From e739bc95797aac4fefc4c75b55c7c78e59d3ea9c Mon Sep 17 00:00:00 2001 From: Timur Tabi <timur@freescale.com> Date: Tue, 3 Jul 2007 13:46:32 -0500 Subject: [PATCH] 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> --- drivers/fsl_i2c.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/fsl_i2c.c b/drivers/fsl_i2c.c index ebae5af154..22485ea916 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 */ -- 2.39.5