dt-bindings: dma: dw: Add max burst transaction length property (2e7d7421) · Commits · 戴 / test

This array property is used to indicate the maximum burst transaction length supported by each DMA channel. Signed-off-by:

Documentation/devicetree/bindings/dma/snps,dma-spear1340.yaml

+15 −0

Original line number	Diff line number	Diff line
		@@ -120,6 +120,21 @@ properties:
		enum: [0, 1]
		default: 1

		snps,max-burst-len:
		$ref: /schemas/types.yaml#/definitions/uint32-array
		description: \|
		Maximum length of the burst transactions supported by the controller.
		This property defines the upper limit of the run-time burst setting
		(CTLx.SRC_MSIZE/CTLx.DST_MSIZE fields) so the allowed burst length
		will be from 1 to max-burst-len words. It's an array property with one
		cell per channel in the units determined by the value set in the
		CTLx.SRC_TR_WIDTH/CTLx.DST_TR_WIDTH fields (data width).
		items:
		maxItems: 8
		items:
		enum: [4, 8, 16, 32, 64, 128, 256]
		default: 256

		snps,dma-protection-control:
		$ref: /schemas/types.yaml#definitions/uint32
		description: \|