8304f32267
Updates to the JH7110 common description: - add detailed overview of JH-7110 SoC and boot process - revise descriptions of deprecated StarFive loader modes - refresh build directions grouped with SPL debug advice - reduce usage instructions into common methods shared by supported boards - cite starfive_visionfive2 board maintainer description of StarFive loader - cite published datasheets for ambient operating temperature data Redundant/deprecated sections of each board doc are dropped accordingly: - deepcomputing fml13v01 - milk-v mars - pine64 star64 (also add inclusion of JH7110 common description) - visionfive2 Signed-off-by: E Shattow <e@freeshell.de>
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1.5 KiB
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49 lines
1.5 KiB
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.. SPDX-License-Identifier: GPL-2.0-or-later
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DeepComputing Framework Motherboard (FLM13V01)
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==============================================
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The DeepComputing Framework motherboard (FLM13V01) can be combined with a
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13 inch Framework laptop chassis to provide a complete laptop.
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U-Boot for the board uses the same binaries as the VisionFive 2 board.
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Currently only serial console output is supported by mainline U-Boot.
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Device-tree selection
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---------------------
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The product ID stored in the board EEPROM is used by U-Boot SPL to select the
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right configuration and device-tree from the u-boot.itb FIT image.
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Furthermore if variable $fdtfile has not been saved in the environment it is
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set based on the product ID to *starfive/jh7110-deepcomputing-fml13v01.dtb*.
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To overrule this default the variable can be set manually and saved in the
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environment
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.. code-block:: console
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setenv fdtfile my_device-tree.dtb
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env save
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Power switch
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------------
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A tiny power switch is located in right upper corner of the board.
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Open case detection
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-------------------
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The board has an open case detection switch. Red lights will flash and the
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board will not boot if the switch is not held down.
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UART
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----
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UART 0 is exposed via the side channel contacts SBU1 and SBU2 of the lower,
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right USB C connector. A USB C cable and a breakout board are needed for
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physical access. It depends on the cable orientation on which of SBU1 and SBU2
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you will find RX and TX. The signal voltage is 3.3 V. The baud rate is 115200.
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.. include:: jh7110_common.rst
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