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Playing with Play-Doh

Discussion in 'Pyra News' started by EvilDragon, Jun 20, 2017.

  1. hns

    hns Very Active Member

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    Not any more since ca. Linux 3.14 (where they introduced DT for ARM).
    You just need a different "device tree" file which is more or less a compiled hardware description. The uImage/zImage and the kernel modules are quite universal nowadays and can be swapped around.
    The Pyra currently uses the "Letux" kernel which also runs on the OpenPandora. And they are different ARM (OMAP3 vs. OMAP5).
    So you just need to make U-Boot load either pyra.dtb or pandora.dtb and the otherwise identical system image boots on both. Unless you use special features of one SoC the other one doesn't have.
     
    Link, Haraldur, rygD and 5 others like this.
  2. klapse

    klapse Central Scrutinizer

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    hns's location is so appropriate
     
    dimag0g and Link like this.
  3. waGL

    waGL Still Fresh

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    Oberhaching? More like Uberhacking :-D
     
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  4. Zwerg01

    Zwerg01 Still Fresh

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    You build a hardware plattform around the CPU and not vice versa. it is nearly impossible to find a CPU that can replace the old one. other architecture has other voltages, current draw, thermal dissipation. and then it has to have the same features like emmc controller, image rotation, MIPI for 3G/4G etc etc...

    I didn't found information about qualification of the OMAP5. So if it is only for consumer application, it is very likely that it is discontinued soon.
    --- Double Post Merged, Jul 2, 2017, Original Post Date: Jul 2, 2017 ---
    How many exaclty? Where did you get your information.
     
  5. Letalis Sonus

    Letalis Sonus Very Active Member

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    You mean for the eMMC chip that is part of the CPU board and therefore totally replaceable?

    MIPI covers a lot of interfaces, but the PLS8 chips use USB. I'm pretty sure we only need DSI.

    In contrast to OMAP3, OMAP5 was especially targeting the industrial and automotive market IIRC, if they've got even a single customer in that field it won't go out of production for a loooong time. The platform is already discontinued, but it should have a pretty satisfactory guaranteed availability.
     
  6. Zwerg01

    Zwerg01 Still Fresh

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    I said emmc controller, not emmc chip.

    Renesas automotive mcu introduced 2011 is d'cont last year. Place last order until 2018. loooooooooonnnnnngggggg time. lol. It is always depending on the policy of manufacturer.
     
  7. Silent-Hunter

    Silent-Hunter Advanced Member

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    The eMMC and CPU are on the CPU board, if there is an external eMMC controller I'm sure it's on the same board too. There would be no reason to have it on the main board.
     
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  8. Grench

    Grench Forum Addict!

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    Renesas now has their own SoC too. Check their H3 dev unit. ARM powerhouse.
     
  9. TrashyMG

    TrashyMG Sarcasm Dispenser Staff Member

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    The eMMC controller is built into the SoC, so yet again it's still replaceable.
     
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  10. Grench

    Grench Forum Addict!

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    @EvilDragon &/or @hns

    The Pyra Wiki information on SoC/CPU board revisions is pretty sparse. When you communicate with each other, what designations do you use to differentiate the versions? I'm betting others might find this information interesting as well.

    What I had hoped to find in the Pyra Wiki was:
    Board revision/designation/identifier:
    Date PCB manufactured:
    Quantity manufactured:
    Date first populated:
    Short blurb about characteristics (good/bad/other):

    Thank you!
     
  11. Xcl4m4t10n

    Xcl4m4t10n Very Active Member

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  12. Inqui

    Inqui Member

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    Noooooooooo
    Up to five days for arriving and writing :-/
     
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  13. EvilDragon

    EvilDragon Administrator Staff Member

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    We have different board revisions, hns should know all about them.


    Sent from my XT1650-03 using Tapatalk
     
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  14. Askarus

    Askarus Advanced Member

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    Who cares about Keymats.
    It's good already.
     
  15. ClockworkCoder

    ClockworkCoder Active Member

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    ED's too busy sculpting things in play-doh methinks.
     
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  16. driftke70

    driftke70 Still Fresh

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    Nice. Im GM of a company in Australia that manufactures PVC for a living for people like you.

    I think you guys are looking too far into this. The device will be more about how you use it.
     
  17. Binky

    Binky Death's Steed Staff Member

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    What's that have to do with the price of fish?
     
  18. Klumpen

    Klumpen Run away! Run away!

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  19. driftke70

    driftke70 Still Fresh

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    Some guy was talking about working with pvc and my phone didnt quote for some reason.

    Im sorry for bringing confusion into your life
     
  20. Grench

    Grench Forum Addict!

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