ASoC: dt-bindings: davinci-mcasp: convert McASP bindings to yaml schema
Convert the bindings for McASP controllers for TI SoCs from txt to YAML schema. Adds additional properties 'clocks', 'clock-names', 'power-domains', '#sound-dai-cells' and 'port' which were missing from the txt file. Removes properties 'sram-size-playback' and 'sram-size-capture' since they are not used. Adds 'dmas' and 'dma-names' in the example which were missing from the txt file. Changes 'interrupts' and 'interrupt-names' from optional to required properties. Changes 'op-modes', 'serial-dir' to optional properties as they are not needed if the McASP is used only as GPIO. Changes 'tdm-slots' to required property only for I2S operation mode. Adds the yaml file in the 'MAINTAINERS' under the heading 'TEXAS INSTRUMENTS ASoC DRIVERS' Signed-off-by: Jayesh Choudhary <j-choudhary@ti.com> Reviewed-by: Rob Herring <robh@kernel.org> Acked-by: Peter Ujfalusi <peter.ujfalusi@gmail.com> Link: https://lore.kernel.org/r/20220209063008.2928-1-j-choudhary@ti.com Signed-off-by: Mark Brown <broonie@kernel.org>
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Jayesh Choudhary
Mark Brown
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8be90641a0
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@ -1,86 +0,0 @@
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Texas Instruments McASP controller
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Required properties:
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- compatible :
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"ti,dm646x-mcasp-audio" : for DM646x platforms
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"ti,da830-mcasp-audio" : for both DA830 & DA850 platforms
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"ti,am33xx-mcasp-audio" : for AM33xx platforms (AM33xx, AM43xx, TI81xx)
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"ti,dra7-mcasp-audio" : for DRA7xx platforms
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"ti,omap4-mcasp-audio" : for OMAP4
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- reg : Should contain reg specifiers for the entries in the reg-names property.
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- reg-names : Should contain:
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* "mpu" for the main registers (required). For compatibility with
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existing software, it is recommended this is the first entry.
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* "dat" for separate data port register access (optional).
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- op-mode : I2S/DIT ops mode. 0 for I2S mode. 1 for DIT mode used for S/PDIF,
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IEC60958-1, and AES-3 formats.
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- tdm-slots : Slots for TDM operation. Indicates number of channels transmitted
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or received over one serializer.
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- serial-dir : A list of serializer configuration. Each entry is a number
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indication for serializer pin direction.
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(0 - INACTIVE, 1 - TX, 2 - RX)
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- dmas: two element list of DMA controller phandles and DMA request line
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ordered pairs.
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- dma-names: identifier string for each DMA request line in the dmas property.
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These strings correspond 1:1 with the ordered pairs in dmas. The dma
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identifiers must be "rx" and "tx".
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Optional properties:
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- ti,hwmods : Must be "mcasp<n>", n is controller instance starting 0
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- tx-num-evt : FIFO levels.
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- rx-num-evt : FIFO levels.
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- dismod : Specify the drive on TX pin during inactive slots
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0 : 3-state
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2 : logic low
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3 : logic high
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Defaults to 'logic low' when the property is not present
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- sram-size-playback : size of sram to be allocated during playback
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- sram-size-capture : size of sram to be allocated during capture
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- interrupts : Interrupt numbers for McASP
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- interrupt-names : Known interrupt names are "tx" and "rx"
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- pinctrl-0: Should specify pin control group used for this controller.
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- pinctrl-names: Should contain only one value - "default", for more details
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please refer to pinctrl-bindings.txt
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- fck_parent : Should contain a valid clock name which will be used as parent
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for the McASP fck
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- auxclk-fs-ratio: When McASP is bus master indicates the ratio between AUCLK
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and FS rate if applicable:
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AUCLK rate = auxclk-fs-ratio * FS rate
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Optional GPIO support:
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If any McASP pin need to be used as GPIO then the McASP node must have:
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...
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gpio-controller
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#gpio-cells = <2>;
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...
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When requesting a GPIO, the first parameter is the PIN index in McASP_P*
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registers.
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For example to request the AXR2 pin of mcasp8:
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function-gpios = <&mcasp8 2 0>;
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Or to request the ACLKR pin of mcasp8:
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function-gpios = <&mcasp8 29 0>;
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For generic gpio information, please refer to bindings/gpio/gpio.txt
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Example:
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mcasp0: mcasp0@1d00000 {
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compatible = "ti,da830-mcasp-audio";
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reg = <0x100000 0x3000>;
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reg-names "mpu";
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interrupts = <82>, <83>;
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interrupt-names = "tx", "rx";
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op-mode = <0>; /* MCASP_IIS_MODE */
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tdm-slots = <2>;
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serial-dir = <
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0 0 0 0 /* 0: INACTIVE, 1: TX, 2: RX */
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0 0 0 0
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0 0 0 1
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2 0 0 0 >;
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tx-num-evt = <1>;
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rx-num-evt = <1>;
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};
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@ -0,0 +1,201 @@
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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/sound/davinci-mcasp-audio.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: McASP Controller for TI SoCs
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maintainers:
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- Jayesh Choudhary <j-choudhary@ti.com>
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properties:
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compatible:
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enum:
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- ti,dm646x-mcasp-audio
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- ti,da830-mcasp-audio
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- ti,am33xx-mcasp-audio
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- ti,dra7-mcasp-audio
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- ti,omap4-mcasp-audio
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reg:
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minItems: 1
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items:
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- description: CFG registers
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- description: data registers
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reg-names:
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minItems: 1
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items:
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- const: mpu
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- const: dat
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op-mode:
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$ref: /schemas/types.yaml#/definitions/uint32
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description: 0 - I2S or 1 - DIT operation mode
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enum:
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- 0
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- 1
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tdm-slots:
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$ref: /schemas/types.yaml#/definitions/uint32
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description:
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number of channels over one serializer
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the property is ignored in DIT mode
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minimum: 2
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maximum: 32
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serial-dir:
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description:
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A list of serializer configuration
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Entry is indication for serializer pin direction
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0 - Inactive, 1 - TX, 2 - RX
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All AXR pins should be present in the array even if inactive
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$ref: /schemas/types.yaml#/definitions/uint32-array
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minItems: 1
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maxItems: 25
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items:
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minimum: 0
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maximum: 2
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dmas:
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minItems: 1
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items:
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- description: transmission DMA channel
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- description: reception DMA channel
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dma-names:
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minItems: 1
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items:
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- const: tx
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- const: rx
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ti,hwmods:
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$ref: /schemas/types.yaml#/definitions/string
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description: Name of hwmod associated with McASP
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maxItems: 1
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deprecated: true
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tx-num-evt:
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$ref: /schemas/types.yaml#/definitions/uint32
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description:
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configures WFIFO threshold
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0 disables the FIFO use
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if property is missing, then also FIFO use is disabled
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rx-num-evt:
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$ref: /schemas/types.yaml#/definitions/uint32
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description:
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configures RFIFO threshold
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0 disables the FIFO use
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if property is missing, then also FIFO use is disabled
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dismod:
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$ref: /schemas/types.yaml#/definitions/uint32
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description:
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specify the drive on TX pin during inactive time slots
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0 - 3-state, 2 - logic low, 3 - logic high
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enum:
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- 0
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- 2
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- 3
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default: 2
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interrupts:
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anyOf:
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- minItems: 1
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items:
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- description: TX interrupt
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- description: RX interrupt
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- items:
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- description: common/combined interrupt
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interrupt-names:
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oneOf:
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- minItems: 1
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items:
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- const: tx
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- const: rx
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- const: common
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fck_parent:
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$ref: /schemas/types.yaml#/definitions/string
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description: parent clock name for McASP fck
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maxItems: 1
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auxclk-fs-ratio:
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$ref: /schemas/types.yaml#/definitions/uint32
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description: ratio of AUCLK and FS rate if applicable
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gpio-controller: true
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"#gpio-cells":
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const: 2
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clocks:
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minItems: 1
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items:
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- description: functional clock
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- description: module specific optional ahclkx clock
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- description: module specific optional ahclkr clock
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clock-names:
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minItems: 1
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items:
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- const: fck
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- const: ahclkx
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- const: ahclkr
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power-domains:
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description: phandle to the corresponding power-domain
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maxItems: 1
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"#sound-dai-cells":
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const: 0
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port:
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description: connection for when McASP is used via graph card
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type: object
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required:
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- compatible
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- reg
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- reg-names
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- dmas
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- dma-names
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- interrupts
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- interrupt-names
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allOf:
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- if:
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properties:
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opmode:
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enum:
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- 0
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then:
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required:
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- tdm-slots
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additionalProperties: false
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examples:
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- |
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mcasp0: mcasp0@1d00000 {
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compatible = "ti,da830-mcasp-audio";
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reg = <0x100000 0x3000>;
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reg-names = "mpu";
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interrupts = <82>, <83>;
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interrupt-names = "tx", "rx";
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op-mode = <0>; /* MCASP_IIS_MODE */
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tdm-slots = <2>;
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dmas = <&main_udmap 0xc400>, <&main_udmap 0x4400>;
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dma-names = "tx", "rx";
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serial-dir = <
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0 0 0 0 /* 0: INACTIVE, 1: TX, 2: RX */
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0 0 0 0
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0 0 0 1
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2 0 0 0 >;
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tx-num-evt = <1>;
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rx-num-evt = <1>;
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};
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@ -19042,6 +19042,7 @@ TEXAS INSTRUMENTS ASoC DRIVERS
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M: Peter Ujfalusi <peter.ujfalusi@gmail.com>
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L: alsa-devel@alsa-project.org (moderated for non-subscribers)
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S: Maintained
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F: Documentation/devicetree/bindings/sound/davinci-mcasp-audio.yaml
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F: sound/soc/ti/
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TEXAS INSTRUMENTS' DAC7612 DAC DRIVER
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