drm/imx: parallel-display: allow to determine bus format from the connected panel
Similarly to commit 5e501ed7 ("drm/imx: imx-ldb: allow to determine bus format from the connected panel"), if a panel is connected to the ldb output port via the of_graph bindings, the data mapping is determined from the display_info.bus_format field provided by the panel instead of from the optional interface_pix_fmt device tree property. Reported-by: Ulrich Ölmann <u.oelmann@pengutronix.de> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Tested-by: Gary Bisson <gary.bisson@boundarydevices.com>
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