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In the case where HDM decoder register block exists but is not programmed and at the same time the DVSEC range register range is active, populate the CXL decoder object 'cxl_decoder' with info from DVSEC range registers. Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Signed-off-by: Dave Jiang <dave.jiang@intel.com> Link: https://lore.kernel.org/r/167640368454.935665.13806415120298330717.stgit@dwillia2-xfh.jf.intel.com Signed-off-by: Dan Williams <dan.j.williams@intel.com>