[OpenWrt-Devel] ramips: mtk_soc_eth vs old ralink ethernet driver for the M2M

[John Crispin]

i'll try to test during the day. i had tested most socs but apparently
5350 still has an issue.

On 19/12/2015 23:57, Christian Lamparter wrote:
> Hello,
> 
> I'm looking into a issue with M2M [0] (It's a RT5350 device).
> Currently, the sole ethernet - port on this device is not
> working. Instead during, I get the following messages on the serial:
> 
> "Failed to connect to the switch. Use the "list" command to see which switches are available."
> (probably caused by config - see extract from /etc/board.d/02_network [1])
> 
> which is followed by:
> WARNING: CPU: 0 PID: 76 at net/sched/sch_generic.c:303 dev_watchdog+0x1dc/0x260()
> NETDEV WATCHDOG: eth0 (mtk_soc_eth): transmit queue 0 timed out
> (usual stacktrace, etc... don't think that is important)
> 
> and:
> mtk_soc_eth 10100000.ethernet eth0: transmit timed out
> mtk_soc_eth 10100000.ethernet eth0: dma_cfg:00000057
> mtk_soc_eth 10100000.ethernet eth0: tx_ring=0, base=00c06000, max=128, ctx=3, dtx=1, fdx=1, next=3
> mtk_soc_eth 10100000.ethernet eth0: rx_ring=0, base=00c0a000, max=128, calc=127, drx=0
> ...
> 
> The device also fails to receive any packages.
> 
> Reverting back to to the old driver fixes the problem.
> [   40.635681] rt305x-esw 10110000.esw: link changed 0x00
> [   42.257831] rt305x-esw 10110000.esw: link changed 0x10
> 
> But this old driver is replaced by a new upstream driver (Yay!), 
> I really want to figure out what needs to be changed to get it
> working again. I've attached the ethernet portion of the M2M.dts
> [2]. Because I suspect its because of because mtk_soc_eth handles
> devices with no real switch (hence the "Failed to connect to the
> switch" messages) differently... and it was sort of an hack with
> the old driver anyways. Any ideas?
> 
> Regards,
> Christian
> 
> [0] <https://wiki.openwrt.org/toh/intenso/m2m>
> 
> [1] /etc/board.d/02_network entry for the m2m
>>        m2m)
>>               ucidef_add_switch "switch0"
>>               ucidef_add_switch_attr "switch0" "reset" "false"
>>               ucidef_set_interface_lan "eth0"
> 
> [2] /target/linux/ramips/dts/M2M.dts
>>        ethernet at 10100000 {
>>                mtd-mac-address = <&factory 0x28>;
>>        };
>>
>>        esw at 10110000 {
>>                mediatek,portmap = <0x2f>;
>>        };
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