On 2022/2/14 13:54, Jiaxun Yang wrote:
在 2022/2/13 14:16, Sui Jingfeng 写道:
There is a display controller in loongson's LS2K1000 SoC and LS7A1000
bridge chip, the DC is a PCI device in those chips. It has two display
pipes but with only one hardware cursor. Each way has a DVO interface
which provide RGB888 signals, vertical & horizontal synchronisations,
data enable and the pixel clock. Each CRTC is able to scanout from
1920x1080 resolution at 60Hz. The maxmium resolution is 2048x2048
according to the hardware spec.
Hi Jiangfeng,
I see you added dts for those boards, but I didn't see you wire up them
in Makefile and code? How can you use them in present systems?
I guess to make those dts work for general all-in-one kernel, what you
need to do is, for example Lemota A1901:
1. Add __dtb_lemote_a1901 to builtin_dtbs.h
2. Wire up with something like:
if (!strcmp("LEMOTE-/LS3A4000/-7A1000-1w-V01-pc", eboard->name)
loongson_fdt_blob = __dtb_lemote_a1901
In arch/mips/loongson64/env.c.
Thanks.
- Jiaxun
For most board, this driver is ready to be use out of box.
Device tree is for supplement purpose.
