[RFC PATCH 26/26] ARM: dts: imx6qdl: Add mipi_ipu1/2 multiplexers, mipi_csi, and their connections

[Philipp Zabel <p.zabel@pengutronix.de>]

This patch adds the device tree graph connecting the input multiplexers
to the IPU CSIs and the MIPI-CSI2 gasket on i.MX6. The MIPI_IPU multiplexers
are added as children of the iomuxc-gpr syscon device node.
On i.MX6Q/D two two-input multiplexers in front of IPU1 CSI0 and IPU2 CSI1
allow to select between CSI0/1 parallel input pads and the MIPI CSI-2 virtual
channels 0/3.
On i.MX6DL/S two five-input multiplexers in front of IPU1 CSI0 and IPU1 CSI1
allow to select between CSI0/1 parallel input pads and any of the four MIPI
CSI-2 virtual channels.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
---
 arch/arm/boot/dts/imx6dl.dtsi  | 182 +++++++++++++++++++++++++++++++++++++++++
 arch/arm/boot/dts/imx6q.dtsi   | 118 ++++++++++++++++++++++++++
 arch/arm/boot/dts/imx6qdl.dtsi |   8 ++
 3 files changed, 308 insertions(+)

diff --git a/arch/arm/boot/dts/imx6dl.dtsi b/arch/arm/boot/dts/imx6dl.dtsi
index 5c5f574..619c7ce 100644
--- a/arch/arm/boot/dts/imx6dl.dtsi
+++ b/arch/arm/boot/dts/imx6dl.dtsi
@@ -110,3 +110,185 @@
 		      "di0_sel", "di1_sel",
 		      "di0", "di1";
 };
+
+&gpr {
+	ipu_csi0_mux {
+		compatible = "video-multiplexer";
+		reg = <0x34>;
+		bit-mask = <0x7>;
+		bit-shift = <0>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		port@0 {
+			reg = <0>;
+
+			ipu_csi0_mux_from_mipi_csi0: endpoint {
+				remote-endpoint = <&mipi_csi0_to_ipu_csi0_mux>;
+			};
+		};
+
+		port@1 {
+			reg = <1>;
+
+			ipu_csi0_mux_from_mipi_csi1: endpoint {
+				remote-endpoint = <&mipi_csi1_to_ipu_csi0_mux>;
+			};
+		};
+
+		port@2 {
+			reg = <2>;
+
+			ipu_csi0_mux_from_mipi_csi2: endpoint {
+				remote-endpoint = <&mipi_csi2_to_ipu_csi0_mux>;
+			};
+		};
+
+		port@3 {
+			reg = <3>;
+
+			ipu_csi0_mux_from_mipi_csi3: endpoint {
+				remote-endpoint = <&mipi_csi3_to_ipu_csi0_mux>;
+			};
+		};
+
+		csi0: port@4 {
+			reg = <4>;
+		};
+
+		port@5 {
+			reg = <5>;
+
+			ipu_csi0_mux_to_ipu1_csi0: endpoint {
+				remote-endpoint = <&ipu1_csi0_from_ipu_csi0_mux>;
+			};
+		};
+	};
+
+	ipu_csi1_mux {
+		compatible = "video-multiplexer";
+		reg = <0x34>;
+		bit-mask = <0x7>;
+		bit-shift = <0>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		port@0 {
+			reg = <0>;
+
+			ipu_csi1_mux_from_mipi_csi0: endpoint {
+				remote-endpoint = <&mipi_csi0_to_ipu_csi1_mux>;
+			};
+		};
+
+		port@1 {
+			reg = <1>;
+
+			ipu_csi1_mux_from_mipi_csi1: endpoint {
+				remote-endpoint = <&mipi_csi1_to_ipu_csi1_mux>;
+			};
+		};
+
+		port@2 {
+			reg = <2>;
+
+			ipu_csi1_mux_from_mipi_csi2: endpoint {
+				remote-endpoint = <&mipi_csi2_to_ipu_csi1_mux>;
+			};
+		};
+
+		port@3 {
+			reg = <3>;
+
+			ipu_csi1_mux_from_mipi_csi3: endpoint {
+				remote-endpoint = <&mipi_csi3_to_ipu_csi1_mux>;
+			};
+		};
+
+		csi1: port@4 {
+			reg = <4>;
+		};
+
+		port@5 {
+			reg = <5>;
+
+			ipu_csi1_mux_to_ipu1_csi1: endpoint {
+				remote-endpoint = <&ipu1_csi1_from_ipu_csi1_mux>;
+			};
+		};
+	};
+};
+
+&ipu1_csi0 {
+	ipu1_csi0_from_ipu_csi0_mux: endpoint {
+		remote-endpoint = <&ipu_csi0_mux_to_ipu1_csi0>;
+	};
+};
+
+&ipu1_csi1 {
+	ipu1_csi1_from_ipu_csi1_mux: endpoint {
+		remote-endpoint = <&ipu_csi1_mux_to_ipu1_csi1>;
+	};
+};
+
+&mipi_csi {
+	port@0 {
+		reg = <0>;
+	};
+
+	port@1 {
+		reg = <1>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		mipi_csi0_to_ipu_csi0_mux: endpoint@0 {
+			remote-endpoint = <&ipu_csi0_mux_from_mipi_csi0>;
+		};
+
+		mipi_csi0_to_ipu_csi1_mux: endpoint@1 {
+			remote-endpoint = <&ipu_csi1_mux_from_mipi_csi0>;
+		};
+	};
+
+	port@2 {
+		reg = <2>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		mipi_csi1_to_ipu_csi0_mux: endpoint@0 {
+			remote-endpoint = <&ipu_csi0_mux_from_mipi_csi1>;
+		};
+
+		mipi_csi1_to_ipu_csi1_mux: endpoint@1 {
+			remote-endpoint = <&ipu_csi1_mux_from_mipi_csi1>;
+		};
+	};
+
+	port@3 {
+		reg = <3>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		mipi_csi2_to_ipu_csi0_mux: endpoint@0 {
+			remote-endpoint = <&ipu_csi0_mux_from_mipi_csi2>;
+		};
+
+		mipi_csi2_to_ipu_csi1_mux: endpoint@1 {
+			remote-endpoint = <&ipu_csi1_mux_from_mipi_csi2>;
+		};
+	};
+
+	port@4 {
+		reg = <4>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		mipi_csi3_to_ipu_csi0_mux: endpoint@0 {
+			remote-endpoint = <&ipu_csi0_mux_from_mipi_csi3>;
+		};
+
+		mipi_csi3_to_ipu_csi1_mux: endpoint@1 {
+			remote-endpoint = <&ipu_csi1_mux_from_mipi_csi3>;
+		};
+	};
+};
diff --git a/arch/arm/boot/dts/imx6q.dtsi b/arch/arm/boot/dts/imx6q.dtsi
index 919a18a..bac825e 100644
--- a/arch/arm/boot/dts/imx6q.dtsi
+++ b/arch/arm/boot/dts/imx6q.dtsi
@@ -159,10 +159,18 @@
 
 			ipu2_csi0: port@0 {
 				reg = <0>;
+
+				ipu2_csi0_from_csi2ipu: endpoint {
+					remote-endpoint = <&csi2ipu_to_ipu2_csi0>;
+				};
 			};
 
 			ipu2_csi1: port@1 {
 				reg = <1>;
+
+				ipu2_csi1_from_mipi_ipu2_mux: endpoint {
+					remote-endpoint = <&mipi_ipu2_mux_to_ipu2_csi1>;
+				};
 			};
 
 			ipu2_di0: port@2 {
@@ -238,6 +246,78 @@
 	};
 };
 
+&gpr {
+	mipi_ipu1_mux {
+		compatible = "video-multiplexer";
+		reg = <0x04>;
+		bit-mask = <1>;
+		bit-shift = <19>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		port@0 {
+			reg = <0>;
+
+			mipi_ipu1_mux_from_mipi_csi0: endpoint {
+				remote-endpoint = <&mipi_csi0_to_mipi_ipu1_mux>;
+			};
+		};
+
+		csi0: port@1 {
+			reg = <1>;
+		};
+
+		port@2 {
+			reg = <2>;
+
+			mipi_ipu1_mux_to_ipu1_csi0: endpoint {
+				remote-endpoint = <&ipu1_csi0_from_mipi_ipu1_mux>;
+			};
+		};
+	};
+
+	mipi_ipu2_mux {
+		compatible = "video-multiplexer";
+		reg = <0x04>;
+		bit-mask = <1>;
+		bit-shift = <20>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		port@0 {
+			reg = <0>;
+
+			mipi_ipu2_mux_from_mipi_csi3: endpoint {
+				remote-endpoint = <&mipi_csi3_to_mipi_ipu2_mux>;
+			};
+		};
+
+		csi1: port@1 {
+			reg = <1>;
+		};
+
+		port@2 {
+			reg = <2>;
+
+			mipi_ipu2_mux_to_ipu2_csi1: endpoint {
+				remote-endpoint = <&ipu2_csi1_from_mipi_ipu2_mux>;
+			};
+		};
+	};
+};
+
+&ipu1_csi1 {
+	ipu1_csi1_from_mipi_csi1: endpoint {
+		remote-endpoint = <&mipi_csi1_to_ipu1_csi1>;
+	};
+};
+
+&ipu2_csi0 {
+	ipu2_csi0_from_mipi_csi2: endpoint {
+		remote-endpoint = <&mipi_csi2_to_ipu2_csi0>;
+	};
+};
+
 &ldb {
 	clocks = <&clks 33>, <&clks 34>,
 		 <&clks 39>, <&clks 40>, <&clks 41>, <&clks 42>,
@@ -283,6 +363,44 @@
 	};
 };
 
+&mipi_csi {
+	port@0 {
+		reg = <0>;
+	};
+
+	port@1 {
+		reg = <1>;
+
+		mipi_csi0_to_mipi_ipu1_mux: endpoint {
+			remote-endpoint = <&mipi_ipu1_mux_from_mipi_csi0>;
+		};
+	};
+
+	port@2 {
+		reg = <2>;
+
+		mipi_csi1_to_ipu1_csi1: endpoint {
+			remote-endpoint = <&ipu1_csi1_from_mipi_csi1>;
+		};
+	};
+
+	port@3 {
+		reg = <3>;
+
+		mipi_csi2_to_ipu2_csi0: endpoint {
+			remote-endpoint = <&ipu2_csi0_from_mipi_csi2>;
+		};
+	};
+
+	port@4 {
+		reg = <4>;
+
+		mipi_csi3_to_mipi_ipu2_mux: endpoint {
+			remote-endpoint = <&mipi_ipu2_mux_from_mipi_csi3>;
+		};
+	};
+};
+
 &mipi_dsi {
 	port@2 {
 		reg = <2>;
diff --git a/arch/arm/boot/dts/imx6qdl.dtsi b/arch/arm/boot/dts/imx6qdl.dtsi
index 27303d6..e2f8924 100644
--- a/arch/arm/boot/dts/imx6qdl.dtsi
+++ b/arch/arm/boot/dts/imx6qdl.dtsi
@@ -659,6 +659,8 @@
 			gpr: iomuxc-gpr@020e0000 {
 				compatible = "fsl,imx6q-iomuxc-gpr", "syscon";
 				reg = <0x020e0000 0x38>;
+				#address-cells = <1>;
+				#size-cells = <0>;
 			};
 
 			iomuxc: iomuxc@020e0000 {
@@ -961,6 +963,8 @@
 
 			mipi_csi: mipi@021dc000 {
 				reg = <0x021dc000 0x4000>;
+				#address-cells = <1>;
+				#size-cells = <0>;
 			};
 
 			mipi_dsi: mipi@021e0000 {
@@ -1049,6 +1053,10 @@
 
 			ipu1_csi0: port@0 {
 				reg = <0>;
+
+				ipu1_csi0_from_mipi_ipu1_mux: endpoint {
+					remote-endpoint = <&mipi_ipu1_mux_to_ipu1_csi0>;
+				};
 			};
 
 			ipu1_csi1: port@1 {
-- 
2.0.0.rc2