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01995c5bc5
See: https://github.com/raspberrypi/linux/issues/4446 The formula that determines the core clock requirement based on pixel clock and blanking has been determined experimentally to minimise the clock while supporting all modes we've seen. A new reduced blanking mode (4kp60 at 533MHz rather than the standard 594MHz) has been seen that doesn't produce a high enough clock and results in "flip_done timed out" error. Increase the setup cost in the formula to make this work. The result is a reduced blanking mode increases by up to 7MHz while leaving the standard timing mode untouched Signed-off-by: Dom Cobley <popcornmix@gmail.com>