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Rock-Pi-4A 1G


foo

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Hey guys,

bunch of thanks for your great work. 

Was wondering what's up with the latest buster images (20.05.2-5.4.43) for the 1Gig A versions. 

Worked great up to 20.02.11-5.4.32. 

 

The boot gets up to changing  the freq, then nothing :

 

 

> change freq to 416MHz 0,1
   Channel 0: LPDDR4,416MHz
   Bus Width=32 Col=10 Bank=8 Row=14 CS=1 Die Bus-Width=16 Size=512MB
   Channel 1: LPDDR4,416MHz
   Bus Width=32 Col=10 Bank=8 Row=14 CS=1 Die Bus-Width=16 Size=512MB
   256B stride
   channel 0
   CS = 0
   MR0=0x19
   MR4=0x3
   MR5=0x6
   MR8=0x0
   MR12=0x72
   MR14=0x72
   MR18=0x0
 
   MR19=0x0
   MR24=0x8
   MR25=0xFF
   channel 1
   CS = 0
   MR0=0x19
   MR4=0x3
   MR5=0x6
   MR8=0x0
   MR12=0x72
   MR14=0x72
   MR18=0x0
   MR19=0x0
   MR24=0x8
   MR25=0xFF
   channel 0 training pass!

   channel 0 training pass!
   channel 1 training pass!
   channel 0, cs 0, advanced training done

 


  

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On the download pages https://www.armbian.com/rock-pi-4/ its written "1Gb model currently not supported" which means its known that it doesn't work ... probably recent u-boot does not support this memory configuration. Device sits on my desk because of this reason, but time is missing component ... I could allocate it only to write that note and open a Jira https://armbian.atlassian.net/browse/AR-282

 

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Understood, is cool Igor, I sow the message, I was just curious to see  what is the issue.  

Btw is the RAM configuration done only here:

  "/arch/arm/mach-rockchip/sdram_common.c"  ?

 

 

Edited by foo
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1 hour ago, foo said:

I was just curious to see  what is the issue

From your log it seems that the issue is way before u-boot - in DDR blob from Rockchip.

Can you check if booting this image is successful for you?

 

It is built using Armbian master with DDR binary downgraded from v1.24 to v1.20 - the version used by Radxa to build their images.

Both versions work on my 4GB unit but I guess v1.20 was thoroughly tested on 1GB unit by Radxa ;-)

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Awesome! hope we get the fix it in 20.05.

Wondering what has Rockchip "fixed" with the v1.24 tho. Is there a release doc somewhere to read for this version?

Edited by foo
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