Re: [PATCH v6 00/13] Ambarella CV75 SoC minimal bring-up

[Jerome Brunet <jbrunet@baylibre.com>]

On ven. 04 sept. 2026 at 08:56, Krzysztof Kozlowski <krzk@kernel.org> wrote:

> On 04/09/2026 08:54, Jerome Brunet wrote:
>> On ven. 04 sept. 2026 at 14:38, Long Zhao via B4 Relay <devnull+longzhao.ambarella.com@kernel.org> wrote:
>>>
>>>  .../devicetree/bindings/arm/ambarella.yaml         |  24 +
>>>  .../bindings/clock/ambarella,cv75-rct.yaml         |  64 ++
>>>  .../devicetree/bindings/gpio/pl061-gpio.yaml       |  32 +-
>>>  Documentation/devicetree/bindings/mfd/syscon.yaml  |   1 +
>>>  .../bindings/pinctrl/ambarella,cv75-pinctrl.yaml   | 239 +++++++
>>>  .../bindings/serial/snps-dw-apb-uart.yaml          |   1 +
>>>  .../devicetree/bindings/vendor-prefixes.yaml       |   2 +
>>>  MAINTAINERS                                        |  14 +
>>>  arch/arm64/Kconfig.platforms                       |   6 +
>>>  arch/arm64/boot/dts/Makefile                       |   1 +
>>>  arch/arm64/boot/dts/ambarella/Makefile             |   3 +
>>>  arch/arm64/boot/dts/ambarella/cv75-evk.dts         |  30 +
>>>  arch/arm64/boot/dts/ambarella/cv75.dtsi            | 177 +++++
>>>  arch/arm64/configs/defconfig                       |   1 +
>>>  drivers/clk/Kconfig                                |   1 +
>>>  drivers/clk/Makefile                               |   1 +
>>>  drivers/clk/ambarella/Kconfig                      |  13 +
>>>  drivers/clk/ambarella/Makefile                     |   6 +
>>>  drivers/clk/ambarella/ccu-cv75.c                   | 296 ++++++++
>>>  drivers/clk/ambarella/ccu_common.c                 |  60 ++
>>>  drivers/clk/ambarella/ccu_common.h                 |  25 +
>>>  drivers/clk/ambarella/ccu_mux_div.c                | 234 +++++++
>>>  drivers/clk/ambarella/ccu_mux_div.h                |  35 +
>>>  drivers/clk/ambarella/ccu_pll.c                    | 421 ++++++++++++
>>>  drivers/clk/ambarella/ccu_pll.h                    |  70 ++
>>>  drivers/gpio/Kconfig                               |   2 +
>>>  drivers/gpio/gpio-pl061.c                          | 342 +++++----
>>>  drivers/gpio/gpio-regmap.c                         |  24 +-
>>>  drivers/pinctrl/Kconfig                            |  15 +
>>>  drivers/pinctrl/Makefile                           |   2 +
>>>  drivers/pinctrl/pinctrl-ambarella-cv75.c           | 561 +++++++++++++++
>>>  drivers/pinctrl/pinctrl-ambarella.c                | 761 +++++++++++++++++++++
>>>  drivers/pinctrl/pinctrl-ambarella.h                |  50 ++
>>>  drivers/tty/serial/8250/8250_dw.c                  |  34 +
>>>  include/dt-bindings/clock/ambarella,cv75-rct.h     |  15 +
>>>  include/linux/amba/bus.h                           |   1 +
>>>  include/linux/gpio/regmap.h                        |  13 +
>>>  37 files changed, 3439 insertions(+), 138 deletions(-)
>> 
>> That is a lot of stuff mixed into a single series that could easily split
>
> Well, not easily, because each split patchset would rely on non-existing
> CONFIG which could trigger warnings.
>
> Contributors follow here the correct and documented process of new SoC
> platform, I don't get why now only this patchset has to be split...

Are you referring to this or something else ?

"""
one patchset containing new arch/foo/Kconfig entry, DTS files, MAINTAINERS file entry and *optionally initial drivers* with their Devicetree bindings
"""

No problem with that, I was merely trying to say that mixing 4 or 5 trees
in a single patchset is pushing it a little and it does not solve the
dependency problem you've mentioned, it just move it.

>
>
> Best regards,
> Krzysztof

-- 
Jerome