drm/panel: panel-ilitek9881c: Add prepare_upstream_first flag
The panel sends MIPI DCS commands during prepare and is expecting
the bus to remain in LP-11 state in-between.
Set the prepare_upstream_first flag so that the upstream DSI host
is prepared / pre_enabled first, and therefore the bus is in a
defined state.
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
parent
2eeb3b38
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