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by gsh
Tue Oct 10, 2017 8:02 pm
Forum: Compute Module
Topic: eMMC 5.1 support
Replies: 1
Views: 194

Re: eMMC 5.1 support

It hasn't been tested to work. But the 5.1 devices should be backwards compatible...

Gordon
by gsh
Tue Oct 10, 2017 7:59 pm
Forum: Compute Module
Topic: Programming eMMC after USB booting
Replies: 1
Views: 167

Re: Programming eMMC after USB booting

Just add it to the dt-blob.bin to drive it at boot up... It should then be available

Or, once you've booted your linux kernel just use raspi-gpio to set the pin directly...

eMMC should just appear

Gordon
by gsh
Tue Oct 10, 2017 10:00 am
Forum: Troubleshooting
Topic: Not Booting of a Swissbit SD card
Replies: 6
Views: 206

Re: Not Booting of a Swissbit SD card

Can you email me gordon at raspberrypi.org I could do with getting a copy of the first part of the disk image (just needs to cover the MBR and FAT sections). To do this put your card into a Pi1 and do the following: pi@raspberrypi:~ $ sudo parted /dev/mmcblk0 (parted) unit s (parted) p Some stuff......
by gsh
Mon Oct 09, 2017 3:04 pm
Forum: Troubleshooting
Topic: Not Booting of a Swissbit SD card
Replies: 6
Views: 206

Re: Not Booting of a Swissbit SD card

Yes that would be interesting, if it does indeed fix the problem we're still looking for a method of reliably reproducing the problem (I tried to debug the problem but ended up finding a scenario which fixes the problem instead, which isn't actually useful!) Clearly the Pi 2 and 3 is capable of read...
by gsh
Mon Oct 09, 2017 1:02 pm
Forum: Troubleshooting
Topic: Not Booting of a Swissbit SD card
Replies: 6
Views: 206

Re: Not Booting of a Swissbit SD card

That's interesting, I'm not sure why this would be the case, I assume this is different to @AndreasTBT problem because his would start working again by plugging into a working computer (Mac / PC). So do you find this for any combination of SwissBit SD card and Pi 2/3 or is it specific to one particu...
by gsh
Fri Oct 06, 2017 9:10 am
Forum: Compute Module
Topic: SD Card on computer module V3
Replies: 3
Views: 451

Re: SD Card on computer module V3

All Raspberry Pi product boot from either an eMMC or SD card on GPIOs 48-53 With the CM and CM3 the on-board eMMC is attached to these pins. On CM3 lite only these pins are brought out onto the edge connector... If you wanted to add a secondary eMMC or SD card (note you cannot use this for booting o...
by gsh
Fri Oct 06, 2017 9:04 am
Forum: Compute Module
Topic: 2 SD card on CM3L
Replies: 9
Views: 476

Re: 2 SD card on CM3L

The Raspberry Pi devices will only boot from GPIO 48-53, it is possible to provide a secondary eMMC or SD card on 22-27 or 34-39 but it is not possible to boot from that location
by gsh
Fri Sep 29, 2017 1:02 pm
Forum: Compute Module
Topic: CM3 eMMC init
Replies: 1
Views: 376

Re: CM3 eMMC init

Hi, I've also had this problem, but with a special "Swissbit" SD card, not eMMC. The issue was the device needed to be power cycled at just the right time to get it to work, (plugging it into a PC or Mac would fix it!) Unfortunately since 'fixing' the card I can no longer reproduce the problem ! Kno...
by gsh
Tue Sep 26, 2017 9:31 am
Forum: Compute Module
Topic: Flickering HDMI on custom CM3 board
Replies: 22
Views: 1107

Re: Flickering HDMI on custom CM3 board

You've either got hdmi_force_hotplug enabled or one of the hdmi_group hdmi_mode settings to force the mode. Either that or it is failing to read the edid correctly

Gordon
by gsh
Thu Sep 21, 2017 9:42 am
Forum: Compute Module
Topic: Flickering HDMI on custom CM3 board
Replies: 22
Views: 1107

Re: Flickering HDMI on custom CM3 board

If you get the same response on the CMIO3 board then I would agree there is something to look at, but at the moment it just looks like poor signal integrity... Try forcing a lower pixel clock hdmi mode to see if it changes anything
by gsh
Wed Sep 20, 2017 10:57 am
Forum: Compute Module
Topic: Flickering HDMI on custom CM3 board
Replies: 22
Views: 1107

Re: Flickering HDMI on custom CM3 board

Can you email me at gordon@raspberrypi.org with your schematics for the HDMI section so we can see it... If you're missing the pull ups for CEC and I2C then this would explain quite a lot (also edid output would be interesting)

Gordon
by gsh
Wed Sep 20, 2017 10:03 am
Forum: Compute Module
Topic: Flickering HDMI on custom CM3 board
Replies: 22
Views: 1107

Re: Flickering HDMI on custom CM3 board

Can you do

tvservice -d edid.dump
edidparser edid.dump
by gsh
Tue Sep 19, 2017 6:56 pm
Forum: Compute Module
Topic: Flickering HDMI on custom CM3 board
Replies: 22
Views: 1107

Re: Flickering HDMI on custom CM3 board

I believe the hotplug signal is actually only read once and it's value is remembered. I would think it's just signal integrity, can you try different quality HDMI cables to see if that helps at all? I assume you're running a four layer PCB with a constant ground plane beneath the top plane signals a...
by gsh
Tue Sep 19, 2017 9:18 am
Forum: Compute Module
Topic: Flashing CM3L with 16GB eMMC by USB SLAVE is slow
Replies: 6
Views: 566

Re: Flashing CM3L with 16GB eMMC by USB SLAVE is slow

Can you try with Linux (i.e. use a Raspberry Pi as a host), just to see if the effect is the same. Trying to understand whether this is a Windows thing or a CM3 issue...

Gordon
by gsh
Sun Sep 17, 2017 9:45 am
Forum: Compute Module
Topic: Compute Module 3 Mass Programming
Replies: 3
Views: 629

Re: Compute Module 3 Mass Programming

One solution to this problem is to use the script-executor application https://github.com/raspberrypi/scriptexecutor There's quite a lot of documentation along with it, I had Floris Bos write most of the code (the same guy who wrote Berry-Boot). The idea is to create a very simple executable that yo...
by gsh
Thu Sep 07, 2017 7:18 am
Forum: Compute Module
Topic: CM3 Flashing on Windows 7 broken?
Replies: 4
Views: 961

Re: CM3 Flashing on Windows 7 broken?

If it said XBox controller then you're using an old version of the installer

Use the latest version
by gsh
Wed Sep 06, 2017 1:37 pm
Forum: Compute Module
Topic: compute module 1.1 boot
Replies: 19
Views: 1284

Re: compute module 1.1 boot

After booting can you do:

Code: Select all

sudo vcdbg log msg 2>&1 | grep blob
and

Code: Select all

sudo vcdbg log msg 2>&1 | grep gpioman
What do these return?

Why aren't you using raspi-gpio get? This is the official method for getting information about the pins

Gordon
by gsh
Wed Sep 06, 2017 7:14 am
Forum: Compute Module
Topic: Flashing CM3L with 16GB eMMC by USB SLAVE is slow
Replies: 6
Views: 566

Re: Flashing CM3L with 16GB eMMC by USB SLAVE is slow

Is this with the CMIO3 board?

Gordon
by gsh
Tue Sep 05, 2017 7:41 pm
Forum: Compute Module
Topic: compute module 1.1 boot
Replies: 19
Views: 1284

Re: compute module 1.1 boot

The dt-blob.bin is not read by the kernel (which is what you are doing by playing with device-tree etc) it is automatically read by the firmware at boot time (before the kernel is even loaded from the disk) This is completely different and separate from the kernel device tree and in fact has a compl...
by gsh
Tue Sep 05, 2017 3:30 pm
Forum: Compute Module
Topic: Newbie Rasp Pi Issue
Replies: 14
Views: 652

Re: Newbie Rasp Pi Issue

I would guess the problem is you didn't have the latest version of rpiboot.
by gsh
Tue Sep 05, 2017 1:40 pm
Forum: Compute Module
Topic: Flashing CM3L with 16GB eMMC by USB SLAVE is slow
Replies: 6
Views: 566

Re: Flashing CM3L with 16GB eMMC by USB SLAVE is slow

You should see the following: Waiting for BCM2835/6/7 Sending bootcode.bin Successful read 4 bytes Waiting for BCM2835/6/7 Second stage boot server File read: start.elf Second stage boot server done Are you saying it's waiting for 5 minutes on line 2 (Sending bootcode.bin) then continuing with the r...
by gsh
Tue Sep 05, 2017 9:54 am
Forum: Compute Module
Topic: Newbie Rasp Pi Issue
Replies: 14
Views: 652

Re: Newbie Rasp Pi Issue

OK, so it has appeared then...

Right, so starting afresh

Code: Select all

git clone https://github.com/raspberrypi/usbboot
cd usbboot
make
sudo ./rpiboot
What does this do?

Gordon
by gsh
Tue Sep 05, 2017 5:37 am
Forum: Compute Module
Topic: Newbie Rasp Pi Issue
Replies: 14
Views: 652

Re: Newbie Rasp Pi Issue

Great, then that means it is trying to boot through USB correctly. So if you now do lsusb on the Ubuntu machine, what does it give you? Also check for errors from dmesg... If it gives you nothing, try using a different USB cable, there have been some problems with cheap Chinese USB cables which tend...
by gsh
Mon Sep 04, 2017 4:48 pm
Forum: Compute Module
Topic: Newbie Rasp Pi Issue
Replies: 14
Views: 652

Re: Newbie Rasp Pi Issue

Can you just do the following on your Ubuntu box with your 'bricked' CM3: 1) Unplug everything from the CMIO3 board 2) Check that you can run lsusb on your ubuntu box and it should list your USB devices correctly 3) Now plug a micro USB cable into 'USB SLAVE' and the host computer 4) Check USB SLAVE...
by gsh
Mon Sep 04, 2017 10:45 am
Forum: Compute Module
Topic: Broken Compute Module
Replies: 5
Views: 700

Re: Broken Compute Module

Have installed it on my Windows 7 machine with no problems, I've not got a Windows 10 machine but it worked fine on James's machine when we tested it with no complaints about the driver signing... I wonder if you've got some higher administration settings making it more difficult to install. I'm usi...

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