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| author | Ben Warren <bwarren@qstreams.com> | 2006-09-07 16:51:04 -0400 |
|---|---|---|
| committer | Kim Phillips <kim.phillips@freescale.com> | 2006-11-03 19:42:19 -0600 |
| commit | b24f119d672b709d153ff2ac091d4aa63ec6877d (patch) | |
| tree | fd336614e7e0b3363512be41e501b6e9d6a5331a /include | |
| parent | bb99ad6d8257bf828f150d40f507b30d80a4a7ae (diff) | |
| download | u-boot-imx-b24f119d672b709d153ff2ac091d4aa63ec6877d.zip u-boot-imx-b24f119d672b709d153ff2ac091d4aa63ec6877d.tar.gz u-boot-imx-b24f119d672b709d153ff2ac091d4aa63ec6877d.tar.bz2 | |
Multi-bus I2C implementation of MPC834x
Hello,
Attached is a patch implementing multiple I2C buses on the MPC834x CPU
family and the MPC8349EMDS board in particular.
This patch requires Patch 1 (Add support for multiple I2C buses).
Testing was performed on a 533MHz board.
/*** Note: This patch replaces ticket DNX#2006083042000027 ***/
Signed-off-by: Ben Warren <bwarren@qstreams.com>
CHANGELOG:
Implemented driver-level code to support two I2C buses on the
MPC834x CPU family and the MPC8349EMDS board. Available I2C bus speeds
are 50kHz, 100kHz and 400kHz on each bus.
regards,
Ben
Diffstat (limited to 'include')
| -rw-r--r-- | include/asm-ppc/i2c.h | 21 | ||||
| -rw-r--r-- | include/configs/MPC8349EMDS.h | 6 |
2 files changed, 16 insertions, 11 deletions
diff --git a/include/asm-ppc/i2c.h b/include/asm-ppc/i2c.h index 2ae3367..baf9d9a 100644 --- a/include/asm-ppc/i2c.h +++ b/include/asm-ppc/i2c.h @@ -79,6 +79,12 @@ typedef struct i2c #endif #define I2C_TIMEOUT (CFG_HZ/4) +enum I2C_BUS_NUM +{ + I2C_BUS_1 = 0, + I2C_BUS_2, +}; + #ifndef CFG_IMMRBAR #error CFG_IMMRBAR is not defined in /include/configs/${BOARD}.h #endif @@ -87,15 +93,12 @@ typedef struct i2c #error CFG_I2C_OFFSET is not defined in /include/configs/${BOARD}.h #endif -#if defined(CONFIG_MPC8349EMDS) || defined(CONFIG_TQM834X) -/* - * MPC8349 have two i2c bus - */ -extern i2c_t * mpc83xx_i2c; -#define I2C mpc83xx_i2c -#else -#define I2C ((i2c_t*)(CFG_IMMRBAR + CFG_I2C_OFFSET)) -#endif +#define I2C_1 ((i2c_t*)(CFG_IMMRBAR + CFG_I2C_OFFSET)) + +/* Optional support for second I2C bus */ +#ifdef CFG_I2C2_OFFSET +#define I2C_2 ((i2c_t*)(CFG_IMMRBAR + CFG_I2C2_OFFSET)) +#endif /* CFG_I2C2_OFFSET */ #define I2C_READ 1 #define I2C_WRITE 0 diff --git a/include/configs/MPC8349EMDS.h b/include/configs/MPC8349EMDS.h index 66f1646..4d5ad57 100644 --- a/include/configs/MPC8349EMDS.h +++ b/include/configs/MPC8349EMDS.h @@ -35,7 +35,7 @@ * High Level Configuration Options */ #define CONFIG_E300 1 /* E300 Family */ -#define CONFIG_MPC83XX 1 /* MPC83XX family */ +#define CONFIG_MPC834X 1 /* MPC834X family */ #define CONFIG_MPC8349 1 /* MPC8349 specific */ #define CONFIG_MPC8349EMDS 1 /* MPC8349EMDS board specific */ @@ -311,9 +311,11 @@ /* I2C */ #define CONFIG_HARD_I2C /* I2C with hardware support*/ #undef CONFIG_SOFT_I2C /* I2C bit-banged */ +#define CONFIG_I2C_MULTI_BUS +#define CONFIG_I2C_CMD_TREE #define CFG_I2C_SPEED 400000 /* I2C speed and slave address */ #define CFG_I2C_SLAVE 0x7F -#define CFG_I2C_NOPROBES {0x69} /* Don't probe these addrs */ +#define CFG_I2C_NOPROBES {{0,0x69}} /* Don't probe these addrs */ #define CFG_I2C_OFFSET 0x3000 #define CFG_I2C2_OFFSET 0x3100 |