HI, I am trying to port U-BOOT to board with MPC8343 and I have problem with reading data from I2C. Iprobe command detects EEPROM memory but after imd 50 0 20 a read only 0xff values. In EEPROM memory is stored configuration words. And configuration word is strored properly because after unplug BDI board starts fine and we can reading memory via OS. I tryied to change SPEED too.
Best regards Michal Simek
#define CONFIG_HARD_I2C /* I2C with hardware support*/ #ifdef CONFIG_HARD_I2C #undef CONFIG_SOFT_I2C /* I2C bit-banged */ #define CONFIG_FSL_I2C #define CONFIG_I2C_MULTI_BUS #define CONFIG_I2C_CMD_TREE //#define CFG_I2C_SPEED 400000 /* I2C speed and slave address - 400kHz */ #define CFG_I2C_SPEED 100000 /* I2C speed and slave address - 100kHz */ #define CFG_I2C_SLAVE 0x7F #define CFG_I2C_OFFSET 0x3000 /* prvni I2C interface - posun od IMMR */ #define CFG_I2C2_OFFSET 0x3100 /* druhy I2C interface - posun od IMMR */ #define CFG_I2C_EEPROM_ADDR 0x50 /* I2C0, Board EEPROM */ #define CFG_I2C_EEPROM_ADDR_LEN 2 #endif
U-Boot 1.2.0 (Apr 23 2007 - 08:31:58) MPC83XX
Clock configuration: Coherent System Bus: 264 MHz Core: 396 MHz Local Bus Controller: 264 MHz Local Bus: 66 MHz DDR: 264 MHz SEC: 88 MHz I2C1: 88 MHz I2C2: 264 MHz TSEC1: 88 MHz TSEC2: 88 MHz USB MPH: 88 MHz USB DR: 88 MHz CPU: MPC8343E, Rev: 11 at 396 MHz
=> iprobe Valid chip addresses: 50 => imd 50 0 20 0000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................ 0010: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................ => imd 50.0 0 20 0000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................ 0010: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................ => imd 50.1 0 20 0000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................ 0010: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................ => imd 50.2 0 20 0000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................ 0010: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................ =>