Hi Andre, On Fri, 2 Aug 2024 at 15:27, Andre Przywara <[email protected]> wrote: > > On Fri, 2 Aug 2024 12:24:56 +0530 > Sumit Garg <[email protected]> wrote: > > Hi Sumit, > > > Hi Chris, > > > > On Fri, 2 Aug 2024 at 04:29, Chris Morgan <[email protected]> wrote: > > > > > > From: Chris Morgan <[email protected]> > > > > > > The Anbernic RG35XX series of devices are based around an Allwinner > > > H700 SoC with 1GB of RAM, 2 SD cards, and multiple input buttons. > > > > > > This bootloader has been tested on the Anbernic RG35XX-2024 and > > > RG35XX-H, but should be suitable for the entire lineup of H700 based > > > devices. > > > > > > A future series of updates will add board selection logic to identify > > > and load the correct device tree automatically, and will switch to > > > utilizing a mainline device tree. > > > > I can already see the upstream DT subtree containing DTS for this board as: > > > > ./dts/upstream/src/arm64/allwinner/sun50i-h700-anbernic-rg35xx-2024.dts > > > > Are there any major differences that won't allow you to switch to > > OF_UPSTREAM for this board? > > In this case there are no differences between the DT in the kernel repo > and what we put in U-Boot. The main reason for me holding back the switch > to OF_UPSTREAM for the H616 was indeed the rather slow update cadence, > which somewhat slows down upstreaming of new boards like this. Doing this > separately gives us a bit more control and freedom to take DT patches > early, for instance when they appear in some Linux -rc1, or even before > that (linux-next). > I explained my position in more detail here: > https://lore.kernel.org/u-boot/[email protected]/ >
I can see the reasoning, thanks. > I think Tom partly convinced me that regular updates together with > cherry-picking should solve most of those problems, so I will probably do > the switch for the next cycle. > Glad to hear that. Cherry-picking has been working really well for Rockchip platforms [1] [2] [3] as the changes appear in Linux -rc1. Also, it pretty much avoids maintainers to review the DT changes unless there are some bits added via *-u-boot.dtsi. [1] https://patchwork.ozlabs.org/project/uboot/list/?series=417233 [2] https://patchwork.ozlabs.org/project/uboot/list/?series=417377 [3] https://patchwork.ozlabs.org/project/uboot/list/?series=417353 -Sumit
