diff options
Diffstat (limited to 'include/configs/TQM855M.h')
| -rw-r--r-- | include/configs/TQM855M.h | 36 |
1 files changed, 35 insertions, 1 deletions
diff --git a/include/configs/TQM855M.h b/include/configs/TQM855M.h index e926d933c..cb4a16abd 100644 --- a/include/configs/TQM855M.h +++ b/include/configs/TQM855M.h @@ -1,5 +1,5 @@ /* - * (C) Copyright 2000-2003 + * (C) Copyright 2000-2004 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. * * See file CREDITS for list of people who contributed to this @@ -83,6 +83,39 @@ #undef CONFIG_CAN_DRIVER /* CAN Driver support disabled */ +/* enable I2C and select the hardware/software driver */ +#undef CONFIG_HARD_I2C /* I2C with hardware support */ +#define CONFIG_SOFT_I2C 1 /* I2C bit-banged */ + +#define CFG_I2C_SPEED 93000 /* 93 kHz is supposed to work */ +#define CFG_I2C_SLAVE 0xFE + +#ifdef CONFIG_SOFT_I2C +/* + * Software (bit-bang) I2C driver configuration + */ +#define PB_SCL 0x00000020 /* PB 26 */ +#define PB_SDA 0x00000010 /* PB 27 */ + +#define I2C_INIT (immr->im_cpm.cp_pbdir |= PB_SCL) +#define I2C_ACTIVE (immr->im_cpm.cp_pbdir |= PB_SDA) +#define I2C_TRISTATE (immr->im_cpm.cp_pbdir &= ~PB_SDA) +#define I2C_READ ((immr->im_cpm.cp_pbdat & PB_SDA) != 0) +#define I2C_SDA(bit) if(bit) immr->im_cpm.cp_pbdat |= PB_SDA; \ + else immr->im_cpm.cp_pbdat &= ~PB_SDA +#define I2C_SCL(bit) if(bit) immr->im_cpm.cp_pbdat |= PB_SCL; \ + else immr->im_cpm.cp_pbdat &= ~PB_SCL +#define I2C_DELAY udelay(2) /* 1/4 I2C clock duration */ +#endif /* CONFIG_SOFT_I2C */ + +#define CFG_I2C_EEPROM_ADDR 0x50 /* EEPROM AT24C64 */ +#define CFG_I2C_EEPROM_ADDR_LEN 2 /* two byte address */ +#if 0 +#define CFG_EEPROM_PAGE_WRITE_DELAY_MS 10 /* takes up to 10 msec */ +#define CFG_I2C_EEPROM_ADDR_OVERFLOW 0x01 +#define CFG_EEPROM_PAGE_WRITE_BITS 5 +#endif + #define CONFIG_BOOTP_MASK (CONFIG_BOOTP_DEFAULT | CONFIG_BOOTP_BOOTFILESIZE) #define CONFIG_MAC_PARTITION @@ -93,6 +126,7 @@ #define CONFIG_COMMANDS ( CONFIG_CMD_DFL | \ CFG_CMD_ASKENV | \ CFG_CMD_DHCP | \ + CFG_CMD_EEPROM | \ CFG_CMD_IDE | \ CFG_CMD_DATE ) |