[U-Boot] [PATCH] Add CONFIG_GMAC_TX_DELAY=4 for OlinuXino Lime2

[Michael Haas]

On 03/19/2016 10:32 AM, Hans de Goede wrote:
> Hi,
>
> On 19-03-16 09:39, François-David Collin wrote:
>> Hi,
>>
>> As I’m banging my head on this too, please allow me to provide some
>> details
>> I got two stable situations :
>> The Lime2 is connected directly to the Gbit interface of my laptop,
>> speed are OK:
>
> Michael Haas' work to debug this by looking at the phy registers
> seems to be the most promising so-far, the clk reg and axp209
> registers all seem to be identical between good and bad setups.
>
> Can you try to:
>
> 1) Stop the boot in u-boot (press a key on the serial console)
> 2) Bring up the network, e.g. type "dhcp" then ctrl+c when it tries
> to tftp
> 3) Do: "mii read 1 0x11" in u-boot and record the output ?
>
> Regards,
>
> Hans


I am currently (as I write this email) looking at the full set of
registers for the PHY, including the additional
pages:

setenv miipagedump 'for page in 0x0 0x01 0x02 0x03 0x04 0x05 0x06 0x07;
do echo "page $page"; mii write 1 0x1f $page; run miidump; done; mii
write 1 0x1f 0x00'


setenv miireadable 'setenv x 0x0; while test $x -le 5; do echo $x; mii
dump 1 $x; setexpr x $x + 1; done'
setenv miidump 'setenv x 0x0; while test $x -le 31; do echo $x; mii read
1 $x; setexpr x $x + 1; done'
setenv pmicdump 'i2c md 0x34 0xff'
setenv clkdump 'md 0x1c20164'

setenv doboot 'run pmicdump; run clkdump; setenv bootargs
console=ttyS0,115200 rootwait panic=10; setenv autoload no;dhcp; run
miireadable; run miipagedump; setenv serverip 192.168.1.170;tftpboot
${scriptaddr} /debian-installer/armhf/tftpboot.scr;source ${scriptaddr}'


No results as of yet, but I have yet to do a run where I successfully
dump all extpages.. the script was off before hand. Some registers were
different between working and non-working runs, but these were mostly
reserved. I will be posting a full log later on.

Interesting: 01c20224 is 14888022 for broken runs and 14888021 on
working runs - but I have not verified this extensively.

I'm hanging out as 'laga' in #u-boot.

Michael

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