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Originally Posted by arivero
Particularly, hope you are not a spin-off of a big industry has have provided you with a magic USB chip with a propietary driver working only in linux 2.4.x (The chip is great, it does USB both ways, so you can be master and slave of the bus at the same time. )
Then hope do you not get a flash memory chip with is famously one of the better ones of the market but, guess what? It depends on a propietary driver for some of their anti-wearing features, and the existing linux driver probably gets a poorer performance.
And finally hope you have not decided to work with the most advanced screen technology in the market, geting involved in a lot of red tape papers of patent rights and agreements where you do not know even if you can release info about it.
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You forgot the part about using an Intel CPU chip with a lengthy list of bugs and issues you need to compensate for.
And our buddy the UCB13xx series chip that is one of the strangest collections of functions I've seen in a "standard" part in some time.
They also added a real time clock chip rather than use the PXA-255's built in clock. I suspect it was to have a more accurate clock with alarms to wake from Sandman but none of that is in use (I poked the chip and asked it.)
My clock drifts abominably unless I keep it sync'd with my own personal iDS server. When I get the bandwidth I need to write the clock drift correction logic to leverage the clock chip's precision time base correction function.