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munchausen: pinctrl is not fully integrated on pxa - I filed a bugreport to LKML not too long ago, as it impacted any kernel after 4.6. on zaurus (dotmatrix keyboard)
munchausen: since zipit has full? devicetree support, pinctrl may actually work on zipit.
[00:25] greguu is going to LCA2019 tomorrow and will take a zipit and zaurus c3100..
and most importantly, the mozzwald breakoutboard and linux pin !
ssieb well I didn't know how to do it either but it was a bit of trial and error
I got as much flux onto both fpc and pcb as possible, and as much tin onto the contacts as well
Initially I tried aligning the fpc cold and holding it down with the index finger of one hand, then heating each track on the pcb hoping it would form a contact
But it didn't work, at least not for every contact. In the end I held the iron flat and heated all the tracks together, moving it about a bit to make sure the solder was all liquid, then just pushed the fpc onto it while it was all liquid
I got the alignment wrong a couple of times, but it worked on about the third go
Its only a 6 pin cable though
greguu yeah it seems there's no pinctrl at all with the 4.4 kernels we are using as well
I'm a bit stuck with the driver at the moment. I can't work out what the interrupt line should be in the dts
I'm feeling a little bit like dts is a very complicated solution to a problem I've never had
It's quite frustrating
munchausen: yes, devicetree is weird for me too, hence zaurus kernels are still without..
but eventually ..
greguu any pointers on what to use for an "interrupts =" line in a pxa dts when you want it to point to a particular GPIO? I know the GPIO interrupt I want is 11, but haven't deciphered anything further yet
By which I mena, interrupt 11, not gpio 11 :)
Oh wait, 10 sorry
greguu have fun at LCA :)
I hope I will
no idea bout devicetree, but this has helped me https://events.static.linuxfound.org/sites/events/files/slides/petazzoni-device-tree-dummies.pdf
also mentions pinctrl
greguu ah nice, thanks for the pointer
I still need to see if I can get voidz to go on my zarus sl-5xx0 (can't remember which xx :D)
you should be able to, by using one of the OE/Yocto kernels from ant
I hope to get device tree on zaurus this year with some help from ant
Eventually I'd like to do kernel work on my ipaq, but it is still some way in the future
the zipit port to device tree is already some help
Yeah I have seen some of your discussions in I forget which room
must have been yes. I want to try kexecboot on zipit eventually
I'm quite tempted at the moment to hardcode the driver I want to work on the zipit and ignore dtb completely
nothing is going to stop you from doing that
and it may just do the job
It makes me feel like a bad developer though
its only bad if you do not share your results
if you select devie tree in linux kernel since 4.6 or so , pinctrl is mandatory
Yeah but then I'll have to convert the rest of the zipit code to use pinctrl :)
you could be the first!
I'm not sure I'm up to this task/have enough time
Nice try though :)
[03:03] greguu is thinking about to give a lightning talk at LCA about XScale/PXA "the forgotten Intel ARM chipset"
Go for it!
There's enough users still out there and people keeping it alive :D
but to be honest, mainline support is still pretty good, compared to other as old SOCs
zipit seems more lively than the zaurus community.
Yeah I don't know what keeps zipit alive
Actually probably because the hardware is so cheap
It gets it into more people hands and some of them just hold on :)
Still don't have a clamshell zaurus. Been tempted a lot of times but they are too expensive
instead of using a pi, use a zaurus or zipit with expansion board.
think retro recycle
XScale/PXA not dead yet
you can get cheap zaurus on https://www.rakuten.co.jp
varti on #kexecboot is familiar with the "process"
you could also ask on www.oesf.org in the forum in the want/sale section
Didn't find any zauri by typing "zaurus" but maybe I need to put something else
I have a friend in Japan, perhaps he could help
I found e.g. https://item.rakuten.co.jp/goodmarket/gmktb00081mo7s
But as I understand if that is 48800.00 yen then it is a lot more than I'd probably pay on ebay...
Lol, I think zaurus means something like "pliers"
yeah, leatherman of the 90s hacker
well not 90s .
ask varti on oesf.org about obtaining a zaurus, he has good sources
greguu thanks will do. Think he is in another channel here too
or join #zaurus if u dare
Zipits are on fleabay https://www.ebay.co.uk/itm/333021652568 https://www.ebay.co.uk/itm/333020996667
Quite expensive though
how is less than 20 quid expensive! hell I might pick up another couple for tht
dTal oh really? IDK when I got my zipits I bought 20 for less than 10 GBP each
But it was a group buy for a bunch of friends in our hack group, so unfortunately I don't have 20 zipits
This is going back to 2011 or so, but there was someone selling off old zipit stock in bulk, I don't remember the details
I'm just glad they're readily available for a nominal fee
worth remembering that they cost more than that new
amazing they used to charge $150
ssieb I forgot, the other thing that I did was use a scalpel to reveal more of the traces to give me longer traces to work with
I was fortunate that that was possible in my case
munchausen: ok, thank you
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Jan 17 2019 « top » Jan 19 2019