On 10/17/2016 08:57 AM, Mark yao wrote:
On 2016年10月16日 02:03, ayaka wrote:
   I meet a problem with eDP in rk3288 with the linux next 20161006,
it is just like the early stage of 4.4
kernel.  I have added a eDP panel entry in the firefly reload board,
once the kernel loaded analogix_dp-rockchip.ko, after printed the
following two lines, the kernel stop working.
rockchip-drm display-subsystem: bound ff940000.vop (ops
vop_component_ops [rockchipdrm])
rockchip-drm display-subsystem: bound ff930000.vop (ops
vop_component_ops [rockchipdrm])

Hi ayaka

This log seems no problem.
I found the problem, it is the eDP_AVDD_1V0 and eDP_AVDD_1V8 must have a proper power supply. I would submit a patch to enable the regulator at DP driver.

How about tested it with build-in? we had test it with build-in.

Maybe this patch can help you, you can have a try.


In the early June of the 4.4 kernel, I meet the same problem with
rk3288 evb board with different error message, I have to disable the
display system that time.
  In the today test, I meet the same problem with rk3399 evb board in
  I have no idea what caused that, and it is a little hard to debug as
kernel still would never kill that task.
                                                            Randy Li

Randy Li
The third produce department
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