diff options
Diffstat (limited to 'drivers/i2c')
| -rw-r--r-- | drivers/i2c/fsl_i2c.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/drivers/i2c/fsl_i2c.c b/drivers/i2c/fsl_i2c.c index 44b08f767..291ad946d 100644 --- a/drivers/i2c/fsl_i2c.c +++ b/drivers/i2c/fsl_i2c.c @@ -211,6 +211,14 @@ static int fsl_i2c_fixup(const struct fsl_i2c *dev) const unsigned long long timeout = usec2ticks(CONFIG_I2C_MBB_TIMEOUT); unsigned long long timeval = 0; int ret = -1; + unsigned int flags = 0; + +#ifdef CONFIG_SYS_FSL_ERRATUM_I2C_A004447 + unsigned int svr = get_svr(); + if ((SVR_SOC_VER(svr) == SVR_8548 && IS_SVR_REV(svr, 3, 1)) || + (SVR_REV(svr) <= CONFIG_SYS_FSL_A004447_SVR_REV)) + flags = I2C_CR_BIT6; +#endif writeb(I2C_CR_MEN | I2C_CR_MSTA, &dev->cr); @@ -224,8 +232,8 @@ static int fsl_i2c_fixup(const struct fsl_i2c *dev) /* SDA is stuck low */ writeb(0, &dev->cr); udelay(100); - writeb(I2C_CR_MSTA, &dev->cr); - writeb(I2C_CR_MEN | I2C_CR_MSTA, &dev->cr); + writeb(I2C_CR_MSTA | flags, &dev->cr); + writeb(I2C_CR_MEN | I2C_CR_MSTA | flags, &dev->cr); } readb(&dev->dr); @@ -238,7 +246,7 @@ static int fsl_i2c_fixup(const struct fsl_i2c *dev) ret = 0; err: - writeb(I2C_CR_MEN, &dev->cr); + writeb(I2C_CR_MEN | flags, &dev->cr); writeb(0, &dev->sr); udelay(100); |