在你对应的machine配置里会执行“i2c_register_board_info”一个函数,它会将一个i2c_board_info的结构体注册进系统, 这个i2c_board_info的结构体里就描述了板载的所有I2C设备信息,如下例: view plaincopy to clipboardprint? static struct i2c_board_info littleton_i2c_board_info[] = { #if defined(CONFIG_PX...
i2c驱动通过设备树注册sys/bus/i2c/drivers下的设备名的方法如下在没有出现dts之前，linux会将一些板级信息写在arch/arm下和你的板所匹配的c文件里，一般定义一个struct i2c_board_info结构体，将i2c的地址以及i2c的名称信息写入到此结构体中。在出现了dts之后，为了去耦合，将这些的板级信息全部都定义...
1-0048 delete_device i2c-dev new_device power uevent 1-0068 device name of_node subsystem 再次查看总线,可以看到0x48设置为UU, 表示在使用中 pi@raspberrypi:/sys/class/i2c-adapter/i2c-1$i2cdetect -y10123456789a b c d e f00: -- -- -- -- -- -- -- -- -- -- -- -- --10: -...
百度爱采购为您找到183家最新的i2c设备/sys/bus/i2c/drivers/产品的详细参数、实时报价、行情走势、优质商品批发/供应信息,您还可以免费查询、发布询价信息等。
#ifdef CONFIG_SYS_I2C #ifdef CONFIG_SYS_I2C_LEGACY int cl_eeprom_read_mac_addr(uchar *buf, uint eeprom_bus); u32 cl_eeprom_get_board_rev(uint eeprom_bus); int cl_eeprom_get_product_name(uchar *buf, uint eeprom_bus); Expand Down 2 changes: 1 addition & 1 deletion 2 board/freesc...
devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/device:05 | | | |-- device:06 -> ../../../devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/device:05/device:06 | | | |-- device:07 -> ../../../devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/device:05/device:07 | | | |-- ...
return 0; } static int i2c_mux_disconnect_all(void) { struct i2c_bus_hose *i2c_bus_tmp = &i2c_bus[I2C_BUS]; int i; uint8_t buf = 0; if (I2C_ADAP->init_done == 0) return 0; return 0; } #endif /* * i2c_init_bus(): * --- @@ -200,29 +108,17 @@ int i2c_set...
i2cget is a small helper program to read registers visible through the I2C bus (or SMBus). OPTIONS -V Display the version and exit. -f Force access to the device
Hi, I have Cyclone 10 GX Dev Kit FPGA and I am using example design systemmax10 project to configuration of temperature sensor over i2c bus , I try
i2c_init_recovery(adap); /* create pre-declared device nodes */ of_i2c_register_devices(adap); i2c_acpi_register_devices(adap); i2c_acpi_install_space_handler(adap); if (adap->nr < __i2c_first_dynamic_bus_num) i2c_scan_static_board_info(adap); ...