projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| a2ed00da MR |
1 | * Solomon SSD1307 Framebuffer Driver |
| 2 | ||
| 3 | Required properties: | |
| bbc79089 | 4 | - compatible: Should be "solomon,<chip>fb-<bus>". The only supported bus for |
| 3ac58d58 OS |
5 | now is i2c, and the supported chips are ssd1305, ssd1306, ssd1307 and |
| 6 | ssd1309. | |
| a2ed00da MR |
7 | - reg: Should contain address of the controller on the I2C bus. Most likely |
| 8 | 0x3c or 0x3d | |
| 9 | - pwm: Should contain the pwm to use according to the OF device tree PWM | |
| bbc79089 | 10 | specification [0]. Only required for the ssd1307. |
| a2ed00da | 11 | - reset-gpios: Should contain the GPIO used to reset the OLED display |
| bbc79089 MR |
12 | - solomon,height: Height in pixel of the screen driven by the controller |
| 13 | - solomon,width: Width in pixel of the screen driven by the controller | |
| 14 | - solomon,page-offset: Offset of pages (band of 8 pixels) that the screen is | |
| 15 | mapped to. | |
| a2ed00da MR |
16 | |
| 17 | Optional properties: | |
| 18 | - reset-active-low: Is the reset gpio is active on physical low? | |
| c89eacfc TN |
19 | - solomon,segment-no-remap: Display needs normal (non-inverted) data column |
| 20 | to segment mapping | |
| 21 | - solomon,com-seq: Display uses sequential COM pin configuration | |
| 22 | - solomon,com-lrremap: Display uses left-right COM pin remap | |
| 23 | - solomon,com-invdir: Display uses inverted COM pin scan direction | |
| 24 | - solomon,com-offset: Number of the COM pin wired to the first display line | |
| 25 | - solomon,prechargep1: Length of deselect period (phase 1) in clock cycles. | |
| 26 | - solomon,prechargep2: Length of precharge period (phase 2) in clock cycles. | |
| 27 | This needs to be the higher, the higher the capacitance | |
| 28 | of the OLED's pixels is | |
| a2ed00da MR |
29 | |
| 30 | [0]: Documentation/devicetree/bindings/pwm/pwm.txt | |
| 31 | ||
| 32 | Examples: | |
| 33 | ssd1307: oled@3c { | |
| 34 | compatible = "solomon,ssd1307fb-i2c"; | |
| 35 | reg = <0x3c>; | |
| 36 | pwms = <&pwm 4 3000>; | |
| 37 | reset-gpios = <&gpio2 7>; | |
| 38 | reset-active-low; | |
| 39 | }; | |
| c89eacfc TN |
40 | |
| 41 | ssd1306: oled@3c { | |
| 42 | compatible = "solomon,ssd1306fb-i2c"; | |
| 43 | reg = <0x3c>; | |
| 44 | pwms = <&pwm 4 3000>; | |
| 45 | reset-gpios = <&gpio2 7>; | |
| 46 | reset-active-low; | |
| 47 | solomon,com-lrremap; | |
| 48 | solomon,com-invdir; | |
| 49 | solomon,com-offset = <32>; | |
| 50 | }; |