Re: [PATCH v4 3/3] spi: dt-bindings: Add an example with two stacked flashes

[Rob Herring <robh@kernel.org>]

On Fri, Dec 10, 2021 at 09:10:39PM +0100, Miquel Raynal wrote:
> Provide an example of how to describe two flashes in eg. stacked mode.
> 
> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
> Reviewed-by: Rob Herring <robh@kernel.org>
> ---
>  Documentation/devicetree/bindings/spi/spi-controller.yaml | 7 +++++++
>  1 file changed, 7 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/spi/spi-controller.yaml b/Documentation/devicetree/bindings/spi/spi-controller.yaml
> index 36b72518f565..048d2bbc74a5 100644
> --- a/Documentation/devicetree/bindings/spi/spi-controller.yaml
> +++ b/Documentation/devicetree/bindings/spi/spi-controller.yaml
> @@ -139,4 +139,11 @@ examples:
>              spi-max-frequency = <100000>;
>              reg = <1>;
>          };
> +
> +        flash@2 {
> +          compatible = "jedec,spi-nor";
> +          spi-max-frequency = <50000000>;
> +          reg = <2>, <3>;
> +          stacked-memories = /bits/ 64 <0x10000000>, /bits/ 64 <0x10000000>;

stacked-memories = /bits/ 64 <0x10000000 0x10000000>;

While the source syntax allows for multiple (and mixed) /bits/ 
annotations, that's not something we support really.

If you have problems with the schema tools on this, let me know. The 
handling of this is not the greatest.

Rob