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driver: bluetooth: hci: Add NXP BT module support

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Implement UART firmware download driver for NXP
BT module.

Only support Murata 2EL M.2 module on RT1170EVKB.

And only one instance can be supported now.

Signed-off-by: Lyle Zhu <lyle.zhu@nxp.com>
This commit is contained in:
Lyle Zhu 2024-06-12 13:57:14 +08:00 • committed by Anas Nashif
commit d164f9c0bb
7 changed files with 1324 additions and 1 deletions
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14
boards/nxp/mimxrt1170_evk/doc/index.rst
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@ -69,6 +69,7 @@ Hardware
- Expansion port
- Arduino interface
- M.2 WIFI/BT interface
- CAN bus connector
@ -172,6 +173,8 @@ RT1170 EVKB (`mimxrt1170_evk@B//cm7/cm4`)
| VIDEO | on-chip | CSI; MIPI CSI-2 Rx. Tested with | Supported (M7) | Supported (M7) |
| | | :ref:`nxp_btb44_ov5640` shield | | |
+-----------+------------+-------------------------------------+-----------------+-----------------+
| UART | NXP NW61x | M.2 WIFI/BT module | Unsupported | Supported (M7) |
+-----------+------------+-------------------------------------+-----------------+-----------------+
The default configuration can be found in the defconfig files:
:zephyr_file:`boards/nxp/mimxrt1170_evk/mimxrt1170_evk_mimxrt1176_cm7_defconfig`
@ -247,6 +250,14 @@ The MIMXRT1170 SoC has six pairs of pinmux/gpio controllers.
+---------------------------+----------------+------------------+
| GPIO_AD_20_SAI1_RX_DATA00 | SAI1_RX_DATA00 | SAI |
+---------------------------+----------------+------------------+
| GPIO_DISP_B2_10 | LPUART2_TX | M.2 BT HCI |
+---------------------------+----------------+------------------+
| GPIO_DISP_B2_11 | LPUART2_RX | M.2 BT HCI |
+---------------------------+----------------+------------------+
| GPIO_DISP_B2_12 | LPUART2_CTS_B | M.2 BT HCI |
+---------------------------+----------------+------------------+
| GPIO_DISP_B2_13 | LPUART1_RTS_B | M.2 BT HCI |
+---------------------------+----------------+------------------+
Dual Core samples
*****************
@ -291,7 +302,8 @@ cost of reduced resolution
Serial Port
===========
The MIMXRT1170 SoC has 12 UARTs. One is configured for the console and the
The MIMXRT1170 SoC has 12 UARTs. ``LPUART1`` is configured for the console,
``LPUART2`` for the Bluetooth Host Controller Interface (BT HCI), and the
remaining are not used.
Programming and Debugging

11
boards/nxp/mimxrt1170_evk/mimxrt1170_evk-pinctrl.dtsi
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@ -290,6 +290,17 @@
};
};
pinmux_lpuart2_flowcontrol: pinmux_lpuart2_flowcontrol {
group0 {
pinmux = <&iomuxc_gpio_disp_b2_11_lpuart2_rx>,
<&iomuxc_gpio_disp_b2_10_lpuart2_tx>,
<&iomuxc_gpio_disp_b2_12_lpuart2_cts_b>,
<&iomuxc_gpio_disp_b2_13_lpuart2_rts_b>;
drive-strength = "high";
slew-rate = "fast";
};
};
pinmux_sai1: pinmux_sai1 {
group0 {
pinmux = <&iomuxc_gpio_ad_17_sai1_mclk>,

27
boards/nxp/mimxrt1170_evk/mimxrt1170_evk_mimxrt1176_cm7_B.overlay
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@ -10,6 +10,7 @@
zephyr,flash-controller = &w25q512nw;
zephyr,flash = &w25q512nw;
zephyr,code-partition = &slot0_partition;
zephyr,bt-hci = &bt_hci_uart;
};
aliases {
@ -75,3 +76,29 @@
status = "okay";
};
};
m2_hci_uart: &lpuart2 {
pinctrl-0 = <&pinmux_lpuart2_flowcontrol>;
pinctrl-1 = <&pinmux_lpuart2_sleep>;
pinctrl-names = "default", "sleep";
bt_hci_uart: bt_hci_uart {
compatible = "zephyr,bt-hci-uart";
m2_bt_module {
compatible = "nxp,bt-hci-uart";
sdio-reset-gpios = <&gpio9 15 GPIO_ACTIVE_HIGH>;
w-disable-gpios = <&gpio9 30 GPIO_ACTIVE_HIGH>;
hci-operation-speed = <115200>;
hw-flow-control;
fw-download-primary-speed = <115200>;
fw-download-secondary-speed = <3000000>;
fw-download-secondary-flowcontrol;
};
};
};
&m2_hci_uart {
status = "okay";
current-speed = <115200>;
};

1
drivers/bluetooth/hci/CMakeLists.txt
View file

@ -34,3 +34,4 @@ zephyr_library_sources_ifdef(CONFIG_SOC_NRF5340_CPUAPP nrf53_support.c)
zephyr_library_sources_ifdef(CONFIG_BT_AMBIQ_HCI hci_ambiq.c apollox_blue.c)
zephyr_library_sources_ifdef(CONFIG_BT_DA1469X hci_da1469x.c)
zephyr_library_sources_ifdef(CONFIG_BT_NXP hci_nxp.c)
zephyr_library_sources_ifdef(CONFIG_BT_H4_NXP_CTLR hci_nxp_setup.c)

45
drivers/bluetooth/hci/Kconfig
View file

@ -248,3 +248,48 @@ config BT_SILABS_HCI_BUFFER_MEMORY
help
Select the size of allocated memory buffer for the Silicon Labs
Bluetooth Library.
config BT_H4_NXP_CTLR
bool "NXP Bluetooth Controller [EXPERIMENTAL]"
select GPIO
# select UART_USE_RUNTIME_CONFIGURE
select EXPERIMENTAL
depends on BT_H4
select CRC
default y
depends on DT_HAS_NXP_BT_HCI_UART_ENABLED
help
Enables support for NXP Bluetooth Controller.
Murata 2EL M.2 Moudle base on NXP IW612 Chipset which supports
Wi-Fi® 802.11a/b/g/n/ac/ax + Bluetooth® 5.3 BR/EDR/LE + IEEE802.1.5.4
up to 601 Mbps data rate on Wi-Fi® and 2Mbps data rate on Bluetooth®.
4-wire UART@3M baud is supported. PCM for audio is also supported.
Details of the module could be fond on
https://www.embeddedartists.com/products/2el-m-2-module/
The configuration depends on the firmware (named uart_nw61x_se.h)
of Murata 2EL M.2 Moudle. It could be downloaded here
https://github.com/NXP/wifi_nxp/blob/MCUX_2.15.000/wifi_bt_firmware/nw61x/uart_nw61x_se.h
And it needs to be placed into the folder <zephyrproject>/zephyr/
drivers/bluetooth/hci.
More inforamtion about NXP Bluetooth profuct could be found on
https://www.nxp.com/products/wireless-connectivity/wi-fi-plus-bluetooth-plus-802-15-4:WIFI-BLUETOOTH
if BT_H4_NXP_CTLR
config BT_H4_NXP_CTLR_WAIT_HDR_SIG_TIMEOUT
int "Timeout for waiting HDR Signure"
range 1000 60000
default 2500
help
Timeout for waiting HDR Signure. Unit is millisecond.
config BT_H4_NXP_CTLR_WAIT_TIME_AFTER_UPLOAD
int "Waiting time after firmware is uploaded"
range 1000 5000
default 1000
help
Waiting time after firmware is uploaded. Unit is millisecond.
endif #BT_H4_NXP_CTLR

1177
drivers/bluetooth/hci/hci_nxp_setup.c Normal file
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50
dts/bindings/bluetooth/nxp,bt-hci-uart.yaml Normal file
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@ -0,0 +1,50 @@
# Copyright 2024 NXP
# SPDX-License-Identifier: Apache-2.0
description: |
Bluetooth module that uses NXP's Bluetooth Module (e.g. Murata 2EL)
compatible: "nxp,bt-hci-uart"
include: base.yaml
properties:
sdio-reset-gpios:
type: phandle-array
required: true
w-disable-gpios:
type: phandle-array
required: true
hci-operation-speed:
type: int
description: |
HCI UART baudrate for feature operation. If not defined
bus/current-speed will be used as default.
hw-flow-control:
type: boolean
description: Set to enable RTS/CTS flow control for HCI.
fw-download-primary-speed:
type: int
description: |
HCI UART primary baudrate for FW download operation.
If not defined bus/current-speed will be used as default.
fw-download-primary-flowcontrol:
type: boolean
description: |
Flow control setting for primary speed.
fw-download-secondary-speed:
type: int
description: |
HCI UART secondary baudrate for FW download operation.
If not defined bus/current-speed will be used as default.
fw-download-secondary-flowcontrol:
type: boolean
description: |
Flow control setting for secondary speed.