ppc4xx: Fix i2c divisor calcularion for PPC4xx
This patch fixes changes the i2c_init(...) function to use the function
get_OPB_freq() rather than calculating the OPB speed by
sysInfo.freqPLB/sysInfo.pllOpbDiv. The get_OPB_freq() function is
specific per processor. The prior method was not and so was calculating
the wrong speed for some PPC4xx processors.
Signed-off-by: Jeffrey Mann <mannj@embeddedplanet.com>
Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/cpu/ppc4xx/i2c.c b/cpu/ppc4xx/i2c.c
index 8f4da86..47c264e 100644
--- a/cpu/ppc4xx/i2c.c
+++ b/cpu/ppc4xx/i2c.c
@@ -91,7 +91,6 @@
void i2c_init(int speed, int slaveadd)
{
- sys_info_t sysInfo;
unsigned long freqOPB;
int val, divisor;
int bus;
@@ -124,8 +123,7 @@
/* Clock divide Register */
/* get OPB frequency */
- get_sys_info(&sysInfo);
- freqOPB = sysInfo.freqPLB / sysInfo.pllOpbDiv;
+ freqOPB = get_OPB_freq();
/* set divisor according to freqOPB */
divisor = (freqOPB - 1) / 10000000;
if (divisor == 0)