Re: [PATCH v2 0/3] riscv: Add K230 DDR controller and PHY models

On Fri, 2026-08-07 at 18:21 +0800, Junze Cao wrote:
> The K230 SDK U-Boot SPL initializes DRAM by programming the DDRC CFG
> and DDR PHY MMIO regions. The k230 machine currently exposes the DDR
> configuration region as unimplemented and does not provide the PHY,
> so
> the SPL cannot complete the training and DFI handshakes.
> 
> Add minimal models for the register behavior exercised by the SDK
> SPL.
> The controller model provides reset values, register access policy,
> DFI
> and software-update handshakes, and the Init-to-Normal transition.
> The
> PHY model provides CSR ownership, the training mailbox, and DFI
> completion. Wire both devices into the k230 machine and document the
> resulting SPL support.
> 
> These device models allow firmware to complete the DDR initialization
> sequence.
> 
> Changes in v2:
> 
> * Add LOG_UNIMP messages for unimplemented DDR PHY register accesses,
>   including reads returning zero and ignored writes.
> 
> Testing performed:
> 
> * scripts/checkpatch.pl --branch upstream/master..HEAD
> * meson test -C build --print-errorlogs
>   qemu:qtest-riscv64/k230-ddr-test (6 subtests passed)
> * Booted the K230 SDK U-Boot SPL through DDR initialization to its
> SPI
>   boot path
> 
> ---
> Junze Cao (3):
>       hw/misc: Add K230 DDR controller and PHY models
>       hw/riscv: Connect K230 DDR controller and PHY models
>       tests/qtest: Add K230 DDR controller tests

Thanks!

Applied to riscv-to-apply.next

Alistair

> 
>  MAINTAINERS                 |   3 +
>  docs/system/riscv/k230.rst  |   4 +
>  hw/misc/k230_ddr.c          | 556
> ++++++++++++++++++++++++++++++++++++++++++++
>  hw/misc/meson.build         |   1 +
>  hw/riscv/k230.c             |  19 +-
>  include/hw/misc/k230_ddr.h  |  59 +++++
>  include/hw/riscv/k230.h     |   4 +
>  tests/qtest/k230-ddr-test.c | 226 ++++++++++++++++++
>  tests/qtest/meson.build     |   3 +-
>  9 files changed, 871 insertions(+), 4 deletions(-)
> ---
> base-commit: 3e3ccab106f879b1512f8e0d51a827dd4de30e22
> change-id: 20260807-k230-ddr-v2-f8037b6ac237
> 
> Best regards,
> --  
> Junze Cao <[email protected]>
>