summaryrefslogtreecommitdiff
path: root/drivers
diff options
context:
space:
mode:
Diffstat (limited to 'drivers')
-rw-r--r--drivers/i2c/fsl_i2c.c14
1 files changed, 11 insertions, 3 deletions
diff --git a/drivers/i2c/fsl_i2c.c b/drivers/i2c/fsl_i2c.c
index 44b08f7..291ad94 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);