boards: nxp: add mcx_n9xx_evk #87639

DerekSnell · 2025-03-25T14:30:56Z

Another board for the MCXN947 SOC, very similar to FRDM-MCXN947. Nearly all of these files were copied from the FRDM-MCXN947 board.

Sharing as a draft until more tests are validated.

Using mcuboot with the qspi board variant requires mcu-tools/mcuboot#2246 . And then this build command works well:

west build -b mcx_n9xx_evk//cpu0/qspi samples/basic/blinky --sysbuild --pristine -- -DSB_CONFIG_BOOTLOADER_MCUBOOT=y

Samples and tests tested on this board:

samples/basic/blinky
samples/basic/button

Known Issues:

tests/drivers/flash/common/drivers.flash.common.default, see tests: drivers: flash: frdm_mcxn947 tests/drivers/flash/common failure #88080.
tests/drivers/regulator/voltage, see NXP MCXN947: tests/drivers/regulator/voltage fails with poor accuracy #88826

DerekSnell · 2025-03-25T14:31:37Z

@hakehuang , can you please run your tests on this new board? Thank you

hakehuang · 2025-03-26T05:22:22Z

@hakehuang , can you please run your tests on this new board? Thank you

@DerekSnell sure, I kick a full testing, will feedback once done in 1 day.

DerekSnell · 2025-03-27T17:25:22Z

Resolved build errors found with Twister.
Tested:

CPU0
- samples/sensor/mcux_lpcmp
- samples/subsys/usb/cdc_acm, both USBHS (default) and USBFS
- tests/drivers/uart/uart_basic_api/drivers.uart.basic_api.cdc_acm
CPU1
- samples/basic/threads
- tests/drivers/build_all/led/drivers.led.build
- tests/drivers/gpio/gpio_api_1pin
CPU0/QSPI
- west build -b mcx_n9xx_evk//cpu0/qspi samples/basic/blinky --sysbuild – -DSB_CONFIG_BOOTLOADER_MCUBOOT=y

DerekSnell · 2025-03-28T14:01:10Z

Rebased to use major NXL_HAL update in #84423 .

hakehuang · 2025-03-31T07:05:18Z

Rebased to use major NXL_HAL update in #84423 .

All build and board test PASS

hakehuang · 2025-04-01T07:22:54Z

boards/nxp/mcx_n9xx_evk/mcx_n9xx_evk.dtsi

+	pinctrl-0 = <&pinmux_usdhc0>;
+	pinctrl-1 = <&pinmux_usdhc0>;
+	pinctrl-2 = <&pinmux_usdhc0>;
+	cd-gpios = <&gpio2 1 GPIO_ACTIVE_LOW>;


according to the schematic P0_11/SD_VDDEN-SD_CARD need to pull high
pwr-gpios = <&gpio0 11 GPIO_ACTIVE_HIGH>;

Thanks @hakehuang , tests/subsys/fs/fat_fs_api/filesystem.fat.api.sdmmc passes now.

boards/nxp/mcx_n9xx_evk/doc/index.rst

DerekSnell · 2025-04-12T20:12:04Z

More tests and samples confirmed:

samples/sensor/thermometer for I3C
tests/drivers/hwinfo/api
tests/drivers/rtc
samples/net/dhcpv4_client
samples/drivers/display
samples/modules/lvgl/demos
samples/sensor/mcux_lpcmp
samples/subsys/ipc/openamp --sysbuild
samples/drivers/dac
tests/subsys/fs/fat_fs_api/filesystem.fat.api.sdmmc
tests/drivers/i2s/i2s_speed

Addressed

hakehuang · 2025-04-14T03:41:16Z

tests/drivers/i2c/i2c_target_api/boards/frdm_mcxn947_mcxn947_cpu0.overlay

- * LPI2C1 SCL(J2-12, P1_25/FC1_P1)    -->        LPI2C2 SCL(J2-20, P4_1/FC2_P1)
- * LPI2C1 SDA(J2-8, P1_24/FC1_P0)     -->        LPI2C2 SDA(J2-18, P4_0/FC2_P0)
+ * LPI2C1 SCL(J2-12, P0_25/FC1_P1)    -->        LPI2C2 SCL(J2-20, P4_1/FC2_P1)
+ * LPI2C1 SDA(J2-8, P0_24/FC1_P0)     -->        LPI2C2 SDA(J2-18, P4_0/FC2_P0)


would this be better to move to another pr?

Good point, @hakehuang . I removed from this PR and submitted #88837

hakehuang · 2025-04-14T03:41:30Z

tests/drivers/i2c/i2c_target_api/boards/frdm_mcxn947_mcxn947_cpu0_qspi.overlay

- * LPI2C1 SCL(J2-12, P1_25/FC1_P1)    -->        LPI2C2 SCL(J2-20, P4_1/FC2_P1)
- * LPI2C1 SDA(J2-8, P1_24/FC1_P0)     -->        LPI2C2 SDA(J2-18, P4_0/FC2_P0)
+ * LPI2C1 SCL(J2-12, P0_25/FC1_P1)    -->        LPI2C2 SCL(J2-20, P4_1/FC2_P1)
+ * LPI2C1 SDA(J2-8, P0_24/FC1_P0)     -->        LPI2C2 SDA(J2-18, P4_0/FC2_P0)


removed and submitted #88837

hakehuang · 2025-04-14T04:56:24Z

tests/drivers/i2s/i2s_speed/Readme.txt

+	- Populate JP16 and JP20
+	- Short BCLK JP20-pin3 (SAI1_RX_BCLK/P3_18) to JP20-pin1  (SAI1_TX_BCLK/P3_16)
+	- SHort SYNC JP16-pin3 (SAI1_RX_FS  /P3_19) to JP16-pin1  (SAI1_TX_FS  /P3_17)
+        - Short Data J20-pin14 (SAI1_RXD0   /P2_9)  to JP20-pin13 (SAI1_TXD0   /P2_8)


Short Data J20-pin14 (SAI1_RXD0 /P2_9) to J20-pin13 (SAI1_TXD0 /P2_8)
and it fails for my board

*** Booting Zephyr OS build v4.1.0-2349-gf300714b77c9 *** Running*** Booting Zephyr OS build v4.1.0-2349-gf300714b77c9 *** Running TESTSUITE drivers_i2s_speed =================================================================== START - test_i2s_transfer_long_44100 Assertion failed at WEST_TOPDIR/zephyr/tests/drivers/i2s/i2s_speed/src/test_i2s_speed.c:423: drivers_i2s_speed_test_i2s_transfer_long_44100: ret not equal to 0 FAIL - test_i2s_transfer_long_44100 in 2.015 seconds =================================================================== START - test_i2s_transfer_short_08000 Failed to configure I2S TX stream (-22) Assertion failed at WEST_TOPDIR/zephyr/tests/drivers/i2s/i2s_speed/src/test_i2s_speed.c:196: i2s_transfer_short: ret not equal to TC_PASS FAIL - test_i2s_transfer_short_08000 in 0.017 seconds =================================================================== START - test_i2s_transfer_short_16000

Thanks @hakehuang , passing this test also requires #88554

#88554 merged, and i2s_speed passes now in this PR.

hakehuang · 2025-04-14T11:14:55Z

tests/drivers/regulator/voltage/testcase.yaml

@@ -20,6 +20,7 @@ tests:
      - mimxrt685_evk/mimxrt685s/cm33
      - lpcxpresso55s36
      - frdm_mcxn947/mcxn947/cpu0
+      - mcx_n9xx_evk/mcxn947/cpu0


it voltage seems slightly out of the check range.

*** Booting Zephyr OS build v4.1.0-2349-gf300714b77c9 *** Running TESTSUITE regulator_voltage =================================================================== START - test_output_voltage Testing vref@111000, 12 voltage/s (tolerance: 10000 uV) Set: 1000000, read: 982000 uV Assertion failed at WEST_TOPDIR/zephyr/tests/drivers/regulator/voltage/src/main.c:97: regulator_voltage_test_output_voltage: val_mv * 1000 not between volt_uv - tols[i] and volt_uv + tols[i] inclusive FAIL - test_output_voltage in 0.027 seconds =================================================================== TESTSUITE regulator_voltage failed. ------ TESTSUITE SUMMARY START ------ SUITE FAIL - 0.00% [regulator_voltage]: pass = 0, fail = 1, skip = 0, total = 1 duration = 0.027 seconds - FAIL - [regulator_voltage.test_output_voltage] duration = 0.027 seconds ------ TESTSUITE SUMMARY END ------ =================================================================== RunID: a0172901be62d95b20cf5de5f3b72af4 PROJECT EXECUTION FAILED

Yes, the same issue is seen on the FRDM-MCXN947 board. I submitted Issue #88826

hakehuang · 2025-04-14T11:36:38Z

tests/drivers/spi/spi_loopback/boards/mcx_n9xx_evk_mcxn947_cpu0.overlay

+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/* Connect J2-10 and J2-8 */


this connection does not work for me, as I see it is used as spi for debugger. do I need remove r168, r169?

*** Booting Zephyr OS build v4.1.0-2349-gf3007*** Booting Zephyr OS build v4.1.0-2349-gf300714b77c9 *** SPI test on buffers TX/RX 0x300043a0/0x30004380, frame size = 8, DMA enabled (without CONFIG_NOCACHE_MEMORY) Polling...Running TESTSUITE spi_extra_api_features =================================================================== START - test_spi_lock_release E: Timeout waiting for transfer complete Assertion failed at WEST_TOPDIR/zephyr/tests/drivers/spi/spi_loopback/src/spi.c:109: spi_loopback_transceive: (ret is true) SPI transceive failed, code -116 FAIL - test_spi_lock_release in 0.218 seconds =================================================================== TESTSUITE spi_extra_api_features failed. Running TESTSUITE spi_extra_api_features =================================================================== START - test_spi_lock_release E: Timeout waiting for transfer complete Assertion failed at WEST_TOPDIR/zephyr/tests/drivers/spi/spi_loopback/src/spi.c:109: spi_loopback_transceive: (ret is true) SPI transceive failed, code -116 FAIL - test_spi_lock_release in 0.218 seconds =================================================================== TESTSUITE spi_extra_api_features failed. Running TESTSUITE spi_loopback =================================================================== Testing loopback spec: SLOW START - test_nop_nil_bufs PASS - test_nop_nil_bufs in 0.001 seconds =================================================================== START - test_spi_async_call Assertion failed at WEST_TOPDIR/zephyr/tests/drivers/spi/spi_loopback/src/spi.c:359: spi_async_call_cb: (k_poll(evt, 1, K_MSEC(2000)) is true) one or more events are not ready FAIL - test_spi_async_call in 2.017 seconds =================================================================== START - test_spi_complete_large_transfers

I found the issue, and it was related to the board init hook. The spi_loopback test passes now with this PR.

DerekSnell · 2025-04-20T18:28:21Z

more tests passing:

tests/drivers/spi/spi_loopback, also tests DMA
tests/drivers/i2c/i2c_target_api
tests/drivers/uart/uart_async_api/drivers.uart.async_api.lpuart

DerekSnell · 2025-04-21T13:11:10Z

Confirmed another test passes:

tests/drivers/counter/counter_basic_api/drivers.counter.basic_api

teburd · 2025-04-21T15:52:49Z

boards/nxp/mcx_n9xx_evk/board.c

+	CLOCK_SetClkDiv(kCLOCK_DivPLL1Clk0, 1U);
+#endif
+
+#if DT_NODE_HAS_STATUS_OKAY(DT_NODELABEL(flexcomm1))


This looks like its copied from mcxn947 evk, and fails to enable other flexcomm clocks if enabled in DT. This cost me quite a bit of time and was highly surprising behavior.

If I can make a bold recommendation of creating a common soc init function that any flexcomm clock if the DT node is enabled to avoid surprises?

Thanks @teburd ,
I added all the Flexcomm clocks to this file. FYI, one reason we stopped putting clock init code at the SOC level is because clock configuration is very app specific. Custom boards will usually need to customize the clock config. We moving the clock init code to the board level is easier for users. Ideally these clocks will all be configured by devicetree. But until we have that framework ready, we can add the Flexcomm clocks here. Thanks

hakehuang

board testing pass

Another board for the MCXN947 SOC, very similar to FRDM-MCXN947 Signed-off-by: Derek Snell <[email protected]>

kartben · 2025-04-24T19:37:57Z

boards/nxp/mcx_n9xx_evk/doc/index.rst

+
+Programming and Debugging
+*************************
+


Can definitely be a follow-up but would be nice to use the supported runners sphinx directive

DerekSnell added area: Boards platform: NXP NXP labels Mar 25, 2025

DerekSnell force-pushed the mcx_n9xx_evk branch 2 times, most recently from f5aafa2 to 7d2a090 Compare March 25, 2025 16:54

DerekSnell force-pushed the mcx_n9xx_evk branch from 7d2a090 to 93b5cca Compare March 27, 2025 17:22

DerekSnell force-pushed the mcx_n9xx_evk branch from 93b5cca to f17478a Compare March 28, 2025 13:47

hakehuang reviewed Apr 1, 2025

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kartben previously requested changes Apr 1, 2025

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DerekSnell mentioned this pull request Apr 3, 2025

tests: drivers: flash: frdm_mcxn947 tests/drivers/flash/common failure #88080

Open

DerekSnell mentioned this pull request Apr 12, 2025

drivers: i2s: i2s_mcux_sai: control MCLK direction with DT property #88554

Merged

DerekSnell force-pushed the mcx_n9xx_evk branch from f17478a to 450142a Compare April 12, 2025 20:10

DerekSnell force-pushed the mcx_n9xx_evk branch from 450142a to 3538d23 Compare April 12, 2025 20:27

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hakehuang reviewed Apr 14, 2025

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DerekSnell mentioned this pull request Apr 19, 2025

NXP MCXN947: tests/drivers/regulator/voltage fails with poor accuracy #88826

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DerekSnell force-pushed the mcx_n9xx_evk branch from f0ac83a to 0393ca8 Compare April 20, 2025 18:15

DerekSnell marked this pull request as ready for review April 21, 2025 13:11

github-actions bot requested review from anangl, arnopo, avisconti, carlocaione, doki-nordic, ithinuel, MaureenHelm, nashif, teburd, tristan-google, wearyzen and yperess April 21, 2025 13:12

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boards: nxp: add mcx_n9xx_evk

fcb3d18

Another board for the MCXN947 SOC, very similar to FRDM-MCXN947 Signed-off-by: Derek Snell <[email protected]>

DerekSnell dismissed hakehuang’s stale review via fcb3d18 April 22, 2025 15:13

DerekSnell force-pushed the mcx_n9xx_evk branch from 0393ca8 to fcb3d18 Compare April 22, 2025 15:13

kartben assigned mmahadevan108 and dleach02 and unassigned kartben Apr 23, 2025

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kartben merged commit dd82520 into zephyrproject-rtos:main Apr 25, 2025
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boards: nxp: add mcx_n9xx_evk #87639

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		Programming and Debugging
		*************************

boards: nxp: add mcx_n9xx_evk #87639

boards: nxp: add mcx_n9xx_evk #87639

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