The sharp panel code uses the backlight interface to find a device, which fails when backlight is disabled:
drivers/built-in.o: In function `sharp_panel_probe': :(.text+0x5ceac): undefined reference to `of_find_backlight_by_node'
Signed-off-by: Arnd Bergmann arnd@arndb.de --- drivers/gpu/drm/panel/Kconfig | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig index 024e98ef8e4d..84506053a7ca 100644 --- a/drivers/gpu/drm/panel/Kconfig +++ b/drivers/gpu/drm/panel/Kconfig @@ -31,6 +31,7 @@ config DRM_PANEL_SHARP_LQ101R1SX01 tristate "Sharp LQ101R1SX01 panel" depends on OF depends on DRM_MIPI_DSI + depends on BACKLIGHT_CLASS_DEVICE help Say Y here if you want to enable support for Sharp LQ101R1SX01 TFT-LCD modules. The panel has a 2560x1600 resolution and uses