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How to configure ipu1 and ipu2 with different clocks

Question asked by Amir Eilam on Feb 28, 2019
Latest reply on Feb 28, 2019 by igorpadykov


On imx6q, I need to configure two IPU units.

ipu1 is connected to HDMI (full HD) (148500000 hz pixel clock)

ipu2 is connected to mipi_dsi (480x800) (28278000 hz pixel clock) (taking porch+sync values into consideration)


The problem is that in the default device tree, both ipu units use the same pixel clock and divider, so when I configure a screen, the 2nd one gets misconfigured.

currently both IPUs point to the same clock, I need to configure alternative clocks for one of the IPUs.

Any suggestions on how to approach this?