change the sdram elpida EDB8064B1PB-8D-F to elpida EDB8164B3PF-8D-F for pandaboard

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Posted by sunny sour

on Dec 17 2012 01:17 AM

Prodigy245 points

HI I am using the http://omapedia.org/wiki/4AI.1.7_OMAP4_Icecream_Sandwich_Panda_Notes for my 4460 pandaboard.

Because the stop production of the elpida EDB8064B1PB-8D-F, I have to change it to EDB8164B3PF-8D-F.

But the times of the EDB8164B3PF-8D-F is different from that of EDB8064B1PB-8D-F.

How to configure the xloader 、uboot and kernel ?

I know that 4470 SOMs uses the EDB8164B3PF LPDDR2 memory . Can I use the code for 4460 pandaboard ? Or use something else LPDDR2 memory ?

Are there any patch?

thanks

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Posted by yaoguang hu1

on Dec 24 2012 19:24 PM

Prodigy20 points

HI , I have the same problem.

Any suggestion?

thanks.

Posted by Gina Glaser

on Dec 26 2012 14:26 PM

Verified Answer

Verified by sunny sour

Expert8055 points

If you contact your TI representative, there is an application note available that describes LPDDR2 settings for OMAP in detail. To summarize for your situation ...

1. There are no DDR changes in the u-boot.

2. In the x-loader, look at the struct defined in /cpu/omap4/sdram_elpida.c, which is assigned based on the OMAP type in the function __ddr_init(). You will need to change this to use the correct DDR struct (see the struct used for OMAP4470).

3. In the kernel, modify the EMIF setting in the board file (such as /arch/arm/mach-omap2/board-44xx-tablet.c for the Blaze Tablet): emif_devices.

Regards,
Gina

Please click the Verify Answer button on this post if it answers your question

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Posted by sunny sour

on Dec 26 2012 19:18 PM

Prodigy245 points

thanks