[PATCH 0/3] Adding device tree and binding for Nvidia mgx cx8 switchboard

[Rob Herring (Arm)]

On Fri, 15 Aug 2025 12:45:54 -0700, Marc Olberding wrote:
> Patch 1 Adds the binding for the Nvidia mgx cx8 switchboard
> Patch 2 Adds dtsi's for the mgx cx8 switchboard itself
> Patch 3 Adds the dts for the mgx cx8 switchboard motherboard reference implementation.
> 
> This is an Aspeed AST2600 based reference implementation for a BMC
> managing an Nvidia mgx cx8 switchboard. Dtsi files are broken out for
> managing the mgx cx8 switchboard over i2c, so that others may reuse these
> if they choose to implement their own board. There are two dtsi files
> since the i2c topology is not symmetric between busses going to the mgx cx8
> switchboard.
> 
> Reference to Ast2600 SoC [1].
> 
> Link: https://www.aspeedtech.com/server_ast2600/ [1]
> 
> 
> Signed-off-by: Marc Olberding <molberding at nvidia.com>
> ---
> Marc Olberding (3):
>       dt-bindings: arm: aspeed: Add Nvidia's mgx4u BMC
>       ARM: dts: aspeed: Add device tree includes for the cx8 switchboard
>       ARM: dts: aspeed: Add device tree for mgx4u BMC
> 
>  .../devicetree/bindings/arm/aspeed/aspeed.yaml     |    1 +
>  arch/arm/boot/dts/aspeed/Makefile                  |    1 +
>  .../boot/dts/aspeed/aspeed-bmc-nvidia-mgx4u.dts    | 1078 ++++++++++++++++++++
>  .../dts/aspeed/nvidia-mgx-cx8-switch-north.dtsi    |   80 ++
>  .../dts/aspeed/nvidia-mgx-cx8-switch-south.dtsi    |   80 ++
>  5 files changed, 1240 insertions(+)
> ---
> base-commit: 7bac2c97af4078d7a627500c9bcdd5b033f97718
> change-id: 20250813-mgx4u_devicetree-c2e130607089
> 
> Best regards,
> --
> Marc Olberding <molberding at nvidia.com>
> 
> 
> 


My bot found new DTB warnings on the .dts files added or changed in this
series.

Some warnings may be from an existing SoC .dtsi. Or perhaps the warnings
are fixed by another series. Ultimately, it is up to the platform
maintainer whether these warnings are acceptable or not. No need to reply
unless the platform maintainer has comments.

If you already ran DT checks and didn't see these error(s), then
make sure dt-schema is up to date:

  pip3 install dtschema --upgrade


This patch series was applied (using b4) to base:
 Base: using specified base-commit 7bac2c97af4078d7a627500c9bcdd5b033f97718

If this is not the correct base, please add 'base-commit' tag
(or use b4 which does this automatically)

New warnings running 'make CHECK_DTBS=y for arch/arm/boot/dts/aspeed/' for 20250815-mgx4u_devicetree-v1-0-66db6fa5a7e4 at nvidia.com:

arch/arm/boot/dts/aspeed/aspeed-bmc-nvidia-mgx4u.dtb: timer (arm,armv7-timer): 'clocks' does not match any of the regexes: '^pinctrl-[0-9]+$'
	from schema $id: http://devicetree.org/schemas/timer/arm,arch_timer.yaml#
arch/arm/boot/dts/aspeed/aspeed-bmc-nvidia-mgx4u.dtb: /sdram at 1e6e0000: failed to match any schema with compatible: ['aspeed,ast2600-sdram-edac', 'syscon']
arch/arm/boot/dts/aspeed/aspeed-bmc-nvidia-mgx4u.dtb: bus at 1e600000 (aspeed,ast2600-ahbc): compatible: ['aspeed,ast2600-ahbc', 'syscon'] is too long
	from schema $id: http://devicetree.org/schemas/bus/aspeed,ast2600-ahbc.yaml#
arch/arm/boot/dts/aspeed/aspeed-bmc-nvidia-mgx4u.dtb: spi at 1e630000 (aspeed,ast2600-spi): Unevaluated properties are not allowed ('fmc-spi-user-mode' was unexpected)
	from schema $id: http://devicetree.org/schemas/spi/aspeed,ast2600-fmc.yaml#
arch/arm/boot/dts/aspeed/aspeed-bmc-nvidia-mgx4u.dtb: syscon at 1e6e2000 (aspeed,ast2600-scu): 'smp-memram at 180' does not match any of the regexes: '^interrupt-controller@[0-9a-f]+$', '^p2a-control@[0-9a-f]+$', '^pinctrl(@[0-9a-f]+)?$', '^pinctrl-[0-9]+$', '^silicon-id@[0-9a-f]+$'
	from schema $id: http://devicetree.org/schemas/mfd/aspeed,ast2x00-scu.yaml#
arch/arm/boot/dts/aspeed/aspeed-bmc-nvidia-mgx4u.dtb: /ahb/apb at 1e6e0000/syscon at 1e6e2000/smp-memram at 180: failed to match any schema with compatible: ['aspeed,ast2600-smpmem']
arch/arm/boot/dts/aspeed/aspeed-bmc-nvidia-mgx4u.dtb: /ahb/apb at 1e6e0000/display at 1e6e6000: failed to match any schema with compatible: ['aspeed,ast2600-gfx', 'syscon']
arch/arm/boot/dts/aspeed/aspeed-bmc-nvidia-mgx4u.dtb: adc at 1e6e9000 (aspeed,ast2600-adc0): 'interrupts' does not match any of the regexes: '^pinctrl-[0-9]+$'
	from schema $id: http://devicetree.org/schemas/iio/adc/aspeed,ast2600-adc.yaml#
arch/arm/boot/dts/aspeed/aspeed-bmc-nvidia-mgx4u.dtb: adc at 1e6e9100 (aspeed,ast2600-adc1): 'interrupts' does not match any of the regexes: '^pinctrl-[0-9]+$'
	from schema $id: http://devicetree.org/schemas/iio/adc/aspeed,ast2600-adc.yaml#
arch/arm/boot/dts/aspeed/aspeed-bmc-nvidia-mgx4u.dtb: crypto at 1e6fa000 (aspeed,ast2600-acry): 'aspeed,ahbc' does not match any of the regexes: '^pinctrl-[0-9]+$'
	from schema $id: http://devicetree.org/schemas/crypto/aspeed,ast2600-acry.yaml#
arch/arm/boot/dts/aspeed/aspeed-bmc-nvidia-mgx4u.dtb: sdc at 1e740000 (aspeed,ast2600-sd-controller): sdhci at 1e740100:compatible: ['aspeed,ast2600-sdhci', 'sdhci'] is too long
	from schema $id: http://devicetree.org/schemas/mmc/aspeed,sdhci.yaml#
arch/arm/boot/dts/aspeed/aspeed-bmc-nvidia-mgx4u.dtb: sdc at 1e740000 (aspeed,ast2600-sd-controller): sdhci at 1e740200:compatible: ['aspeed,ast2600-sdhci', 'sdhci'] is too long
	from schema $id: http://devicetree.org/schemas/mmc/aspeed,sdhci.yaml#
arch/arm/boot/dts/aspeed/aspeed-bmc-nvidia-mgx4u.dtb: /ahb/sdc at 1e740000/sdhci at 1e740100: failed to match any schema with compatible: ['aspeed,ast2600-sdhci', 'sdhci']
arch/arm/boot/dts/aspeed/aspeed-bmc-nvidia-mgx4u.dtb: /ahb/sdc at 1e740000/sdhci at 1e740200: failed to match any schema with compatible: ['aspeed,ast2600-sdhci', 'sdhci']
arch/arm/boot/dts/aspeed/aspeed-bmc-nvidia-mgx4u.dtb: /ahb/apb at 1e780000/timer at 1e782000: failed to match any schema with compatible: ['aspeed,ast2600-timer']
arch/arm/boot/dts/aspeed/aspeed-bmc-nvidia-mgx4u.dtb: lpc at 1e789000 (aspeed,ast2600-lpc-v2): reg-io-width: 4 is not of type 'object'
	from schema $id: http://devicetree.org/schemas/mfd/aspeed-lpc.yaml#
arch/arm/boot/dts/aspeed/aspeed-bmc-nvidia-mgx4u.dtb: lpc at 1e789000 (aspeed,ast2600-lpc-v2): lpc-snoop at 80: 'clocks' does not match any of the regexes: '^pinctrl-[0-9]+$'
	from schema $id: http://devicetree.org/schemas/mfd/aspeed-lpc.yaml#
arch/arm/boot/dts/aspeed/aspeed-bmc-nvidia-mgx4u.dtb: kcs at 24 (aspeed,ast2500-kcs-bmc-v2): 'clocks' does not match any of the regexes: '^pinctrl-[0-9]+$'
	from schema $id: http://devicetree.org/schemas/ipmi/aspeed,ast2400-kcs-bmc.yaml#
arch/arm/boot/dts/aspeed/aspeed-bmc-nvidia-mgx4u.dtb: kcs at 28 (aspeed,ast2500-kcs-bmc-v2): 'clocks' does not match any of the regexes: '^pinctrl-[0-9]+$'
	from schema $id: http://devicetree.org/schemas/ipmi/aspeed,ast2400-kcs-bmc.yaml#
arch/arm/boot/dts/aspeed/aspeed-bmc-nvidia-mgx4u.dtb: kcs at 2c (aspeed,ast2500-kcs-bmc-v2): 'clocks' does not match any of the regexes: '^pinctrl-[0-9]+$'
	from schema $id: http://devicetree.org/schemas/ipmi/aspeed,ast2400-kcs-bmc.yaml#
arch/arm/boot/dts/aspeed/aspeed-bmc-nvidia-mgx4u.dtb: kcs at 114 (aspeed,ast2500-kcs-bmc-v2): 'clocks' does not match any of the regexes: '^pinctrl-[0-9]+$'
	from schema $id: http://devicetree.org/schemas/ipmi/aspeed,ast2400-kcs-bmc.yaml#
arch/arm/boot/dts/aspeed/aspeed-bmc-nvidia-mgx4u.dtb: /ahb/apb at 1e780000/lpc at 1e789000/lhc at a0: failed to match any schema with compatible: ['aspeed,ast2600-lhc']
arch/arm/boot/dts/aspeed/aspeed-bmc-nvidia-mgx4u.dtb: /ahb/apb at 1e780000/lpc at 1e789000/ibt at 140: failed to match any schema with compatible: ['aspeed,ast2600-ibt-bmc']
arch/arm/boot/dts/aspeed/aspeed-bmc-nvidia-mgx4u.dtb: fsi at 1e79b000 (aspeed,ast2600-fsi-master): compatible: ['aspeed,ast2600-fsi-master', 'fsi-master'] is too long
	from schema $id: http://devicetree.org/schemas/fsi/aspeed,ast2600-fsi-master.yaml#
arch/arm/boot/dts/aspeed/aspeed-bmc-nvidia-mgx4u.dtb: /ahb/apb at 1e790000/fsi at 1e79b000: failed to match any schema with compatible: ['aspeed,ast2600-fsi-master', 'fsi-master']
arch/arm/boot/dts/aspeed/aspeed-bmc-nvidia-mgx4u.dtb: fsi at 1e79b100 (aspeed,ast2600-fsi-master): compatible: ['aspeed,ast2600-fsi-master', 'fsi-master'] is too long
	from schema $id: http://devicetree.org/schemas/fsi/aspeed,ast2600-fsi-master.yaml#
arch/arm/boot/dts/aspeed/aspeed-bmc-nvidia-mgx4u.dtb: /ahb/apb at 1e790000/fsi at 1e79b100: failed to match any schema with compatible: ['aspeed,ast2600-fsi-master', 'fsi-master']
arch/arm/boot/dts/aspeed/aspeed-bmc-nvidia-mgx4u.dtb: /ahb/apb at 1e790000/dma-controller at 1e79e000: failed to match any schema with compatible: ['aspeed,ast2600-udma']