undefined | Better HN

0 pointsneilpanchal5y ago0 comments

Also, its not possible to write your own DSI/MIPI drivers for a phone LCD that you can buy on eBay, partly for not having the DSI/MIPI specification unless you pay upwards of thousands of dollars a year and Raspberry Pi doesn't allow access to the DSI/MIPI HAL layer - its part of the SOC which Broadcom controls.

About the only way to make a device with an LCD is to use the built-in HDMI.

0 comments

2 comments · 2 top-level

stefan_5y ago

Nothing they can do about the specification. There is a DSI driver in the proprietary firmware, but there is also an open-source upstream version:

https://github.com/anholt/linux/wiki/Raspberry-Pi-and-other-...

This is a theme with the RPi. They generally implement new hardware in their proprietary firmware first, for lack of skills/time to do a proper upstream job of it (or the convience of copy-pasting some vendor code), then pay someone to develop an open-source driver. For example, here is a massive 80 patch series nearing merge for the new display pipeline in the RPi 4:

https://patchwork.freedesktop.org/series/73839/

userbinator5y ago

partly for not having the DSI/MIPI specification unless you pay upwards of thousands of dollars a year

There is a little thing called Google... ;-)

j / k navigate · click thread line to collapse