<div dir="ltr">Hi Kyosti,<div> Sorry, I reread your first reply and it became clear what you meant when looking on the Chomebox's /var/log directory. I found the port at the back corner of the Chromebox is numbered 2-1.2. None of the external ports connect as 1-1.2. Connecting the phone with the EHCI debug device enabled kernel to the 2-1.2 port and booting Ubuntu on the Chromebox I see the following in kmesg:</div>
<div><br></div><div><span style="background-color:transparent;color:rgb(0,0,0);font-family:Arial;font-size:15px;white-space:pre-wrap;line-height:1.15">[ 2.008799] usb 2-1.2: new high-speed USB device number 3 using ehci_hcd</span></div>
<span id="docs-internal-guid-1c405c1d-e784-c222-1839-6289307b0f66"><p dir="ltr" style="line-height:1.15;margin-top:0pt;margin-bottom:0pt"><span style="font-size:15px;font-family:Arial;color:rgb(0,0,0);background-color:transparent;vertical-align:baseline;white-space:pre-wrap">[ 2.031628] atkbd serio0: atkbd: SETLEDS failed</span></p>
<p dir="ltr" style="line-height:1.15;margin-top:0pt;margin-bottom:0pt"><span style="font-size:15px;font-family:Arial;color:rgb(0,0,0);background-color:transparent;vertical-align:baseline;white-space:pre-wrap">[ 2.049059] init: plymouth main process (93) killed by ABRT signal</span></p>
<p dir="ltr" style="line-height:1.15;margin-top:0pt;margin-bottom:0pt"><span style="font-size:15px;font-family:Arial;color:rgb(0,0,0);background-color:transparent;vertical-align:baseline;white-space:pre-wrap">[ 2.049409] init: plymouth-splash main process (398) terminated with status 2</span></p>
<p dir="ltr" style="line-height:1.15;margin-top:0pt;margin-bottom:0pt"><span style="font-size:15px;font-family:Arial;color:rgb(0,0,0);background-color:transparent;vertical-align:baseline;white-space:pre-wrap">[ 2.094946] usb 2-1.2: unable to read config index 0 descriptor/start: -32</span></p>
<p dir="ltr" style="line-height:1.15;margin-top:0pt;margin-bottom:0pt"><span style="font-size:15px;font-family:Arial;color:rgb(0,0,0);background-color:transparent;vertical-align:baseline;white-space:pre-wrap">[ 2.097301] usb 2-1.2: chopping to 0 config(s)</span></p>
<p dir="ltr" style="line-height:1.15;margin-top:0pt;margin-bottom:0pt"><span style="font-size:15px;font-family:Arial;color:rgb(0,0,0);background-color:transparent;vertical-align:baseline;white-space:pre-wrap">[ 2.099611] usb 2-1.2: New USB device found, idVendor=0525, idProduct=c0de</span></p>
<p dir="ltr" style="line-height:1.15;margin-top:0pt;margin-bottom:0pt"><span style="font-size:15px;font-family:Arial;color:rgb(0,0,0);background-color:transparent;vertical-align:baseline;white-space:pre-wrap">[ 2.099615] usb 2-1.2: New USB device strings: Mfr=0, Product=0, SerialNumber=0</span></p>
<p dir="ltr" style="line-height:1.15;margin-top:0pt;margin-bottom:0pt"><span style="font-size:15px;font-family:Arial;color:rgb(0,0,0);background-color:transparent;vertical-align:baseline;white-space:pre-wrap">[ 2.100136] usb 2-1.2: no configuration chosen from 0 choices</span></p>
<p dir="ltr" style="line-height:1.15;margin-top:0pt;margin-bottom:0pt"><span style="font-size:15px;font-family:Arial;color:rgb(0,0,0);background-color:transparent;vertical-align:baseline;white-space:pre-wrap"><br></span></p>
<p style="line-height:1.15;margin-top:0pt;margin-bottom:0pt"><span style="font-size:15px;font-family:Arial;color:rgb(0,0,0);background-color:transparent;vertical-align:baseline;white-space:pre-wrap">I can post the full logs if needed but they are quite long.</span></p>
<br><span style="font-size:15px;font-family:Arial;color:rgb(0,0,0);background-color:transparent;vertical-align:baseline;white-space:pre-wrap"></span></span>
<div>I tried different values for CONFIG_USBDEBUG_HCD_INDEX on the Coreboot build. I tried values of 0,1 & 2 but still didn't see any output on the EHCI debug device with 'cat /dev/ttyGS0'</div><div><br>
</div><div>Regards,</div><div> Tim.</div><div><br></div><div><br></div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Fri, Jan 24, 2014 at 4:41 PM, Kyösti Mälkki <span dir="ltr"><<a href="mailto:kyosti.malkki@gmail.com" target="_blank">kyosti.malkki@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="im">On 01/24/2014 12:18 PM, Timothy Potter wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Sorry for not including all you asked for Kyösti, I've not had much time<br>
to spend on this. So you are saying if lsusb -v reports a 'Debug<br>
descriptor' I should be able to use that port as the EHCI debug port on the<br>
target?<br>
<br>
</blockquote>
<br></div>
Hi<br>
<br>
I think my first reply was quite clear on what information I need to assist you solve it. But I am too close to see if some obvious details from my instructions were missing.<br>
<br>
This is more easily solved if you come to discuss on #coreboot. You should then write a tutorial for our wiki or at least reply here with the steps were you went wrong the first time.<span class="HOEnZb"><font color="#888888"><br>
<br>
Kyösti<br>
</font></span></blockquote></div><br></div>