Re: [yocto-patches] [meta-rockchip] [PATCH] tinker-board-3: add

[Trevor Woerner <twoerner@gmail.com>]

On Thu 2025-12-18 @ 11:46:10 AM, Quentin Schulz via lists.yoctoproject.org wrote:
> Hi Michael,
> 
> On 12/18/25 7:03 AM, Michael Opdenacker via lists.yoctoproject.org wrote:
> > From: Michael Opdenacker <michael.opdenacker@rootcommit.com>
> > 
> > Add basic support for the Asus Tinker Board 3 [1] and 3S [2] SBCs,
> > with the Rockchip rk3566 SoC.
> > 
> > Support for such boards was introduced in the 6.19-rc1 version
> > of the Linux kernel:
> > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9f80b3952318d7ef18573a5010f06118602f992e
> > 
> > Therefore, the https://github.com/betafive/meta-linux-mainline/
> > layer is currently a prerequisite to build images for such machines.
> > 
> > Here are already supported features:
> > - Debug UART (/dev/ttyS2)
> > - SD card (/dev/mmcblk1)
> > - eMMC (/dev/mmcblk0, only on Tinker Board 3S)
> > - I2C:
> >    - i2c0 (internal bus with a PMIC and regulators)
> >    - i2c2 (internal bus with an at24 eeprom and an RTC device)
> > - USB 2.0 ports
> > - 2 GPIO LEDS
> > 
> > [1] https://tinker-board.asus.com/series/tinker-board-3.html
> > [2] https://tinker-board.asus.com/series/tinker-board-3s.html
> > 
> > Signed-off-by: Michael Opdenacker <michael.opdenacker@rootcommit.com>
> > ---
> >   conf/machine/include/tinker-board-3.inc     | 11 +++++++++++
> >   conf/machine/tinker-board-3.conf            | 10 ++++++++++
> >   conf/machine/tinker-board-3s.conf           | 10 ++++++++++
> >   recipes-kernel/linux/linux-yocto_%.bbappend |  2 ++
> >   4 files changed, 33 insertions(+)
> >   create mode 100644 conf/machine/include/tinker-board-3.inc
> >   create mode 100644 conf/machine/tinker-board-3.conf
> >   create mode 100644 conf/machine/tinker-board-3s.conf
> > 
> > diff --git a/conf/machine/include/tinker-board-3.inc b/conf/machine/include/tinker-board-3.inc
> > new file mode 100644
> > index 0000000..17d0ecc
> > --- /dev/null
> > +++ b/conf/machine/include/tinker-board-3.inc
> > @@ -0,0 +1,11 @@
> > +require conf/machine/include/rk3566.inc
> > +
> > +# Kernel provided by https://github.com/betafive/meta-linux-mainline/
> > +PREFERRED_PROVIDER_virtual/kernel = "linux-mainline"
> > +PREFERRED_VERSION_virtual/kernel = "6.19-rc1"
> > +
> 
> Not sure we really want to do this. Maybe wait for linux-yocto-dev to hit
> v6.19*? We used to do this for some Radxa board in the past I believe.

I would prefer to add this board once support is available via any of
the Yocto Project kernels. We've added boards to meta-rockchip many
times in the past when support was available through linux-yocto-dev.
Ideally upstream U-Boot would support it as well.