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Diffstat (limited to 'Documentation/devicetree/bindings/auxdisplay/hit,hd44780.txt')
-rw-r--r-- | Documentation/devicetree/bindings/auxdisplay/hit,hd44780.txt | 45 |
1 files changed, 0 insertions, 45 deletions
diff --git a/Documentation/devicetree/bindings/auxdisplay/hit,hd44780.txt b/Documentation/devicetree/bindings/auxdisplay/hit,hd44780.txt deleted file mode 100644 index 2aa24b889923..000000000000 --- a/Documentation/devicetree/bindings/auxdisplay/hit,hd44780.txt +++ /dev/null @@ -1,45 +0,0 @@ -DT bindings for the Hitachi HD44780 Character LCD Controller - -The Hitachi HD44780 Character LCD Controller is commonly used on character LCDs -that can display one or more lines of text. It exposes an M6800 bus interface, -which can be used in either 4-bit or 8-bit mode. - -Required properties: - - compatible: Must contain "hit,hd44780", - - data-gpios: Must contain an array of either 4 or 8 GPIO specifiers, - referring to the GPIO pins connected to the data signal lines DB0-DB7 - (8-bit mode) or DB4-DB7 (4-bit mode) of the LCD Controller's bus interface, - - enable-gpios: Must contain a GPIO specifier, referring to the GPIO pin - connected to the "E" (Enable) signal line of the LCD Controller's bus - interface, - - rs-gpios: Must contain a GPIO specifier, referring to the GPIO pin - connected to the "RS" (Register Select) signal line of the LCD Controller's - bus interface, - - display-height-chars: Height of the display, in character cells, - - display-width-chars: Width of the display, in character cells. - -Optional properties: - - rw-gpios: Must contain a GPIO specifier, referring to the GPIO pin - connected to the "RW" (Read/Write) signal line of the LCD Controller's bus - interface, - - backlight-gpios: Must contain a GPIO specifier, referring to the GPIO pin - used for enabling the LCD's backlight, - - internal-buffer-width: Internal buffer width (default is 40 for displays - with 1 or 2 lines, and display-width-chars for displays with more than 2 - lines). - -Example: - - auxdisplay { - compatible = "hit,hd44780"; - - data-gpios = <&hc595 0 GPIO_ACTIVE_HIGH>, - <&hc595 1 GPIO_ACTIVE_HIGH>, - <&hc595 2 GPIO_ACTIVE_HIGH>, - <&hc595 3 GPIO_ACTIVE_HIGH>; - enable-gpios = <&hc595 4 GPIO_ACTIVE_HIGH>; - rs-gpios = <&hc595 5 GPIO_ACTIVE_HIGH>; - - display-height-chars = <2>; - display-width-chars = <16>; - }; |