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The MIPI I3C HCI (Host Controller Interface) specification defines a common software driver interface to support compliant MIPI I3C host controller hardware implementations from multiple vendors. All that is needed is an I/O area and an interrupt signal;. The hardware is self-advertising wrt its implementor and implemented capabilities so there is currently no details that the driver can't figure out on its own. Signed-off-by: Nicolas Pitre <npitre@baylibre.com> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com> Link: https://lore.kernel.org/linux-i3c/20201111220510.3622216-2-nico@fluxnic.net