Measurements with our MPC8544 board showed that the I2C bus frequency
is wrong by a factor of 1.5. Obviously, the interpretation of the
MPC85xx_PORDEVSR2_SEC_CFG bit of the cfg_sec_freq register is not
correct. There seems to be an error in the 8544 RM.
Signed-off-by: Wolfgang Grandegger <[EMAIL PROTECTED]>
---
cpu/mpc85xx/speed.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
Index: u-boot/cpu/mpc85xx/speed.c
===================================================================
--- u-boot.orig/cpu/mpc85xx/speed.c
+++ u-boot/cpu/mpc85xx/speed.c
@@ -101,9 +101,9 @@ int get_clocks (void)
* PORDEVSR2_SEC_CFG bit is 0 on all 85xx boards that are not an 8544.
*/
if (gur->pordevsr2 & MPC85xx_PORDEVSR2_SEC_CFG)
- gd->i2c1_clk = sys_info.freqSystemBus / 3;
- else
gd->i2c1_clk = sys_info.freqSystemBus / 2;
+ else
+ gd->i2c1_clk = sys_info.freqSystemBus / 3;
#else
/* Most 85xx SOCs use CCB/2, so this is the default behavior. */
gd->i2c1_clk = sys_info.freqSystemBus / 2;
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