Is there support for DPI LCD displays with HAT? #474
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More specifically, is there any support for displays like this with an RGB LCD HAT? |
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Replies: 1 comment 6 replies
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I'm unsure. I tend to say, it does not work, because it needs device-tree overlays. It will not work with the Raspberry Pi 5 in any case. |
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So there's a very slim chance it would properly work on a RPI4B? |
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I did more reading and unfortunately now I think, it will not work. Circle totally relies on the firmware for HDMI and DSI display support. After reading this I assume, there is no DPI support in the firmware and hence, it won't work. Newer Raspberry Pi OS versions use kernel mode drivers for display support (not the firmware), but such a driver is not available for Circle. |
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So my only option left is to make my own driver? (which I assume is definitely not gonna be easy) |
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No, it's not easy. The Raspberry Pi OS kernel mode display support is here. This can be of interest too. |
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Well if I ever get to around doing it and I manage it, I'll try to make a PR. |
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Yes, it's difficult. But if you manage it, I'm looking forward to your PR. |
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I did more reading and unfortunately now I think, it will not work. Circle totally relies on the firmware for HDMI and DSI display support. After reading this I assume, there is no DPI support in the firmware and hence, it won't work. Newer Raspberry Pi OS versions use kernel mode drivers for display support (not the firmware), but such a driver is not available for Circle.