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| == Sections == | | == Sections == |
|
| |
| === Available dtbs ===
| |
| <section begin=DART-MX8M-PLUS_DTBS_SECTION/><!--
| |
| -->To allow Cortex M7 accessing shared resources without experiencing Linux kernel conflicts, a dedicated device tree must be loaded, containing '''m7''' label in the name, using the fdt_file environment variable in U-Boot.
| |
|
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| This device tree disables some of the base device tree nodes in order to avoid conflicts between the main processor and Cortex M7.
| |
|
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| {| class="wikitable"
| |
| |-
| |
| ! scope="col" | File Name<br/>
| |
| ! scope="col" | Description<br/>
| |
| |-
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| | style="padding: 5px;"| imx8mp-var-dart-dt8mcustomboard-'''m7'''.dtb
| |
| | style="padding: 5px;"| DART-MX8M-PLUS device tree blob for kernel >= 5.4.70 (Yocto Zeus) on DT8MCustomBoard 2.x
| |
| |-
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| | style="padding: 5px;"| imx8mp-var-dart-dt8mcustomboard-legacy-'''m7'''.dtb
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| | style="padding: 5px;"| DART-MX8M-PLUS device tree blob for kernel >= 5.4.70 (Yocto Zeus) on on DT8MCustomBoard 1.x
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| |-
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| | style="padding: 5px;"| imx8mp-var-som-symphony-'''m7'''.dtb
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| | style="padding: 5px;"| VAR-SOM-MX8M-PLUS device tree blob for kernels >= 5.4.70 (Yocto Zeus) on on Symphony-Board
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| |-
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| | style="padding: 5px;"| imx8mp-var-som-symphony-2nd-ov5640'''m7'''.dtb
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| | style="padding: 5px;"| VAR-SOM-MX8M-PLUS device tree blob for kernels >= 5.4.70 (Yocto Zeus) on on Symphony-Board with 2nd OV5640
| |
| |-
| |
| |}
| |
|
| |
| <section end=DART-MX8M-PLUS_DTBS_SECTION/>
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|
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| === Default pins === | | === Default pins === |
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| * samples/basic/button<!-- | | * samples/basic/button<!-- |
| --><section end=DART-MX8M-PLUS_DEMOS_SECTION/> | | --><section end=DART-MX8M-PLUS_DEMOS_SECTION/> |
|
| |
| === JTAG ===
| |
| <section begin=DART-MX8M-PLUS_JTAG_SECTION/><!--
| |
|
| |
| -->The VAR-SOM-MX8M-PLUS exposes JTAG interface via an optional 10-pin header, on the SOM top left side.<br>
| |
| The DART-MX8M-PLUS exports JTAG interface via an optional 10-pin header, on the DT8MCustomBoard top side.
| |
|
| |
| Here is the pinout:
| |
|
| |
| {| class="wikitable"
| |
| |-
| |
| ! scope="col" | pin
| |
| ! scope="col" | signal
| |
| ! scope="col" | description
| |
| ! scope="col" | pin
| |
| ! scope="col" | signal
| |
| ! scope="col" | description
| |
| |-
| |
| | '''1'''
| |
| | JTAG_VREF
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| | JTAG IO reference voltage,<br>connected to SOM_3V3_PER via 150 Ohm.
| |
| | '''2'''
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| | JTAG_TMS
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| | JTAG Mode Select signal
| |
| |-
| |
| | '''3'''
| |
| | GND
| |
| | Digital Ground
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| | '''4'''
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| | JTAG_TCK
| |
| | JTAG Clock signal,<br>include PD of 8.2K Ohm.
| |
| |-
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| | '''5'''
| |
| | GND
| |
| | Digital Ground
| |
| | '''6'''
| |
| | JTAG_TDO
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| | JTAG Data Out signal
| |
| |-
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| | '''7'''
| |
| | GND
| |
| | Digital Ground
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| | '''8'''
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| | JTAG_TDI
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| | JTAG Data In signal
| |
| |-
| |
| | '''9'''
| |
| | JTAG_TRST_B
| |
| | JTAG Reset signal,<br>active low signal
| |
| | '''10'''
| |
| | POR_B
| |
| | Programmer Reset,<br>used to put the SOC in reset state.
| |
| |-
| |
| |}
| |
|
| |
| Please refer to SoM datasheet for further details.<!--
| |
| --><section end=DART-MX8M-PLUS_JTAG_SECTION/>
| |
|
| |
|
| == Releases == | | == Releases == |
Revision as of 19:11, 28 February 2025
DART-MX8M-PLUS
Sections
Default pins
Default pins used by the demos are:
| DART-MX8M-PLUS
|
| Function
|
SoC balls
|
SoM pins
|
DT8MCB pins
|
Notes
|
| UART3 RX/TX
|
AE6 / AJ4
|
J2.87 / J2.89
|
J12.11 / J12.13
|
Zephyr debug console
|
| GPIO3_IO09
|
N24
|
J1.46
|
J41.3
|
Output of the Blinky/Button demo
Pin referenced to 1.8V
|
| GPIO3_IO08
|
L24
|
J1.50
|
J41.5
|
Input of the Button demo
Pin referenced to 1.8V
|
| VAR-SOM-MX8M-PLUS
|
| Function
|
SoC balls
|
SoM pins
|
Symphony pins
|
Notes
|
| UART4 RX/TX
|
AH5 / AJ5
|
J1.115 / J1.171
|
J18.9 / J18.7
|
Zephyr debug console
|
| GPIO3_IO14
|
R26
|
J1.79
|
J17.10
|
Output of the Blinky/Button demo
Pin referenced to 1.8V
|
| GPIO3_IO06
|
R25
|
J1.84
|
J17.3
|
Input of the Button demo
Pin referenced to 1.8V
|
Available Demos
- samples/hello_world
- samples/basic/blinky
- samples/basic/button
Releases
mx8mp-zephyr-4.0.0-v1.0
*HARDWARE_NAME = DART-MX8M-PLUS
- RELEASE_NAME = mx8mp-zephyr-4.0.0-v1.0
- RELEASE_LINK = mx8mp-zephyr-4.0.0-v1.0
- SDK_PATH = ~/zephyrproject/zephyr
- SDK_GIT_URL = https://github.com/varigit/zephyr
- SDK_GIT_BRANCH = v4.0-branch_var01
- ZEPHYR_VERSION = 4.0.0
- BOARD_FOLDER = boards/variscite/imx8mp_var
- DOCS_FOLDER = doc
- PINS_SECTION = DART-MX8M-PLUS_PINS_SECTION
- DEMOS_SECTION = DART-MX8M-PLUS_DEMOS_SECTION
- DTBS_SECTION = DART-MX8M-PLUS_DTBS_SECTION
- JTAG_SECTION = DART-MX8M-PLUS_JTAG_SECTION
- NXP_REFERENCE_KIT = EVK-MIMX8MP
- YOCTO_RELEASE_TAG = mx8mp-yocto-scarthgap-6.6.23_2.0.0-v1.1