+ Peng On Wed, Nov 7, 2018 at 4:58 AM Jon Nettleton <j...@solid-run.com> wrote: > > I have been spending some time on this, at least from the lpddr4 side. > There is a good amount of this that can be abstracted out and made > into general initialization routines. This is all well and good and > you can see that Boundary Devices has already codified some of these > values here. > https://github.com/boundarydevices/u-boot-imx6/blob/boundary-v2018.07/board/boundary/nitrogen8m/ddr/ddrphy_train.c > > However after you generate the script from the spreadsheet you then > need to run it through a calibration routine, which is a Windows > program that takes the values from the spreadsheets and runs them > against the device and provides some tuned phy values based on the > device. I don't see a good way to get around just having this chunk > of code be a board specific function that runs the register settings > that are spit out by the NXP tool. > > As for the initialization I am not sure how much changes depending if > the board is using DDR3, DDR4 or LPDDR4. It would be great if we > could come up with some general direction on this and move things > forward.
Peng on Cc has been working on this and hopefully will be able to post a new series soon. _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot
