|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{{oldid|15718|2021/12/30}}|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-MX8M-L 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" |{{oldid|17615|2023/02/24}}| 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-MX8M-L-2.0.0release|-|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"|Jan 2022{{oldid|19174|2023/08/22}}|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-MX8M -L-4.0.0 release|-! style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#ededed; padding:5px; color:#000000" |2024/04/11! style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#ededed; padding:5px; color:#000000" |DESK-MX8M-L-4.1.0 release

==Peripheral USB Host USB2 OTG ==

=== Device tree configuration = ORCA SOM ====

&usb3_phy0 usb3_phy1 { vbus-power-supply = <&ptn5110>; fsl,phy-tx-vref-tune = <6>; fsl,phy-tx-rise-tune = <0>; fsl,phy-tx-preemp-amp-tune = <3>; fsl,phy-comp-dis-tune = <7>; fsl,pcs-tx-deemph-3p5db = <0x21>; fsl,phy-pcs-tx-swing-full = <0x7f2>;

&usb3_0 usb3_1 {

&usb_dwc3_0 usb_dwc3_1 { dr_mode = "otg"; extcon = <&extcon_usbotg2>; hnp-disable; srp-disable; adp-disable; rsp-disable; disable-over-current; status = "okay";};......</pre> ==== MITO 8M Mini ==== Here below an example of device tree configuration used on standard DAVE's kit for the MITO 8M Mini: From <code>imx8mm-mito8mmini.dtsi</code>: <pre>......&usbotg2 {

picophy,pre-emp-curr-control = <3>; picophy,dc-vol-level-adjust = <7>; status = "okaydisabled";};......</pre> From <code>imx8mm-mito8mmini-sbcx.dts</code>: <pre>....../ {  regulators: regulators { compatible = "simple-bus"; #address-cells = <1>; #size-cells = <0>;

port { usb3_drd_swreg_usb_pwr: endpoint usb_pwr { remotecompatible = "regulator-fixed"; regulator-name = "usb_pwr_en"; regulator-endpoint min-microvolt = <5000000>; regulator-max-microvolt = <5000000>; gpio = <&typec_dr_swgpio1 12 GPIO_ACTIVE_HIGH>; enable-active-high;

===Accessing When a USB 3.0 peripheral is inserted, in the following example a memory mass storage device, the kernel recognizes the peripheral=======Linux messages at boot time====device (i.e. class, vendor id, product id, etc.)

When a <pre class="workstation-terminal">root@desk-mx8mp:~# [ 6798.669673] usb 4-1: new SuperSpeed USB peripheral is inserted, in the following example a memory mass device number 3 using xhci-hcd[ 6798.703673] usb-storage 4-1:1.0: USB Mass Storage device, the kernel recognizes the device detected[ 6798.710479] scsi host1: usb-storage 4-1:1.0[ 6799.719808] scsi 1:0:0:0: Direct-Access Wilk USB DISK 3.0 PMAP PQ: 0 ANSI: 6[ 6799.732902] sd 1:0:0:0: [sdb] 60628992 512-byte logical blocks: (i31.e0 GB/28.9 GiB)[ 6799.741747] sd 1:0:0:0: [sdb] Write Protect is off[ 6799. class747177] sd 1:0:0:0: [sdb] Write cache: disabled, vendor idread cache: enabled, product id, etcdoesn't support DPO or FUA[ 6799.934800] sdb:[ 6799.940848] sd 1:0:0:0: [sdb] Attached SCSI removable disk</pre> ==== Usage in device mode with [https://www.kernel.org/doc/Documentation/usb/mass-storage.)txt mass-storage] ====

root@desk-mx8mp:~# [ 2406 dd if=/dev/zero of=mass_storage count=256 bs=1M256+0 records in 256+0 records out 268435456 bytes (268 MB, 256 MiB) copied, 0.464399] usb 6987911 s, 272 MB/sroot@desk-1mx8mp: USB disconnect, device number 2~# mkfs.msdos mass_storage [ 2407mkfs.fat 4.644440] usb 2(2021-1.301-31)root@desk-mx8mp:~# mkdir looproot@desk-mx8mp: new SuperSpeed Gen 1 USB device number 3 using xhci~# mount -hcdo loop mass_storage loop[ 24076664.670023248804] usbloop0: detected capacity change from 0 to 524288root@desk-mx8mp:~# echo "Test USB OTG with mass storage 2device" > loop/usb.txtroot@desk-1.3mx8mp:1.0~# umount looproot@desk-mx8mp: USB Mass Storage ~# </pre> then insert the <code>g_mass_storage</code> kernel module driver enabling an Windows PC to see it as a ''removable device detected'' [ 2407.677192] scsi host0: usb<pre class="workstation-storage 2terminal">root@desk-1.3mx8mp:1.0~# modprobe g_mass_storage removable=y file=mass_storage[ 24086677.691090844877] scsi 0Mass Storage Function, version:0:0:0: Direct-Access HYPER FLASHDISK 1507 PQ: 0 ANSI: 02009/09/11[ 24086677.701469850190] sd 0LUN:0:0:0: [sda] 129630208 512-byte logical blocksremovable file: (66.4 GB/61.8 GiBno medium)[ 24086677.709458854585] sd 0LUN:0removable file:0:0: [sda] Write Protect is off/home/root/mass_storage[ 24086677.714509859933] sd 0:0:0:0: [sda] No Caching mode page foundNumber of LUNs=1[ 24086677.719856863239] sd 0g_mass_storage gadget:0Mass Storage Gadget, version:0:0: [sda] Assuming drive cache: write through2009/09/11[ 24086677.743246870221] sdag_mass_storage gadget: sda1userspace failed to provide iSerialNumber[ 24086677.747220877281] sd 0:0:0:0g_mass_storage gadget: [sda] Attached SCSI removable diskg_mass_storage ready

Once the USB cable is connected to the PC, the kernel prints the following messages: <pre class="workstation-terminal">root@desk-mx8mp:~# [ 1493.477167] g_mass_storage gadget: high-speed config #1: Linux File-Backed Storage</pre> and the Windows PC activate the driver and the disk is available as a Drive Unit (with the ''usb.txt'' file available). ===Accessing the peripheral MITO 8M Mini=== ====Linux messages==== When a USB 2.0 peripheral is inserted, in the following example a memory mass storage device, the kernel recognizes the device (i.e. class, vendor id, product id, etc.) <pre class="workstation-terminal">root@desk-mx8mm:~# [ 22.858909] usb 1-1: new high-speed USB device number 2 using ci_hdrc[ 23.022240] usb-storage 1-1:1.0: USB Mass Storage device detected[ 23.028819] scsi host0: usb-storage 1-1:1.0[ 24.045317] scsi 0:0:0:0: Direct-Access SanDisk Cruzer Force 1.00 PQ: 0 ANSI: 6[ 24.055280] sd 0:0:0:0: [sda] 60088320 512-byte logical blocks: (30.8 GB/28.7 GiB)[ 24.063993] sd 0:0:0:0: [sda] Write Protect is off[ 24.069617] sd 0:0:0:0: [sda] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA[ 24.142194] sda: sda1[ 24.150358] sd 0:0:0:0: [sda] Attached SCSI removable disk</pre> === Additional information in host mode === 

[[Category:ORCA]] [[Category:MITO 8M Mini]]