DESK-MX8M-L/Peripherals/WiFi-Bluetooth

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History
Issue Date Notes

2024/04/08

DESK-MX8M-L-4.1.0 release

2024/05/31

DESK-MX8M-L-4.1.0 release

2025/01/30

DESK-MX8M-L-4.2.1 release
2026/01/29 Add note for Wifi and Bluetooth module usage


Peripheral WiFi/Bluetooth[edit | edit source]

Device tree configuration[edit | edit source]

ORCA SOM[edit | edit source]

Here below an example of device tree configuration used on standard DAVE's kit for the ORCA SOM:

From imx8mp-mito8mplus-cb1001.dts: 

/ {
...
	usdhc1_pwrseq: usdhc1_pwrseq {
		compatible = "mmc-pwrseq-simple";
		reset-gpios = <&gpio2 8 GPIO_ACTIVE_LOW>;
	};
...
};

...
...

/* AW-CM276MA SDIOUART */
&usdhc1 {
	pinctrl-names = "default", "state_100mhz", "state_200mhz";
	pinctrl-0 = <&pinctrl_usdhc1>;
	pinctrl-1 = <&pinctrl_usdhc1_100mhz>;
	pinctrl-2 = <&pinctrl_usdhc1_200mhz>;
	keep-power-in-suspend;
	non-removable;
	wakeup-source;
	mmc-pwrseq = <&usdhc1_pwrseq>;
	fsl,sdio-async-interrupt-enabled;
	no-1-8-v;
	max-frequency = <24000000>;
	status = "okay";
};

and from imx8mp-mito8mplus.dtsi: 

	pinctrl_usdhc1: usdhc1grp {
		fsl,pins = <
			MX8MP_IOMUXC_SD1_CLK__USDHC1_CLK	0x190
			MX8MP_IOMUXC_SD1_CMD__USDHC1_CMD	0x1d0
			MX8MP_IOMUXC_SD1_DATA0__USDHC1_DATA0	0x1d0
			MX8MP_IOMUXC_SD1_DATA1__USDHC1_DATA1	0x1d0
			MX8MP_IOMUXC_SD1_DATA2__USDHC1_DATA2	0x1d0
			MX8MP_IOMUXC_SD1_DATA3__USDHC1_DATA3	0x1d0
                        MX8MP_IOMUXC_SD1_DATA6__GPIO2_IO08	0x10
		>;
	};

	pinctrl_usdhc1_100mhz: usdhc1grp-100mhz {
		fsl,pins = <
			MX8MP_IOMUXC_SD1_CLK__USDHC1_CLK	0x194
			MX8MP_IOMUXC_SD1_CMD__USDHC1_CMD	0x1d4
			MX8MP_IOMUXC_SD1_DATA0__USDHC1_DATA0	0x1d4
			MX8MP_IOMUXC_SD1_DATA1__USDHC1_DATA1	0x1d4
			MX8MP_IOMUXC_SD1_DATA2__USDHC1_DATA2	0x1d4
			MX8MP_IOMUXC_SD1_DATA3__USDHC1_DATA3	0x1d4
                        MX8MP_IOMUXC_SD1_DATA6__GPIO2_IO08	0x10
		>;
	};

	pinctrl_usdhc1_200mhz: usdhc1grp-200mhz {
		fsl,pins = <
			MX8MP_IOMUXC_SD1_CLK__USDHC1_CLK	0x196
			MX8MP_IOMUXC_SD1_CMD__USDHC1_CMD	0x1d6
			MX8MP_IOMUXC_SD1_DATA0__USDHC1_DATA0	0x1d6
			MX8MP_IOMUXC_SD1_DATA1__USDHC1_DATA1	0x1d6
			MX8MP_IOMUXC_SD1_DATA2__USDHC1_DATA2	0x1d6
			MX8MP_IOMUXC_SD1_DATA3__USDHC1_DATA3	0x1d6
                        MX8MP_IOMUXC_SD1_DATA6__GPIO2_IO08	0x10
		>;
	};
BT[edit | edit source]
200px-Emblem-important.svg.png

Bluetooth interface uses the same uart pads used in the RS485 L9 connector. By default, uart3 is enabled as RS485 interface. For using the BT interface, the following peripheral configuration has to be used.

In the imx8mp-mito8mplus-cb1001.dts file: 

/* AW-CM276MA Bluetooth UART */
&uart3 {
	pinctrl-names = "default";
	pinctrl-0 = <&pinctrl_uart3_bt>;
	assigned-clocks = <&clk IMX8MP_CLK_UART3>;
	assigned-clock-parents = <&clk IMX8MP_SYS_PLL1_80M>;
	fsl,uart-has-rtscts;
	status = "okay";
};

MITO 8M Mini[edit | edit source]

For device-tree configuration, please take a look to PCIe page for DESK-MX8M-L

Accessing the peripheral SBC ORCA[edit | edit source]

200px-Emblem-important.svg.png

The Wifi module used in the ORCA Evaluation Kit S/N SB8MU6120B2R version is the DWS: for the related usage information, please refer to this wiki page

Linux messages at boot time[edit | edit source]

  • load the moal wlan driver for the NXP/Marvell SD8997 chipset
...
...                                                                                  
root@desk-mx8mp:~# modprobe moal mod_para=nxp/wifi_mod_para.conf
[   29.113964] wlan: Loading MWLAN driver
[   29.118613] wlan: Register to Bus Driver...
[   29.128076] vendor=0x02DF device=0x9141 class=0 function=1
[   29.133656] Attach moal handle ops, card interface type: 0x104
[   29.141637] SD8997: init module param from usr cfg
[   29.146457] card_type: SD8997, config block: 0
[   29.150946] cfg80211_wext=0xf
[   29.153929] max_vir_bss=1
[   29.156563] cal_data_cfg=none
[   29.159530] ps_mode = 1
[   29.161986] auto_ds = 1
[   29.164447] host_mlme=enable
[   29.167330] fw_name=nxp/sdiouart8997_combo_v4.bin
[   29.172077] SDIO: max_segs=128 max_seg_size=65535
[   29.176800] rx_work=1 cpu_num=4
[   29.179973] Attach mlan adapter operations.card_type is 0x104.
[   29.186198] wlan: Enable TX SG mode
[   29.189713] wlan: Enable RX SG mode
[   29.200374] Request firmware: nxp/sdiouart8997_combo_v4.bin
[   30.177507] Wlan: FW download over, firmwarelen=594556 downloaded 594556
[   30.888915] WLAN FW is active
[   30.891897] on_time is 30751963125
[   30.923386] fw_cap_info=0x187c7fa3, dev_cap_mask=0xffffffff
[   30.928999] max_p2p_conn = 8, max_sta_conn = 8
[   30.950120] Register NXP 802.11 Adapter mlan0
[   30.954748] wlan: uap%d set max_mtu 2000
[   30.960330] Register NXP 802.11 Adapter uap0
[   30.967481] Register NXP 802.11 Adapter wfd0
[   30.971983] wlan: version = SD8997----16.92.21.p55.3-MM5X16366.p5-GPL-(FP92)
[   30.984959] wlan: Register to Bus Driver Done
[   30.989428] wlan: Driver loaded successfully
...
...

WiFi[edit | edit source]

Setup for static connection[edit | edit source]
  • check that the interface has been properly intialized
root@desk-mx8mp:~# ifconfig mlan0
mlan0: flags=4098<BROADCAST,MULTICAST>  mtu 1500
        ether 48:e7:da:78:33:6b  txqueuelen 1000  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
  • setup the wpa_supplicant.conf configuration file for handling the WiFi connection, for example:
root@desk-mx8mp:~# cat /etc/wpa_supplicant.conf
network={
    ssid="ZyXEL"
    key_mgmt=NONE
}
  • apply the wpa_supplicant.conf configuration file manually starting the wpa_supplicant:
root@desk-mx8mp:~# wpa_supplicant -i mlan0 -c /etc/wpa_supplicant.conf -B
Successfully initialized wpa_supplicant
root@desk-mx8mp:~# [  102.732838] wlan: mlan0 START SCAN
[  107.685985] wlan: SCAN COMPLETED: scanned AP count=5
[  107.694267] wlan: HostMlme mlan0 send auth to bssid fc:XX:XX:XX:03:90
[  107.929571] mlan0:
[  107.929585] wlan: HostMlme Auth received from fc:XX:XX:XX:03:90
[  108.101873] wlan: HostMlme mlan0 Connected to bssid fc:XX:XX:XX:03:90 successfully
[  108.110851] IPv6: ADDRCONF(NETDEV_CHANGE): mlan0: link becomes ready
Successfully initialized wpa_supplicant
...
  • set the mlan0 IP address:
root@desk-mx8mp:~# ip addr add 192.168.11.89/255.255.255.0 dev mlan0
  • then, the network access is enabled
root@desk-mx8mp:~# ping 192.168.11.243 -c 4
PING 192.168.11.243 (192.168.11.243) 56(84) bytes of data.
64 bytes from 192.168.11.243: icmp_seq=1 ttl=64 time=108 ms
64 bytes from 192.168.11.243: icmp_seq=2 ttl=64 time=23.3 ms
64 bytes from 192.168.11.243: icmp_seq=3 ttl=64 time=80.4 ms
64 bytes from 192.168.11.243: icmp_seq=4 ttl=64 time=31.9 ms

--- 192.168.11.243 ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3005ms
rtt min/avg/max/mdev = 23.333/60.832/107.753/34.737 ms
root@desk-mx8mp:~#
DHCP connection[edit | edit source]
  • check the interface has been properly recognized
root@desk-mx8mp:~# ifconfig mlan0
mlan0: flags=4098<BROADCAST,MULTICAST>  mtu 1500
        ether e8:fb:1c:e1:80:65  txqueuelen 1000  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
  • add the systemd-networkd network configuration file for mlan0 network interface
root@desk-mx8mp:~# cat /etc/systemd/network/21-mlan0.network
[Match]
Name=mlan0

# Prevent the interface loading if the kernel boots from nfs
KernelCommandLine=!nfsroot

[Network]
DHCP=yes
  • setup your wpa_supplicant.conf configuration file for handle WiFi connection
root@desk-mx8mp:~# cat /etc/wpa_supplicant.conf
network={
        ssid="daveguest"
        psk="******"
}

Once the system has reboot, manually start the wpa_supplicant using the mlan0 interface and the wpa_supplicant.conf configuration file 

Successfully initialized wpa_supplicant
root@desk-mx8mp:~# [   37.959411] wlan: mlan0 START SCAN
[   43.231759] wlan: SCAN COMPLETED: scanned AP count=5
[   43.246886] wlan: HostMlme mlan0 send auth to bssid d0:XX:XX:XX:87:e8
[   43.257254] mlan0:
[   43.257264] wlan: HostMlme Auth received from d0:XX:XX:XX:87:e8
[   43.280121] wlan: HostMlme mlan0 Connected to bssid d0:XX:XX:XX:87:e8 successfully
[   43.291872] mlan0:
[   43.291919] wlan: Send EAPOL pkt to d0:XX:XX:XX:87:e8
[   43.312739] mlan0:
[   43.312752] wlan: Send EAPOL pkt to d0:XX:XX:XX:87:e8
[   43.320857] IPv6: ADDRCONF(NETDEV_CHANGE): mlan0: link becomes ready
[   43.327719] woal_cfg80211_set_rekey_data return: gtk_rekey_offload is DISABLE
  • the interface will be properly configured and the network access is enabled
root@desk-mx8mp:~# ping www.dave.eu -c 4
PING www.dave.eu (51.91.120.202) 56(84) bytes of data.
64 bytes from 202.ip-51-91-120.eu (51.91.120.202): icmp_seq=1 ttl=48 time=42.2 ms
64 bytes from 202.ip-51-91-120.eu (51.91.120.202): icmp_seq=2 ttl=48 time=216 ms
64 bytes from 202.ip-51-91-120.eu (51.91.120.202): icmp_seq=3 ttl=48 time=146 ms
64 bytes from 202.ip-51-91-120.eu (51.91.120.202): icmp_seq=4 ttl=48 time=66.0 ms

--- www.dave.eu ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3004ms
rtt min/avg/max/mdev = 42.243/117.484/215.939/68.572 ms
root@desk-mx8mp:~#

BT[edit | edit source]

  • using the hcitools attache the peripheral
root@desk-mx8mp:~# hciattach /dev/ttymxc2 any 115200 flow
<flow> option
FLOW_CTL on
Setting TTY to N_HCI line discipline
Device setup complete
root@desk-mx8mp:~#
  • check the rfkill status
root@desk-mx8mp:~# rfkill list
0: phy0: Wireless LAN
        Soft blocked: no
        Hard blocked: no
1: hci0: Bluetooth
        Soft blocked: no
        Hard blocked: no
  • activate the hci0 interface
root@desk-mx8mp:~# hciconfig hci0 up
  • scan and discovery the nearby bluetooth devices
root@desk-mx8mp:~# bluetoothctl
Agent registered
[CHG] Controller E8:FB:1C:E1:57:04 Pairable: yes
[bluetooth]# scan on
Discovery started
[CHG] Controller E8:FB:1C:E1:57:04 Discovering: yes
[NEW] Device 4B:AE:F9:22:0F:9D 4B-AE-F9-22-0F-9D
[NEW] Device 76:57:7A:09:E8:CF 76-57-7A-09-E8-CF
[NEW] Device 5B:58:7D:BB:FC:68 iPhone
[CHG] Device 76:57:7A:09:E8:CF ManufacturerData Key: 0x004c
[CHG] Device 76:57:7A:09:E8:CF ManufacturerData Value:
  10 07 56 1f c4 3a ac 36 28                       ..V..:.6(
[NEW] Device 72:D6:AF:D1:30:64 72-D6-AF-D1-30-64
[CHG] Device 76:57:7A:09:E8:CF ManufacturerData Key: 0x004c
[CHG] Device 76:57:7A:09:E8:CF ManufacturerData Value:
  10 07 16 1f c4 3a ac 36 58                       .....:.6X
[DEL] Device 72:D6:AF:D1:30:64 72-D6-AF-D1-30-64
[DEL] Device 5B:58:7D:BB:FC:68 iPhone
[bluetooth]# scan off
[CHG] Device 76:57:7A:09:E8:CF TxPower is nil
[CHG] Device 76:57:7A:09:E8:CF RSSI is nil
[CHG] Device 4B:AE:F9:22:0F:9D TxPower is nil
[CHG] Device 4B:AE:F9:22:0F:9D RSSI is nil
[CHG] Controller E8:FB:1C:E1:57:04 Discovering: no
Discovery stopped
[bluetooth]# exit

Accessing the peripheral MITO 8M Mini[edit | edit source]

Linux messages at boot time[edit | edit source]

Check that AzureWave driver for PCIe was initialized: 

...
...                                                                                  
[    6.519674] mwifiex_pcie 0000:01:00.0: no quirks enabled
[    6.525230] mwifiex_pcie 0000:01:00.0: enabling device (0000 -> 0002)
[    6.593357] mwifiex_pcie: PCI memory map Virt0: (____ptrval____) PCI memory map Virt2: (____ptrval____)
...
[    7.638822] mwifiex_pcie 0000:01:00.0: info: FW download over, size 632240 bytes
...
[    8.509865] mwifiex_pcie 0000:01:00.0: WLAN FW is active
[    8.562243] mwifiex_pcie 0000:01:00.0: info: MWIFIEX VERSION: mwifiex 1.0 (16.68.1.p179)
[    8.570473] mwifiex_pcie 0000:01:00.0: driver_version = mwifiex 1.0 (16.68.1.p179)
...
...

and the WiFi module is available as PCIe device: 

root@desk-mx8mm:~# lspci
00:00.0 PCI bridge: Synopsys, Inc. DWC_usb3 / PCIe bridge (rev 01)
01:00.0 Ethernet controller: Marvell Technology Group Ltd. Device 2b42 (rev 11)
root@desk-mx8mm:~#

Setup for static connection[edit | edit source]

Check that the interface is properly intialized: 

root@desk-mx8mm:~# ifconfig mlan0
mlan0: flags=4098<BROADCAST,MULTICAST>  mtu 1500
        ether e8:fb:1c:e1:80:65  txqueuelen 1000  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

Setup the wpa_supplicant.conf configuration file for handling the WiFi connection, for example: 

root@desk-mx8mm:~# cat /etc/wpa_supplicant.conf
network={
    ssid="ZyXEL"
    key_mgmt=NONE
}

Apply the wpa_supplicant.conf configuration file manually starting the wpa_supplicant: 

root@desk-mx8mm:~# wpa_supplicant -i mlan0 -c /etc/wpa_supplicant.conf -B
Successfully initialized wpa_supplicant
...
root@desk-mx8mm:~#

Add the mlan0 IP address: 

root@desk-mx8mm:~# ip addr add 192.168.11.165/255.255.255.0 dev mlan0

Then the network access is enabled: 

root@desk-mx8mm:~# ping 192.168.11.243 -c 4
PING 192.168.11.243 (192.168.11.243) 56(84) bytes of data.
64 bytes from 192.168.11.243: icmp_seq=1 ttl=64 time=2.93 ms
64 bytes from 192.168.11.243: icmp_seq=2 ttl=64 time=2.96 ms
64 bytes from 192.168.11.243: icmp_seq=3 ttl=64 time=1.97 ms
64 bytes from 192.168.11.243: icmp_seq=4 ttl=64 time=2.77 ms

--- 192.168.11.243 ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3005ms
rtt min/avg/max/mdev = 1.969/2.657/2.962/0.404 ms
root@desk-mx8mm:~#

Setup for DHCP connection[edit | edit source]

Check that the interface is properly recognized: 

root@desk-mx8mm:~# ifconfig mlan0
mlan0: flags=4098<BROADCAST,MULTICAST>  mtu 1500
        ether e8:fb:1c:e1:80:65  txqueuelen 1000  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

Add the network configuration for systemd-networkd 

root@desk-mx8mm:~# cat /etc/systemd/network/21-mlan0.network
[Match]
Name=mlan0

# Prevent the interface loading if the kernel boots from nfs
KernelCommandLine=!nfsroot

[Network]
DHCP=yes

Setup your wpa_supplicant.conf configuration file for handle WiFi connection: 

root@desk-mx8mm:~# cat /etc/wpa_supplicant.conf
network={
        ssid="daveguest"
        psk="******"
}

Reboot the system and manually start the wpa_supplicant using the mlan0 interface and the wpa_supplicant.conf configuration file: 

root@desk-mx8mm:~# wpa_supplicant -i mlan0 -c /etc/wpa_supplicant.conf -B
Successfully initialized wpa_supplicant
...
[  131.877506] ieee80211 phy0: mwifiex_cfg80211_sched_scan_start : Invalid Sched_scan parameters
root@desk-mx8mm:~# [  134.728825] mwifiex_pcie 0000:01:00.0: info: trying to associate to bssid d0:21:f9:35:87:e8
[  134.754118] mwifiex_pcie 0000:01:00.0: info: associated to bssid d0:21:f9:35:87:e8 successfully
[  134.778115] IPv6: ADDRCONF(NETDEV_CHANGE): mlan0: link becomes ready

Then the interface will be properly configured and the network access is enabled: 

root@desk-mx8mm:~# ping www.dave.eu -c 4
PING www.dave.eu (51.91.120.202) 56(84) bytes of data.
64 bytes from 202.ip-51-91-120.eu (51.91.120.202): icmp_seq=1 ttl=48 time=332 ms
64 bytes from 202.ip-51-91-120.eu (51.91.120.202): icmp_seq=2 ttl=48 time=254 ms
64 bytes from 202.ip-51-91-120.eu (51.91.120.202): icmp_seq=3 ttl=48 time=174 ms
64 bytes from 202.ip-51-91-120.eu (51.91.120.202): icmp_seq=4 ttl=48 time=94.2 ms

--- www.dave.eu ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3004ms
rtt min/avg/max/mdev = 94.197/213.585/332.136/88.720 ms
root@desk-mx8mm:~#

Additional information[edit | edit source]

HOME SOMs SBCs ToloMEO Embedded Assistant Sale-tag.pngGET A QUOTE Customer-service.pngONLINE HELPDESK
Roadmap IoT Services ML/AI services Embedded Design Services
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