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| author | Mike Frysinger <vapier@gentoo.org> | 2008-10-06 04:16:47 -0400 |
|---|---|---|
| committer | Mike Frysinger <vapier@gentoo.org> | 2009-01-28 13:26:13 -0500 |
| commit | be853bf86b41e91f4c422f0f56fdf87ea3191266 (patch) | |
| tree | 5832190e4ecc4760809b9d273c08a2d524fd0541 /include/configs/bf537-stamp.h | |
| parent | b6edc719a106ab7fa6e6950b4d97bc39c1368e45 (diff) | |
| download | blackbird-obmc-uboot-be853bf86b41e91f4c422f0f56fdf87ea3191266.tar.gz blackbird-obmc-uboot-be853bf86b41e91f4c422f0f56fdf87ea3191266.zip | |
Blackfin: overhaul i2c driver
The current Blackfin i2c driver does not work properly with certain devices
due to it breaking up transfers incorrectly. This is a rewrite of the
driver and relocates it to the newer place in the source tree.
Also remove duplicated I2C speed defines in Blackfin board configs and
disable I2C slave address usage since it isn't implemented.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Diffstat (limited to 'include/configs/bf537-stamp.h')
| -rw-r--r-- | include/configs/bf537-stamp.h | 43 |
1 files changed, 4 insertions, 39 deletions
diff --git a/include/configs/bf537-stamp.h b/include/configs/bf537-stamp.h index ac5aaa59ae..27567faab2 100644 --- a/include/configs/bf537-stamp.h +++ b/include/configs/bf537-stamp.h @@ -305,13 +305,11 @@ /* * I2C settings - * By default PF1 is used as SDA and PF0 as SCL on the Stamp board */ -/* #define CONFIG_SOFT_I2C 1*/ /* I2C bit-banged */ -#define CONFIG_HARD_I2C 1 /* I2C TWI */ -#if defined CONFIG_HARD_I2C -#define CONFIG_TWICLK_KHZ 50 -#endif +#define CONFIG_HARD_I2C 1 +#define CONFIG_BFIN_TWI_I2C 1 +#define CFG_I2C_SPEED 50000 +#define CFG_I2C_SLAVE 0 #define CONFIG_EBIU_SDRRC_VAL 0x306 #define CONFIG_EBIU_SDGCTL_VAL 0x91114d @@ -321,39 +319,6 @@ #define CONFIG_EBIU_AMBCTL0_VAL 0x7BB07BB0 #define CONFIG_EBIU_AMBCTL1_VAL 0xFFC27BB0 -#if defined CONFIG_SOFT_I2C -/* - * Software (bit-bang) I2C driver configuration - */ -#define PF_SCL PF0 -#define PF_SDA PF1 - -#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 */ -#endif - -#define CONFIG_SYS_I2C_SPEED 50000 -#define CONFIG_SYS_I2C_SLAVE 0xFE - /* 0xFF, 0x7BB07BB0, 0x22547BB0 */ /* #define AMGCTLVAL (AMBEN_P0 | AMBEN_P1 | AMBEN_P2 | AMCKEN) #define AMBCTL0VAL (B1WAT_7 | B1RAT_11 | B1HT_2 | B1ST_3 | B1TT_4 | ~B1RDYPOL | \ |
