dma/ti/k3-bcdma.yaml

1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
5 ---
6 $id: http://devicetree.org/schemas/dma/ti/k3-bcdma.yaml#
7 $schema: http://devicetree.org/meta-schemas/core.yaml#
12   - Peter Ujfalusi <peter.ujfalusi@gmail.com>
16   mode channels of K3 UDMA-P.
23   Split channels can be used to service PSI-L based peripherals.
24   The peripherals can be PSI-L native or legacy, non PSI-L native peripherals
25   with PDMAs. PDMA is tasked to act as a bridge between the PSI-L fabric and the
34       - ti,am62a-dmss-bcdma-csirx
35       - ti,am64-dmss-bcdma
36       - ti,j721s2-dmss-bcdma-csi
42   reg-names:
46   "#dma-cells":
50         0 - split channel
51         1 - block copy channel using global trigger 1
52         2 - block copy channel using global trigger 2
53         3 - block copy channel using local trigger
57           PSI-L thread ID of the remote (to BCDMA) end.
58           Valid ranges for thread ID depends on the data movement direction:
59           for source thread IDs (rx): 0 - 0x7fff
60           for destination thread IDs (tx): 0x8000 - 0xffff
62           Please refer to the device documentation for the PSI-L thread map and
63           also the PSI-L peripheral chapter for the correct thread ID.
75   msi-parent: true
77   power-domains:
86   ti,sci-rm-range-bchan:
87     $ref: /schemas/types.yaml#/definitions/uint32-array
89       Array of BCDMA block-copy channel resource subtypes for resource
97   ti,sci-rm-range-tchan:
98     $ref: /schemas/types.yaml#/definitions/uint32-array
108   ti,sci-rm-range-rchan:
109     $ref: /schemas/types.yaml#/definitions/uint32-array
120   - compatible
121   - "#dma-cells"
122   - reg
123   - reg-names
124   - msi-parent
125   - ti,sci
126   - ti,sci-dev-id
127   - ti,sci-rm-range-rchan
130   - $ref: /schemas/dma/dma-controller.yaml#
131   - $ref: /schemas/arm/keystone/ti,k3-sci-common.yaml#
133   - if:
137             const: ti,am62a-dmss-bcdma-csirx
140         ti,sci-rm-range-bchan: false
141         ti,sci-rm-range-tchan: false
146         reg-names:
148             - const: gcfg
149             - const: rchanrt
150             - const: ringrt
153         - power-domains
155   - if:
159             const: ti,am64-dmss-bcdma
165         reg-names:
167             - const: gcfg
168             - const: bchanrt
169             - const: rchanrt
170             - const: tchanrt
171             - const: ringrt
174         - ti,sci-rm-range-bchan
175         - ti,sci-rm-range-tchan
177   - if:
181             const: ti,j721s2-dmss-bcdma-csi
184         ti,sci-rm-range-bchan: false
189         reg-names:
191             - const: gcfg
192             - const: rchanrt
193             - const: tchanrt
194             - const: ringrt
197         - ti,sci-rm-range-tchan
202   - |+
204         #address-cells = <2>;
205         #size-cells = <2>;
208             compatible = "simple-mfd";
209             #address-cells = <2>;
210             #size-cells = <2>;
211             dma-ranges;
214             ti,sci-dev-id = <25>;
216             main_bcdma: dma-controller@485c0100 {
217                 compatible = "ti,am64-dmss-bcdma";
224                 reg-names = "gcfg", "bchanrt", "rchanrt", "tchanrt", "ringrt";
225                 msi-parent = <&inta_main_dmss>;
226                 #dma-cells = <3>;
228                 ti,sci = <&dmsc>;
229                 ti,sci-dev-id = <26>;
231                 ti,sci-rm-range-bchan = <0x20>; /* BLOCK_COPY_CHAN */
232                 ti,sci-rm-range-rchan = <0x21>; /* SPLIT_TR_RX_CHAN */
233                 ti,sci-rm-range-tchan = <0x22>; /* SPLIT_TR_TX_CHAN */