Hi,
On 17-03-16 06:28, Michael Haas wrote:
Hello all,
On 03/16/2016 09:36 PM, Karsten Merker wrote:
Michael, if you would like to try testing higher RX delay chain values on the Lime2, I have attached a small patch that adds an appropriate Kconfig option. Regards, Karsten
I will be testing your patch along with Hans' patch. In fact, I have already compiled it - I'm just waiting for a new SD card reader to arrive tomorrow. Sorry for the delay.
In the mean time, as I was trying to get the device to boot at all (not related to u-boot, just my broken sdcard setup), I did try my old SD card again to load the debian netinstaller. This should be the version with the TX_DELAY set to 4.
Now I'm sitting in an ash shell and I can wget files from my desktop at around 100MB/s.
~ # wget http://192.168.1.170:8000/debian-8.3.0-i386-netinst.iso -O - | md5sum Connecting to 192.168.1.170:8000 (192.168.1.170:8000)
100% |*******************************| 315M0:00:00 ETA 37f329724a1c072cbe0ebda211fdeb88 - ~ # wget http://192.168.1.170:8000/debian-8.3.0-i386-netinst.iso -O - | md5sum Connecting to 192.168.1.170:8000 (192.168.1.170:8000)
100% |*******************************| 315M0:00:00 ETA 37f329724a1c072cbe0ebda211fdeb88 -
~ # date +%s; wget http://192.168.1.170:8000/debian-8.3.0-i386-netinst.iso -O /d ev/null; date +%s 1258 Connecting to 192.168.1.170:8000 (192.168.1.170:8000) null 100% |*******************************| 315M 0:00:00 ETA 1261
~ # dmesg | grep -i link [ 1.504918] audit: initializing netlink subsys (disabled) [ 88.561822] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready [ 90.547368] sun7i-dwmac 1c50000.ethernet eth0: Link is Up - 1Gbps/Full - flow control rx/tx [ 90.547424] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
~ # cat /etc/lsb-release DISTRIB_ID=Debian DISTRIB_DESCRIPTION="Debian GNU/Linux installer" DISTRIB_RELEASE="9 (stretch) - installer build 20160316-00:13" X_INSTALLATION_MEDIUM=netboot ~ # uname -a Linux debian 4.4.0-1-armmp #1 SMP Debian 4.4.4-2 (2016-03-09) armv7l GNU/Linux
It takes around three seconds (date +%s; time not set) to transfer the 315MB. The md5sum matches.
Now, with the device sitting on my desk in a debian installer session and working gbit.. how do I proceed from here? I don't dare rebooting..
There are 3 things which would be interesting to save and compare with a boot which does have the problem:
1) The gmc clk register, to do this download mmio_dump from:
https://fedorapeople.org/~jwrdegoede/mmio-dump
And as root run:
./mmio-dump 0x1c20164
And record the output
This is a statically linked binary (I use it on android) so it should work fine. If you don't like running $random binaries of the internet, you can find the c-code here:
https://fedorapeople.org/~jwrdegoede/mmio-dump.c
Compile this (on the arm-system) with:
gcc -o mmio-dump mmio-dump.c
2) The pmic settings for various ldo-s, etc. as root run:
i2cdump -f -y 0 0x34
And record the output. You may need to install i2c-tools (or the deb. alternative) and do "modprobe i2c_dev"
3) The phy settings, unfortunately I do not know of a way to dump these, so lets just forget about these and focus on the other 2.
Regards,
Hans
Best
Michael