Device-Tree

Most LCD/TFT display datasheets provide the following timing information:

Horizontal Back Porch (HBP): Number of pixel clk pulses between HSYNC signal and the first valid pixel data.
Horizontal Front Porch (HFP): Number of pixel clk pulses between the last valid pixel data in the line and the next hsync pulse.
Vertical Back Porch (VBP): Number of lines (HSYNC pulses) from a VSYNC signal to the first valid line.
Vertical Front Porch (VFP): Number of lines (HSYNC pulses) between the last valid line of the frame and the next VSYNC pulse.
VSYNC pulse width: Number of HSYNC pulses when a VSYNC signal is active.
HSYNC pulse width: Number of pixel clk pulses when a HSYNC signal is active.
Active frame width: Horizontal resolution.
Active frame height: Vertical resolution.
Screen width: Active frame width + HBP + HFP
Screen height: Active frame height + VBP + VFP
VSYNC polarity: Value of VSYNC to indicate the start of a new frame (active LOW or HIGH)
HSYNC polarity: Value of HSYNC to indicate the start of a new line (active LOW or HIGH)

Some datasheets provide horizontal and vertical blanking period instead:

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