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Each data lane on a CSI-2 C-PHY bus uses three phase encoding and is constructed from three physical wires. The wires are referred to as A, B and C and their default order is ABC. However to ease hardware design the specification allows for the wires to be switched in any order. Add a vendor neutral property to describe the line order used. The property name 'line-orders', the possible values it can be assigned and there names are taken from the MIPI Discovery and Configuration (DisCo) Specification for Imaging. Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> Reviewed-by: Rob Herring (Arm) <robh@kernel.org> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>