Memory clock speed: 800MHz vs 1600MHz? (NM, RK3399 won't run >800MHz DDR)
06-26-2020, 07:22 PM
Thanks!
Now I have an excuse to learn to build uboot and ATF for the PBP. This looks like a binary blob for... one of the parts in the early boot process, based on the strings and where they show up in boot. Are there any particular license restrictions that apply to anything built with this?
It was unclear what the limit on the RK3399 was - the spec sheet seemed to imply 933MHz for LPDDR4, but the uboot source seemed to have a check for LPDDR4 that would cut it down to 800MHz. No idea on the history of that, but it sounds like 933MHz is fully within SoC and board specifications on the PBP?
Now I have an excuse to learn to build uboot and ATF for the PBP. This looks like a binary blob for... one of the parts in the early boot process, based on the strings and where they show up in boot. Are there any particular license restrictions that apply to anything built with this?
It was unclear what the limit on the RK3399 was - the spec sheet seemed to imply 933MHz for LPDDR4, but the uboot source seemed to have a check for LPDDR4 that would cut it down to 800MHz. No idea on the history of that, but it sounds like 933MHz is fully within SoC and board specifications on the PBP?