On Mon, Oct 19, 2026 at 02:37:41PM -0500, Frank Li wrote: > On Mon, Oct 19, 2026 at 07:17:16AM -0300, Leonardo Costa wrote: > > From: Leonardo Costa <[email protected]> > > > > Add a device tree overlay for the VGA output available on the Apalis > > Evaluation Board, which is driven from a parallel RGB interface passing > > through a non-programmable video DAC to a VGA connector, without VESA > > DDC I2C signals. > > > > The non-programmable video DAC consists of a simple resistor ladder that > > converts the digital 16-bit RGB signal to VGA. The VGA output is gated by > > an active-low data-enable signal. > > > > The overlay is also combined with the various Apalis Evaluation Board > > device trees to provide ready-to-use DTBs. > > > > Signed-off-by: Leonardo Costa <[email protected]> > > --- > > arch/arm/boot/dts/nxp/imx/Makefile | 21 ++++++ > > .../boot/dts/nxp/imx/imx6q-apalis-eval-vga.dtso | 80 > > ++++++++++++++++++++++ > > what's difference with > > https://lore.kernel.org/imx/[email protected]/T/#u > > Is it possible share one dtso also? > > Frank
Hi Frank, The Apalis iMX6 one needs to set up the connection between the IPU the LCD interface (endpoints ipu2_di0_disp0 and vga_display_in), and the Colibri iMX6 one uses a DVI connector instead of a VGA one. Most of all, the bridge on the Colibri iMX6 doesn't have any control signals, while this one on the Apalis iMX6 has an active-low data-enable signal specified on the input endpoint. Because of all of these, the overlay needs to be different between these modules. Best regards, Leonardo
