Re: [RFC 02/10] riscv: dts: starfive: Add VisionFive 2 Lite board device tree

[Sumit Garg <sumit.garg@kernel.org>]

On Tue, Sep 02, 2025 at 01:03:09PM -0700, E Shattow wrote:
> Hi Hal,
> 
> On 8/28/25 23:09, Hal Feng wrote:
> > VisionFive 2 Lite is a mini SBC based on the StarFive JH7110S SoC.
> > 
> > Board features:
> > - JH7110S SoC
> > - 2/4/8 GiB LPDDR4 DRAM
> > - AXP15060 PMIC
> > - 40 pin GPIO header
> > - 1x USB 3.0 host port
> > - 3x USB 2.0 host port
> > - 1x M.2 M-Key (size: 2242)
> > - 1x MicroSD slot (optional non-removable eMMC)
> > - 1x QSPI Flash
> > - 1x I2C EEPROM
> > - 1x 1Gbps Ethernet port
> > - SDIO-based Wi-Fi & UART-based Bluetooth
> > - 1x HDMI port
> > - 1x 2-lane DSI
> > - 1x 2-lane CSI
> > 
> 
> Prefer to see subject line and URL of recent upstream discussion or git
> web commit for the new or modified dts changes from upstream of
> devicetree-rebasing in this commit and not just in the cover letter.
> 
> + From upstream LKML discussion "[RFC 3/3] riscv: dts: starfive: Add
> VisionFive 2 Lite board device tree" [1].
> + 1:
> https://lore.kernel.org/all/20250821100930.71404-4-hal.feng@starfivetech.com/
> 
> > Signed-off-by: Hal Feng <hal.feng@starfivetech.com>
> > ---
> >  .../jh7110s-starfive-visionfive-2-lite.dts    | 152 ++++++++++++++++++
> >  1 file changed, 152 insertions(+)
> >  create mode 100644 dts/upstream/src/riscv/starfive/jh7110s-starfive-visionfive-2-lite.dts
> > 
> > diff --git a/dts/upstream/src/riscv/starfive/jh7110s-starfive-visionfive-2-lite.dts b/dts/upstream/src/riscv/starfive/jh7110s-starfive-visionfive-2-lite.dts
> > new file mode 100644
> > index 00000000000..a0cb9912eb8
> > --- /dev/null
> > +++ b/dts/upstream/src/riscv/starfive/jh7110s-starfive-visionfive-2-lite.dts
> 
> No, do not directly add or modify upstream dts in dts/upstream/src
> subtree. We are not permitted in U-Boot to merge out-of-band devicetree
> changes to the devicetree-rebasing subtree as this creates more work for
> Tom, if I understand correctly?
> 
> Instead add or modify this dts as
> arch/riscv/dts/jh7110s-starfive-visionfive-2-lite-u-boot.dtsi filename.

That's right. dts/upstream subtree isn't allowed to be directly patched
but it is rather synced regularly with devicetree-rebasing. So please
follow documentation documentation here [1].

[1] https://docs.u-boot.org/en/latest/develop/devicetree/control.html#resyncing-with-devicetree-rebasing

-Sumit