bridge: Elaborate a bit on dumb VGA bridges in Kconfig

It's better if we explain a bit that this pertains to
non-programmable VGA DAC bridges.

Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20180302091426.8463-1-linus.walleij@linaro.org

diff --git a/drivers/gpu/drm/bridge/Kconfig b/drivers/gpu/drm/bridge/Kconfig
index 3b99d5a06c16965d66a8792a4c931f2d9efc4da9..3aa65bdecb0e80aeb289486d1b705b52e0076856 100644 (file)
--- a/drivers/gpu/drm/bridge/Kconfig
+++ b/drivers/gpu/drm/bridge/Kconfig
@@ -30,7 +30,8 @@ config DRM_DUMB_VGA_DAC
        depends on OF
        select DRM_KMS_HELPER
        help
-         Support for RGB to VGA DAC based bridges
+         Support for non-programmable RGB to VGA DAC bridges, such as ADI
+         ADV7123, TI THS8134 and THS8135 or passive resistor ladder DACs.
 
 config DRM_LVDS_ENCODER
        tristate "Transparent parallel to LVDS encoder support"