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Memory clock speed: 800MHz vs 1600MHz? (NM, RK3399 won't run >800MHz DDR)
tllim
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06-26-2020, 06:14 PM
(06-24-2020, 11:02 AM)Syonyk Wrote: It appears the RK3399 is limited to an 800MHz memory channel on DDR4.  It can do 933 on DDR3, and it might be worth messing with uboot to see if it can run 933 on DDR4, but there's apparently a hard check that doesn't allow it right now.  It might be worth experimenting with.

Should able to operate on 933MHz (PC-1866) LPDDR4. On the RockPro64 board, has been tested up to 1067MHz (PC-2133) LPDDR4 but no plan to release this driver.

Both ROckPro64 and Pinebook Pro PCB memory access simulation has been tested up to PC-2400.

Attached is the 933MHz LPDDR4 driver.


Attached Files
.zip   rk3399_ddr_933MHz_v1.11.zip (Size: 21.27 KB / Downloads: 511)
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RE: Memory clock speed: 800MHz vs 1600MHz? (NM, RK3399 won't run >800MHz DDR) - by tllim - 06-26-2020, 06:14 PM

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