imx6ull-yocto ddr3 porting

[li_hong]

Hello Team，

     I have finished porting ddr3  from 512MiB to 1GiB successfully.I modified file "board/freescale/mx6ullevk/imximage.cfg" base on the parameters generated by  script "I.MX6ULL_DDR3_Script_Aid_V0.01.xlsx" and tool "ddr_stress_tester_v3.00". At the beginning，the board was unable to  start the kernel, and I try to comment uboot defconfig "CONFIG_IMX_OPTEE=y",it was able to start kernel normally.

    What I want to know is  what was the defconfig "CONFIG_IMX_OPTEE" used for and what  is the impact on the system when commenting the defconfig "CONFIG_IMX_OPTEE=y".

My develop environment:      

   Board:imx6ull

   Kernel:4.14.78

Thank you in advance.

[igorpadykov]

Hi hong

for OPTEE usage one can look at sect.5.6.10 OP-TEE enablement

attached Yocto Guide, For memory check  #define PHYS_SDRAM_SIZE

mx6ullevk.h\configs\include - uboot-imx - i.MX U-Boot 

pay attention to cma size.

Best regards
igor
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