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+--- Thread: PinePhone development questions (Or: U-Boot PinePhone 3GB support) (/showthread.php?tid=11236)
PinePhone development questions (Or: U-Boot PinePhone 3GB support) - jbit - 09-01-2020
Hi,
I'm digging a bit into the nuts and bolts of the PinePhone, and would like to have a ground up OS built working for when my 3GB PMOS edition arrives. I noticed on IRC that there are known issues with OS support and the 3GB PinePhone, so I thought I'd dig into what's going on, here's what I've found so far, but please correct me if I'm wrong
- The root cause is that upstream u-boot doesn't support dual-rank dram on the R40/A64 SoCs, so it panics.
- There was a patch submitted upstream to the u-boot project, but never got merged (because it's RFC, I imagine): https://lists.denx.de/pipermail/u-boot/2020-June/416856.html
- PMOS uses source from Pine64/u-boot, and then applies a local copy of the dualrank patch. (According to this APKBUILD)
- JumpDrive uses source from upstream u-boot, and then applies a couple of local patches (including the dualrank patch). (According to this Makefile)
- Crust uses source from Pine64/u-boot, and then applies a local copy of the dualrank patch. (According to the gitlab config)
So I have a few questions:
- What's holding up the patch getting into u-boot upstream?
- Is upstream patch progress tracked anywhere?
- Is there anything stopping the patch being committed to the Pine64/u-boot repo? (Which would allow projects to simply point at that commit to get support)
- Is there anywhere where cross-OS efforts like u-boot fixes/kernel fixes/etc are being tracked and coordinated?
Cheers
jbit
RE: PinePhone development questions (Or: U-Boot PinePhone 3GB support) - jbit - 09-03-2020
The patch is now in the crust branch and wheels are in motion to get it upstream! Thanks for the awesome work everybody
https://gitlab.com/pine64-org/u-boot/-/tree/crust