SATA

Introduction

There is a M.2 SATA port on the AIO-3588Q development board.

The software can be configured as M.2 SATA3.0  to support SATA SSD ,
or it can be configured as M.2 PCIe2.0 to support NVMe SSD .

The default software configuration is M.2 SATA3.0, which supports the
SATA SSD .


Software configuration

Method 1:Modify system settings

Settings->Connected devices -> M.2 SSD Type

Select the option SATA or PCIe that needs to take effect


The modification will take effect only after the system is restarted

Method 2: 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, and close the controller node that is multiplexed with it.

There is the following configuration in
"kernel-5.10/arch/arm64/boot/dts/rockchip/rk3588-firefly-aio-
3588q.dtsi":

   #define M2_SATA_OR_PCIE 1 /*1 = SATA , 0 = PCIe */

   /* sata pm */
   &combphy0_ps {
   	status = "okay";
   };

   #if M2_SATA_OR_PCIE
   &sata0 {
   	status = "okay";
   };
   #else
   &pcie2x1l2 {
   	reset-gpios = <&pca9555 PCA_IO1_6 GPIO_ACTIVE_HIGH>;
   	vpcie3v3-supply = <&vcc_sata_pwr_en>;
   	status = "okay";
   };
   #endif

   &vcc_sata_pwr_en{
   	status = "okay";
   	gpio = <&pca9555 PCA_IO1_2 GPIO_ACTIVE_HIGH>;  //PCA_IO 12
   	regulator-min-microvolt = <3300000>;
   	regulator-max-microvolt = <3300000>;
   	regulator-always-on;
   	enable-active-high;
   	startup-delay-us = <5000>;
   	vin-supply = <&vcc12v_dcin>;
   };

"sata0"：sata0 controller node

"combphy0_ps"：PHY node

"pcie2x1l2"：pcie2x1l2 controller node

"vcc_sata_pwr_en"：M.2 SATA power pin node

"M2_SATA_OR_PCIE"：The default value is 1, which is configured as
SATA3.0. If it needs to be configured as PCIe2.0, it needs to be
modified to 0.

Mount

Auto mount

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

Command to mount manually

Find device nodes

   ls /dev/block/sd*                                 
   /dev/block/sda

Formatted as EXT4 file format

   mkfs.ext4 /dev/block/sda

Mount

   mount /dev/block/sda /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

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/sda -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/sda -direct=1 -iodepth 1 -thread -rw=read -ioengine=psync -bs=1M -size=200G -numjobs=30 -runtime=60 -group_reporting -name=mytes