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/linux-5.10/Documentation/devicetree/bindings/sound/
Dst,stm32-i2s.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/sound/st,stm32-i2s.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: STMicroelectronics STM32 SPI/I2S Controller
10 - Olivier Moysan <olivier.moysan@st.com>
13 The SPI/I2S block supports I2S/PCM protocols when configured on I2S mode.
14 Only some SPI instances support I2S.
19 - st,stm32h7-i2s
21 "#sound-dai-cells":
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Dst,stm32-sai.txt4 as I2S standards, LSB or MSB-justified, PCM/DSP, TDM, and AC'97.
5 The SAI contains two independent audio sub-blocks. Each sub-block has
9 - compatible: Should be "st,stm32f4-sai" or "st,stm32h7-sai"
10 - reg: Base address and size of SAI common register set.
11 - clocks: Must contain phandle and clock specifier pairs for each entry
12 in clock-names.
13 - clock-names: Must contain "pclk" "x8k" and "x11k"
15 Mandatory for "st,stm32h7-sai" compatible.
16 Not used for "st,stm32f4-sai" compatible.
19 - interrupts: cpu DAI interrupt line shared by SAI sub-blocks
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/linux-5.10/arch/arm/boot/dts/
Dstm32mp151.dtsi1 // SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
3 * Copyright (C) STMicroelectronics 2017 - All Rights Reserved
6 #include <dt-bindings/interrupt-controller/arm-gic.h>
7 #include <dt-bindings/clock/stm32mp1-clks.h>
8 #include <dt-bindings/reset/stm32mp1-resets.h>
11 #address-cells = <1>;
12 #size-cells = <1>;
15 #address-cells = <1>;
16 #size-cells = <0>;
19 compatible = "arm,cortex-a7";
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/linux-5.10/Documentation/devicetree/bindings/clock/
Dst,stm32h7-rcc.txt1 STMicroelectronics STM32H7 Reset and Clock Controller
6 Please refer to clock-bindings.txt for common clock controller binding usage.
10 - compatible: Should be:
11 "st,stm32h743-rcc"
13 - reg: should be register base and length as documented in the
16 - #reset-cells: 1, see below
18 - #clock-cells : from common clock binding; shall be set to 1
20 - clocks: External oscillator clock phandle
21 - high speed external clock signal (HSE)
22 - low speed external clock signal (LSE)
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/linux-5.10/sound/soc/stm/
Dstm32_i2s.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * STM32 ALSA SoC Digital Audio Interface (I2S) driver.
5 * Copyright (C) 2017, STMicroelectronics - All Rights Reserved
134 #define I2S_CGFR_I2SDIV_MAX ((1 << (I2S_CGFR_I2SDIV_BIT_H -\
135 I2S_CGFR_I2SDIV_SHIFT)) - 1)
141 /* Registers below apply to I2S version 1.1 and more */
196 #define STM32_I2S_IS_MASTER(x) ((x)->ms_flg == I2S_MS_MASTER)
197 #define STM32_I2S_IS_SLAVE(x) ((x)->ms_flg == I2S_MS_SLAVE)
200 * struct stm32_i2s_data - private data of I2S
201 * @regmap_conf: I2S register map configuration pointer
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