On Thu, Sep 26, 2019 at 02:19:52PM +0300, Peter Ujfalusi wrote:
> Make the dma-channel-mask to be usable for controllers with more than 32
> channels.
>
> Signed-off-by: Peter Ujfalusi <peter.ujfalusi@xxxxxx>
> ---
> Documentation/devicetree/bindings/dma/dma-common.yaml | 9 ++++++++-
> 1 file changed, 8 insertions(+), 1 deletion(-)
>
> diff --git a/Documentation/devicetree/bindings/dma/dma-common.yaml b/Documentation/devicetree/bindings/dma/dma-common.yaml
> index ed0a49a6f020..4527f20301ff 100644
> --- a/Documentation/devicetree/bindings/dma/dma-common.yaml
> +++ b/Documentation/devicetree/bindings/dma/dma-common.yaml
> @@ -25,11 +25,18 @@ properties:
> Used to provide DMA controller specific information.
>
> dma-channel-mask:
> - $ref: /schemas/types.yaml#definitions/uint32
> description:
> Bitmask of available DMA channels in ascending order that are
> not reserved by firmware and are available to the
> kernel. i.e. first channel corresponds to LSB.
> + The first item in the array is for channels 0-31, the second is for
> + channels 32-63, etc.
> + allOf:
> + - $ref: /schemas/types.yaml#/definitions/uint32-array
> + items:
> + minItems: 1
> + # Should be enough
> + maxItems: 255
'items' has to be a separate sub-schema from $ref to have any effect:
allOf:
- $ref: /schemas/types.yaml#/definitions/uint32-array
items:
minItems: 1
# Should be enough
maxItems: 255
Or (note the added '-'):
allOf:
- $ref: /schemas/types.yaml#/definitions/uint32-array
- items:
minItems: 1
# Should be enough
maxItems: 255
The first way is my preference.
Rob
