openrisc: dts: Add de0 nano config and devicetree

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The de0 nano from Terasic is an FPGA board that we use in the OpenRISC
community to test OpenRISC configurations.  Add a base configuration for
the board that runs an OpenRISC CPU at 50Mhz with 32MB ram, UART for
console and some GPIOs for LEDs and switches.

There is an older version of this floating around that defines all of
the hardware on the board including SPI's, flash devices, sram, ADCs
etc.  Eventually it would be good to get the full version upstream
but for now I think a minimal board is good to start with.

Link: https://openrisc.io/tutorials/de0_nano/
Link: https://github.com/olofk/de0_nano

Signed-off-by: Stafford Horne <shorne@gmail.com>

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Stafford Horne 2025-09-07 14:19:33 +01:00

parent 0f61b1860c

commit 111005cafb

3 changed files with 175 additions and 0 deletions

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42

arch/openrisc/boot/dts/de0-nano-common.dtsi

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54

arch/openrisc/boot/dts/de0-nano.dts

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79

arch/openrisc/configs/de0_nano_defconfig

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