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| author | Timur Tabi <timur@freescale.com> | 2007-07-03 13:46:32 -0500 |
|---|---|---|
| committer | Kim Phillips <kim.phillips@freescale.com> | 2007-08-10 01:12:03 -0500 |
| commit | e739bc95797aac4fefc4c75b55c7c78e59d3ea9c (patch) | |
| tree | d5952cca055ef3f319d69b2c7b14ac6cb70b6f4e /drivers/fsl_i2c.c | |
| parent | df33f6b4d6d63693dd9200808b242de1b86cb8e8 (diff) | |
| download | u-boot-imx-e739bc95797aac4fefc4c75b55c7c78e59d3ea9c.zip u-boot-imx-e739bc95797aac4fefc4c75b55c7c78e59d3ea9c.tar.gz u-boot-imx-e739bc95797aac4fefc4c75b55c7c78e59d3ea9c.tar.bz2 | |
FSL I2C driver programs the two I2C busses differently
The i2c_init() function in fsl_i2c.c programs the two I2C busses differently.
The second I2C bus has its slave address programmed incorrectly and is
missing a 5-us delay.
Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Diffstat (limited to 'drivers/fsl_i2c.c')
| -rw-r--r-- | drivers/fsl_i2c.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/fsl_i2c.c b/drivers/fsl_i2c.c index ebae5af..22485ea 100644 --- a/drivers/fsl_i2c.c +++ b/drivers/fsl_i2c.c @@ -69,9 +69,10 @@ i2c_init(int speed, int slaveadd) dev = (struct fsl_i2c *) (CFG_IMMR + CFG_I2C2_OFFSET); writeb(0, &dev->cr); /* stop I2C controller */ + udelay(5); /* let it shutdown in peace */ writeb(0x3F, &dev->fdr); /* set bus speed */ writeb(0x3F, &dev->dfsrr); /* set default filter */ - writeb(slaveadd, &dev->adr); /* write slave address */ + writeb(slaveadd << 1, &dev->adr); /* write slave address */ writeb(0x0, &dev->sr); /* clear status register */ writeb(I2C_CR_MEN, &dev->cr); /* start I2C controller */ #endif /* CFG_I2C2_OFFSET */ |