ssd1331-spi-overlay.dts

/*
 * Device Tree overlay for SSD1331 based SPI OLED display
 *
 */

/dts-v1/;
/plugin/;

/ {
        compatible = "brcm,bcm2835";

        fragment@0 {
                target = <&spi0>;
                __overlay__ {
                        status = "okay";
                };
        };

        fragment@1 {
                target = <&spidev0>;
                __overlay__ {
                        status = "disabled";
                };
        };

        fragment@2 {
                target = <&spidev1>;
                __overlay__ {
                        status = "disabled";
                };
        };

        fragment@3 {
                target = <&gpio>;
                __overlay__ {
                        ssd1331_pins: ssd1331_pins {
                                brcm,pins = <25 24>;
                                brcm,function = <1 1>; /* out out */
                        };
                };
        };

        fragment@4 {
                target = <&spi0>;
                __overlay__ {
                        /* needed to avoid dtc warning */
                        #address-cells = <1>;
                        #size-cells = <0>;

                        ssd1331: ssd1331@0{
                                compatible = "solomon,ssd1331";
                                reg = <0>;
                                pinctrl-names = "default";
                                pinctrl-0 = <&ssd1331_pins>;

                                spi-max-frequency = <4500000>;
                                bgr = <0>;
                                bpp = <16>;
                                rotate = <0>;
                                fps = <25>;
                                buswidth = <8>;
                                reset-gpios = <&gpio 25 1>;
                                dc-gpios = <&gpio 24 0>;
                                debug = <0>;

                                solomon,height = <64>;
                                solomon,width = <96>;
                                solomon,page-offset = <0>;
                        };
                };
        };

        __overrides__ {
                speed     = <&ssd1331>,"spi-max-frequency:0";
                rotate    = <&ssd1331>,"rotate:0";
                fps       = <&ssd1331>,"fps:0";
                debug     = <&ssd1331>,"debug:0";
                dc_pin    = <&ssd1331>,"dc-gpios:4",
                            <&ssd1331_pins>,"brcm,pins:4";
                reset_pin = <&ssd1331>,"reset-gpios:4",
                            <&ssd1331_pins>,"brcm,pins:0";
        };
};