13:52 <lucaceresoli> hi, I'm back on the project to implement a mainline parallel video capture driver for Tegra20

13:53 <lucaceresoli> now I apparenly have everything wet up correctly (including pinmux, clocks etc), the sensor produces valid signals,

13:54 <lucaceresoli> and the VI hardware is apparently configured correctly, but I never receive a syncpt event report a completed frame

13:55 <lucaceresoli> I'm wondering whether there is any _documented_ status register in the VI that could tell me which error condition I'm in

13:57 <lucaceresoli> The old driver that I started from (https://github.com/SKIDATA/linux/blob/l4t-3.1.y/drivers/media/video/tegra_v4l2_camera.c) #defines some status registers, but bits are not defined and those registers are not used by that driver, thus that is quite useless

14:04 <digetx> if you don't get a captured video frame, then VI doesn't work; if you get a captured frame despite timed out sync point, then it's a different problem

14:23 <lucaceresoli> digetx: good point: indeed I don't receive a video frame. host1x_syncpt_wait() exits for timeout, and the buffer is all zero

14:24 <lucaceresoli> (or all 0x55 if I use 'yavta --fill-frames')