On Mon, Dec 07, 2020 at 10:44:46PM -0600, Bjorn Andersson wrote: > Some bridge chips, such as the TI SN65DSI86 DSI/eDP bridge, provides > means of generating a PWM signal for backlight control of the attached > panel. The provided PWM chip is typically controlled by the > pwm-backlight driver, which if tied to the panel will provide DPMS. > > But with the current implementation the panel will refuse to probe > because the bridge driver has yet to probe and register the PWM chip, > and the bridge driver will refuse to probe because it's unable to find > the panel. What you're describing is basically a circular dependency. Can't we get rid of that in some other way? Why exactly does the bridge driver refuse to probe if the panel can't be found? In other words, I see how the bridge would /use/ the panel in that it forward a video stream to it. But how does the panel /use/ the bridge? Thierry
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