| .. SPDX-License-Identifier: GPL-2.0-or-later |
| |
| DeepComputing Framework Motherboard (FLM13V01) |
| ============================================== |
| |
| The DeepComputing Framework motherboard (FLM13V01) can be combined with a |
| 13 inch Framework laptop chassis to provide a complete laptop. |
| |
| U-Boot for the board uses the same binaries as the VisionFive 2 board. |
| Currently only serial console output is supported by mainline U-Boot. |
| |
| Device-tree selection |
| --------------------- |
| |
| The product ID stored in the board EEPROM is used by U-Boot SPL to select the |
| right configuration and device-tree from the u-boot.itb FIT image. |
| |
| Furthermore if variable $fdtfile has not been saved in the environment it is |
| set based on the product ID to *starfive/jh7110-deepcomputing-fml13v01.dtb*. |
| |
| To overrule this default the variable can be set manually and saved in the |
| environment |
| |
| .. code-block:: console |
| |
| setenv fdtfile my_device-tree.dtb |
| env save |
| |
| Power switch |
| ------------ |
| |
| A tiny power switch is located in right upper corner of the board. |
| |
| Open case detection |
| ------------------- |
| |
| The board has an open case detection switch. Red lights will flash and the |
| board will not boot if the switch is not held down. |
| |
| UART |
| ---- |
| |
| UART 0 is exposed via the side channel contacts SBU1 and SBU2 of the lower, |
| right USB C connector. A USB C cable and a breakout board are needed for |
| physical access. It depends on the cable orientation on which of SBU1 and SBU2 |
| you will find RX and TX. The signal voltage is 3.3 V. The baud rate is 115200. |
| |
| .. include:: jh7110_common.rst |
