topic How to set DDR frequency to 400MHz on imx6Q in i.MX Processors

How to set DDR frequency to 400MHz on imx6Q

songyonglai — Tue, 24 Mar 2020 09:20:51 GMT

Hi :

The imx6q DDR frequency is 528Mhz. I want to set DDR to run on 400MHz , how to modify the uboot config file mx6q_4x_mt41j128.cfg, or I should modify another file. I use the fsl android sdk imx6q-N7.1.1-1.0.0.

Thanks very much.

Re: How to set DDR frequency to 400MHz on imx6Q

igorpadykov — Tue, 24 Mar 2020 10:37:16 GMT

Hi yonglai

one can try solutions provided on

How to change DDR3 clock speed in U-boot/U-boot SPL?

https://community.nxp.com/thread/306143

Best regards
igor
-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
-----------------------------------------------------------------------------------------------------------------------

Re: How to set DDR frequency to 400MHz on imx6Q

songyonglai — Wed, 25 Mar 2020 02:39:50 GMT

Hi igorpadykov:

Thanks for your reply, I modified the plugin.S file as follows, but it did not work, am I right? Thanks very much.

#elif defined (CONFIG_MX6Q)

/*imx6dqsabresd_ddr_settting*/

imx6dlsabresd_ddr_setting

#else

#error "SOC not configured"

#endif