uboot ddr stress tester can not set VDD 1.325v like windows tester

[xiangkunkong]

Hi,

Now i'm trying ddr stress test on my board(imx6q) in u-boot,

but i can not set VDD_SOC_CAP/VDD_ARM_CAP 1.325v.(Max is 1.3v)

How can i set more than 1.3v VDD?

below is uboot log:

=====================================

Would do you want to change VDD_SOC_CAP/VDD_ARM_CAP voltage? Type 'y' to run and 'n' to skip

Please select VDD_SOC_CAP volatage on the board
Type 0 for 1.15V; 1 for 1.175V; 2 for 1.2V; 3 for 1.225V; 4 for 1.25V; 5 for 1.275V; 6 for 1.3V

[igorpadykov · Accepted solution]

Hi xiangkunkong

one can try to change them using PMU_REG_CORE register described in

sect.50.7.4 Digital Regulator Core Register (PMU_REG_COREn)

i.MX 6Dual/6Quad Applications Processor Reference Manual

Best regards
igor

[xiangkunkong]

Hi igor, 

Thanks for your reply. it works for me.

Best regards!

Kong