Re: [PATCH v5 1/6] dt-bindings: serial: 8250: aspeed: add ast2600 and aspeed,vuart-over-pci

On Wed, Aug 05, 2026 at 02:19:48PM +0200, Grégoire Layet wrote:
> The ASPEED AST2600 has 2 Virtual UARTs accessible over PCI.
> The ASPEED AST2600 can be used as a PCI device.
> 2 Virtual UART can be exposed to the host via this PCI device.
> These are 8250-compatible register sets and can be used to have UART
> communication between the PCI BMC and the host.
> 
> This boolean can be set to specify if a VUART is used over PCI. A VUART
> over PCI needs a syscon phandle. The syscon gives a regmap to the SCU,
> which is used to set the enable bits of the PCI device.
> On the aspeed's chips, the clocks phandle already points at the SCU node.
> But deriving the regmap from the clock provider would misuse the clocks
> binding. An explicit syscon phandle states the dependency directly.
> 
> Signed-off-by: Grégoire Layet <[email protected]>
> ---
>  .../devicetree/bindings/serial/8250.yaml      | 42 ++++++++++++++++++-
>  1 file changed, 40 insertions(+), 2 deletions(-)

Reviewed-by: Krzysztof Kozlowski <[email protected]>

Best regards,
Krzysztof