[00:45]

While I've spent most of today computing my options for the #T^2 TyMist [gd0138], I started to have concern for the methods of controlling the OLED for this project too. I found these relevant projects:

• https://hackaday.io/project/364-mipi-dsi-display-shieldhdmi-adapter
• https://github.com/ylj2000/HDMI_To_MIPI
• https://github.com/peng-zhihui/HDMI-PI

I also don't think I'm going to be able to squeeze and fold over the ready-to-go driver.

The board uses the TC358870XBG Toshiba chip, but it's a dense BGA so manufacture could get a bit difficult.

Remembering that the CM4 supports DSI where the CB1 doesn't, I went to investigate futher:

Using this calculator, the bandwidth needed for 90Hz is between 2.8 and 3Gbps, so it should be a case of wiring things up and writing some drivers... not like I've ever written drivers (and in Linux no less) before. Speaking of Linux, I have been looking around to see how involved it could be to spin up -- but more importantly, maintain -- a custom distro, but this distro's changelog seems managable and this distro was apparently made as a side project, so maybe I'll manage. I've been interested in Powerpoint OSes since about 10 years ago, so I've had a feeling that there would be one reason or another that Future Me would make an actual OS [skin / distro] one day. Anyway, I might want to read up on content like this log to see what goes into driver dev.

I'd have to start looking into alternatives to the CM4 if I don't want to pay inflated prices for one. Last time I checked, I heard that the backlog for stock was going to be sometime mid 2023 soooo not sure about that one. Considering that I'm likely going to have the Timespy as unofficial #Teti [gd0022] and #T^2 TyMist [gd0138] controllers, it might make sense to have a basic edition that uses an SPI/I2C display (and perhaps runs off #Tetrinsic [gd0041] / the M032 series microcontroller). I'm still eyeing that 2.7" Sharp display, even if it's more expensive than I'd like: