Den 04.08.2016 16:15, skrev Luc Verhaegen:
On Thu, Aug 04, 2016 at 04:03:18PM +0200, Noralf Trønnes wrote:
I have tested simpledrm on a Raspberry Pi B+ with U-boot setting up the framebuffer and producing this node:
framebuffer@1e887000 { compatible = "simple-framebuffer"; reg = <0x1e887000 0x36c600>; format = "r5g6b5"; width = <1824>; height = <984>; stride = <3648>; status = "okay"; };I have only tested with fbcon and modetest (XR24,RG16).
Please do not make the same mistake as simplefb in making this purely a rpifb. Know that you will need some power and clock management for properly free devices that do not depend on a binary only RTOS which does _everything_ behind our backs.
I didn't read the binding document[1], which I should have done. If simpledrm claims to be compatible with simple-framebuffer I assume it should support the entire binding doc which includes clocks, regulators and having the node under /chosen. I will lift the necessary code from simplefb.c and put it in the next version.
The binding doc also mentions an optional display phandle property, but I can't find any reference to this in simplefb.c.
Noralf.
[1] Documentation/devicetree/bindings/display/simple-framebuffer.txt