Re: [PATCH v3 0/3] riscv: Add K230 DW 8250-compatible UART

[Kuan-Wei Chiu <visitorckw@gmail.com>]

On Thu, Aug 13, 2026 at 07:50:18PM +0930, Joel Stanley wrote:
> On Sat, 8 Aug 2026 at 12:02, WX Chen <wxchen0913@gmail.com> wrote:
> >
> > This series adds a QEMU model for the K230 SoC DesignWare 8250-compatible
> > UART controller, wires it into the K230 SoC, and adds qtest coverage.
> >
> > The implementation supports the registers and features required by the
> > Linux 8250_dw driver, providing an interactive shell over the serial port.
> 
> This is a model for the same hardware as this patch:
> 
> https://lore.kernel.org/qemu-riscv/20260616190147.1286316-2-visitorckw@gmail.com/
> 
> I'm not fussed which one we end up with in the tree, but it would be
> good to name it generically so other machines can use it.
> 
> 
Ah, I've been a bit busy lately and totally forgot to send out the next
version of the milk-v duo patchset. I will probably make the changes
and send it out soon.

As for the dw 8250 uart part, I'm not sure if I should keep my uart
patch in my series, or if I should wait for WX to respin his patchset
and get it merged into the riscv tree, and then rebase my patchset on
top of it?

Regards,
Kuan-Wei

> >
> > Signed-off-by: WX Chen <wxchen0913@gmail.com>
> > ---
> > Changes in v3:
> > - Removed all hardwired preprocessor #if conditionals from the logic
> > - Added a helper for the receiver line status interrupt check
> > - Encapsulated CPR and UCV register values in header macros
> > - Replaced g_usleep() with qtest_clock_step() in the qtest
> > - Link to v2: https://lore.kernel.org/qemu-devel/20260725-feat-k230-uart-v2-v2-0-d5fe82c47c28@gmail.com
> >
> > ---
> > WX Chen (3):
> >       hw/char: add K230 DW 8250-compatible UART
> >       hw/riscv: k230: connect DW 8250 UART
> >       tests/qtest: add K230 UART test
> >
> >  hw/char/Kconfig              |   3 +
> >  hw/char/k230_uart.c          | 816 +++++++++++++++++++++++++++++++++++++++++++
> >  hw/char/meson.build          |   1 +
> >  hw/riscv/k230.c              |  33 +-
> >  include/hw/char/k230_uart.h  | 198 +++++++++++
> >  include/hw/riscv/k230.h      |   6 +-
> >  tests/qtest/k230-uart-test.c | 514 +++++++++++++++++++++++++++
> >  tests/qtest/meson.build      |   2 +-
> >  8 files changed, 1559 insertions(+), 14 deletions(-)
> > ---
> > base-commit: 30e8a06b64aa58a3990ba39cb5d09531e7d265e0
> > change-id: 20260808-feat-k230-uart-v3-0ff3651d70ef
> >
> > Best regards,
> > --
> > WX Chen <wxchen0913@gmail.com>
> >
> >