Interfacing (DSI, CSI, I2C, etc.) • Re: CM4 DSI1 + SN65DSI83 Bridge based display (6.1.x kernel)

Code:

/* * vc4-kms-dsi-ti-sn65dsi83-somepanel-overlay.dts *//dts-v1/;/plugin/;/ {    compatible = "brcm,bcm2835";    /* PWM0 function */    fragment@0 {        target = <&gpio>;        __overlay__ {            pwm_pins: pwm_pins {                brcm,pins = <12>;                brcm,function = <4>;                brcm,pull = <0>;            };        };    };    fragment@1 {        target = <&pwm>;        frag1: __overlay__ {            pinctrl-names = "default";            pinctrl-0 = <&pwm_pins>;            assigned-clock-rates = <100000000>;            status = "okay";        };    };    fragment@2 {        target-path = "/";        __overlay__ {            //#gpio-cells = <2>;            /* Panel backlight through PWM0 on GPIO 12 */            backlight_lvds: backlight {                compatible = "pwm-backlight";                pwms = <&pwm 0 5000000 0>; /* Period of 5000000ns means 200Hz */                brightness-levels = <0  1000>;                num-interpolated-steps = <1000>;                default-brightness-level = <800>;                /* enable-gpios = <&gpio 22 0>; Backlight enable... */            };            panel: panel {                compatible = "panel-lvds";                backlight = <&backlight_lvds>;                /* Physical dimensions of active area */                width-mm = <217>;                height-mm = <136>;                data-mapping = "vesa-24";            panel-timing {                clock-frequency = <66300000 69300000 78900000>;                de-active = <1>;                hactive = <1280 1280 1280>;                hback-porch = <64 64 64>;                hfront-porch = <16 16 16>;                hsync-active = <0>;                hsync-len = <24 24 24>;                pixelclk-active = <1>;                vactive = <800 800 800>;                vback-porch = <24 24 24>;                vfront-porch = <8 8 8>;                vsync-active = <0>;                vsync-len = <8 8 8>;            };                port {                    panel_in_lvds: endpoint {                        remote-endpoint = <&bridge_out>;                    };                };            };        };    };    fragment@3 {        target = <&i2c0if>;        __overlay__ {            #gpio-cells = <2>;            #address-cells = <1>;            #size-cells = <0>;            status = "okay";            bridge@2c {                compatible = "ti,sn65dsi83";                reg = <0x2c>;                enable-gpios = <&gpio 22 1>;                ports {                    #address-cells = <1>;                    #size-cells = <0>;                    port@0 {                        reg = <0>;                        bridge_in: endpoint {                            remote-endpoint = <&dsi_out_port>;                            data-lanes = <0 1 2 3>;                        };                    };                    port@2 {                        reg = <2>;                        bridge_out: endpoint {                            remote-endpoint = <&panel_in_lvds>;                        };                    };                };            };        };    };    fragment@4 {        target = <&dsi1>;        __overlay__ {            #address-cells = <1>;            #size-cells = <0>;            status = "okay";            port {                dsi_out_port: endpoint {                    remote-endpoint = <&bridge_in>;                    data-lanes = <0 1 2 3>;                };            };        };    };    fragment@5 {        target = <&i2c0if>;        __overlay__ {            status = "okay";        };    };    fragment@6 {        target = <&i2c0mux>;        __overlay__ {            status = "okay";        };    };};

Code:

target = <&i2c_csi_dsi>; 

Code:

target = <&i2c0if>;

Code:

dtparam=i2c_vc=on

Code:

            bridge@2c {                compatible = "ti,sn65dsi83";                reg = <0x2c>;                enable-gpios = <&gpio 22 0>;