drivers: disk: sdmmc_stm32: Fix bus width initialization sequence

[bricle]

Fix SDMMC initialization by starting with 1-bit bus mode and properly configuring wide bus operation after HAL
initialization.

The SDMMC protocol requires initialization to start in 1-bit mode before switching to wider bus widths.
Previously, the driver attempted to initialize directly with the target bus width, which could cause later read/write failures.

Changes:

• Initialize with SDMMC_BUS_WIDE_1B instead of target bus width
• Add HAL_SD_ConfigWideBusOperation() call after successful init
• Add error logging for wide bus configuration failures

Fixes potential SDMMC read/write failures issues on STM32 platforms.

before this change tested on stm32H743:

with zephyr/tests/drivers/disk/disk_access
dts:

&sdmmc1 {
	pinctrl-0 = <&sdmmc1_d0_pc8 &sdmmc1_d1_pc9
		     &sdmmc1_d2_pc10 &sdmmc1_d3_pc11
		     &sdmmc1_ck_pc12 &sdmmc1_cmd_pd2>;
	pinctrl-names = "default";
	clk-div = <6>;
	bus-width = <1>;
	cd-gpios = <&gpiod 4 (GPIO_ACTIVE_HIGH | GPIO_PULL_UP)>;
	disk-name = "SD";
	status = "okay";
};

with 1 line bus width ( bus-width = <1>)

------ TESTSUITE SUMMARY START ------

SUITE PASS - 100.00% [disk_driver]: pass = 2, fail = 0, skip = 0, total = 2 duration = 0.122 seconds
 - PASS - [disk_driver.test_read] duration = 0.041 seconds
 - PASS - [disk_driver.test_write] duration = 0.081 seconds

------ TESTSUITE SUMMARY END ------

===================================================================
PROJECT EXECUTION SUCCESSFUL

with 4 line bus width ( bus-width = <4>)

------ TESTSUITE SUMMARY START ------

SUITE FAIL -   0.00% [disk_driver]: pass = 0, fail = 2, skip = 0, total = 2 duration = 0.131 seconds
 - FAIL - [disk_driver.test_read] duration = 0.104 seconds
 - FAIL - [disk_driver.test_write] duration = 0.027 seconds

------ TESTSUITE SUMMARY END ------

===================================================================
PROJECT EXECUTION FAILED

after this change tested on stm32H743:

with 4 line bus width ( bus-width = <4>)

------ TESTSUITE SUMMARY START ------

SUITE PASS - 100.00% [disk_driver]: pass = 2, fail = 0, skip = 0, total = 2 duration = 0.122 seconds
 - PASS - [disk_driver.test_read] duration = 0.041 seconds
 - PASS - [disk_driver.test_write] duration = 0.081 seconds

------ TESTSUITE SUMMARY END ------

===================================================================
PROJECT EXECUTION SUCCESSFUL

[JarmouniA]

The change does not correspond to what's in the PR's description.
What's needed is to set

zephyr/drivers/disk/sdmmc_stm32.c

Line 890 in 5945a3f

.Init.BusWide = SDMMC_BUS_WIDTH,

to SDMMC_BUS_WIDE_1B by default, then, after HAL_SD_Init(), if SDMMC_BUS_WIDTH!=SDMMC_BUS_WIDE_1B, change it to SDMMC_BUS_WIDTH and call HAL_SD_ConfigWideBusOperation().

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[bricle]

The change does not correspond to what's in the PR's description. What's needed is to set

zephyr/drivers/disk/sdmmc_stm32.c

Line 890 in 5945a3f

.Init.BusWide = SDMMC_BUS_WIDTH,

to SDMMC_BUS_WIDE_1B by default, then, after HAL_SD_Init(), if SDMMC_BUS_WIDTH!=SDMMC_BUS_WIDE_1B, change it to SDMMC_BUS_WIDTH and call HAL_SD_ConfigWideBusOperation().

Sorry for the misleading, changed as suggested. Now it is explicitly initialized with SDMMC_BUS_WIDE_1B using HAL_SD_Init()