NXP 88W8987 User guide

Brand: NXP

Model: 88W8987

Type: User guide

NXP 88W8987 is a 2.4/5 GHz Dual-Band 1x1 Wi-Fi 5 and Bluetooth 5 Solution supporting the latest Wi-Fi and Bluetooth standards. It provides high performance with power efficiency, supports advanced features such as MU-MIMO and OFDMA, and includes security features such as WPA3 and Enhanced Open. With its compact size and low power consumption, NXP 88W8987 is ideal for a wide range of applications, including smartphones, tablets, laptops, and IoT devices. Here are some of the key capabilities of NXP 88W8987:

High performance: NXP 88W8987 delivers high throughput and low latency for a superior user experience. It supports 802.11ac Wave 2 features such as MU-MIMO and OFDMA, which improve network capacity and efficiency.

High performance: NXP 88W8987 delivers high throughput and low latency for a superior user experience. It supports 802.11ac Wave 2 features such as MU-MIMO and OFDMA, which improve network capacity and efficiency.

UM11513

Getting Started with 88W8987-based Wireless Module on i.MX

8M Nano EVK Running Linux OS

Rev. 1 — 3 December 2020 User manual

Document information

Information Content

Keywords i.MX 8M Nano Evaluation Kit (EVK), 88W8987-based wireless module, Linux

Abstract Details the steps to run Linux OS image on i.MX 8M Nano EVK and use

88W8987 module interfaces for Wi-Fi and Bluetooth.

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Rev Date Description

v.1 20201203 Initial version

Revision history

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1 About this document

1.1 Purpose

This manual details how to load Linux OS on the i.MX 8M Nano EVK with 88W8987-

based Wireless module that supports Wi-Fi and Bluetooth Linux drivers. Initialization and

configuration of the Wi-Fi/Bluetooth interfaces are provided. Refer to I.MX Yocto Project

User's Guide for details on how-to compile a kernel image and rootfs from source.

Note: This document was written to only target 8MNANOLPD4-EVK and NXP BSP

Linux 5.4.47_2.2.0.

1.2 References

Document type Document title

Datasheet NXP - DS - 88W8987 2.4/5 GHz Dual-Band 1x1 Wi-Fi 5 and Bluetooth 5 Solution (link)

User manual NXP - UM - i.MX Yocto Project User's Guide

This document describes how to build an image for an i.MX board by using a Yocto Project

build environment. Read more at link.

User manual NXP - UM - i.MX Linux User's Guide

This document describes how to build and install the i.MX Linux OS BSP. Read more at link.

User guide NXP - UM11512 - Wireless Feature Configuration Guide for i.MX 8M Nano Platform with

88W8987-based Wireless Module

This document details the Wi-Fi/Bluetooth features and configurations for i.MX 8M Nano

EVK with 88W8987-based wireless module (link).

User guide i.MX Linux Reference Manual, IMXLXRM, (link )

Binary demo files i.MX 8M Nano EVK (link)

Table 1. Reference documents

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2 i.MX 8M Nano evaluation kit (EVK)

The i.MX 8M Nano EVK provides a platform for comprehensive evaluation of the i.MX 8M

Nano and i.MX 8M Nano Lite application processors. It delivers high performance with

power efficiency, multimedia interfaces, and Wi-Fi/Bluetooth for connectivity out-of-the

box. The two-board solution consists of a compact compute module and a larger base

board that brings out the broad connectivity that is needed for product evaluation. The

compute module is a proven, compact reference to accelerate your own design.

The Evaluation Kit (EVK) based on i.MX 8M Nano introduces developers to the i.MX 8M

Nano application processor. To speed development, hardware design files are provided,

tools and board support packages (BSPs) for Linux are also available.

For more details about the i.MX 8M Nano EVK, please refer to i.MX 8M Nano Evaluation

Kit on NXP website.

2.1 i.MX 8M Nano EVK overview

The i.MX 8M Nano Evaluation Kit (8MNANOLPD4-EVK) is based on NXP i.MX 8M Nano

application processor. The i.MX 8M Nano application processors feature NXP advanced

implementation of the Quad Arm Cortex-A53 and Cortex-M7 cores, which operate at

speeds up to 1.5 GHz and 750 MHz respectively. Each i.MX 8M Nano device provides

a 16-bit DDR3L/DDR4/LPDDR4 memory interface and other interfaces for connecting

peripherals, such as MIPI LCD, MIPI Camera, Wi-Fi, Bluetooth, Ethernet, Digital Mic, and

multi-sensors.

Figure 1. i.MX 8M Nano EVK block diagram

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For detailed information about the processor, please refer to the datasheet and reference

manual available on NXP website.

2.1.1 Compute module main features

• i.MX 8M Nano application processor with up to five cores:

– 4x Arm Cortex -A53

– 1x Arm Cortex -M7

• LPDDR4 16-bit, 2 GB

• eMMC 5.1, 32 GB

• QSPI NOR flash, 32 MB

• Power Management IC (PMIC NXP PCA9450B)

• Wi-Fi 5 and Bluetooth 5.0

2.1.2 Base board main features

• MicroSD card connector

• Two Type-C connectors

• Port1 is USB 2.0 Type-C connector

• USB to serial converter for debug

• Port2 is the only power supply port

• 1 Git/s Ethernet

• Mini-SAS MIPI-DSI connector

• Mini-SAS MIPI-CSI connectors for camera

• Infrared receiver

• LEDs for power indication and general-purpose use

• 3.5 mm audio jack for amplified speakers

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2.2 i.MX 8M Nano evaluation kit interfaces

Figure 2 shows the top view of I.MX 8M Nano evaluation kit (EVK).

Figure 2. Top view of i.MX 8M Nano EVK

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Figure 2 shows the back view of I.MX 8M Nano evaluation kit.

Figure 3. Back view of i.MX 8M Nano EVK

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2.3 i.MX 8M Nano EVK switch settings

Figure 4 shows the switch settings for Boot mode.

Figure 4. Switch settings on i.MX 8M Nano evaluation board

Table 2 shows the Boot mode switch selections.

D1 D2 D3 D4 Boot mode

1 0 0 0 Serial downloader

0 1 0 0 eMMC boot

Table 2. Boot mode switch selections (SW1101)

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3 88W8987-based wireless module

Refer to 88W8987 short data sheet and 88W8987 product overview on NXP website.

3.1 Supported RF standards

Wi-Fi Bluetooth

1x1 Wi-Fi 5 (2.4 GHz/5 GHz) Bluetooth 5.0

Table 3. Supported RF standards

3.2 Wi-Fi features

Refer to to 88W8987 Wi-Fi and Bluetooth Feature Lists on NXP website.

3.3 Supported Bluetooth features

Refer to to 88W8987 Wi-Fi and Bluetooth Feature Lists on NXP website.

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4 i.MX 8M Nano EVK Linux image setup

NXP provides a pre-built binary demo image that can be written to eMMC storage on the

i.MX 8M Nano EVK. We recommend to first use the pre-built image to bring up the board

and Wi-Fi/Bluetooth interfaces. Later on, follow i.MX Yocto Project User's Guide to create

and customize images for the EVK.

4.1 Using the pre-built image

The pre-built image is available for download on i.MX 8M Nano EVK Software and Tools

tab on NXP website. It requires to accept NXP software license agreement.

The pre-built download archive file contains all the binary demo images for

the i.MX 8M Nano EVK. The latest download when this guide was written was

L5.4.47-2.2.0_images_MX8MNEVK.zip

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The archive extracted contents is shown hereafter.

├── EULA.txt

├── fsl-image-mfgtool-initramfs-imx_mfgtools.cpio.gz.u-boot

├── GPLv2

├── Image-imx8_all.bin

├── Image-imx8mnevk.bin

├── imx8mn-ddr4-evk-ak5558.dtb

├── imx8mn-ddr4-evk.dtb

├── imx8mn-ddr4-evk-inmate.dtb

├── imx8mn-ddr4-evk-rm67191.dtb

├── imx8mn-ddr4-evk-root.dtb

├── imx8mn-ddr4-evk-rpmsg.dtb

├── imx8mn-ddr4-evk-usd-wifi.dtb

├── imx8mn-evk-8mic-revE.dtb

├── imx8mn-evk-ak5558.dtb

├── imx8mn-evk.dtb

├── imx8mn-evk-inmate.dtb

├── imx8mn-evk-rm67191.dtb

├── imx8mn-evk-root.dtb

├── imx8mn-evk-rpmsg.dtb

├── imx-boot-imx8mnddr4evk-fspi.bin-flash_ddr4_evk_flexspi

├── imx-boot-imx8mnddr4evk-sd.bin-flash_ddr4_evk

├── imx-boot-imx8mnevk-fspi.bin-flash_evk_flexspi

├── imx-boot-imx8mnevk-sd.bin-flash_evk

├── imx-image-full-imx8mnevk.manifest

├── imx-image-full-imx8mnevk.tar.bz2

├── imx-image-full-imx8mnevk.wic

├── imx-image-multimedia-imx8mnevk.manifest

├── imx-image-multimedia-imx8mnevk.tar.bz2

├── imx-image-multimedia-imx8mnevk.wic

├── imx_mcore_demos

│ ├── imx8mn_m7_TCM_hello_world.bin

│ ├── imx8mn_m7_TCM_rpmsg_lite_pingpong_rtos_linux_remote.bin

│ ├── imx8mn_m7_TCM_rpmsg_lite_str_echo_rtos.bin

│ └── imx8mn_m7_TCM_sai_low_power_audio.bin

├── QUALCOMM_ATHEROS_LICENSE_AGREEMENT.pdf

├── README.uuu

├── samples

│ ├── example_kernel_emmc.uuu

│ ├── example_kernel_nand.uuu

│ ├── example_sata.uuu

│ ├── example_spinor.uuu

│ ├── example_weimnor.uuu

│ ├── uuu.auto

│ ├── uuu_sd_m4.auto

│ └── uuu.xen

├── SCR-5.4.47_2.2.0.txt

├── uuu.auto-imx8mnddr4evk

└── uuu.auto-imx8mnevk

imx-image-full-imx8mnevk.wic is the binary file written to eMMC that boots Linux. Refer

to Section 4.3 "Flashing the image to eMMC" for steps to write the file. Please refer to

IMXLUG section "Preparing an SD/MMC card to boot" for the organization of the binary

images comprised in the .wic image.

4.2 i.MX 8M Nano Linux BSP

The i.MX 8M Nano Linux BSP is a collection of binary files, source code, and support

files used to create a U-Boot bootloader, a Linux kernel image, and a root file system for

i.MX 8M Nano EVK.

Refer to i.MX Yocto Project User's Guide for information on how to set up the Linux OS

host, how to run and configure a Yocto Project, and how to generate an image and rootfs.

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4.3 Flashing the image to eMMC

NXP has developed a free Universal Update Utility (UUU) deploy image tool that runs on

a host computer (Windows, Linux, MacOS soon) and communicates over a USB OTG/

Type C cable connected to the i.MX 8M Nano to write the image to the on-board eMMC.

The following sections describe the use of Linux host and UUU to write the .wic image to

eMMC.

Note: For more information on UUU please refer to https://github.com/NXPmicro/

mfgtools/wiki.

Download UUU

Download UUU version 1.3.171 (recommended) from https://github.com/NXPmicro/

mfgtools/releases.

Change permissions

chmod +x uuu

Copy UUU

Copy the uuu binary into the /usr/bin/ directory.

UUU usage

Follow these instructions to use the UUU for i.MX 8M Nano:

• Connect a USB cable from a computer to the USB OTG/TYPE C port on the board

• Connect a USB cable from the OTG-to-UART port to the computer for console output

• Open a Terminal emulator program (for example minicom). The i.MX 8M Nano

enumerates two consoles from the USB OTG-to-UART connection: one console is for

the Cortex-A53 cores and one console is for the Cortex-M7. The connection settings

for both consoles are 115200, 8N1, No Flow Control. On Linux the USB enumerations

typically are /dev/ttyUSB0 and /dev/ttyUSB1 for each console. Refer to Section 4.4.1

"Serial console setup".

• Set the boot pin to serial download mode (refer to Section 2.3 "i.MX 8M Nano EVK

switch settings")

The pre-built binary archive contains a uuu.auto script that extracts the release package

and writes rootfs.wic into eMMC:

ubuntu@ubuntu-desktop:/# sudo uuu uuu.auto-imx8mnevk

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4.4 Booting from eMMC

To boot the i.MX 8M Nano EVK from eMMC, set the boot switch per the settings given in

Section 2.3 "i.MX 8M Nano EVK switch settings".

4.4.1 Serial console setup

ttyUSB0 or ttyUSB1 are the serial devices. The console output is on the second ttyUSBx.

Open the serial console and login into the device:

ubuntu@ubuntu-desktop:/# sudo minicom -s -D /dev/ttyUSB1

Minicom setup configuration:

A - Serial Device : /dev/ttyUSB1

E - Bps/Par/Bits : 115200 8N1

F - Hardware Flow Control : No

G - Software Flow Control : No

Save and exit.

4.4.2 Linux OS login

The default login username for the i.MX Linux OS is root. There is no password.

4.4.3 Software package release information

The software package release version information is provided in the release notes.

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5 Bring-up of Wi-Fi interfaces

This section describes the bring-up steps for the Wi-Fi interfaces on the i.MX 8M Nano

EVK.

5.1 Load the modules

This section provides the guideline to load the driver modules and bring up the 88W8987-

based module.

• Use the nano editor available in the pre-built image to edit the configuration file

wifi_mod_para_sd8987.conf and update the module parameters

root@imx8mnevk:~# nano /lib/firmware/nxp/wifi_mod_para_sd8987.conf

Configuration file content:

SD8987 = {

cfg80211_wext=0xf

wfd_name=p2p

cal_data_cfg=none

max_vir_bss=1

fw_name=nxp/sdiouart8987_combo_v0.bin

drv_mode=7

ps_mode=2

auto_ds=2

}

• Load the modules in the kernel

root@imx8mnevk:~# modprobe moal mod_para=nxp/wifi_mod_para_sd8987.conf

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• Verify the kernel debug messages

[ 146.309321] wlan: Loading MWLAN driver

[ 146.422484] vendor=0x02DF device=0x9149 class=0 function=1

[ 146.428650] Attach moal handle ops, card interface type:

0x105

[ 146.434638] SD8987: init module param from usr cfg

[ 146.439480] card_type: SD8987, config block: 0

[ 146.443962] cfg80211_wext=0xf

[ 146.446973] wfd_name=p2p

[ 146.449524] max_vir_bss=1

[ 146.452168] cal_data_cfg=none

[ 146.455158] drv_mode = 7

[ 146.457699] ps_mode = 2

[ 146.460181] auto_ds = 2

[ 146.462655] fw_name=nxp/sdiouart8987_combo_v0.bin

[ 146.467399] SDIO: max_segs=128 max_seg_size=65535

[ 146.472128] rx_work=1 cpu_num=4

[ 146.475310] Attach mlan adapter operations.card_type is

0x105.

[ 146.481552] wlan: Enable TX SG mode

[ 146.485074] wlan: Enable RX SG mode

[ 146.490695] Request firmware: nxp/sdiouart8987_combo_v0.bin

[ 146.910805] Wlan: FW download over, firmwarelen=526996

downloaded 526996

[ 147.190919] rc rc0: two consecutive events of type pulse

[ 147.843081] WLAN FW is active

[ 147.846058] on_time is 147843455125

[ 147.869925] fw_cap_info=0x181c3f03, dev_cap_mask=0xffffffff

[ 147.875534] max_p2p_conn = 8, max_sta_conn = 8

[ 147.905836] wlan: version = SD8987---16.92.10.p207-

MXM4X16186.p6-GPL-(FP92)

[ 147.913896] wlan: Driver loaded successfully

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• Verify the Wi-Fi interfaces

root@imx8mnevk:~# ifconfig -a

Command output example:

eth0 Link encap:Ethernet HWaddr 00:04:9f:06:77:40

UP BROADCAST MULTICAST DYNAMIC MTU:1500 Metric:1

RX packets:0 errors:0 dropped:0 overruns:0 frame:0

TX packets:0 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:1000

RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)

lo Link encap:Local Loopback

inet addr:127.0.0.1 Mask:255.0.0.0

inet6 addr: ::1/128 Scope:Host

UP LOOPBACK RUNNING MTU:65536 Metric:1

RX packets:90 errors:0 dropped:0 overruns:0 frame:0

TX packets:90 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:1000

RX bytes:6708 (6.5 KiB) TX bytes:6708 (6.5 KiB)

mlan0 Link encap:Ethernet HWaddr 00:50:43:24:83:c4

BROADCAST MULTICAST MTU:1500 Metric:1

RX packets:0 errors:0 dropped:0 overruns:0 frame:0

TX packets:0 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:1000

RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)

p2p0 Link encap:Ethernet HWaddr 02:50:43:24:83:c4

BROADCAST MULTICAST MTU:1500 Metric:1

RX packets:0 errors:0 dropped:0 overruns:0 frame:0

TX packets:0 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:1000

RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)

uap0 Link encap:Ethernet HWaddr 00:50:43:24:84:c4

BROADCAST MULTICAST MTU:1500 Metric:1

RX packets:0 errors:0 dropped:0 overruns:0 frame:0

TX packets:0 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:1000

RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)

• Get the Wi-Fi driver version

root@imx8mnevk:~# cat /proc/mwlan/adapter0/uap0/info

Command output example:

driver_name = "uap"

driver_version = SD8987---w8987o-V0, MXXX, FP92, 16.92.10.p206-

MXM5X16186.p6-GPL-(FP92)

interface_name="uap0"

firmware_major_version=16.92.10

media_state="Disconnected"

mac_address="70:66:55:26:8b:6b"

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5.2 Bring up the Wi-Fi interface

Use the following steps to bring up the Wi-Fi interfaces

• Initialize mlan0 interface:

root@imx8mnevk:~# ifconfig mlan0 up

root@imx8mnevk:~# ifconfig mlan0

Command output example:

mlan0 Link encap:Ethernet HWaddr 00:50:43:24:83:c4

UP BROADCAST MULTICAST MTU:1500 Metric:1

RX packets:0 errors:0 dropped:0 overruns:0 frame:0

TX packets:0 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:1000

RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)

• Initialize uap0 interface

root@imx8mnevk:~# ifconfig uap0 up

root@imx8mnevk:~# ifconfig uap0

Command output example:

uap0 Link encap:Ethernet HWaddr 00:50:43:24:84:c4

UP BROADCAST MULTICAST MTU:1500 Metric:1

RX packets:0 errors:0 dropped:0 overruns:0 frame:0

TX packets:0 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:1000

RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)

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6 Bring-up of Bluetooth interfaces

Use the following steps to bring up the Bluetooth interfaces

• Initialize the Bluetooth interface with 115200 baudrate over the appropriate tty port (for

example /dev/ttymxc0)

root@imx8mnevk:~# hciattach /dev/ttymxc0 any 115200 flow

Command output example:

Setting TTY to N_HCI line discipline

Device setup complete

• Invoke the command to initialize hci0 interface:

root@imx8mnevk:~# hciconfig hci0 up

root@imx8mnevk:~# hciconfig

Command output example:

hci0: Type: Primary Bus: UART

BD Address: D8:C0:A6:7F:E4:6A ACL MTU: 1016:5 SCO MTU: 60:12

UP RUNNING

RX bytes:1408 acl:0 sco:0 events:80 errors:0

TX bytes:1210 acl:0 sco:0 commands:80 errors:0

• Invoke the HCI command to change the speed:

root@imx8mnevk:~# hcitool -i hci0 cmd 0x3f 0x0009 0xc0 0xc6 0x2d 0x00

root@imx8mnevk:~# killall hciattach

root@imx8mnevk:~# hciattach /dev/ttymxc0 any 3000000 flow

root@imx8mnevk:~# hciconfig hci0 up

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7 Contact information

Use the following links for more product details, queries and support.

• Home page: www.nxp.com

• Web support: nxp.com/support

• NXP community: community.nxp.com

• iMX community: community.nxp.com/community/imx

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8 Acronyms and abbreviations

Acronym Description

AP Access Point

BSP Board Support Package

BT Bluetooth

DTB Device Tree Blob

EVB Evaluation board

EVK Evaluation Kit

FW Firmware

STA Station

uSD Micro SD

WLAN Wireless Local Area Network

WPA Wi-Fi Protected Access

Table 4. Abbreviations

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NXP 88W8987 User guide

Brand: NXP

Model: 88W8987

Type: User guide

High performance: NXP 88W8987 delivers high throughput and low latency for a superior user experience. It supports 802.11ac Wave 2 features such as MU-MIMO and OFDMA, which improve network capacity and efficiency.

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