Searching for forum for help on dts devel for RK3568 board

[Erik Beck]

Hi Heiko,

Thanks for the fast response!

I'll give libera.chat a try.

I've been looking at the schematics, and they have helped somewhat, but
not getting me unstuck at the moment. The V2 should be pretty similar
to the V1, but there might be an important difference I'm overlooking.

I'll give a look at those boards you mentioned. I've been using the
BPI-R2-Pro for inspiration. It has also helped, but there might be
something in the other boards relating to the PCIe bus that might help.

I've been putting the work up onto github; current branch is:
https://github.com/TahomaSoft/openwrt-openwrt/tree/ExpDev-WIP7

Direct link to the DTS is:
https://github.com/TahomaSoft/openwrt-openwrt/blob/ExpDev-WIP7/target/linux/rockchip/patches-6.6/036-arm64-dts-rockchip-linkstar-minimal.patch

Thank you/Danke,

Erik
~~~
On Sun, 01 Jun 2025 23:11:56 +0200
Heiko Stübner <heiko at sntech.de> wrote:

> Hi Erik,
> 
> Am Sonntag, 1. Juni 2025, 22:39:01 Mitteleuropäische Sommerzeit
> schrieb Erik Beck:
> > I am working on initial support for an RK3568 board, the LinkStar
> > H68K-1421v1. I've made some progress, but can't get past turning on
> > one of the two PCIe3 Host bridges (pcie3x1 pcie at fe270000) without
> > breaking the boot.
> > 
> > Is this the right location to ask for help? If not, where might be?
> >  
> 
> The mailinglist mostly has patches on it, so I don't really know if
> people are expecting non-patch mails.
> 
> If in doubt the #linux-rockchip channel on the libera.chat IRC
> network [0] might help more. (people in different timezones, so
> probably no immediate answers)
> 
> 
> 
> For the multi-pci case I guess you could start by looking at other
> rk3568 board doing similar things, like the Qnap-TS433 [1], Radxa E25
> [2] or Nanopi-R5S [3].
> 
> Generally board designers often follow reference designs, so things
> might be similar.
> 
> Similarly, you might want to push your current in progress work on
> some github thing, so people can take a look.
> 
> 
> It also looks like the H68KV2 variant of the device has schematics
> available as linked from the bottom of [4], not sure how that relates
> to your device though.
> 
> 
> Heiko
> 
> 
> [0] https://libera.chat/
> [1]
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/arm64/boot/dts/rockchip/rk3568-qnap-ts433.dts
> [2]
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/arm64/boot/dts/rockchip/rk3568-radxa-e25.dts
> [3]
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/arm64/boot/dts/rockchip/rk3568-nanopi-r5s.dts
> [4]
> https://github.com/Seeed-Studio/wiki-documents/blob/docusaurus-version/docs/Network/RK_Devices/H68K_V2/H68KV2_install_system.md
> 
> 
> 
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