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drivers: sdio: Support SDIO driver for STM32. #89776

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Merged
merged 4 commits into from
Jul 30, 2025
Merged

drivers: sdio: Support SDIO driver for STM32. #89776

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56b1c95
drivers: sdhc: Support SDHC SDIO driver for STM32
ExaltZephyr Apr 29, 2025
3735bf4
dts: Add SDHC SDIO configuration for STM32
ExaltZephyr May 11, 2025
7515cfc
boards: Enable SDHC SDIO support
ExaltZephyr Jun 22, 2025
3684849
tests: sdio: Add write test to SDIO subsystem
ExaltZephyr May 19, 2025
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27 changes: 27 additions & 0 deletions boards/arduino/giga_r1/arduino_giga_r1.dtsi
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Original file line number Diff line number Diff line change
Expand Up @@ -8,6 +8,10 @@
#include <zephyr/dt-bindings/input/input-event-codes.h>

/ {
aliases {
sdhc0 = &sdhc;
};

leds {
compatible = "gpio-leds";
red_led: led_0 {
Expand Down Expand Up @@ -42,3 +46,26 @@
&mailbox {
status = "okay";
};

sdhc: &sdmmc1 {
compatible = "st,stm32-sdio";
interrupts = <49 0>;
interrupt-names = "event";
pinctrl-0 = <&sdmmc1_d0_pc8 &sdmmc1_d1_pc9
&sdmmc1_d2_pc10 &sdmmc1_d3_pc11
&sdmmc1_ck_pc12 &sdmmc1_cmd_pd2>;
pinctrl-names = "default";
sdhi-on-gpios = <&gpiob 10 GPIO_ACTIVE_HIGH>;
min-bus-freq = <DT_FREQ_K(400)>;
max-bus-freq = <DT_FREQ_M(208)>;
hw-flow-control;
bus-width = <4>;
status = "okay";

wifi: airoc-wifi {
status = "okay";
compatible = "infineon,airoc-wifi";
wifi-reg-on-gpios = <&gpiob 10 GPIO_ACTIVE_HIGH>;
wifi-host-wake-gpios = <&gpioi 8 GPIO_ACTIVE_HIGH>;
};
};
27 changes: 27 additions & 0 deletions boards/arduino/nicla_vision/arduino_nicla_vision.dtsi
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Expand Up @@ -5,6 +5,10 @@
*/

/ {
aliases {
sdhc0 = &sdhc;
};

leds {
compatible = "gpio-leds";
red_led: led_0 {
Expand All @@ -31,3 +35,26 @@
&mailbox {
status = "okay";
};

sdhc: &sdmmc2 {
compatible = "st,stm32-sdio";
interrupts = <124 0>;
interrupt-names = "event";
pinctrl-0 = <&sdmmc2_d0_pb14 &sdmmc2_d1_pb15
&sdmmc2_d2_pg11 &sdmmc2_d3_pb4
&sdmmc2_ck_pd6 &sdmmc2_cmd_pd7>;
pinctrl-names = "default";
sdhi-on-gpios = <&gpiog 4 GPIO_ACTIVE_HIGH>;
min-bus-freq = <DT_FREQ_K(400)>;
max-bus-freq = <DT_FREQ_M(208)>;
hw-flow-control;
bus-width = <4>;
status = "okay";

wifi: airoc-wifi {
status = "okay";
compatible = "infineon,airoc-wifi";
wifi-reg-on-gpios = <&gpiog 4 GPIO_ACTIVE_HIGH>;
wifi-host-wake-gpios = <&gpiod 15 GPIO_ACTIVE_HIGH>;
};
};
24 changes: 24 additions & 0 deletions boards/arduino/portenta_h7/arduino_portenta_h7-common.dtsi
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Expand Up @@ -30,6 +30,7 @@
led0 = &red_led;
led1 = &green_led;
led2 = &blue_led;
sdhc0 = &sdhc;
};
};

Expand Down Expand Up @@ -239,6 +240,29 @@ zephyr_i2c: &i2c1 {
};
};

sdhc: &sdmmc1 {
compatible = "st,stm32-sdio";
pinctrl-0 = <&sdmmc1_d0_pc8 &sdmmc1_d1_pc9
&sdmmc1_d2_pc10 &sdmmc1_d3_pc11
&sdmmc1_ck_pc12 &sdmmc1_cmd_pd2>;
pinctrl-names = "default";
sdhi-on-gpios = <&gpioj 1 GPIO_ACTIVE_HIGH>;
interrupts = <49 0>;
interrupt-names = "event";
min-bus-freq = <DT_FREQ_K(400)>;
max-bus-freq = <DT_FREQ_M(208)>;
hw-flow-control;
bus-width = <4>;
status = "okay";

wifi: airoc-wifi {
status = "okay";
compatible = "infineon,airoc-wifi";
wifi-reg-on-gpios = <&gpioj 1 GPIO_ACTIVE_HIGH>;
wifi-host-wake-gpios = <&gpioj 5 GPIO_ACTIVE_HIGH>;
};
};

zephyr_udc0: &usbotg_hs {
pinctrl-0 = < &usb_otg_hs_ulpi_d0_pa3
&usb_otg_hs_ulpi_ck_pa5
Expand Down
1 change: 1 addition & 0 deletions drivers/sdhc/CMakeLists.txt
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Expand Up @@ -16,4 +16,5 @@ zephyr_library_sources_ifdef(CONFIG_SDHC_RENESAS_RA sdhc_renesas_ra.c)
zephyr_library_sources_ifdef(CONFIG_SDHC_MAX32 sdhc_max32.c)
zephyr_library_sources_ifdef(CONFIG_SDHC_AMBIQ sdhc_ambiq.c)
zephyr_library_sources_ifdef(CONFIG_XLNX_SDHC xlnx_sdhc.c)
zephyr_library_sources_ifdef(CONFIG_SDHC_STM32_SDIO sdhc_stm32.c)
endif()
1 change: 1 addition & 0 deletions drivers/sdhc/Kconfig
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Expand Up @@ -21,6 +21,7 @@ source "drivers/sdhc/Kconfig.renesas_ra"
source "drivers/sdhc/Kconfig.max32"
source "drivers/sdhc/Kconfig.ambiq"
source "drivers/sdhc/Kconfig.xlnx"
source "drivers/sdhc/Kconfig.stm32"

config SDHC_INIT_PRIORITY
int "SDHC driver init priority"
Expand Down
21 changes: 21 additions & 0 deletions drivers/sdhc/Kconfig.stm32
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@@ -0,0 +1,21 @@
# Copyright (c) 2025 EXALT Technologies.
# SPDX-License-Identifier: Apache-2.0

config SDHC_STM32_SDIO
bool "STM32 SDMMC driver support for SDIO"
depends on DT_HAS_ST_STM32_SDIO_ENABLED
select USE_STM32_HAL_SDIO
select USE_STM32_LL_SDMMC
select SDHC_SUPPORTS_NATIVE_MODE
imply CACHE_MANAGEMENT if !SDHC_STM32_POLLING_SUPPORT && DCACHE
default y
help
Enable support for SDMMC on STM32 platforms for SDIO devices.

config SDHC_BUFFER_ALIGNMENT
default 32

config SDHC_STM32_POLLING_SUPPORT
bool "STM32 SDHC Polling driver support"
help
Enables support for SDHC Polling mode on STM32 microcontrollers.
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