52 lines
2.1 KiB
Plaintext
52 lines
2.1 KiB
Plaintext
* Solomon SSD1307 Framebuffer Driver
|
|
|
|
Required properties:
|
|
- compatible: Should be "solomon,<chip>fb-<bus>". The only supported bus for
|
|
now is i2c, and the supported chips are ssd1305, ssd1306, ssd1307 and
|
|
ssd1309.
|
|
- reg: Should contain address of the controller on the I2C bus. Most likely
|
|
0x3c or 0x3d
|
|
- pwm: Should contain the pwm to use according to the OF device tree PWM
|
|
specification [0]. Only required for the ssd1307.
|
|
- solomon,height: Height in pixel of the screen driven by the controller
|
|
- solomon,width: Width in pixel of the screen driven by the controller
|
|
- solomon,page-offset: Offset of pages (band of 8 pixels) that the screen is
|
|
mapped to.
|
|
|
|
Optional properties:
|
|
- reset-gpios: The GPIO used to reset the OLED display, if available. See
|
|
Documentation/devicetree/bindings/gpio/gpio.txt for details.
|
|
- vbat-supply: The supply for VBAT
|
|
- solomon,segment-no-remap: Display needs normal (non-inverted) data column
|
|
to segment mapping
|
|
- solomon,com-seq: Display uses sequential COM pin configuration
|
|
- solomon,com-lrremap: Display uses left-right COM pin remap
|
|
- solomon,com-invdir: Display uses inverted COM pin scan direction
|
|
- solomon,com-offset: Number of the COM pin wired to the first display line
|
|
- solomon,prechargep1: Length of deselect period (phase 1) in clock cycles.
|
|
- solomon,prechargep2: Length of precharge period (phase 2) in clock cycles.
|
|
This needs to be the higher, the higher the capacitance
|
|
of the OLED's pixels is
|
|
|
|
[0]: Documentation/devicetree/bindings/pwm/pwm.txt
|
|
|
|
Examples:
|
|
ssd1307: oled@3c {
|
|
compatible = "solomon,ssd1307fb-i2c";
|
|
reg = <0x3c>;
|
|
pwms = <&pwm 4 3000>;
|
|
reset-gpios = <&gpio2 7>;
|
|
reset-active-low;
|
|
};
|
|
|
|
ssd1306: oled@3c {
|
|
compatible = "solomon,ssd1306fb-i2c";
|
|
reg = <0x3c>;
|
|
pwms = <&pwm 4 3000>;
|
|
reset-gpios = <&gpio2 7>;
|
|
reset-active-low;
|
|
solomon,com-lrremap;
|
|
solomon,com-invdir;
|
|
solomon,com-offset = <32>;
|
|
};
|