata/ahci_platform.c | /dev/sd* | + +--------------------------------------------------------------+ + | | driver/ata/ahci_imx.c | | + +--------------------------------------------------------------+ + | | drivers/ata/libahci_platform.c | | +--------------+--------------------------------------------------------------+-----------------------+ | WM8962 | sound/soc/codecs/wm8962.c | /dev/snd/ | + +--------------------------------------------------------------+ + | | sound/soc/fsl/imx-wm8962.c | | +--------------+--------------------------------------------------------------+-----------------------+ | ISL1208 | drivers/rtc/rtc-isl1208.c | /dev/rtc0 | +--------------+--------------------------------------------------------------+-----------------------+ | USB | drivers/usb/ | NC | +--------------+--------------------------------------------------------------+-----------------------+ | FLEXCAN | drivers/net/can/flexcan.c | can0,can1 | +--------------+--------------------------------------------------------------+-----------------------+ | WATCHDOG | drivers/watchdog/imx2_wdt.c | /dev/watchdog | +--------------+--------------------------------------------------------------+-----------------------+ | RTL8188 | drivers/net/wireless/realtek/rtl8188eu/v4.3.24/hal/rtl8188e/ | wlan0 | +--------------+--------------------------------------------------------------+-----------------------+ | EC20 | drivers/net/usb/ec20 | eth2 | +--------------+--------------------------------------------------------------+-----------------------+ | 设备树主文件：arch/arm/boot/dts/myimx6ek\*\*\*.dts ("\*\*\*"表示 200-6q-2g，200-6q，200-6qp，200-6s-1g，200-6s 和 200-6u；314-6q-2g，314-6q 和 314-6u) | 设备树注册信息文件：arch/arm/boot/dts/myimx6ek\*\*\*.dtsi ("\*\*\*"表示 200，314和 336) | 设备树管脚配置文件：arch/arm/boot/dts/myimx6ek\*\*\*-iomux.dtsi ("\*\*\*"表示 200，314和 336) | 管脚功能预定义文件：arch/arm/boot/dts/imx6*-pinfunc.h (“*”表示 q 或 dl) ``注意：想详细查看寄存器，请查看“IMX6DQRM_201806.pdf”文件。``