On Thu, May 16, 2019 at 06:48:59PM +0200, Torsten Duwe wrote: > On Thu, May 16, 2019 at 09:06:41AM -0700, Vasily Khoruzhick wrote: > > > > Driver can talk to the panel over AUX channel only after t1+t3, t1 is > > up to 10ms, t3 is up to 200ms. > > This is after power-on. The boot loader needs to deal with this. The bootloader can deal with it, but the kernel will also need to. The bootloader might not be doing this because it's not been updated, the regulator might have been disabled between the time the kernel was started and the time the bridge driver probes, etc. Maxime -- Maxime Ripard, Bootlin Embedded Linux and Kernel engineering https://bootlin.com
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