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@01c50000 Waiting for PHY auto negotiation to complete......... TIMEOUT ! ethernet@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