[U-Boot] [PATCH 2/3] fsl_i2c: Add CONFIG_FSL_I2C_CUSTOM_{DFSR/FDR}

Joakim Tjernlund
2009-09-17T09:07:16Z

Some boards need a higher DFSR value than the spec currently
recommends so give these boards the means to define there own.

For completeness, add CONFIG_FSL_I2C_CUSTOM_FDR too.

Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
---
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 56f9680..0c5f6be 100644
--- a/drivers/i2c/fsl_i2c.c
+++ b/drivers/i2c/fsl_i2c.c
@@ -172,14 +172,22 @@ static unsigned int set_i2c_bus_speed(const struct fsl_i2c *dev,
u8 fdr;
#ifdef __PPC__
u8 dfsr;
+#ifdef CONFIG_FSL_I2C_CUSTOM_DFSR
+ dfsr = CONFIG_FSL_I2C_CUSTOM_DFSR;
+#else
dfsr = fsl_i2c_speed_map[i].dfsr;
#endif
+ writeb(dfsr, &dev->dfsrr); /* set default filter */
+#endif
+#ifdef CONFIG_FSL_I2C_CUSTOM_FDR
+ fdr = CONFIG_FSL_I2C_CUSTOM_FDR;
+ speed = i2c_clk / divider; /* Fake something */
+#else
fdr = fsl_i2c_speed_map[i].fdr;
speed = i2c_clk / fsl_i2c_speed_map[i].divider;
- writeb(fdr, &dev->fdr); /* set bus speed */
-#ifdef __PPC__
- writeb(dfsr, &dev->dfsrr); /* set default filter */
#endif
+ writeb(fdr, &dev->fdr); /* set bus speed */
+
break;
}

--
1.6.4.3