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README: additional notes

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Daniel Fullmer 2020-10-27 20:30:37 -07:00
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README.md
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# NixOS on Pinecube (Early work in progress)
Build an SD card image with `./build.sh`.
Prebuilt image [here](https://drive.google.com/file/d/1n8JHk7dfFQIfJX9KqxsTB1Dp_X8N-nVc/view?usp=sharing). (updated 2020-10-27)
Prebuilt image [here](https://drive.google.com/file/d/1n8JHk7dfFQIfJX9KqxsTB1Dp_X8N-nVc/view?usp=sharing) (last updated 2020-10-27).
Decompress and flash with:
```shell
$ cat ./result/sd-image/nixos-sd-image-21.03pre-git-armv7l-linux.img.zst | zstd -d | dd of=/dev/sdX bs=1024
@ -83,12 +83,16 @@ Then, I could boot into u-boot and erase the SPI, returning the Pinecube to fact
## Ethernet
Working fine in linux, and now also u-boot with patch derived from: https://lists.denx.de/pipermail/u-boot/2020-May/413924.html
S3 datasheet says it supports up to 1000Mbit, but we only have a 100Mbit PHY: `H1601CG`
Maybe this is for easier PoE support?
## USB
Not working in linux or u-boot
Not working in linux or u-boot.
dmesg reports: `supply vcc not found, using dummy regulator`
## WIFI
`iwlist wlan0 scan` worked fine.
Stopped working after starting `wpa_supplicant`.
Dmesg errors:
```
Oct 19 06:11:31 nixos wpa_supplicant[926]: Successfully initialized wpa_supplicant