The NXP i.MX6 CPU Quad and Dual variants include an integrated Serial Advanced Technology Attachment (SATA) controller that is compatible with the Advanced Host Controller Interface (AHCI) specification.
The ConnectCore 6 Plus SBC includes one SATA connector.
Kernel configuration
You can manage SATA driver support through the following kernel configuration option:
-
Serial ATA and Parallel ATA drivers (
CONFIG_SATA_AHCI_PLATFORM)
This option is enabled as built-in on the ConnectCore 6 Plus SBC kernel configuration file.
Kernel driver
The AHCI SATA platform driver is located at drivers/ata/ahci_imx.c.
Device tree bindings and customization
| File | Description |
|---|---|
AHCI platform device tree binding |
The device tree node for the AHCI SATA driver is defined in the common i.MX6 device tree:
sata: sata@2200000 {
compatible = "fsl,imx6q-ahci";
reg = <0x02200000 0x4000>;
interrupts = <0 39 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&clks IMX6QDL_CLK_SATA>,
<&clks IMX6QDL_CLK_SATA_REF_100M>,
<&clks IMX6QDL_CLK_AHB>;
clock-names = "sata", "sata_ref", "ahb";
status = "disabled";
};SATA is enabled on the ConnectCore 6 Plus SBC device tree:
&sata {
status = "okay";
};SATA user space usage
Serial ATA disks are detected by the kernel during the boot process and assigned a device node in the form sdx.
Partitions in the drive appear as nodes in the form sdxN, N being the partition number.
| Serial ATA disks support hot-plugging as long as the proper power cables are used. Adaptors from legacy Molex-type connectors to SATA connectors will not provide safe hotplugging. |
