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Subject[PATCH 2/5] dt-bindings: dma: dw: Add max burst transaction length property bindings
Date
From: Serge Semin <Sergey.Semin@baikalelectronics.ru>

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

Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Signed-off-by: Alexey Malahov <Alexey.Malahov@baikalelectronics.ru>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Paul Burton <paulburton@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
---
.../devicetree/bindings/dma/snps,dma-spear1340.yaml | 12 ++++++++++++
1 file changed, 12 insertions(+)

diff --git a/Documentation/devicetree/bindings/dma/snps,dma-spear1340.yaml b/Documentation/devicetree/bindings/dma/snps,dma-spear1340.yaml
index d7f9383ceb8f..308ec6482064 100644
--- a/Documentation/devicetree/bindings/dma/snps,dma-spear1340.yaml
+++ b/Documentation/devicetree/bindings/dma/snps,dma-spear1340.yaml
@@ -126,6 +126,18 @@ properties:
enum: [0, 1]
default: 0

+ snps,max-burst-len:
+ description: |
+ Maximum length of burst transactions supported by hardware.
+ It's an array property with one cell per channel in units of
+ CTLx register SRC_TR_WIDTH/DST_TR_WIDTH field.
+ allOf:
+ - $ref: /schemas/types.yaml#/definitions/uint32-array
+ - maxItems: 8
+ items:
+ enum: [4, 8, 16, 32, 64, 128, 256]
+ default: 0
+
snps,dma-protection-control:
description: |
Bits one-to-one passed to the AHB HPROT[3:1] bus. Each bit setting
--
2.25.1
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