Extern or forward variable declaration at include/video/of_display_timing.h, line 13 References: drivers/gpu/drm/tilcdc/tilcdc_panel.c, line 23 drivers/gpu/drm/tilcdc/tilcdc_panel.c, line 139 drivers/video/fbdev/pxafb.c, line 2123 drivers/video/fbdev/vt8500lcdfb.c, line 269 drivers/video/fbdev/wm8505fb.c, line 259 drivers/video/of_display_timing.c, line 140 drivers/video/of_display_timing.c, line 145 drivers/video/of_videomode.c, line 33 include/video/of_display_timing.h, line 13 include/video/of_display_timing.h, line 20 include/video/of_display_timing.h, line 27