| Message ID | 20180227101200.6173-1-linus.walleij@linaro.org |
|---|---|
| State | Superseded |
| Headers | show |
| Series | bridge: Elaborate a bit on dumb VGA bridges in Kconfig | expand |
Hi Linus, Thank you for the patch. On Tuesday, 27 February 2018 12:12:00 EET Linus Walleij wrote: > It's better if we explain a bit that this pertains to > passive VGA DAC bridges. > > Signed-off-by: Linus Walleij <linus.walleij@linaro.org> > --- > drivers/gpu/drm/bridge/Kconfig | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/drivers/gpu/drm/bridge/Kconfig b/drivers/gpu/drm/bridge/Kconfig > index 3b99d5a06c16..7cee8f291e7f 100644 > --- 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 passive RGB to VGA DAC based bridges such > + as ADI ADV7123 or TI THS8134 and THS8135. Strictly speaking none of those components are passive: https:// en.wikipedia.org/wiki/Electronic_component#Passive_components. Only the VGA DACs based on resistor ladders (such as the one Maxime initially developed this driver for, see https://en.wikipedia.org/wiki/Resistor_ladder#R %E2%80%932R_resistor_ladder_network_(digital_to_analog_conversion)) can be considered passive devices. > config DRM_LVDS_ENCODER > tristate "Transparent parallel to LVDS encoder support"
diff --git a/drivers/gpu/drm/bridge/Kconfig b/drivers/gpu/drm/bridge/Kconfig index 3b99d5a06c16..7cee8f291e7f 100644 --- 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 passive RGB to VGA DAC based bridges such + as ADI ADV7123 or TI THS8134 and THS8135. config DRM_LVDS_ENCODER tristate "Transparent parallel to LVDS encoder support"
It's better if we explain a bit that this pertains to passive VGA DAC bridges. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> --- drivers/gpu/drm/bridge/Kconfig | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)