On Sun, Sep 23, 2012 at 07:27:41PM +0200, Stefano Babic wrote:
I would like to see a handoff of display settings from U-Boot to the kernel, but that's also a tricky thing as long as we're supporting different mechanisms (DT in main-line and kernel parameters in older kernels).
Yes, and a lot of other things. I know Anatolji implemented this behavior for a PPC5121, but we cannot generalize. I agree that the handoff is difficult and not maintainable. My question is different: if the IPU drivers in kernel are compiled as modules, and I will load them only after booting, and the framebuffer's memory is reserved so that the kernel does not touch it, is there still a known reason because the IPU should not run when we boot the kernel? I know this issue with USB, maybe we have now the same with the IPU.
The clock framework disables all unused clocks in a late_initcall. when the IPU is compiled as a module, the IPU clock will be one of those.
Sascha