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drivers: i2s: add sai support for stm32h5xx #91555

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Merged
merged 1 commit into from
Jul 19, 2025
Merged

drivers: i2s: add sai support for stm32h5xx #91555

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2 changes: 1 addition & 1 deletion drivers/i2s/Kconfig.stm32
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Original file line number Diff line number Diff line change
Expand Up @@ -36,7 +36,7 @@ menuconfig I2S_STM32_SAI
select USE_STM32_HAL_DMA_EX
select USE_STM32_HAL_SAI
help
Enable SAI support on the STM32U5 family of processors.
Enable SAI support on the STM32 family of processors.

if I2S_STM32_SAI

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22 changes: 22 additions & 0 deletions dts/arm/st/h5/stm32h5.dtsi
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Expand Up @@ -633,6 +633,28 @@
status = "disabled";
};

sai1_a: sai1@40015404 {
compatible = "st,stm32-sai";
#address-cells = <1>;
#size-cells = <0>;
reg = <0x40015404 0x20>;
clocks = <&rcc STM32_CLOCK(APB2, 21)>,
<&rcc STM32_SRC_PLL2_P SAI1_SEL(0)>;
dmas = <&gpdma1 1 53 0>;
status = "disabled";
};

sai1_b: sai1@40015424 {
compatible = "st,stm32-sai";
#address-cells = <1>;
#size-cells = <0>;
reg = <0x40015424 0x20>;
clocks = <&rcc STM32_CLOCK(APB2, 21)>,
<&rcc STM32_SRC_PLL2_P SAI1_SEL(0)>;
dmas = <&gpdma1 0 54 0>;
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Please use defines instead of magic numbers.

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Hi @erwango,
I have used 0 here because the DMA defines are not used at all in the driver. It will have no effect configuring the DMA.

I will open another PR after merging H5xx to address this.

status = "disabled";
};

usb: usb@40016000 {
compatible = "st,stm32-usb";
reg = <0x40016000 0x400>;
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1 change: 1 addition & 0 deletions samples/drivers/i2s/output/boards/nucleo_h563zi.conf
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@@ -0,0 +1 @@
CONFIG_HEAP_MEM_POOL_SIZE=4192
33 changes: 33 additions & 0 deletions samples/drivers/i2s/output/boards/nucleo_h563zi.overlay
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@@ -0,0 +1,33 @@
/*
* Copyright (c) 2025 ZAL Zentrum für Angewandte Luftfahrtforschung GmbH
* Copyright (c) 2025 Mario Paja
*
* SPDX-License-Identifier: Apache-2.0
*/

/ {
aliases {
i2s-tx = &sai1_a;
};
};

&pll2 {
/* 44.1KHz (0.09% Error) */
div-m = <2>;
mul-n = <113>;
div-q = <2>;
div-r = <2>;
div-p = <2>;
clocks = <&clk_hse>;
status = "okay";
};

&sai1_a {
pinctrl-0 = <&sai1_mclk_a_pe2 &sai1_sd_a_pe6
&sai1_fs_a_pe4 &sai1_sck_a_pe5>;
pinctrl-names = "default";
status = "okay";
mclk-enable;
mclk-divider = "div-256";
dma-names = "tx";
};