diff --git a/arch/arm/boot/dts/imx6q-sabrelite.dts b/arch/arm/boot/dts/imx6q-sabrelite.dts
index f004913..cf9b3f5 100644
--- a/arch/arm/boot/dts/imx6q-sabrelite.dts
+++ b/arch/arm/boot/dts/imx6q-sabrelite.dts
@@ -50,6 +50,12 @@
 		};
 	};
 
+	imx-drm {
+		compatible = "fsl,imx-drm";
+		crtcs = <&ipu1 0>, <&ipu1 1>, <&ipu2 0>, <&ipu2 1>;
+		connectors = <&hdmi>;
+	};
+
 	sound {
 		compatible = "fsl,imx6q-sabrelite-sgtl5000",
 			     "fsl,imx-audio-sgtl5000";
@@ -93,6 +99,12 @@
 	status = "okay";
 };
 
+&hdmi {
+	status = "okay";
+	ddc = <&i2c2>;
+	crtcs = <&ipu1 0>, <&ipu1 1>, <&ipu2 0>, <&ipu2 1>;
+};
+
 &i2c1 {
 	status = "okay";
 	clock-frequency = <100000>;
@@ -108,6 +120,13 @@
 	};
 };
 
+&i2c2 {
+	status = "okay";
+	clock-frequency = <100000>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_i2c2_2>;
+};
+
 &iomuxc {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_hog>;
-- 
1.8.5.1

Am Donnerstag, den 02.01.2014, 21:28 +0000 schrieb Russell King:
> Use the componentised device support for imx-drm.  This requires all
> the sub-components and the master device to register with the component
> device support.
> 
> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
> ---
>  arch/arm/boot/dts/imx51-babbage.dts        |   10 ++-
>  arch/arm/boot/dts/imx53-m53evk.dts         |    8 ++-
>  arch/arm/boot/dts/imx53-mba53.dts          |    6 ++
>  arch/arm/boot/dts/imx53-qsb.dts            |    8 ++-
>  arch/arm/boot/dts/imx6qdl-sabresd.dtsi     |    6 ++
>  drivers/staging/imx-drm/imx-drm-core.c     |  105 ++++++++++++++++++++++-----
>  drivers/staging/imx-drm/imx-ldb.c          |   40 ++++++++---
>  drivers/staging/imx-drm/imx-tve.c          |   63 +++++++++++------
>  drivers/staging/imx-drm/ipuv3-crtc.c       |   46 +++++++++----
>  drivers/staging/imx-drm/parallel-display.c |   30 ++++++--
>  10 files changed, 242 insertions(+), 80 deletions(-)
> 
> diff --git a/arch/arm/boot/dts/imx51-babbage.dts b/arch/arm/boot/dts/imx51-babbage.dts
> index be1407cf5abd..6ff15a0eacb3 100644
> --- a/arch/arm/boot/dts/imx51-babbage.dts
> +++ b/arch/arm/boot/dts/imx51-babbage.dts
> @@ -21,7 +21,7 @@
>  		reg = <0x90000000 0x20000000>;
>  	};
>  
> -	display@di0 {
> +	display0: display@di0 {
>  		compatible = "fsl,imx-parallel-display";
>  		crtcs = <&ipu 0>;
[...]

Before moving imx-drm out of staging, I'd like to get rid of the
unfortunate 'crtcs' property. I'd rather prefer the components to be
connected with a device tree graph. I'm not quite sure if the DI0/1
should have their own device tree node inside the IPU node or if they
should just appear directly as two of four ports of the IPU (the other
two being CSI0/1). In the latter case, for example:

 arch/arm/boot/dts/imx6q.dtsi           | 32 ++++++++++++++++++++++++++++++--
 arch/arm/boot/dts/imx6qdl.dtsi         | 33 ++++++++++++++++++++++++++++++++-
 drivers/staging/imx-drm/imx-drm-core.c | 44 ++++++++++++++++++++++++++++++++------------
 3 files changed, 94 insertions(+), 15 deletions(-)

diff --git a/arch/arm/boot/dts/imx6q.dtsi b/arch/arm/boot/dts/imx6q.dtsi
index 187fe33..93f4721 100644
--- a/arch/arm/boot/dts/imx6q.dtsi
+++ b/arch/arm/boot/dts/imx6q.dtsi
@@ -132,13 +132,30 @@
 		};
 
 		ipu2: ipu@02800000 {
-			#crtc-cells = <1>;
+			#address-cells = <1>;
+			#size-cells = <0>;
 			compatible = "fsl,imx6q-ipu";
 			reg = <0x02800000 0x400000>;
 			interrupts = <0 8 0x4 0 7 0x4>;
 			clocks = <&clks 133>, <&clks 134>, <&clks 137>;
 			clock-names = "bus", "di0", "di1";
 			resets = <&src 4>;
+
+			port@2 {
+				reg = <2>;
+
+				ipu2_di0_hdmi: endpoint {
+					remote-endpoint = <&hdmi_mux_2>;
+				};
+			};
+
+			port@3 {
+				reg = <3>;
+
+				ipu2_di1_hdmi: endpoint {
+					remote-endpoint = <&hdmi_mux_3>;
+				};
+			};
 		};
 	};
 };
@@ -162,5 +179,16 @@
 
 &hdmi {
 	compatible = "fsl,imx6q-hdmi";
-	crtcs = <&ipu1 0>, <&ipu1 1>, <&ipu2 0>, <&ipu2 1>;
+
+	port@2 {
+		hdmi_mux_2: endpoint {
+			remote-endpoint = <&ipu2_di0_hdmi>;
+		};
+	};
+
+	port@3 {
+		hdmi_mux_3: endpoint {
+			remote-endpoint = <&ipu2_di1_hdmi>;
+		};
+	};
 };
diff --git a/arch/arm/boot/dts/imx6qdl.dtsi b/arch/arm/boot/dts/imx6qdl.dtsi
index 930ebe0..d9cb9a3 100644
--- a/arch/arm/boot/dts/imx6qdl.dtsi
+++ b/arch/arm/boot/dts/imx6qdl.dtsi
@@ -1369,12 +1369,26 @@
 			};
 
 			hdmi: hdmi@0120000 {
+				#address-cells = <1>;
+				#size-cells = <0>;
 				reg = <0x00120000 0x9000>;
 				interrupts = <0 115 0x04>;
 				gpr = <&gpr>;
 				clocks = <&clks 123>, <&clks 124>;
 				clock-names = "iahb", "isfr";
 				status = "disabled";
+
+				port@0 {
+					hdmi_mux_0: endpoint {
+						remote-endpoint = <&ipu1_di0_hdmi>;
+					};
+				};
+
+				port@1 {
+					hdmi_mux_1: endpoint {
+						remote-endpoint = <&ipu1_di1_hdmi>;
+					};
+				};
 			};
 
 			dcic1: dcic@020e4000 {
@@ -1643,13 +1657,30 @@
 		};
 
 		ipu1: ipu@02400000 {
-			#crtc-cells = <1>;
+			#address-cells = <1>;
+			#size-cells = <0>;
 			compatible = "fsl,imx6q-ipu";
 			reg = <0x02400000 0x400000>;
 			interrupts = <0 6 0x4 0 5 0x4>;
 			clocks = <&clks 130>, <&clks 131>, <&clks 132>;
 			clock-names = "bus", "di0", "di1";
 			resets = <&src 2>;
+
+			port@2 {
+				reg = <2>;
+
+				ipu1_di0_hdmi: endpoint {
+					remote-endpoint = <&hdmi_mux_0>;
+				};
+			};
+
+			port@3 {
+				reg = <3>;
+
+				ipu1_di1_hdmi: endpoint {
+					remote-endpoint = <&hdmi_mux_1>;
+				};
+			};
 		};
 	};
 };
diff --git a/drivers/staging/imx-drm/imx-drm-core.c b/drivers/staging/imx-drm/imx-drm-core.c
index 2490dc3..2c20434 100644
--- a/drivers/staging/imx-drm/imx-drm-core.c
+++ b/drivers/staging/imx-drm/imx-drm-core.c
@@ -23,6 +23,7 @@
 #include <drm/drm_crtc_helper.h>
 #include <drm/drm_gem_cma_helper.h>
 #include <drm/drm_fb_cma_helper.h>
+#include <media/v4l2-of.h>
 
 #include "imx-drm.h"
 
@@ -420,9 +421,23 @@ EXPORT_SYMBOL_GPL(imx_drm_remove_crtc);
  * or removed once the DRM device has been fully initialised.
  */
 static uint32_t imx_drm_find_crtc_mask(struct imx_drm_device *imxdrm,
-	void *cookie, int id)
+	struct device_node *endpoint)
 {
+	struct device_node *remote_port;
+	void *cookie;
 	unsigned i;
+	int id = 0;
+
+	remote_port = v4l2_of_get_remote_port(endpoint);
+	if (remote_port)
+		of_property_read_u32(remote_port, "reg", &id);
+	else
+		return 0;
+	cookie = remote_port->parent;
+	of_node_put(remote_port);
+
+	/* IPU specific: CSI0/1 at 0/1, DI0/1 at 2/3 */
+	id -= 2;
 
 	for (i = 0; i < MAX_CRTC; i++) {
 		struct imx_drm_crtc *imx_drm_crtc = imxdrm->crtc[i];
@@ -438,24 +453,21 @@ int imx_drm_encoder_parse_of(struct drm_device *drm,
 	struct drm_encoder *encoder, struct device_node *np)
 {
 	struct imx_drm_device *imxdrm = drm->dev_private;
+	struct device_node *ep, *last_ep = NULL;
 	uint32_t crtc_mask = 0;
 	int i, ret = 0;
 
 	for (i = 0; !ret; i++) {
-		struct of_phandle_args args;
 		uint32_t mask;
-		int id;
 
-		ret = of_parse_phandle_with_args(np, "crtcs", "#crtc-cells", i,
-						 &args);
-		if (ret == -ENOENT)
+		ep = v4l2_of_get_next_endpoint(np, last_ep);
+		if (last_ep)
+			of_node_put(last_ep);
+		if (!ep)
 			break;
-		if (ret < 0)
-			return ret;
 
-		id = args.args_count > 0 ? args.args[0] : 0;
-		mask = imx_drm_find_crtc_mask(imxdrm, args.np, id);
-		of_node_put(args.np);
+		/* CSI */
+		mask = imx_drm_find_crtc_mask(imxdrm, ep);
 
 		/*
 		 * If we failed to find the CRTC(s) which this encoder is
@@ -463,12 +475,20 @@ int imx_drm_encoder_parse_of(struct drm_device *drm,
 		 * not been registered yet.  Defer probing, and hope that
 		 * the required CRTC is added later.
 		 */
-		if (mask == 0)
+		if (mask == 0) {
+			of_node_put(ep);
 			return -EPROBE_DEFER;
+		}
 
 		crtc_mask |= mask;
+		last_ep = ep;
 	}
 
+	if (ep)
+		of_node_put(ep);
+	if (i == 0)
+		return -ENOENT;
+
 	encoder->possible_crtcs = crtc_mask;
 
 	/* FIXME: this is the mask of outputs which can clone this output. */
-- 
1.8.5.1

diff --git a/arch/arm/boot/dts/imx6q.dtsi b/arch/arm/boot/dts/imx6q.dtsi
index 187fe33..93f4721 100644
--- a/arch/arm/boot/dts/imx6q.dtsi
+++ b/arch/arm/boot/dts/imx6q.dtsi
@@ -132,13 +132,30 @@
 		};
 
 		ipu2: ipu@02800000 {
-			#crtc-cells = <1>;
+			#address-cells = <1>;
+			#size-cells = <0>;
 			compatible = "fsl,imx6q-ipu";
 			reg = <0x02800000 0x400000>;
 			interrupts = <0 8 0x4 0 7 0x4>;
 			clocks = <&clks 133>, <&clks 134>, <&clks 137>;
 			clock-names = "bus", "di0", "di1";
 			resets = <&src 4>;
+
+			port@2 {
+				reg = <2>;
+
+				ipu2_di0_hdmi: endpoint {
+					remote-endpoint = <&hdmi_mux_2>;
+				};
+			};
+
+			port@3 {
+				reg = <3>;
+
+				ipu2_di1_hdmi: endpoint {
+					remote-endpoint = <&hdmi_mux_3>;
+				};
+			};
 		};
 	};
 };
@@ -162,5 +179,16 @@
 
 &hdmi {
 	compatible = "fsl,imx6q-hdmi";
-	crtcs = <&ipu1 0>, <&ipu1 1>, <&ipu2 0>, <&ipu2 1>;
+
+	port@2 {
+		hdmi_mux_2: endpoint {
+			remote-endpoint = <&ipu2_di0_hdmi>;
+		};
+	};
+
+	port@3 {
+		hdmi_mux_3: endpoint {
+			remote-endpoint = <&ipu2_di1_hdmi>;
+		};
+	};
 };
diff --git a/arch/arm/boot/dts/imx6qdl.dtsi b/arch/arm/boot/dts/imx6qdl.dtsi
index 930ebe0..d9cb9a3 100644
--- a/arch/arm/boot/dts/imx6qdl.dtsi
+++ b/arch/arm/boot/dts/imx6qdl.dtsi
@@ -1369,12 +1369,26 @@
 			};
 
 			hdmi: hdmi@0120000 {
+				#address-cells = <1>;
+				#size-cells = <0>;
 				reg = <0x00120000 0x9000>;
 				interrupts = <0 115 0x04>;
 				gpr = <&gpr>;
 				clocks = <&clks 123>, <&clks 124>;
 				clock-names = "iahb", "isfr";
 				status = "disabled";
+
+				port@0 {
+					hdmi_mux_0: endpoint {
+						remote-endpoint = <&ipu1_di0_hdmi>;
+					};
+				};
+
+				port@1 {
+					hdmi_mux_1: endpoint {
+						remote-endpoint = <&ipu1_di1_hdmi>;
+					};
+				};
 			};
 
 			dcic1: dcic@020e4000 {
@@ -1643,13 +1657,30 @@
 		};
 
 		ipu1: ipu@02400000 {
-			#crtc-cells = <1>;
+			#address-cells = <1>;
+			#size-cells = <0>;
 			compatible = "fsl,imx6q-ipu";
 			reg = <0x02400000 0x400000>;
 			interrupts = <0 6 0x4 0 5 0x4>;
 			clocks = <&clks 130>, <&clks 131>, <&clks 132>;
 			clock-names = "bus", "di0", "di1";
 			resets = <&src 2>;
+
+			port@2 {
+				reg = <2>;
+
+				ipu1_di0_hdmi: endpoint {
+					remote-endpoint = <&hdmi_mux_0>;
+				};
+			};
+
+			port@3 {
+				reg = <3>;
+
+				ipu1_di1_hdmi: endpoint {
+					remote-endpoint = <&hdmi_mux_1>;
+				};
+			};
 		};
 	};
 };
