On Mon, Jun 06, 2022 at 09:19:06PM +0200, Martin Povišer wrote: > Add binding schema for MCA I2S transceiver found on Apple M1 and other > chips. > > Signed-off-by: Martin Povišer <povik+lin@xxxxxxxxxxx> > --- > .../devicetree/bindings/sound/apple,mca.yaml | 102 ++++++++++++++++++ > 1 file changed, 102 insertions(+) > create mode 100644 Documentation/devicetree/bindings/sound/apple,mca.yaml > > diff --git a/Documentation/devicetree/bindings/sound/apple,mca.yaml b/Documentation/devicetree/bindings/sound/apple,mca.yaml > new file mode 100644 > index 000000000000..c8a36d8c38ad > --- /dev/null > +++ b/Documentation/devicetree/bindings/sound/apple,mca.yaml > @@ -0,0 +1,102 @@ > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/sound/apple,mca.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: Apple MCA I2S transceiver > + > +description: | > + MCA is an I2S transceiver peripheral found on M1 and other Apple chips. It is > + composed of a number of identical clusters which can operate independently > + or in an interlinked fashion. Up to 6 clusters have been seen on an MCA. > + > +maintainers: > + - Martin Povišer <povik+lin@xxxxxxxxxxx> > + > +properties: > + compatible: > + items: > + - enum: > + - apple,t8103-mca > + - apple,t6000-mca > + - const: apple,mca > + > + reg: > + minItems: 2 > + maxItems: 2 Need to define what each entry is. > + > + interrupts: > + maxItems: 6 > + description: | > + One interrupt per each cluster > + > + "#address-cells": > + const: 1 > + > + "#size-cells": > + const: 0 > + > + dmas: > + minItems: 16 > + maxItems: 24 > + description: | > + DMA channels associated to the SERDES units within the peripheral. They > + are listed in groups of four per cluster, and within the cluster they are > + given in order TXA, RXA, TXB, RXB of the respective SERDES units. > + > + dma-names: > + minItems: 16 > + maxItems: 24 > + description: | > + Names for the DMA channels: 'tx'/'rx', then cluster number, then 'a'/'b' > + based on the associated SERDES unit. Express as a schema: items: pattern: '^(tx|rx)[0-5][ab]$' > + > + clocks: > + minItems: 4 > + maxItems: 6 > + description: | > + Clusters' input reference clock. > + > + power-domains: > + minItems: 5 > + maxItems: 7 > + description: | > + First the overall power domain for register access, then the power > + domains of individual clusters for their operation. > + > + "#sound-dai-cells": > + const: 1 > + > +required: > + - compatible > + - reg > + - dmas > + - dma-names > + - clocks > + - power-domains > + - '#sound-dai-cells' > + > +additionalProperties: false > + > +examples: > + - | > + mca: mca@9b600000 { > + compatible = "apple,t6000-mca", "apple,mca"; > + reg = <0x9b600000 0x10000>, > + <0x9b500000 0x20000>; > + > + clocks = <&nco 0>, <&nco 1>, <&nco 2>, <&nco 3>; > + power-domains = <&ps_audio_p>, <&ps_mca0>, <&ps_mca1>, > + <&ps_mca2>, <&ps_mca3>; > + dmas = <&admac 0>, <&admac 1>, <&admac 2>, <&admac 3>, > + <&admac 4>, <&admac 5>, <&admac 6>, <&admac 7>, > + <&admac 8>, <&admac 9>, <&admac 10>, <&admac 11>, > + <&admac 12>, <&admac 13>, <&admac 14>, <&admac 15>; > + dma-names = "tx0a", "rx0a", "tx0b", "rx0b", > + "tx1a", "rx1a", "tx1b", "rx1b", > + "tx2a", "rx2a", "tx2b", "rx2b", > + "tx3a", "rx3a", "tx3b", "rx3b"; > + > + #sound-dai-cells = <1>; > + }; > -- > 2.33.0 > >
