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Enable high speed and heavy load for DDR4 for LSCH3

Joakim Tjernlund u-boot 1 version New

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  1. v1 Latest0 of 7 patches 0 repliesNew

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None of the 7 patches the cover letter announces are in this archive.

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Cover letter [U-Boot] [PATCH v1 0/7] Enable high speed and heavy load for DDR4 for LSCH3
Quoted 3 lines · York Sun

This patch set revises the DDR driver to support higher speed for DDR4 under heavy load (two dual-rank DIMMs) for four-chipselect interleaving. Single quad-rank DIMM is not supported yet.

Hi York

Seeing these patches reminds me about something I have been mening to ask, Is it possible init the ddr controller/ddr ram (using ECC also) but still retain (parts of) memory contents?

I am looking at keeping data at the end of memory when performing a warm start, but still init the controll/ddr ram (without D_INIT set). This way one could pick up any changes to DDR timing if needed. Before reboot, ddr ram is set to Self Refresh(SR).

Jocke