Merge tag 'armsoc-versatile-drm-dts' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/linusw/linux-integrator into next/dt

Pull "DTS changes for RealView+Versatile" from Linus Walleij:

This augments the RealView and Versatile device trees to properly
define the VGA and panel connectors in preparation for DRM.

* tag 'armsoc-versatile-drm-dts' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/linusw/linux-integrator:
  ARM: dts: Augment panel setting for Versatile
  ARM: dts: Add Versatile IB2 device tree
  ARM: dts: Augment VGA connector bridge on Realview PBX
  ARM: dts: Augment VGA connector bridge on Realview EB
  ARM: dts: Augment VGA connector bridge on PB1176
  ARM: dts: Augment VGA connector bridge on PB11MPcore

7 files changed, 296 insertions, 104 deletions

diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index 9be131bc22af..d8f49c3b9948 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -1064,6 +1064,7 @@ dtb-$(CONFIG_ARCH_UNIPHIER) += \
 	uniphier-sld8-ref.dtb
 dtb-$(CONFIG_ARCH_VERSATILE) += \
 	versatile-ab.dtb \
+	versatile-ab-ib2.dtb \
 	versatile-pb.dtb
 dtb-$(CONFIG_ARCH_VEXPRESS) += \
 	vexpress-v2p-ca5s.dtb \
diff --git a/arch/arm/boot/dts/arm-realview-eb.dtsi b/arch/arm/boot/dts/arm-realview-eb.dtsi
index e2e9599596e2..a917cf8825ca 100644
--- a/arch/arm/boot/dts/arm-realview-eb.dtsi
+++ b/arch/arm/boot/dts/arm-realview-eb.dtsi
@@ -143,6 +143,43 @@
 		port1-otg;
 	};
 
+	bridge {
+		compatible = "ti,ths8134a", "ti,ths8134";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			port@0 {
+				reg = <0>;
+
+				vga_bridge_in: endpoint {
+					remote-endpoint = <&clcd_pads>;
+				};
+			};
+
+			port@1 {
+				reg = <1>;
+
+				vga_bridge_out: endpoint {
+					remote-endpoint = <&vga_con_in>;
+				};
+			};
+		};
+	};
+
+	vga {
+		compatible = "vga-connector";
+
+		port {
+			vga_con_in: endpoint {
+				remote-endpoint = <&vga_bridge_out>;
+			};
+		};
+	};
+
 	/* These peripherals are inside the FPGA */
 	fpga {
 		#address-cells = <1>;
@@ -409,36 +446,15 @@
 			interrupt-names = "combined";
 			clocks = <&oscclk0>, <&pclk>;
 			clock-names = "clcdclk", "apb_pclk";
+			/* 1024x768 16bpp @65MHz works fine */
+			max-memory-bandwidth = <95000000>;
 
 			port {
 				clcd_pads: endpoint {
-					remote-endpoint = <&clcd_panel>;
+					remote-endpoint = <&vga_bridge_in>;
 					arm,pl11x,tft-r0g0b0-pads = <0 8 16>;
 				};
 			};
-
-			panel {
-				compatible = "panel-dpi";
-
-				port {
-					clcd_panel: endpoint {
-						remote-endpoint = <&clcd_pads>;
-					};
-				};
-
-				/* Standard 640x480 VGA timings */
-				panel-timing {
-					clock-frequency = <25175000>;
-					hactive = <640>;
-					hback-porch = <48>;
-					hfront-porch = <16>;
-					hsync-len = <96>;
-					vactive = <480>;
-					vback-porch = <33>;
-					vfront-porch = <10>;
-					vsync-len = <2>;
-				};
-			};
 		};
 	};
 };
diff --git a/arch/arm/boot/dts/arm-realview-pb1176.dts b/arch/arm/boot/dts/arm-realview-pb1176.dts
index c789564f2803..f935b72d3d96 100644
--- a/arch/arm/boot/dts/arm-realview-pb1176.dts
+++ b/arch/arm/boot/dts/arm-realview-pb1176.dts
@@ -161,6 +161,43 @@
 		port1-otg;
 	};
 
+	bridge {
+		compatible = "ti,ths8134a", "ti,ths8134";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			port@0 {
+				reg = <0>;
+
+				vga_bridge_in: endpoint {
+					remote-endpoint = <&clcd_pads>;
+				};
+			};
+
+			port@1 {
+				reg = <1>;
+
+				vga_bridge_out: endpoint {
+					remote-endpoint = <&vga_con_in>;
+				};
+			};
+		};
+	};
+
+	vga {
+		compatible = "vga-connector";
+
+		port {
+			vga_con_in: endpoint {
+				remote-endpoint = <&vga_bridge_out>;
+			};
+		};
+	};
+
 	soc {
 		#address-cells = <1>;
 		#size-cells = <1>;
@@ -403,36 +440,15 @@
 			interrupts = <0 47 IRQ_TYPE_LEVEL_HIGH>;
 			clocks = <&oscclk0>, <&pclk>;
 			clock-names = "clcdclk", "apb_pclk";
+			/* 1024x768 16bpp @65MHz works fine */
+			max-memory-bandwidth = <95000000>;
 
 			port {
 				clcd_pads: endpoint {
-					remote-endpoint = <&clcd_panel>;
+					remote-endpoint = <&vga_bridge_in>;
 					arm,pl11x,tft-r0g0b0-pads = <0 8 16>;
 				};
 			};
-
-			panel {
-				compatible = "panel-dpi";
-
-				port {
-					clcd_panel: endpoint {
-						remote-endpoint = <&clcd_pads>;
-					};
-				};
-
-				/* Standard 640x480 VGA timings */
-				panel-timing {
-					clock-frequency = <25175000>;
-					hactive = <640>;
-					hback-porch = <48>;
-					hfront-porch = <16>;
-					hsync-len = <96>;
-					vactive = <480>;
-					vback-porch = <33>;
-					vfront-porch = <10>;
-					vsync-len = <2>;
-				};
-			};
 		};
 	};
 
@@ -564,7 +580,5 @@
 			clocks = <&pclk>;
 			clock-names = "apb_pclk";
 		};
-
-
 	};
 };
diff --git a/arch/arm/boot/dts/arm-realview-pb11mp.dts b/arch/arm/boot/dts/arm-realview-pb11mp.dts
index 3944765ac4b0..36203288de42 100644
--- a/arch/arm/boot/dts/arm-realview-pb11mp.dts
+++ b/arch/arm/boot/dts/arm-realview-pb11mp.dts
@@ -242,6 +242,49 @@
 		bank-width = <4>;
 	};
 
+	bridge {
+		compatible = "ti,ths8134a", "ti,ths8134";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			port@0 {
+				reg = <0>;
+
+				vga_bridge_in: endpoint {
+					remote-endpoint = <&clcd_pads>;
+				};
+			};
+
+			port@1 {
+				reg = <1>;
+
+				vga_bridge_out: endpoint {
+					remote-endpoint = <&vga_con_in>;
+				};
+			};
+		};
+	};
+
+	vga {
+		/*
+		 * This DDC I2C is connected directly to the DVI portions
+		 * of the connector, so it's not really working when the
+		 * monitor is connected to the VGA connector.
+		 */
+		compatible = "vga-connector";
+		ddc-i2c-bus = <&i2c1>;
+
+		port {
+			vga_con_in: endpoint {
+				remote-endpoint = <&vga_bridge_out>;
+			};
+		};
+	};
+
 	soc {
 		#address-cells = <1>;
 		#size-cells = <1>;
@@ -575,6 +618,13 @@
 			clock-names = "apb_pclk";
 		};
 
+		i2c1: i2c@10016000 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			compatible = "arm,versatile-i2c";
+			reg = <0x10016000 0x1000>;
+		};
+
 		rtc: rtc@10017000 {
 			compatible = "arm,pl031", "arm,primecell";
 			reg = <0x10017000 0x1000>;
@@ -609,37 +659,15 @@
 			interrupts = <0 23 IRQ_TYPE_LEVEL_HIGH>;
 			clocks = <&oscclk4>, <&pclk>;
 			clock-names = "clcdclk", "apb_pclk";
-			max-memory-bandwidth = <130000000>; /* 16bpp @ 63.5MHz */
+			/* 1024x768 16bpp @65MHz works fine */
+			max-memory-bandwidth = <95000000>;
 
 			port {
 				clcd_pads: endpoint {
-					remote-endpoint = <&clcd_panel>;
+					remote-endpoint = <&vga_bridge_in>;
 					arm,pl11x,tft-r0g0b0-pads = <0 8 16>;
 				};
 			};
-
-			panel {
-				compatible = "panel-dpi";
-
-				port {
-					clcd_panel: endpoint {
-						remote-endpoint = <&clcd_pads>;
-					};
-				};
-
-				/* Standard 640x480 VGA timings */
-				panel-timing {
-					clock-frequency = <25175000>;
-					hactive = <640>;
-					hback-porch = <48>;
-					hfront-porch = <16>;
-					hsync-len = <96>;
-					vactive = <480>;
-					vback-porch = <33>;
-					vfront-porch = <10>;
-					vsync-len = <2>;
-				};
-			};
 		};
 
 		/*
diff --git a/arch/arm/boot/dts/arm-realview-pbx.dtsi b/arch/arm/boot/dts/arm-realview-pbx.dtsi
index aeb49c4bd773..10868ba3277f 100644
--- a/arch/arm/boot/dts/arm-realview-pbx.dtsi
+++ b/arch/arm/boot/dts/arm-realview-pbx.dtsi
@@ -34,7 +34,8 @@
 		serial1 = &serial1;
 		serial2 = &serial2;
 		serial3 = &serial3;
-		i2c0 = &i2c;
+		i2c0 = &i2c0;
+		i2c1 = &i2c1;
 	};
 
 	memory {
@@ -158,6 +159,49 @@
 		port1-otg;
 	};
 
+	bridge {
+		compatible = "ti,ths8134a", "ti,ths8134";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			port@0 {
+				reg = <0>;
+
+				vga_bridge_in: endpoint {
+					remote-endpoint = <&clcd_pads>;
+				};
+			};
+
+			port@1 {
+				reg = <1>;
+
+				vga_bridge_out: endpoint {
+					remote-endpoint = <&vga_con_in>;
+				};
+			};
+		};
+	};
+
+	vga {
+		/*
+		 * This DDC I2C is connected directly to the DVI portions
+		 * of the connector, so it's not really working when the
+		 * monitor is connected to the VGA connector.
+		 */
+		compatible = "vga-connector";
+		ddc-i2c-bus = <&i2c1>;
+
+		port {
+			vga_con_in: endpoint {
+				remote-endpoint = <&vga_bridge_out>;
+			};
+		};
+	};
+
 	soc: soc@0 {
 		compatible = "arm,realview-pbx-soc", "simple-bus";
 		#address-cells = <1>;
@@ -285,7 +329,7 @@
 					       <&timclk>;
 		};
 
-		i2c: i2c@10002000 {
+		i2c0: i2c@10002000 {
 			#address-cells = <1>;
 			#size-cells = <0>;
 			compatible = "arm,versatile-i2c";
@@ -396,7 +440,12 @@
 			clock-names = "apb_pclk";
 		};
 
-		/* DVI serial bus control is at 10016000 */
+		i2c1: i2c@10016000 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			compatible = "arm,versatile-i2c";
+			reg = <0x10016000 0x1000>;
+		};
 
 		rtc: rtc@10017000 {
 			compatible = "arm,pl031", "arm,primecell";
@@ -506,36 +555,15 @@
 			interrupt-names = "combined";
 			clocks = <&oscclk4>, <&pclk>;
 			clock-names = "clcdclk", "apb_pclk";
+			/* 1024x768 16bpp @65MHz works fine */
+			max-memory-bandwidth = <95000000>;
 
 			port {
 				clcd_pads: endpoint {
-					remote-endpoint = <&clcd_panel>;
+					remote-endpoint = <&vga_bridge_in>;
 					arm,pl11x,tft-r0g0b0-pads = <0 8 16>;
 				};
 			};
-
-			panel {
-				compatible = "panel-dpi";
-
-				port {
-					clcd_panel: endpoint {
-						remote-endpoint = <&clcd_pads>;
-					};
-				};
-
-				/* Standard 640x480 VGA timings */
-				panel-timing {
-					clock-frequency = <25175000>;
-					hactive = <640>;
-					hback-porch = <48>;
-					hfront-porch = <16>;
-					hsync-len = <96>;
-					vactive = <480>;
-					vback-porch = <33>;
-					vfront-porch = <10>;
-					vsync-len = <2>;
-				};
-			};
 		};
 	};
 };
diff --git a/arch/arm/boot/dts/versatile-ab-ib2.dts b/arch/arm/boot/dts/versatile-ab-ib2.dts
new file mode 100644
index 000000000000..5890cb974f78
--- /dev/null
+++ b/arch/arm/boot/dts/versatile-ab-ib2.dts
@@ -0,0 +1,26 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * The Versatile AB with the IB2 expansion board mounted.
+ * This works as a superset of the Versatile AB.
+ */
+
+#include "versatile-ab.dts"
+
+/ {
+	model = "ARM Versatile AB + IB2 board";
+
+	/* Special IB2 control register */
+	ib2_syscon@27000000 {
+		compatible = "arm,versatile-ib2-syscon", "syscon", "simple-mfd";
+		reg = <0x27000000 0x4>;
+
+		led@00.4 {
+			compatible = "register-bit-led";
+			offset = <0x00>;
+			mask = <0x10>;
+			label = "versatile-ib2:0";
+			linux,default-trigger = "heartbeat";
+			default-state = "on";
+		};
+	};
+};
diff --git a/arch/arm/boot/dts/versatile-ab.dts b/arch/arm/boot/dts/versatile-ab.dts
index 4a51612996bc..5f61d3609027 100644
--- a/arch/arm/boot/dts/versatile-ab.dts
+++ b/arch/arm/boot/dts/versatile-ab.dts
@@ -30,6 +30,43 @@
 		clock-frequency = <24000000>;
 	};
 
+	bridge {
+		compatible = "ti,ths8134b", "ti,ths8134";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			port@0 {
+				reg = <0>;
+
+				vga_bridge_in: endpoint {
+					remote-endpoint = <&clcd_pads_vga_dac>;
+				};
+			};
+
+			port@1 {
+				reg = <1>;
+
+				vga_bridge_out: endpoint {
+					remote-endpoint = <&vga_con_in>;
+				};
+			};
+		};
+	};
+
+	vga {
+		compatible = "vga-connector";
+
+		port {
+			vga_con_in: endpoint {
+				remote-endpoint = <&vga_bridge_out>;
+			};
+		};
+	};
+
 	core-module@10000000 {
 		compatible = "arm,core-module-versatile", "syscon", "simple-mfd";
 		reg = <0x10000000 0x200>;
@@ -230,7 +267,39 @@
 			reg = <0x10120000 0x1000>;
 			interrupts = <16>;
 			clocks = <&osc1>, <&pclk>;
-			clock-names = "clcd", "apb_pclk";
+			clock-names = "clcdclk", "apb_pclk";
+			/* 800x600 16bpp @ 36MHz works fine */
+			max-memory-bandwidth = <54000000>;
+
+			/*
+			 * This port is routed through a PLD (Programmable
+			 * Logic Device) that routes the output from the CLCD
+			 * (after transformations) to the VGA DAC and also an
+			 * external panel connector. The PLD is essential for
+			 * supporting RGB565/BGR565.
+			 *
+			 * The signals from the port thus reaches two endpoints.
+			 * The PLD is managed through a few special bits in the
+			 * FPGA "sysreg".
+			 *
+			 * This arrangement can be clearly seen in
+			 * ARM DUI 0225D, page 3-41, figure 3-19.
+			 */
+			port@0 {
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				clcd_pads_panel: endpoint@0 {
+					reg = <0>;
+					remote-endpoint = <&panel_in>;
+					arm,pl11x,tft-r0g0b0-pads = <0 8 16>;
+				};
+				clcd_pads_vga_dac: endpoint@1 {
+					reg = <1>;
+					remote-endpoint = <&vga_bridge_in>;
+					arm,pl11x,tft-r0g0b0-pads = <0 8 16>;
+				};
+			};
 		};
 
 		sctl@101e0000 {
@@ -319,8 +388,18 @@
 			ranges = <0 0x10000000 0x10000>;
 
 			sysreg@0 {
-				compatible = "arm,versatile-sysreg", "syscon";
+				compatible = "arm,versatile-sysreg", "syscon", "simple-mfd";
 				reg = <0x00000 0x1000>;
+
+				panel: display@0 {
+					compatible = "arm,versatile-tft-panel";
+
+					port {
+						panel_in: endpoint {
+							remote-endpoint = <&clcd_pads_panel>;
+						};
+					};
+				};
 			};
 
 			aaci@4000 {