Re: [PATCH v5 6/9] spi: dt-bindings: adi,axi-spi-engine: add multi-lane support

Jonathan Cameron
2026-01-14T09:12:04Z

On Mon, 12 Jan 2026 11:45:24 -0600
David Lechner <dlechner@baylibre.com> wrote:

> Extend the ADI AXI SPI engine binding for multiple data lanes. This SPI
> controller has a capability to read multiple data words at the same
> time (e.g. for use with simultaneous sampling ADCs). The current FPGA
> implementation can support up to 8 data lanes at a time (depending on a
> compile-time configuration option).
>
> Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
> Signed-off-by: David Lechner <dlechner@baylibre.com>
LGTM
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>

> ---
> v4 changes:
> - Update to use spi-{tx,rx}-bus-width properties.
> ---
> .../devicetree/bindings/spi/adi,axi-spi-engine.yaml | 15 +++++++++++++++
> 1 file changed, 15 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/spi/adi,axi-spi-engine.yaml b/Documentation/devicetree/bindings/spi/adi,axi-spi-engine.yaml
> index 4b3828eda6cb..0f2448371f17 100644
> --- a/Documentation/devicetree/bindings/spi/adi,axi-spi-engine.yaml
> +++ b/Documentation/devicetree/bindings/spi/adi,axi-spi-engine.yaml
> @@ -70,6 +70,21 @@ required:
>
> unevaluatedProperties: false
>
> +patternProperties:
> + "^.*@[0-9a-f]+":
> + type: object
> +
> + properties:
> + spi-rx-bus-width:
> + maxItems: 8
> + items:
> + enum: [0, 1]
> +
> + spi-tx-bus-width:
> + maxItems: 8
> + items:
> + enum: [0, 1]
> +
> examples:
> - |
> spi@44a00000 {
>