[U-Boot] [PATCH 2/2][for v2008.10] 85xx: Using proper I2C source clock divider for MPC8544

Wolfgang Grandegger wg at grandegger.com
Fri Oct 17 11:55:16 CEST 2008


Hi Kumar,

Kumar Gala wrote:
> The MPC8544 RM incorrect shows the SEC_CFG bit in PORDEVSR2 as being
> bit 26, instead it should be bit 28.  This caused in incorrect
> interpretation of the i2c_clk which is the same as the SEC clk on
> MPC8544.  The SEC clk is controlled by cfg_sec_freq that is reported
> in PORDEVSR2.
> 
> Signed-off-by: Kumar Gala <galak at kernel.crashing.org>

That makes sense now. I just got the confirmation from the customer,
that LWE_B[0] is indeed pulled down via FPGA:

  LWE_B[0]      Pulldown       SEC Frequency Ratio 2:1

Thanks for your investigations.

Wolfgang.


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