Difference between revisions of "DESK-MX6UL-L/Peripherals/SD"
m (Minor update for DESK MX6UL 4.0.0 rel) |
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! style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#73B2C7; padding:5px; color:white" |Notes | ! style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#73B2C7; padding:5px; color:white" |Notes | ||
|- | |- | ||
| − | | style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fb; padding:5px; color:#000000" | + | | style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fb; padding:5px; color:#000000" |1.0.0 |
| style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fb; padding:5px; color:#000000" |Apr 2021 | | style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fb; padding:5px; color:#000000" |Apr 2021 | ||
| style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fb; padding:5px; color:#000000" |First DESK release | | style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fb; padding:5px; color:#000000" |First DESK release | ||
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| style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fb; padding:5px; color:#000000" |2.0.0 | | style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fb; padding:5px; color:#000000" |2.0.0 | ||
| style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fb; padding:5px; color:#000000" |Feb 2022 | | style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fb; padding:5px; color:#000000" |Feb 2022 | ||
| − | | style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fb; padding:5px; color:#000000" |DESK 3.0.0 release | + | | style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fb; padding:5px; color:#000000" |3.0.0 DESK release |
| + | |- | ||
| + | | style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fb; padding:5px; color:#000000" |3.0.0 | ||
| + | | style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fb; padding:5px; color:#000000" |Apr 2023 | ||
| + | | style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fb; padding:5px; color:#000000" |4.0.0 DESK release | ||
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... | ... | ||
... | ... | ||
| − | [ | + | [ 2.394568] sdhci-esdhc-imx 2190000.mmc: Got CD GPIO |
| − | [ | + | [ 2.451067] mmc0: SDHCI controller on 2190000.mmc [2190000.mmc] using ADMA |
| − | [ | + | [ 2.501056] mmc0: host does not support reading read-only switch, assuming write-enable |
| − | [ | + | [ 2.512002] mmc0: new high speed SDHC card at address 5048 |
| − | [ | + | [ 2.521767] mmcblk0: mmc0:5048 SD32G 28.9 GiB |
| − | [ | + | [ 2.546074] mmcblk0: p1 p2 |
| − | [ | + | [ 3.055471] EXT4-fs (mmcblk0p2): mounting ext3 file system using the ext4 subsystem |
| − | [ | + | [ 3.139912] EXT4-fs (mmcblk0p2): recovery complete |
| + | [ 3.146027] EXT4-fs (mmcblk0p2): mounted filesystem with ordered data mode. Opts: (null). Quota mode: none. | ||
| + | [ 7.093243] EXT4-fs (mmcblk0p2): re-mounted. Opts: (null). Quota mode: none. | ||
... | ... | ||
... | ... | ||
| Line 91: | Line 97: | ||
root@desk-mx6ul-axelulite:~# mount /dev/mmcblk0p1 /mnt/boot/ | root@desk-mx6ul-axelulite:~# mount /dev/mmcblk0p1 /mnt/boot/ | ||
root@desk-mx6ul-axelulite:~# ls /mnt/boot/ | root@desk-mx6ul-axelulite:~# ls /mnt/boot/ | ||
| − | boot.scr | + | boot.scr desk-mx6ul-l-4.0.0_imx6ul-axelulite-cb003a.dtb desk-mx6ul-l-4.0.0_uImage splash_image.bmp |
</pre> | </pre> | ||
Revision as of 14:58, 3 April 2023
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| History | |||
|---|---|---|---|
| Version | Issue Date | Notes | |
| 1.0.0 | Apr 2021 | First DESK release | |
| 2.0.0 | Feb 2022 | 3.0.0 DESK release | |
| 3.0.0 | Apr 2023 | 4.0.0 DESK release | |
Contents
Peripheral SD[edit | edit source]
Device tree configuration[edit | edit source]
Here below an example of device tree configuration used on standard DAVE's kit for the AXEL ULite SOM:
From imx6ul-axelulite.dtsi:
&usdhc1 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_usdhc1>;
cd-gpios = <&gpio1 19 GPIO_ACTIVE_LOW>;
bus-width = <4>;
no-1-8-v;
keep-power-in-suspend;
enable-sdio-wakeup;
status = "okay";
};
...
...
&iomuxc {
...
...
pinctrl_usdhc1: usdhc1grp {
fsl,pins = <
MX6UL_PAD_SD1_CMD__USDHC1_CMD 0x17059
MX6UL_PAD_SD1_CLK__USDHC1_CLK 0x10071
MX6UL_PAD_SD1_DATA0__USDHC1_DATA0 0x17059
MX6UL_PAD_SD1_DATA1__USDHC1_DATA1 0x17059
MX6UL_PAD_SD1_DATA2__USDHC1_DATA2 0x17059
MX6UL_PAD_SD1_DATA3__USDHC1_DATA3 0x17059
MX6UL_PAD_UART1_RTS_B__GPIO1_IO19 0x17059 /* SD1 CD */
>;
};
...
...
};
The USDHC interface is re-configured on carrier device tree because of the Card Detect pin (which is related to the real board hardware implementation).
Accessing the peripheral[edit | edit source]
Once initialized, the SD device is mapped to the standard /dev/mmcblk0pX block device, depending on how many partition are created on the SD card.
Linux messages at boot time[edit | edit source]
If the microSd card is inserted at boot time, the kernel - once the USDHC interface has been initialized - prints the device information and the partition detected like p1, p2, etc.:
... ... [ 2.394568] sdhci-esdhc-imx 2190000.mmc: Got CD GPIO [ 2.451067] mmc0: SDHCI controller on 2190000.mmc [2190000.mmc] using ADMA [ 2.501056] mmc0: host does not support reading read-only switch, assuming write-enable [ 2.512002] mmc0: new high speed SDHC card at address 5048 [ 2.521767] mmcblk0: mmc0:5048 SD32G 28.9 GiB [ 2.546074] mmcblk0: p1 p2 [ 3.055471] EXT4-fs (mmcblk0p2): mounting ext3 file system using the ext4 subsystem [ 3.139912] EXT4-fs (mmcblk0p2): recovery complete [ 3.146027] EXT4-fs (mmcblk0p2): mounted filesystem with ordered data mode. Opts: (null). Quota mode: none. [ 7.093243] EXT4-fs (mmcblk0p2): re-mounted. Opts: (null). Quota mode: none. ... ...
Additional information[edit | edit source]
If the root file system configuration does not automatically mount the partition, it is possible to mount the device using the following command:
root@desk-mx6ul-axelulite:~# mkdir -p /mnt/boot root@desk-mx6ul-axelulite:~# mount /dev/mmcblk0p1 /mnt/boot/ root@desk-mx6ul-axelulite:~# ls /mnt/boot/ boot.scr desk-mx6ul-l-4.0.0_imx6ul-axelulite-cb003a.dtb desk-mx6ul-l-4.0.0_uImage splash_image.bmp
and then the mounted partition is available on the /mnt/boot root file system directory.
