diff --git a/raspberry-pi/4/default.nix b/raspberry-pi/4/default.nix
index d50325a..d9f5f9b 100644
--- a/raspberry-pi/4/default.nix
+++ b/raspberry-pi/4/default.nix
@@ -4,6 +4,7 @@
   imports = [
     ./dwc2.nix
     ./modesetting.nix
+    ./tc358743.nix
   ];
 
   boot = {
diff --git a/raspberry-pi/4/tc358743.nix b/raspberry-pi/4/tc358743.nix
new file mode 100644
index 0000000..840953a
--- /dev/null
+++ b/raspberry-pi/4/tc358743.nix
@@ -0,0 +1,211 @@
+{ config, lib, ... }:
+
+let
+  cfg = config.hardware.raspberry-pi."4".tc358743;
+in
+{
+  options.hardware = {
+    raspberry-pi."4".tc358743 = {
+      enable = lib.mkEnableOption ''
+        Enable support for the Toshiba TC358743 HDMI-to-CSI-2 converter.
+
+        This can be tested with a plugged in converter device and for example
+        running ustreamer (which starts webservice providing a camera stream):
+        ''${pkgs.ustreamer}/bin/ustreamer --persistent --dv-timings
+      '';
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    hardware.deviceTree.overlays = [
+      {
+        name = "tc358743-overlay";
+        dtsText = ''
+          /dts-v1/;
+
+          / {
+            compatible = "brcm,bcm2711";
+
+            fragment@0 {
+              target = <0xffffffff>;
+
+              __overlay__ {
+                #address-cells = <0x01>;
+                #size-cells = <0x00>;
+                status = "okay";
+
+                tc358743@0f {
+                  compatible = "toshiba,tc358743";
+                  reg = <0x0f>;
+                  status = "okay";
+                  clocks = <0x01>;
+                  clock-names = "refclk";
+
+                  port {
+
+                    endpoint {
+                      remote-endpoint = <0x02>;
+                      clock-lanes = <0x00>;
+                      clock-noncontinuous;
+                      link-frequencies = <0x00 0x1cf7c580>;
+                      phandle = <0x03>;
+                    };
+                  };
+                };
+              };
+            };
+
+            fragment@1 {
+              target = <0xffffffff>;
+
+              __overlay__ {
+                status = "okay";
+
+                port {
+
+                  endpoint {
+                    remote-endpoint = <0x03>;
+                    phandle = <0x02>;
+                  };
+                };
+              };
+            };
+
+            fragment@2 {
+              target = <0x03>;
+
+              __overlay__ {
+                data-lanes = <0x01 0x02>;
+              };
+            };
+
+            fragment@3 {
+              target = <0x03>;
+
+              __dormant__ {
+                data-lanes = <0x01 0x02 0x03 0x04>;
+              };
+            };
+
+            fragment@4 {
+              target = <0xffffffff>;
+
+              __overlay__ {
+                status = "okay";
+              };
+            };
+
+            fragment@5 {
+              target = <0xffffffff>;
+
+              __overlay__ {
+                status = "okay";
+              };
+            };
+
+            fragment@6 {
+              target-path = [2f 00];
+
+              __overlay__ {
+
+                bridge-clk {
+                  compatible = "fixed-clock";
+                  #clock-cells = <0x00>;
+                  clock-frequency = <0x19bfcc0>;
+                  phandle = <0x01>;
+                };
+              };
+            };
+
+            fragment@7 {
+              target = <0x02>;
+
+              __overlay__ {
+                data-lanes = <0x01 0x02>;
+              };
+            };
+
+            fragment@8 {
+              target = <0x02>;
+
+              __dormant__ {
+                data-lanes = <0x01 0x02 0x03 0x04>;
+              };
+            };
+
+            __overrides__ {
+              4lane = "\0\0\0\0-2+3-7+8";
+              link-frequency = [00 00 00 03 6c 69 6e 6b 2d 66 72 65 71 75 65 6e 63 69 65 73 23 30 00];
+            };
+
+            __symbols__ {
+              tc358743 = "/fragment@0/__overlay__/tc358743@0f/port/endpoint";
+              csi1_ep = "/fragment@1/__overlay__/port/endpoint";
+              tc358743_clk = "/fragment@6/__overlay__/bridge-clk";
+            };
+
+            __fixups__ {
+              i2c_csi_dsi = "/fragment@0:target:0";
+              csi1 = "/fragment@1:target:0";
+              i2c0if = "/fragment@4:target:0";
+              i2c0mux = "/fragment@5:target:0";
+            };
+
+            __local_fixups__ {
+
+              fragment@0 {
+
+                __overlay__ {
+
+                  tc358743@0f {
+                    clocks = <0x00>;
+
+                    port {
+
+                      endpoint {
+                        remote-endpoint = <0x00>;
+                      };
+                    };
+                  };
+                };
+              };
+
+              fragment@1 {
+
+                __overlay__ {
+
+                  port {
+
+                    endpoint {
+                      remote-endpoint = <0x00>;
+                    };
+                  };
+                };
+              };
+
+              fragment@2 {
+                target = <0x00>;
+              };
+
+              fragment@3 {
+                target = <0x00>;
+              };
+
+              fragment@7 {
+                target = <0x00>;
+              };
+
+              fragment@8 {
+                target = <0x00>;
+              };
+
+              __overrides__ {
+                link-frequency = <0x00>;
+              };
+            };
+          };
+        '';
+      }
+    ];
+  };
+}