[U-Boot] regarding u-boot ethernet support for TFTP boot in Banana pi R1 (Lamobo R1)

[Ramakrishnan Meenakshi Sundaram]

Thanks for your inputs Hans

I think you are referring to patches like
https://github.com/igorpecovnik/lib/blob/next/patch/bananapi-r1-next.patch
that add b53 driver support to mainline kernel.

I'll try to start working on it

thanks
Ram

On Wed, Aug 12, 2015 at 3:56 PM, Hans de Goede <hdegoede at redhat.com> wrote:

> Hi,
>
> On 12-08-15 10:26, ramki982 wrote:
>
>> Dear all,
>>
>> I've successfully compiled and running u-boot on the Bananapi R1 board
>> using
>> the instructions in http://linux-sunxi.org/Mainline_U-boot#Compile_U-Boot
>>
>> This board uses a BCM 53125 ethernet chip
>>
>> 4+1 ports 10/100/1000 Ethernet RJ45 (BCM 53125),
>> WLAN @802.11b/g/n (RTL8192CU) with 2x external antennas connectors
>>
>> But when I any try to run any NETWORK related command - i'm getting a "No
>> Link". I do have the ip add, gateway addr, net mask etc set as environment
>> variables.
>>
>> sunxi# ping 192.168.10.1
>> ethernet at 01c50000 Waiting for PHY auto negotiation to complete.........
>> TIMEOUT !
>> ethernet at 01c50000: No link.
>> ping failed; host 192.168.10.1 is not alive
>>
>
> The problem is that the R1 uses a broadcom switch chip rather then a
> regular
> ethernet phy, and neither u-boot nor the upstream kernel has support for
> this
> switch chip.
>
> So this is sortof expected behavior. There are kernel patches for adding
> support for the switch chip in question and people have successfully
> build upstream kernels with those patches.
>
> It might be interesting to write a small u-boot patch adding support for
> this switch chip, which simply enables all ports as normal (not part of a
> vlan)
> ports.
>
> Even if you only add proper kernel support, u-boot still needs to
> initialize
> the gmac, as the kernel does not know how to setup the gmac tx / rx clk
> delays,
> ideally someone would write a small kernel gmac clk driver patch to teach
> the
> kernel about this.
>
> Regards,
>
> Hans
>