driver: bluetooth: hci: Add NXP BT module support

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. (cherry picked from commit d164f9c) Original-Signed-off-by: Lyle Zhu <lyle.zhu@nxp.com> GitOrigin-RevId: d164f9c Change-Id: I6527fa722f1f92a9816d3a27e9c0f1f91c5ffd80 Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/zephyr/+/5629501 Tested-by: ChromeOS Prod (Robot) <chromeos-ci-prod@chromeos-bot.iam.gserviceaccount.com> Tested-by: Jeremy Bettis <jbettis@chromium.org> Reviewed-by: Jeremy Bettis <jbettis@chromium.org> Commit-Queue: Jeremy Bettis <jbettis@chromium.org>
coreboot · Jun 13, 2024 · 37fb666 · 37fb666
1 parent f08e32b
commit 37fb666
Show file tree

Hide file tree

Showing 7 changed files with 1,324 additions and 1 deletion.
diff --git a/boards/nxp/mimxrt1170_evk/doc/index.rst b/boards/nxp/mimxrt1170_evk/doc/index.rst
@@ -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

diff --git a/boards/nxp/mimxrt1170_evk/mimxrt1170_evk-pinctrl.dtsi b/boards/nxp/mimxrt1170_evk/mimxrt1170_evk-pinctrl.dtsi
@@ -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>,

diff --git a/boards/nxp/mimxrt1170_evk/mimxrt1170_evk_mimxrt1176_cm7_B.overlay b/boards/nxp/mimxrt1170_evk/mimxrt1170_evk_mimxrt1176_cm7_B.overlay
@@ -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>;
+};
diff --git a/drivers/bluetooth/hci/CMakeLists.txt b/drivers/bluetooth/hci/CMakeLists.txt
@@ -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)
diff --git a/drivers/bluetooth/hci/Kconfig b/drivers/bluetooth/hci/Kconfig
@@ -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