diff options
Diffstat (limited to 'Documentation/devicetree/bindings/dma/ti/k3-udma.yaml')
| -rw-r--r-- | Documentation/devicetree/bindings/dma/ti/k3-udma.yaml | 50 |
1 files changed, 32 insertions, 18 deletions
diff --git a/Documentation/devicetree/bindings/dma/ti/k3-udma.yaml b/Documentation/devicetree/bindings/dma/ti/k3-udma.yaml index 34780d7535b8..6a09bbf83d46 100644 --- a/Documentation/devicetree/bindings/dma/ti/k3-udma.yaml +++ b/Documentation/devicetree/bindings/dma/ti/k3-udma.yaml @@ -1,4 +1,6 @@ # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +# Copyright (C) 2019 Texas Instruments Incorporated +# Author: Peter Ujfalusi <peter.ujfalusi@ti.com> %YAML 1.2 --- $id: http://devicetree.org/schemas/dma/ti/k3-udma.yaml# @@ -7,7 +9,7 @@ $schema: http://devicetree.org/meta-schemas/core.yaml# title: Texas Instruments K3 NAVSS Unified DMA Device Tree Bindings maintainers: - - Peter Ujfalusi <peter.ujfalusi@ti.com> + - Peter Ujfalusi <peter.ujfalusi@gmail.com> description: | The UDMA-P is intended to perform similar (but significantly upgraded) @@ -45,7 +47,8 @@ allOf: properties: "#dma-cells": - const: 1 + minimum: 1 + maximum: 2 description: | The cell is the PSI-L thread ID of the remote (to UDMAP) end. Valid ranges for thread ID depends on the data movement direction: @@ -55,6 +58,8 @@ properties: Please refer to the device documentation for the PSI-L thread map and also the PSI-L peripheral chapter for the correct thread ID. + When #dma-cells is 2, the second parameter is the channel ATYPE. + compatible: enum: - ti,am654-navss-main-udmap @@ -66,34 +71,30 @@ properties: maxItems: 3 reg-names: - items: - - const: gcfg - - const: rchanrt - - const: tchanrt + items: + - const: gcfg + - const: rchanrt + - const: tchanrt msi-parent: true ti,sci: description: phandle to TI-SCI compatible System controller node - allOf: - - $ref: /schemas/types.yaml#/definitions/phandle + $ref: /schemas/types.yaml#/definitions/phandle ti,sci-dev-id: description: TI-SCI device id of UDMAP - allOf: - - $ref: /schemas/types.yaml#/definitions/uint32 + $ref: /schemas/types.yaml#/definitions/uint32 ti,ringacc: description: phandle to the ring accelerator node - allOf: - - $ref: /schemas/types.yaml#/definitions/phandle + $ref: /schemas/types.yaml#/definitions/phandle ti,sci-rm-range-tchan: description: | Array of UDMA tchan resource subtypes for resource allocation for this host - allOf: - - $ref: /schemas/types.yaml#/definitions/uint32-array + $ref: /schemas/types.yaml#/definitions/uint32-array minItems: 1 # Should be enough maxItems: 255 @@ -102,8 +103,7 @@ properties: description: | Array of UDMA rchan resource subtypes for resource allocation for this host - allOf: - - $ref: /schemas/types.yaml#/definitions/uint32-array + $ref: /schemas/types.yaml#/definitions/uint32-array minItems: 1 # Should be enough maxItems: 255 @@ -112,8 +112,7 @@ properties: description: | Array of UDMA rflow resource subtypes for resource allocation for this host - allOf: - - $ref: /schemas/types.yaml#/definitions/uint32-array + $ref: /schemas/types.yaml#/definitions/uint32-array minItems: 1 # Should be enough maxItems: 255 @@ -131,6 +130,21 @@ required: - ti,sci-rm-range-rchan - ti,sci-rm-range-rflow +if: + properties: + "#dma-cells": + const: 2 +then: + properties: + ti,udma-atype: + description: ATYPE value which should be used by non slave channels + $ref: /schemas/types.yaml#/definitions/uint32 + + required: + - ti,udma-atype + +unevaluatedProperties: false + examples: - |+ cbass_main { |