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Related

RPi rev 2.0 explained

Former Member
Former Member over 13 years ago

Eben has a front-page story up explaining rev 2.0.

It does fix the 1.8V problem, although no credit where

credit is due to Jamodio or any of the others here for

finding, characterizing, and reporting the problem.

 

No mention that I can see of FCC/CE residential

certification.  I assume the needed minor pcb changes

were made, but perhaps certification has not been

done yet.

 

http://www.raspberrypi.org/archives/1929

 

p.s.

   hopefully element14 will explain to their customers

how to be sure to get rev 2.0 when ordering.

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  • jamodio
    jamodio over 13 years ago in reply to Former Member

    The +1 increment is the number they burn on the OTP section of the BCM SoC.

     

    According to their Revision numbering it contemplates a minor revision number, the new board is Revision 2.0.

     

    I know MANY companies, even non-profits and large ones traded in public markets that provide advance information, erratas, and known issues reports and expected fixes and time frames when the fixes will show up on production units.

     

    -J

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  • jamodio
    jamodio over 13 years ago in reply to Former Member

    The Blog article does not show any pinout for P5 and I didn't find any reference to it on the forum.

     

    About the 1V8 error, Eben said "The SMSC 1V8 power has been disconnected from the system supply."

     

    -J

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  • Former Member
    Former Member over 13 years ago in reply to jamodio

    Even switching the I2C is not really a major change.

     

    Unless you're actually relying on I2C for something. 

     

    It makes for quite a complex problem, especially when you get to a kernel that uses devicetree. That leaves you needing the bootloader to modify the supplied devicetree file prior to kernel boot, it can't be cleanly fixed in the kernel. So it probably leaves you to multiply up the combinations of Rpi-v1 or Rpi-v2 vs addon board designed for a Rpi-v1 or v2 vs SDcard with kernel that knows about v2 or not.  Oh, and a bootloader that knows about v1 vs v2 and what any addon board expects.

     

    I was never keen on the BeagleBone idea of every addon board having a small I2C flash device on it which describes the required gpio details. However it now seems like a very good idea - apart from the I2C pins have moved so you would have challenges to read it!

     

    Also it further breaks the idea of being able to use one SD card on any Pi you like.

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  • Former Member
    Former Member over 13 years ago

    so when do you think the RPI v2.0 will be available in farnell?

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  • Former Member
    Former Member over 13 years ago in reply to jamodio

    The Blog article does not show any pinout for P5 and I didn't find any reference to it on the forum.

    I put a comment on the post asking for it. Lets see if there's a reply..

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  • Former Member
    Former Member over 13 years ago in reply to Former Member

    so when do you think the RPI v2.0 will be available in farnell?

    going by the comments to the blog port, Farnell have already shipped some. That seems to be how the photo with 'Made in UK' on the silkscreen leaked yesterday..

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  • Former Member
    Former Member over 13 years ago in reply to jamodio

    About the 1V8 error, Eben said "The SMSC 1V8 power has been disconnected from the system supply."

     

    So who has a thermal imager and can get hold of a v2 to see what difference it makes ?

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  • Former Member
    Former Member over 13 years ago in reply to Former Member

    nice!

    I ordered an RPI 2 days ago, hope I get the Rev2 (:

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  • jamodio
    jamodio over 13 years ago in reply to Former Member

    Eben didn't provide much detail about why the switch of the I2C channels, perhaps they found something that was not working properly with the camera

    using the secondary channel.

     

    From the software side is not that a big deal if you somehow can read a variable that tells on which board rev you are running, which they did by burning a code revision number on the BCM SoC.

     

    -J

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  • jamodio
    jamodio over 13 years ago in reply to Former Member

    It was not "leaked" if you sniff around the blog you can easily find what is being uploaded ...

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