I did that pinout for deciding which pins to use for what when designing a PCB for a Omega2 based project of mine. I hope it might be useful for others

[Update: the latest version, covering Omega2 and Omega2S, including additional info about pins with bootstrapping functions, can be downloaded here]

[Update: in case you are looking for a similarily annotated pinout for the Omega2S, look here]

@luz Why is it so blurry?

Maybe because luz's screen had a little dust on it when he took his screen capture. Lol!!!

Kidding aside, I suspect that the center of the image (from Onion) has been resized by a little %, and it does give an impression of loss of sharpness. The black writings on both sides are perfectly sharp.

I guess they took just a low resolution picture and made the writings new. That's why the writings are perfect sharp.

The pinout-diagrams in the official documentation are perfectly sharp, Luz messed up the sharpness. I am not trying to diss on him, quite the contrary, but I would hope he'd find it in himself to fix the blurriness.

I did this a few months ago, when the only Omega2 pinout I could find was the web image in the Kickstarter campaign, which had that somewhat limited resolution. I put the image into Pages.app and added the annotation around. The result was a PDF, but to post it today I converted it into a reasonably sized png. If anybody wants the .pages to improve it, just let me know…

@WereCatf @Luciano-S @fossette LOL, it wasn't meant as a piece of art, just some info

What?! Are you sure? I could've sworn I saw some inspiration being taken from Mona Lisa!

• Could be that a bootstrap-pin is shorten and not let boot the omega2+ ?

• Would a uboot change solve it? (probably a older one?)

I bought my omega 2+ to use with a mini-dock i already had from onion.io store.

@administrators how do we have to proceed with this fact?

You could try removing the pull-down resistor R84, which should allow the Omega2 to boot normally.

As for u-boot: no, the bootstrap-pins are a hardware-feature and they get applied before u-boot is loaded. They determine things like what mode the SoC boots in, whether the PCB has DDR1 or DDR2 and stuff like that, and these things obviously have to be configured before any software can be executed in the first place.

I am curious, could/ does the Omega2 boot-strap determine which pins are the serial Tx and Rx?

@administrators how do we have to proceed with this fact?

I made also a ticket in this (mine) request.

If anybody is interested in this very particular combination of features, just let me know

This is part of a larger project, which I will publish as soon as all the hard- and software parts work together as intended, from laser cut wood to WS281x kernel driver using MT7688 PWM…

I was looking at the wrong bootstrap-pin in the PDF earlier, UART0_TX should be pulled down, so the pull-down resistor doesn't matter. I was looking at the boostrap-pin on UART1_TX, which is the opposite.

Can I please ask what this PDF file is?

@György-Farkas A PDF-file is short for "portable document format" and is a file format used to present documents in a manner independent of application software, hardware, and operating systems. Each PDF file encapsulates a complete description of a fixed-layout flat document, including the text, fonts, graphics, and other information needed to display it. -- https://en.wikipedia.org/wiki/Portable_Document_Format

Really?!

@WereCatf said in Omega2 annotated pinout (including MT7688 pin names):

I was looking at the wrong bootstrap-pin in the PDF earlier, UART0_TX should be pulled down, so the pull-down resistor doesn't matter. I was looking at the boostrap-pin on UART1_TX, which is the opposite.

Can I please ask what that PDF file is?

Thank you very much indeed.