forked from Minki/linux
efdbd7345f
This is a quite large renaming to consolidate display related bindings into a single "display" directory from various scattered locations of video, drm, gpu, fb, mipi, and panel. The prior location was somewhat based on the Linux driver location, but bindings should be independent of that. Signed-off-by: Rob Herring <robh@kernel.org> Cc: Pawel Moll <pawel.moll@arm.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Ian Campbell <ijc+devicetree@hellion.org.uk> Cc: Kumar Gala <galak@codeaurora.org>
50 lines
2.0 KiB
Plaintext
50 lines
2.0 KiB
Plaintext
* 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 and ssd1307.
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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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