On 18/03/2024 07:38, Inochi Amaoto wrote: > The DMA IP of Sophgo CV18XX/SG200X is based on a DW AXI CORE, with > an additional channel remap register located in the top system control > area. The DMA channel is exclusive to each core. > > Add the dmamux binding for CV18XX/SG200X series SoC > > Signed-off-by: Inochi Amaoto <inochiama@xxxxxxxxxxx> > Reviewed-by: Rob Herring <robh@xxxxxxxxxx> > --- > .../bindings/dma/sophgo,cv1800-dmamux.yaml | 47 ++++++++++++++++ > include/dt-bindings/dma/cv1800-dma.h | 55 +++++++++++++++++++ > 2 files changed, 102 insertions(+) > create mode 100644 Documentation/devicetree/bindings/dma/sophgo,cv1800-dmamux.yaml > create mode 100644 include/dt-bindings/dma/cv1800-dma.h > > diff --git a/Documentation/devicetree/bindings/dma/sophgo,cv1800-dmamux.yaml b/Documentation/devicetree/bindings/dma/sophgo,cv1800-dmamux.yaml > new file mode 100644 > index 000000000000..c813c66737ba > --- /dev/null > +++ b/Documentation/devicetree/bindings/dma/sophgo,cv1800-dmamux.yaml > @@ -0,0 +1,47 @@ > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/dma/sophgo,cv1800-dmamux.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: Sophgo CV1800/SG200 Series DMA mux > + > +maintainers: > + - Inochi Amaoto <inochiama@xxxxxxxxxxx> > + > +allOf: > + - $ref: dma-router.yaml# > + > +properties: > + compatible: > + const: sophgo,cv1800-dmamux > + > + reg: > + maxItems: 2 You need to describe the items. > + > + '#dma-cells': > + const: 3 > + description: > + The first cells is DMA channel. The second one is device id. > + The third one is the cpu id. > + > + dma-masters: > + maxItems: 1 > + > + dma-requests: > + const: 8 > + > +required: > + - '#dma-cells' reg is not required? How do you perform any IO? > + - dma-masters > + Best regards, Krzysztof
