Other Parts Discussed in Thread: SYSCONFIG
Tool/software:
Hello,
I encounter a memory violation with TiSDK 10.00.07.04 when test RAM with stress-ng or flashing eMMC with the dd command.
We have 2 board design base on the design of the TI AM625 SK EVM board, on use 2 ddr4 chip of 1GBytes and the other one use 2 ddr4 chip of 2GBytes, both are connected to a unique chip select signal.
I use the default ddr4 configuration of the TiSDK for ddr4, rank = 1 and density = 16G bits .
The result are:
- 2 x 2GB ddr4 is working fine.
- 2 x 1GB ddr4, and linux raised a memory violation that indicate an access in out of the memory.
I try the ddr4 configuration of the TiSDK for ddr4, rank = 1 and density = 8G bits.
- 2 x 1GB ddr4, and doesn't raised the memory violation but the u-boot tftpboot flow is very slow and failed some times.
1- Could you confirm what should be the configuration in sys_config tools for both ddr4 configuration.
2- What is the the purpose of the setting : CONFIG_ARCH_FIXUP_FDT_MEMORY ? Should I disable this feature ?
CONFIG_ARCH_FIXUP_FDT_MEMORY: │
│ │
│ Enable FDT memory map syncup before OS boot. This feature can be │
│ used for booting OS with different memory setup where the part of │
│ the memory location should be used for different purpose. │
│ │
│ Symbol: ARCH_FIXUP_FDT_MEMORY [=y] │
│ Type : bool │
│ Prompt: Enable arch_fixup_memory_banks() call │
│ Location: │
│ -> Boot options │
│ -> Devicetree fixup │
│ Defined at boot/Kconfig:1600 │
│ Depends on: OF_LIBFDT [=y] │
│
The u-boot configuration use is am62x_evm_r5_defconfig for R5 and am62x_evm_a53_defconfig for A53.
The memory violation doesn't occurs when using Ti SDK 08.06.
Could you please, help me to identify the issue, let me know what inputs you need ?
Regards,
Alexis.
