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