diff options
Diffstat (limited to 'include/configs/bf533-stamp.h')
| -rw-r--r-- | include/configs/bf533-stamp.h | 48 |
1 files changed, 43 insertions, 5 deletions
diff --git a/include/configs/bf533-stamp.h b/include/configs/bf533-stamp.h index e3344e9..7144c63 100644 --- a/include/configs/bf533-stamp.h +++ b/include/configs/bf533-stamp.h @@ -14,7 +14,6 @@ #define CONFIG_BFIN_CPU bf533-0.3 #define CONFIG_BFIN_BOOT_MODE BFIN_BOOT_BYPASS - /* * Clock Settings * CCLK = (CLKIN * VCO_MULT) / CCLK_DIV @@ -38,7 +37,6 @@ /* Values can range from 1-15 */ #define CONFIG_SCLK_DIV 6 /* note: 1.2 boards can go faster */ - /* * Memory Settings */ @@ -74,6 +72,42 @@ /* #define CONFIG_ETHADDR 02:80:ad:20:31:b8 */ +/* I2C */ +#define CONFIG_SYS_I2C +#define CONFIG_SYS_I2C_SOFT /* I2C bit-banged */ +#define CONFIG_SYS_I2C_SOFT_SPEED 50000 +#define CONFIG_SYS_I2C_SOFT_SLAVE 0 +/* + * Software (bit-bang) I2C driver configuration + */ +#define PF_SCL PF3 +#define PF_SDA PF2 +#define I2C_INIT (*pFIO_DIR |= PF_SCL); asm("ssync;") +#define I2C_ACTIVE (*pFIO_DIR |= PF_SDA); \ + *pFIO_INEN &= ~PF_SDA; asm("ssync;") +#define I2C_TRISTATE (*pFIO_DIR &= ~PF_SDA); \ + *pFIO_INEN |= PF_SDA; asm("ssync;") +#define I2C_READ ((volatile)(*pFIO_FLAG_D & PF_SDA) != 0); \ + asm("ssync;") +#define I2C_SDA(bit) if (bit) { \ + *pFIO_FLAG_S = PF_SDA; \ + asm("ssync;"); \ + } \ + else { \ + *pFIO_FLAG_C = PF_SDA; \ + asm("ssync;"); \ + } +#define I2C_SCL(bit) if (bit) { \ + *pFIO_FLAG_S = PF_SCL; \ + asm("ssync;"); \ + } \ + else { \ + *pFIO_FLAG_C = PF_SCL; \ + asm("ssync;"); \ + } +#define I2C_DELAY udelay(5) /* 1/4 I2C clock duration */ + + /* * Flash Settings */ @@ -84,7 +118,6 @@ #define CONFIG_SYS_MAX_FLASH_BANKS 1 #define CONFIG_SYS_MAX_FLASH_SECT 67 - /* * SPI Settings */ @@ -132,10 +165,15 @@ /* * I2C Settings */ -#define CONFIG_SOFT_I2C +#define CONFIG_SYS_I2C_SOFT +#ifdef CONFIG_SYS_I2C_SOFT +#define CONFIG_SYS_I2C #define CONFIG_SOFT_I2C_GPIO_SCL GPIO_PF3 #define CONFIG_SOFT_I2C_GPIO_SDA GPIO_PF2 - +#define I2C_DELAY udelay(5) /* 1/4 I2C clock duration */ +#define CONFIG_SYS_I2C_SOFT_SPEED 50000 +#define CONFIG_SYS_I2C_SOFT_SLAVE 0 +#endif /* * Compact Flash / IDE / ATA Settings |