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| author | Stefan Roese <sr@denx.de> | 2007-02-20 10:27:08 +0100 |
|---|---|---|
| committer | Stefan Roese <sr@denx.de> | 2007-02-20 10:27:08 +0100 |
| commit | 79b2d0bb2eae09602448f7a7cb56530d2f31e6c6 (patch) | |
| tree | ec226ccf8314e37981f946df4391446a6ff9dc11 /include/i2c.h | |
| parent | 7372ca68227930d03cffa548310524cad5b96733 (diff) | |
| download | blackbird-obmc-uboot-79b2d0bb2eae09602448f7a7cb56530d2f31e6c6.tar.gz blackbird-obmc-uboot-79b2d0bb2eae09602448f7a7cb56530d2f31e6c6.zip | |
[PATCH] PPC4xx: Add support for multiple I2C busses
This patch adds support for multiple I2C busses on the PPC4xx
platforms. Define CONFIG_I2C_MULTI_BUS in the board config file
to make use of this feature.
It also merges the 405 and 440 i2c header files into one common
file 4xx_i2c.h.
Also the 4xx i2c reset procedure is reworked since I experienced
some problems with the first access on the 440SPe Katmai board.
Signed-off-by: Stefan Roese <sr@denx.de>
Diffstat (limited to 'include/i2c.h')
| -rw-r--r-- | include/i2c.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/include/i2c.h b/include/i2c.h index a8f729afe0..54c6f9fbc6 100644 --- a/include/i2c.h +++ b/include/i2c.h @@ -46,6 +46,16 @@ */ #define I2C_RXTX_LEN 128 /* maximum tx/rx buffer length */ +#if defined(CONFIG_I2C_MULTI_BUS) +#define CFG_MAX_I2C_BUS 2 +#define I2C_GET_BUS() i2c_get_bus_num() +#define I2C_SET_BUS(a) i2c_set_bus_num(a) +#else +#define CFG_MAX_I2C_BUS 1 +#define I2C_GET_BUS() 0 +#define I2C_SET_BUS(a) +#endif + /* * Initialization, must be called once on start up, may be called * repeatedly to change the speed and slave addresses. |
