xref: /freebsd-src/sys/contrib/device-tree/Bindings/auxdisplay/img-ascii-lcd.txt (revision c66ec88fed842fbaad62c30d510644ceb7bd2d71)
1*c66ec88fSEmmanuel VadotBinding for ASCII LCD displays on Imagination Technologies boards
2*c66ec88fSEmmanuel Vadot
3*c66ec88fSEmmanuel VadotRequired properties:
4*c66ec88fSEmmanuel Vadot- compatible : should be one of:
5*c66ec88fSEmmanuel Vadot    "img,boston-lcd"
6*c66ec88fSEmmanuel Vadot    "mti,malta-lcd"
7*c66ec88fSEmmanuel Vadot    "mti,sead3-lcd"
8*c66ec88fSEmmanuel Vadot
9*c66ec88fSEmmanuel VadotRequired properties for "img,boston-lcd":
10*c66ec88fSEmmanuel Vadot- reg : memory region locating the device registers
11*c66ec88fSEmmanuel Vadot
12*c66ec88fSEmmanuel VadotRequired properties for "mti,malta-lcd" or "mti,sead3-lcd":
13*c66ec88fSEmmanuel Vadot- regmap: phandle of the system controller containing the LCD registers
14*c66ec88fSEmmanuel Vadot- offset: offset in bytes to the LCD registers within the system controller
15*c66ec88fSEmmanuel Vadot
16*c66ec88fSEmmanuel VadotThe layout of the registers & properties of the display are determined
17*c66ec88fSEmmanuel Vadotfrom the compatible string, making this binding somewhat trivial.
18