| * 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. |
| - reset-gpios: Should contain the GPIO used to reset the OLED display |
| - 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-active-low: Is the reset gpio is active on physical low? |
| - 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>; |
| }; |
