| # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) |
| %YAML 1.2 |
| --- |
| $id: http://devicetree.org/schemas/sound/st,stm32-i2s.yaml# |
| $schema: http://devicetree.org/meta-schemas/core.yaml# |
| |
| title: STMicroelectronics STM32 SPI/I2S Controller |
| |
| maintainers: |
| - Olivier Moysan <olivier.moysan@st.com> |
| |
| description: |
| The SPI/I2S block supports I2S/PCM protocols when configured on I2S mode. |
| Only some SPI instances support I2S. |
| |
| properties: |
| compatible: |
| enum: |
| - st,stm32h7-i2s |
| |
| "#sound-dai-cells": |
| const: 0 |
| |
| reg: |
| maxItems: 1 |
| |
| clocks: |
| items: |
| - description: clock feeding the peripheral bus interface. |
| - description: clock feeding the internal clock generator. |
| - description: I2S parent clock for sampling rates multiple of 8kHz. |
| - description: I2S parent clock for sampling rates multiple of 11.025kHz. |
| |
| clock-names: |
| items: |
| - const: pclk |
| - const: i2sclk |
| - const: x8k |
| - const: x11k |
| |
| interrupts: |
| maxItems: 1 |
| |
| dmas: |
| items: |
| - description: audio capture DMA. |
| - description: audio playback DMA. |
| |
| dma-names: |
| items: |
| - const: rx |
| - const: tx |
| |
| resets: |
| maxItems: 1 |
| |
| required: |
| - compatible |
| - "#sound-dai-cells" |
| - reg |
| - clocks |
| - clock-names |
| - interrupts |
| - dmas |
| - dma-names |
| |
| additionalProperties: false |
| |
| examples: |
| - | |
| #include <dt-bindings/interrupt-controller/arm-gic.h> |
| #include <dt-bindings/clock/stm32mp1-clks.h> |
| i2s2: audio-controller@4000b000 { |
| compatible = "st,stm32h7-i2s"; |
| #sound-dai-cells = <0>; |
| reg = <0x4000b000 0x400>; |
| clocks = <&rcc SPI2>, <&rcc SPI2_K>, <&rcc PLL3_Q>, <&rcc PLL3_R>; |
| clock-names = "pclk", "i2sclk", "x8k", "x11k"; |
| interrupts = <GIC_SPI 35 IRQ_TYPE_LEVEL_HIGH>; |
| dmas = <&dmamux1 39 0x400 0x01>, |
| <&dmamux1 40 0x400 0x01>; |
| dma-names = "rx", "tx"; |
| pinctrl-names = "default"; |
| pinctrl-0 = <&i2s2_pins_a>; |
| }; |
| |
| ... |
