In message 66FC73FC-9476-11D8-A48D-000393DBC2E8@motorola.com you wrote:
I was wondering if there where an examples in the current u-boot source tree in which CONFIG_SYS_CLK_FREQ was determined dynamically. I have a
Not exactly for CONFIG_SYS_CLK_FREQ - but the TQM8xxL boards contain code to measure the input clock against the (known) 32kHz clock.
system in which I can read a config register on the board to let me know if the CONFIG_SYS_CLK_FREQ is 66Mhz or 33Mhz. I was hoping to have the 16550 uart (and anything else) that needed CONFIG_SYS_CLK_FREQ grab it from a variable instead.
If you provide a suitable init fuction which sets the value in the global data section eraly enough, you can probably shortcut the use of CONFIG_SYS_CLK_FREQ.
This is on an MPC85xx platform system.
...or any other.
Best regards,
Wolfgang Denk