Wolfgang Denk wrote:
In message 40629804.5060107@staubli.com you wrote:
The attached patch fixes the FEC problems on my Lite5200 board. The network is working without any problems at 10 and 100Mb. The auto-negociation works too.
If CONFIG_FEC_10MBIT is defined, the FEC works at 10Mb with Half-Duplex. If CONFIG_FEC_10MBIT is undefined, the MII reads its configuration from hardware and uses the auto-negociation for determining network speed. The patch undefines CONFIG_FEC_10MBIT for the Lite5200.
Does it work for the other MPC5xxx boards ?
From what we saw, the FEC driver in U-Boot used to work quite stably, until the IDE support was added. May be that was just a coincidence, but it seems obvious to me that something changed in U-Boot recently that broke the FEC driver. It is possible that "something" was not the IDE support in fact, but yet something else.
On my side, I had the timeouts problems on tftp transferts from the begining. IDE support didn't change anything, the problem exists before.
The MII initialization code used to work fine for us, as far as we were able to tell. Without having investigated this more closely, I will not check in this patch as I feel it might just fix some symptoms.
For me, this init is useless, the MII takes its configuration from hardware. On MPC8xx boards, there's no such init sequence and FEC works fine for all boards.
Best regards,
Wolfgang Denk
Best regards