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by John Westlake
Sun May 27, 2018 7:45 pm
Forum: Compute Module
Topic: CM3 always crashes within minutes under load
Replies: 39
Views: 6188

Re: CM3 always crashes within minutes under load

We are facing the exact same issue and started a post here under the thread "Dynamic profile VCore difference between RPi3 & CM3" https://www.raspberrypi.org/forums/viewtopic.php?f=98&t=212119 Basically we have no thermal issues running our software on the Rpi3 - but instant (within 1-2 minutes) ove...
by John Westlake
Thu May 17, 2018 9:35 am
Forum: Compute Module
Topic: CM3 LAN9514 not detected
Replies: 2
Views: 1576

Re: CM3 LAN9514 not detected

So we have found that you don't need to connect LAN RUN for testing, the chip will Reset itself. The only issue we have found with not connecting LAN RUN is that if the RPI performs a software Reset then the LAN IC is not Reset (reinitialised ) and is not then seen by the CM3 - but works OK for firs...
by John Westlake
Thu May 17, 2018 9:23 am
Forum: Official Foundation Display
Topic: Official Touch Screen and Xorg
Replies: 57
Views: 43001

Re: Official Touch Screen and Xorg

Brilliant - looking forward to trying...

When can we expect to see Beta release for testing / feedback?
by John Westlake
Wed May 16, 2018 4:18 pm
Forum: Official Foundation Display
Topic: Official Touch Screen and Xorg
Replies: 57
Views: 43001

Re: Official Touch Screen and Xorg

Hi James,

Thats great news - glad to see progress, I'd be happy to test a beta build when ready (I'd test with a DPI panel).
by John Westlake
Wed May 16, 2018 6:57 am
Forum: Official Foundation Display
Topic: Official Touch Screen and Xorg
Replies: 57
Views: 43001

Re: Official Touch Screen and Xorg

James,

A late May "Ping" to keep the pressure on, has there been any further development? :) - we are still very keen for a dual independent display solution....
by John Westlake
Mon May 14, 2018 5:56 pm
Forum: Compute Module
Topic: Dynamic profile VCore difference between RPi3 & CM3
Replies: 28
Views: 3435

Re: Dynamic profile VCore difference between RPi3 & CM3

This the message I started: Have either of you compared idle temperatures in your custom carrier boards with those in a stock CMIO board? The board on my desk is idling at about 45 in a room with an ambient temperature of 25C. But then I ran my own thermal comparison with a Pi 3B. This is the scrip...
by John Westlake
Mon May 14, 2018 5:32 pm
Forum: Compute Module
Topic: Dynamic profile VCore difference between RPi3 & CM3
Replies: 28
Views: 3435

Re: Dynamic profile VCore difference between RPi3 & CM3

I've been having a very similar issue, I have the CM3 in an aluminum enclosure with a heatsink that makes contact with the aluminum case, and it generates an incredible amount of heat. I was hitting 86c and idling around 82c for the last few weeks I've been doing testing with and without a heatsink...
by John Westlake
Thu May 03, 2018 3:46 pm
Forum: Compute Module
Topic: Dynamic profile VCore difference between RPi3 & CM3
Replies: 28
Views: 3435

Re: Dynamic profile VCore difference between RPi3 & CM3

Phil, I'm afraid I cannot explain much as I only understand the hardware, but from the software developer:- "Right after the system is initialized and kernel is loaded, we enter in the initramfs phase. When updating, we stay in initram phase (which is a barebone OS system for early boot) for up to 3...
by John Westlake
Thu May 03, 2018 3:57 am
Forum: Compute Module
Topic: Dynamic profile VCore difference between RPi3 & CM3
Replies: 28
Views: 3435

Re: Dynamic profile VCore difference between RPi3 & CM3

Hi Phil, Thank you for your reply, Doh - yes I should have realised the Decimal / Hex split - confirmed with a module (#9) right on the boarder (Now I feel stupid):- Module #9:- Boot 1 over_voltage_avs=62500 (62.50mV) over_voltage_avs_boost=62500 (62.50mV) ring_osc(1)=16.331MHz (@1.2000V) ring_osc(2...
by John Westlake
Wed May 02, 2018 5:30 pm
Forum: Compute Module
Topic: Dynamic profile VCore difference between RPi3 & CM3
Replies: 28
Views: 3435

Re: Dynamic profile VCore difference between RPi3 & CM3

A gentle Ping please as we have overheat issues with CM3 modules during the update / booting process that does not appear to effect the RPi3.
by John Westlake
Mon Apr 30, 2018 3:48 am
Forum: Compute Module
Topic: CM3 Flashing on Windows 7 broken?
Replies: 11
Views: 5515

Re: CM3 Flashing on Windows 7 broken?

I beg to differ WRT flashing with Windows7, we have 4 different Windows7 machines in the lab (64bits) and all work well EVERYTIME... I've personally programmed atleast 500 boards :(
by John Westlake
Mon Apr 30, 2018 3:37 am
Forum: Compute Module
Topic: Dynamic profile VCore difference between RPi3 & CM3
Replies: 28
Views: 3435

Re: Dynamic profile VCore difference between RPi3 & CM3

Thank you for the heads up on the onboard ring oscillator die calibration. I've look at samples of the CM3 I have in the lab and created a splatter diagram of the over_voltage_avs / ring_osc(1) and ring_osc(2). The ring_osc(2) results seems to have the most direct impact on over_voltage_avs / over_v...
by John Westlake
Fri Apr 27, 2018 12:48 am
Forum: Compute Module
Topic: Dynamic profile VCore difference between RPi3 & CM3
Replies: 28
Views: 3435

Dynamic profile VCore difference between RPi3 & CM3

I've spent the past week working on thermal issues (overheat) on the CM3 where we have not experienced issues with the RPi3. In an effort to understand the cause of the CM3 thermal difference (about 10Deg higher) I've removed the WiFi BGA from the Rpi3 so that the hardware is the same from a softwar...
by John Westlake
Thu Apr 26, 2018 11:18 pm
Forum: Compute Module
Topic: SDIO for Wifi/Bluetooth module
Replies: 93
Views: 43376

Re: SDIO for Wifi/Bluetooth module

I must confess to being a little lost here - does not the RPi3 use the secondary SDIO interface to communicate with its WiFi Chip? If so why is RPi not being more forward with supporting Compute Module owners - it seems they have already done all the leg work developing drivers etc. and yet are sell...
by John Westlake
Thu Apr 26, 2018 8:53 pm
Forum: Compute Module
Topic: WiFi chip for Compute Module 3
Replies: 22
Views: 21776

Re: WiFi chip for Compute Module 3

I understand it uses a UART channel (for BT) and the secondary SDIO Card interface I believe these are the I/O pins related to the WiFi / BT on the RPi3 pin@p14 { function = "uart0"; termination = "no_pulling"; drive_strength_mA = < 8 >; }; // TX uart0 pin@p15 { function = "uart0"; termination = "pu...
by John Westlake
Wed Feb 28, 2018 8:12 pm
Forum: Official Foundation Display
Topic: Official Touch Screen and Xorg
Replies: 57
Views: 43001

Re: Official Touch Screen and Xorg

Hi James,

Do you have any update? Keen for news :)
by John Westlake
Wed Jan 10, 2018 10:40 am
Forum: Official Foundation Display
Topic: Official Touch Screen and Xorg
Replies: 57
Views: 43001

Re: Official Touch Screen and Xorg

Well thats to be expect - its hard to predicate how long something like this will take - it will be done when its done! As a designer, nothing irritates me more then when people ask me to developed a new design then ask how long it will take - if I knew, then I'd not have to develop anything because...
by John Westlake
Tue Jan 09, 2018 11:20 pm
Forum: Official Foundation Display
Topic: Official Touch Screen and Xorg
Replies: 57
Views: 43001

Re: Official Touch Screen and Xorg

Hope your feeling better - my lead engineer has also been off - at the worst possible time with CES... About the run the first prototype PCB's - so it be great if you can get the second display channel going. the PCB's have a DPI RGB interface connector for "internal display panel" - so hoping it wi...
by John Westlake
Thu Jan 04, 2018 8:30 am
Forum: Official Foundation Display
Topic: Official Touch Screen and Xorg
Replies: 57
Views: 43001

Re: Official Touch Screen and Xorg

James,

Just a New Years "ping" to keep the pressure on :) - we are very keen for a dual independent display solution.
by John Westlake
Fri Dec 22, 2017 10:39 pm
Forum: Official Foundation Display
Topic: Official Touch Screen and Xorg
Replies: 57
Views: 43001

Re: Official Touch Screen and Xorg

We can support you with DPI enabled hardware - with the panel working in single display mode so you have all the DPI panel settings and config files. Our basic requirement is to have to have two independent displays operational - these displays can be different resolutions / colour bit depth. No pro...
by John Westlake
Fri Dec 22, 2017 8:42 pm
Forum: Official Foundation Display
Topic: Official Touch Screen and Xorg
Replies: 57
Views: 43001

Re: Official Touch Screen and Xorg

What can we do to push this request up the "To-Do Fire Fighting" list at RPi? If you have an *reasonably priced external consultant - dependent on cost I might be able to help fund the Driver development (for public released)? This thread was first posted back in September 2015, so I think we need t...
by John Westlake
Fri Dec 22, 2017 5:07 am
Forum: Official Foundation Display
Topic: Official Touch Screen and Xorg
Replies: 57
Views: 43001

Re: Official Touch Screen and Xorg

James,

Thanks for the reply, waiting for your update :)
by John Westlake
Wed Dec 20, 2017 10:43 pm
Forum: Official Foundation Display
Topic: Official Touch Screen and Xorg
Replies: 57
Views: 43001

Re: Official Touch Screen and Xorg

Just to confirm that the new graphics driver works with the DSI+HDMI with independent displays concurrently on each display interface? - if so, this would be brilliant news as my rather limited understanding is that the most difficult task is to enable a second framebuffer in the GPU Driver. Once th...
by John Westlake
Wed Dec 20, 2017 4:30 pm
Forum: Official Foundation Display
Topic: Official Touch Screen and Xorg
Replies: 57
Views: 43001

Re: Official Touch Screen and Xorg

Thank you :) I'm not sure if this is relevant, but we use the DPI interface driving 800x480 LCD panel with CTP for the internal display (which is "low frame rate video", think menu options / user controls) with the HDMI external display working with faster frame rates - think video display etc. I wo...
by John Westlake
Wed Dec 20, 2017 3:44 pm
Forum: Official Foundation Display
Topic: Official Touch Screen and Xorg
Replies: 57
Views: 43001

Re: Official Touch Screen and Xorg

Jamesh, I'm a hardware designer - with practically zero experience of Linux and have little clue where to start. The trouble I face is that my software guys are pretty lazy and there first excuse is always going to be "it cannot be done" - or even better "its going to cost a lot of money to do that"...

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