drivers/built-in.o: In function `omapdss_hdmi_display_check_timing':
hsi_driver_debugfs.c:(.text+0x2c9e0): undefined reference to `omapfb_dss2fb_timings'
drivers/built-in.o: In function `omapdss_hdmi_display_set_timing':
hsi_driver_debugfs.c:(.text+0x2cacc): undefined reference to `omapfb_dss2fb_timings'
drivers/built-in.o: In function `omapdss_hdmi_display_enable':
hsi_driver_debugfs.c:(.text+0x2cc14): undefined reference to `omapfb_fb2dss_timings'
drivers/built-in.o: In function `hdmi_ti_4xxx_basic_configure':
hsi_driver_debugfs.c:(.text+0x33094): undefined reference to `omapfb_fb2dss_timings'