[PATCH 0/2] Add support for DP and HDMI on j721e-sk

[PATCH 0/2] Add support for DP and HDMI on j721e-sk

[Rahul T R]

The following series of patches enables DisplayPort and
HDMI on j721e-sk

This series depends on
https://lore.kernel.org/all/20220426153553.18474-1-r-ravikumar@ti.com/
which adds required nodes in the SoC dtsi file

boot logs:
   https://gist.githubusercontent.com/ravi-rahul/d2e139d8ff9446ede003291a6a3e8be5/raw/ed51498efe7f7bc4848dffb27e2b37e0beb7a94d/j7_sk_DP_HDMI_boot.log

kernel patch verify report:
   https://gist.githubusercontent.com/ravi-rahul/1e2350b53ac7d6ba7694373c0b3bbb44/raw/f09f75821610b42ad1f8b4bf3e5ef7843de0c76e/report-kernel-patch-verify-sk-dp-hdmi.txt

Rahul T R (2):
  arm64: dts: ti: k3-j721e-sk: Enable DisplayPort
  arm64: dts: ti: k3-j721e-sk: Enable HDMI

 arch/arm64/boot/dts/ti/k3-j721e-sk.dts | 123 ++++++++++++++++++++++++-
 1 file changed, 119 insertions(+), 4 deletions(-)

-- 
2.17.1

[PATCH 1/2] arm64: dts: ti: k3-j721e-sk: Enable DisplayPort

[Rahul T R]

Add the endpoint nodes to describe connection from
DSS => MHDP => DisplayPort connector.

Signed-off-by: Rahul T R <r-ravikumar@ti.com>
---
 arch/arm64/boot/dts/ti/k3-j721e-sk.dts | 45 +++++++++++++++++++++++---
 1 file changed, 41 insertions(+), 4 deletions(-)

diff --git a/arch/arm64/boot/dts/ti/k3-j721e-sk.dts b/arch/arm64/boot/dts/ti/k3-j721e-sk.dts
index 98177a20b45f..07b1e40fbc47 100644
--- a/arch/arm64/boot/dts/ti/k3-j721e-sk.dts
+++ b/arch/arm64/boot/dts/ti/k3-j721e-sk.dts
@@ -213,6 +213,18 @@
 		enable-active-high;
 	};
 
+	dp0: connector {
+		compatible = "dp-connector";
+		label = "DP0";
+		type = "full-size";
+		dp-pwr-supply = <&dp_pwr_3v3>;
+
+		port {
+			dp_connector_in: endpoint {
+				remote-endpoint = <&dp0_out>;
+			};
+		};
+	};
 };
 
 &main_pmx0 {
@@ -638,6 +650,8 @@
 &mhdp {
 	phys = <&torrent_phy_dp>;
 	phy-names = "dpphy";
+	pinctrl-names = "default";
+	pinctrl-0 = <&dp0_pins_default>;
 };
 
 &usbss0 {
@@ -718,6 +732,33 @@
 				 <&k3_clks 152 18>;	/* DPI1_EXT_CLKSEL_OUT0 */
 };
 
+&dss_ports {
+	port {
+		dpi0_out: endpoint {
+			remote-endpoint = <&dp0_in>;
+		};
+	};
+};
+
+&dp0_ports {
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	port@0 {
+		reg = <0>;
+		dp0_in: endpoint {
+			remote-endpoint = <&dpi0_out>;
+		};
+	};
+
+	port@4 {
+		reg = <4>;
+		dp0_out: endpoint {
+			remote-endpoint = <&dp_connector_in>;
+		};
+	};
+};
+
 &mcasp0 {
 	/* Unused */
 	status = "disabled";
@@ -852,10 +893,6 @@
 	status = "disabled";
 };
 
-&dss {
-	status = "disabled";
-};
-
 &icssg0_mdio {
 	status = "disabled";
 };
-- 
2.17.1

[PATCH 2/2] arm64: dts: ti: k3-j721e-sk: Enable HDMI

[Rahul T R]

Add node for dvi bridge and the endpoint nodes to
describe connection from
DSS => TI TFP410 DPI-to-DVI Bridge => HDMI connector.
Also add the required pinmux for HDMI hotplug and
powerdown

Signed-off-by: Rahul T R <r-ravikumar@ti.com>
---
 arch/arm64/boot/dts/ti/k3-j721e-sk.dts | 80 +++++++++++++++++++++++++-
 1 file changed, 79 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/ti/k3-j721e-sk.dts b/arch/arm64/boot/dts/ti/k3-j721e-sk.dts
index 07b1e40fbc47..27a5911dfa8f 100644
--- a/arch/arm64/boot/dts/ti/k3-j721e-sk.dts
+++ b/arch/arm64/boot/dts/ti/k3-j721e-sk.dts
@@ -225,6 +225,59 @@
 			};
 		};
 	};
+
+	hdmi-connector {
+		compatible = "hdmi-connector";
+		label = "hdmi";
+		type = "a";
+
+		pinctrl-names = "default";
+		pinctrl-0 = <&hdmi_hpd_pins_default>;
+
+		ddc-i2c-bus = <&main_i2c1>;
+
+		/* HDMI_HPD */
+		hpd-gpios = <&main_gpio1 0 GPIO_ACTIVE_HIGH>;
+
+		port {
+			hdmi_connector_in: endpoint {
+				remote-endpoint = <&tfp410_out>;
+			};
+		};
+	};
+
+	dvi-bridge {
+		compatible = "ti,tfp410";
+
+		pinctrl-names = "default";
+		pinctrl-0 = <&hdmi_pdn_pins_default>;
+
+		powerdown-gpios = <&main_gpio0 127 GPIO_ACTIVE_LOW>;
+		ti,deskew = <0>;
+
+		ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			port@0 {
+				reg = <0>;
+
+				tfp410_in: endpoint {
+					remote-endpoint = <&dpi_out0>;
+					pclk-sample = <1>;
+				};
+			};
+
+			port@1 {
+				reg = <1>;
+
+				tfp410_out: endpoint {
+					remote-endpoint =
+						<&hdmi_connector_in>;
+				};
+			};
+		};
+	};
 };
 
 &main_pmx0 {
@@ -329,6 +382,18 @@
 		>;
 	};
 
+	hdmi_hpd_pins_default: hdmi-hpd-pins-default {
+		pinctrl-single,pins = <
+			J721E_IOPAD(0x204, PIN_INPUT, 7) /* (AD5) UART1_RTSn.GPIO1_0 */
+		>;
+	};
+
+	hdmi_pdn_pins_default: hdmi-pdn-pins-default {
+		pinctrl-single,pins = <
+			J721E_IOPAD(0x200, PIN_INPUT, 7) /* (AC4) UART1_CTSn.GPIO0_127 */
+		>;
+	};
+
 	/* Reset for M.2 E Key slot on PCIe0  */
 	ekey_reset_pins_default: ekey-reset-pns-pins-default {
 		pinctrl-single,pins = <
@@ -733,11 +798,24 @@
 };
 
 &dss_ports {
-	port {
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	port@0  {
+		reg = <0>;
+
 		dpi0_out: endpoint {
 			remote-endpoint = <&dp0_in>;
 		};
 	};
+
+	port@1 {
+		reg = <1>;
+
+		dpi_out0: endpoint {
+			remote-endpoint = <&tfp410_in>;
+		};
+	};
 };
 
 &dp0_ports {
-- 
2.17.1