Anyone, Recently I found that the value I was passing to Linux for the BUS CLK frequency was incorrect. Previously I was passing in from U-boot (66 * 1000 * 1000) 66Mhz, it had been brought up this can cause incorrect SOF transmission rates with the 82xx USB driver, so after measuring our 'exact' clock, I made the adjustment to ( 66,666,666 Hz ) 66.66Mhz .
Hoping this would correct the issue, however now I cannot run the serial console baud rate (on SMC2) any higher than 115200 without corruption, however 57600 works on. This worked great before I changed the U-boot BUS clock to the correct value. I did some math on the BRG calculations and with 66Mhz the BRG divisor is 17.8 I am assuming 17 gets written, and with 66.666Mhz then its 18.02 so thus 18 probably gets written. Should perhaps a constant minus 1 be added to the code? Using: U-boot 1.1.2 DENX Linux 2.4.25 Is anyone aware of similar issues, or are there bug fixes past the 2.4.25 Kernel for this? -Russ
