Difference between revisions of "DESK-MX6-L/Pheripherals/SD"
m (U0009 moved page AXEL Lite SOM/DESK-MX6-L/Pheripherals/SD to DESK-MX6-L/Pheripherals/SD: modifica gestione DESK come prodotto a se stante) |
(SD card section update for DESK-MX6-L release) |
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| − | <section begin=History/> | + | <section begin="History" /> |
{| style="border-collapse:collapse; " | {| style="border-collapse:collapse; " | ||
| − | !colspan="4" style="width:100%; text-align:left"; border-bottom:solid 2px #ededed"|History | + | ! colspan="4" style="width:100%; text-align:left" ; border-bottom:solid 2px #ededed" |History |
|- | |- | ||
| − | !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"|Version | + | ! 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" |Version |
| − | !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"|Issue Date | + | ! 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" |Issue Date |
| − | !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"|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" |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"|Oct 2020 | + | | 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" |Oct 2020 |
| − | |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 |
| + | |- | ||
| + | | 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" |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" |3.0.0 DESK release | ||
|- | |- | ||
|- | |- | ||
|} | |} | ||
| − | <section end=History/> | + | <section end="History" /> |
| − | <section begin=Body/> | + | <section begin="Body" /> |
==Peripheral SD== | ==Peripheral SD== | ||
| Line 70: | Line 74: | ||
... | ... | ||
... | ... | ||
| − | [ | + | [ 4.924153] sdhci: Secure Digital Host Controller Interface driver |
| − | [ | + | [ 4.930341] sdhci: Copyright(c) Pierre Ossman |
| − | [ | + | [ 4.934725] sdhci-pltfm: SDHCI platform and OF driver helper |
| − | [ | + | [ 4.984306] mmc0: SDHCI controller on 2190000.mmc [2190000.mmc] using ADMA |
| − | + | [ 5.043100] mmc0: host does not support reading read-only switch, assuming write-enable | |
| − | [ | + | [ 5.061091] mmc0: new high speed SDHC card at address aaaa |
| − | [ | + | [ 5.067483] mmcblk0: mmc0:aaaa SC16G 14.8 GiB |
| − | [ | + | [ 5.081303] mmcblk0: p1 p2 |
| − | [ | + | ... |
| − | [ | + | ... |
| + | [ 6.298807] EXT4-fs (mmcblk0p2): recovery complete | ||
| + | [ 6.311113] EXT4-fs (mmcblk0p2): mounted filesystem with ordered data mode. Opts: (null) | ||
... | ... | ||
... | ... | ||
| − | |||
| − | |||
</pre> | </pre> | ||
Revision as of 15:25, 27 February 2022
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| History | |||
|---|---|---|---|
| Version | Issue Date | Notes | |
| 1.0.0 | Oct 2020 | First DESK release | |
| 3.0.0 | Feb 2022 | 3.0.0 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 AXELLite SOM:
From imx6qdl-sbcx-revb-common.dtsi:
&usdhc1 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_usdhc1_sbcx>;
no-1-8-v;
keep-power-in-suspend;
enable-sdio-wakeup;
cd-gpios = <&gpio3 19 GPIO_ACTIVE_LOW>; /* GPIO3_19 */
status = "okay";
};
...
...
&iomuxc {
...
...
usdhc1 {
pinctrl_usdhc1_sbcx: usdhc1grp-1{
fsl,pins = <
MX6QDL_PAD_SD1_CMD__SD1_CMD 0x17060
MX6QDL_PAD_SD1_CLK__SD1_CLK 0x10060
MX6QDL_PAD_SD1_DAT0__SD1_DATA0 0x17060
MX6QDL_PAD_SD1_DAT1__SD1_DATA1 0x17060
MX6QDL_PAD_SD1_DAT2__SD1_DATA2 0x17060
MX6QDL_PAD_SD1_DAT3__SD1_DATA3 0x17060
/* card detect */
MX6QDL_PAD_EIM_D19__GPIO3_IO19 0x1b0b0
>;
};
};
...
...
};
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.:
... ... [ 4.924153] sdhci: Secure Digital Host Controller Interface driver [ 4.930341] sdhci: Copyright(c) Pierre Ossman [ 4.934725] sdhci-pltfm: SDHCI platform and OF driver helper [ 4.984306] mmc0: SDHCI controller on 2190000.mmc [2190000.mmc] using ADMA [ 5.043100] mmc0: host does not support reading read-only switch, assuming write-enable [ 5.061091] mmc0: new high speed SDHC card at address aaaa [ 5.067483] mmcblk0: mmc0:aaaa SC16G 14.8 GiB [ 5.081303] mmcblk0: p1 p2 ... ... [ 6.298807] EXT4-fs (mmcblk0p2): recovery complete [ 6.311113] EXT4-fs (mmcblk0p2): mounted filesystem with ordered data mode. Opts: (null) ... ...
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-mx6:~# mkdir -p /mnt/boot root@desk-mx6:~# mkdir -p /mnt/rfs root@desk-mx6:~# mount /dev/mmcblk0p1 /mnt/boot root@desk-mx6:~# mount /dev/mmcblk0p2 /mnt/rfs root@desk-mx6:~#
and then the mounted partition are available on the /mnt/boot and /mnt/rfs root file system directories.
