Thank you for the instructions.
I followed your flow step by step, but my board still does not work with the doubled RAM.
how to check and configure Memory split 3G user / 1G kernel?
tried to add “CONFIG_ZONE_DMA” into the configuration file, but “CONFIG_ZONE_DMA” seemed not enabled - how to enable “CONFIG_ZONE_DMA”?
I used your “SDRAM[0].McEmemCfg” setting but the board cannot be initiated after the change. I found a specific parameter change to cause that - “SDRAM[0].McEmemCfg” changed from “0x00000800” to “0x00001000”. (Other parameters change does not have this impact.) Do I need to modify other setting for this?
Thank you.
lgeek
December 17, 2014, 9:43pm
22
Hey yushanwu, I forgot to check this thread for replies. In case you didn’t get it working yet:
yushanwu:
how to check and configure Memory split 3G user / 1G kernel?
It’s in Kernel Features > Memory split.
yushanwu:
tried to add “CONFIG_ZONE_DMA” into the configuration file, but “CONFIG_ZONE_DMA” seemed not enabled - how to enable “CONFIG_ZONE_DMA”?
Add
select ZONE_DMA if ARM_LPAE
to arch/arm/mach-tegra/Kconfig. I forgot to add that bit to the patch.
yushanwu:
I used your “SDRAM[0].McEmemCfg” setting but the board cannot be initiated after the change. I found a specific parameter change to cause that - “SDRAM[0].McEmemCfg” changed from “0x00000800” to “0x00001000”. (Other parameters change does not have this impact.) Do I need to modify other setting for this?
Did you use the whole BCT file I provide? It changes multiple settings compared to the 2GB BCT, all of which are required to successfully run with the 4GB configuration (on my hardware). You can also try the BCT provided by NVIDIA.
Hi lgeek, we got the system to recognize 4GB three days ago but the network did not work then. We finally found the key you indicated below (select ZONE_DMA if ARM_LPAE) yesterday. The board seems fine with 4GB DRAM now. We are doing some tests to make sure. Thank you for the help. We followed your steps to make it… (Oh we used the NVidia BCT.)
lgeek:
Hey yushanwu, I forgot to check this thread for replies. In case you didn’t get it working yet:
yushanwu:
how to check and configure Memory split 3G user / 1G kernel?
It’s in Kernel Features > Memory split.
yushanwu:
tried to add “CONFIG_ZONE_DMA” into the configuration file, but “CONFIG_ZONE_DMA” seemed not enabled - how to enable “CONFIG_ZONE_DMA”?
Add
select ZONE_DMA if ARM_LPAE
to arch/arm/mach-tegra/Kconfig. I forgot to add that bit to the patch.
yushanwu:
I used your “SDRAM[0].McEmemCfg” setting but the board cannot be initiated after the change. I found a specific parameter change to cause that - “SDRAM[0].McEmemCfg” changed from “0x00000800” to “0x00001000”. (Other parameters change does not have this impact.) Do I need to modify other setting for this?
Did you use the whole BCT file I provide? It changes multiple settings compared to the 2GB BCT, all of which are required to successfully run with the 4GB configuration (on my hardware). You can also try the BCT provided by NVIDIA.
Hello All,
We have got our own design of tegra tk1, we have 4GB DDR fitted, I have applied patches mentioned lgeek and also updated Kconfig file arch/arm/mach-tegra/Kconfig to select ZONE_DMA if ARM_LPAE. I
[ 6.278766] ------------[ cut here ]------------#1 #1 ] PREEMPT SMP ARM#1 #1 #1 #1
Thanks
We have a 4GB SDRAM custom board use MT41K512M16HA chip
how can i check error about kernel?
sorry my english
We have a 4GB SDRAM custom board use MT41K512M16HA chip
how can i check error about kernel?
sorry my english
We have a 4GB SDRAM custom board use M741K512M16HA chip
how can i check error about kernel?
sorry my english
jachen
December 11, 2015, 3:05am
28
Hello, nuu9323226:
Kernel part
extlinux.conf must be changed to add mem and ddr_die, like mem=2048M@4096M, ddr_die=2048M@4096M.
BCT with the new DDR chip must be applied during flashing.
br
Based on R21.4 and follow the topic previous provide information to do,
U-Boot SPL 2014.10-rc2-dirty (Nov 04 2015 - 17:34:02)
U-Boot 2014.10-rc2-dirty (Nov 04 2015 - 17:34:02)
TEGRA124
tegra-pcie: PCI regions:
Hit any key to stop autoboot: 0#0 , OK
Booting using the fdt blob at 0x82000000
Starting kernel …
"
How to correct transfer DRAM size 4G from U-boot to kernel?
kayccc
March 21, 2016, 5:26am
30
Several requests have been made for >= 4GB RAM support for Tegra K1. While we don’t provide support for this configuration, there are patches to enable LPAE in your kernel for experimentation purpose, please check the details in following link:
[url]https://devtalk.nvidia.com/default/topic/924464/?comment=4836941[/url]
Thanks
Hi jachen,
Many Thanks.
Hi FrankPCP,
Would yo please file a new topic with clear description for what issue you met, then we can help to provide the suggestion?
Thanks