On Thu, Feb 16, 2017 at 02:27:41PM -0800, Steve Longerbeam wrote:
On 02/16/2017 02:20 PM, Russell King - ARM Linux wrote:
On Wed, Feb 15, 2017 at 06:19:02PM -0800, Steve Longerbeam wrote:
In version 4:
With this version, I get:
[28762.892053] imx6-mipi-csi2: LP-11 timeout, phy_state = 0x00000000
[28762.899409] ipu1_csi0: pipeline_set_stream failed with -110
Right, in the imx219, on exit from s_power(), the clock and data lanes
must be placed in the LP-11 state. This has been done in the ov5640 and
tc358743 subdevs.
The only way to do that is to enable streaming from the sensor, wait
an initialisation time, and then disable streaming, and wait for the
current line to finish. There is _no_ other way to get the sensor to
place its clock and data lines into LP-11 state.
For that to happen, we need to program the sensor a bit more than we
currently do at power on (to a minimal resolution, and setting up the
PLLs), and introduce another 4ms on top of the 8ms or so that the
runtime resume function already takes.