10. SATA

10.1. Introduction

There are 1 SATA ports and 1 M.2 SATA port on the AIO-3588SJD4 development board.

Precautions:

• M.2 SATA interface, please select SATA protocol SSD instead of NVME protocol SSD

10.2. Software configuration

The 1 SATA ports and 1 M.2 SATA port on the AIO-3588SJD4 development board are all ports extended by the USB3.0 expansion chip.

10.2.1. DTS configuration

Generally, configure the power supply pins in DTS according to the schematic diagram, select the correct controller node and PHY node to enable.

There is the following configuration in kernel-5.10/arch/arm64/boot/dts/rockchip/aio-3588sjd4.dtsi:

    vcc_3v0_sata: vcc-3v0-sata-regulator {
        compatible = "regulator-fixed";
        regulator-name = "vcc_3v0_sata";
        regulator-always-on;
        enable-active-high;
        status = "okay";
        gpio = <&pca9555 PCA_IO0_0 GPIO_ACTIVE_HIGH>;
    };

&combphy2_psu {
        status = "okay";
};

&usbhost3_0 {
        status = "okay";
};

&usbhost_dwc3_0 {
        status = "okay";
        dr_mode = "host";
};

&vcc5v0_host {
        status = "okay";
        /delete-property/ regulator-boot-on;
        gpio = <&pca9555 PCA_IO0_1 GPIO_ACTIVE_HIGH>;
        /delete-property/ pinctrl-names;
        /delete-property/ pinctrl-0;
};

usbhost3_0 usbhost_dwc3_0：USB3.0 controller node

combphy2_ps：PHY node

vcc_3v0_sata：M.2 SATA power pin node

10.3. Mount

10.3.1. Auto mount

Format the hard drive to a usable format in the Android system interface to mount it automatically at boot

10.3.2. Command to mount manually

• Find device nodes

ls /dev/block/sd*                                 
/dev/block/sda
/dev/block/sda1
/dev/block/sdb
/dev/block/sdb1

• Formatted as EXT4 file format

mkfs.ext4 /dev/block/sda1
mkfs.ext4 /dev/block/sdb1

• Mount

mount /dev/block/sda1 /mnt/media_rw/
mount /dev/block/sdb1 /mnt/media_rw/

• View the mount path

df -h
/dev/block/sda               916G  24K  916G   1% /mnt/media_rw

or

cat /proc/mounts  | grep sda
/dev/block/sda /mnt/media_rw ext4 rw,seclabel,relatime 0 0

10.4. Read and write speed

The transfer rate of SATA3.0 is theoretically 6.0 Gbps. You can refer to the following commands to test the read and write speed:

• dd

# The path is modified according to the actual mount path
# Write 1G file
echo 3 > /proc/sys/vm/drop_caches
busybox dd if=/dev/zero of=/mnt/media_rw/41AD-09EA/test1 bs=1M count=1024 conv=sync
# Read 1G file
echo 3 > /proc/sys/vm/drop_caches
busybox dd if=/mnt/media_rw/41AD-09EA/test1 of=/dev/null conv=sync

• fio

# Using fio will format the hard drive
# Write
fio -filename=/dev/block/sda1 -direct=1 -iodepth 1 -thread -rw=write -ioengine=psync -bs=1M -size=200G -numjobs=30 -runtime=60 -group_reporting -name=mytes
# Read
fio -filename=/dev/block/sdb1 -direct=1 -iodepth 1 -thread -rw=read -ioengine=psync -bs=1M -size=200G -numjobs=30 -runtime=60 -group_reporting -name=mytes