linux-kernel - [PATCH 5/6] arm64: dts: ti: k3-j784s4-*: add DP & DP PHY

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Date:   Wed, 5 Apr 2023 16:44:11 +0530
From:   Jayesh Choudhary <j-choudhary@...com>
To:     <nm@...com>, <vigneshr@...com>
CC:     <s-vadapalli@...com>, <kristo@...nel.org>, <robh+dt@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <j-choudhary@...com>
Subject: [PATCH 5/6] arm64: dts: ti: k3-j784s4-*: add DP & DP PHY

From: Rahul T R <r-ravikumar@...com>

Add DT nodes for DisplayPort and DisplayPort PHY.
The DP is Cadence MHDP 8546 and the PHY is a
Cadence Torrent PHY with TI WIZ wrapper.
Also add pinmux required for DP HPD.

Signed-off-by: Rahul T R <r-ravikumar@...com>
Signed-off-by: Jayesh Choudhary <j-choudhary@...com>
---
 arch/arm64/boot/dts/ti/k3-j784s4-evm.dts   | 24 ++++++++++++++++++++++
 arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi | 22 ++++++++++++++++++++
 2 files changed, 46 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-j784s4-evm.dts b/arch/arm64/boot/dts/ti/k3-j784s4-evm.dts
index ccbfca76e9ae..2b414fd973d0 100644
--- a/arch/arm64/boot/dts/ti/k3-j784s4-evm.dts
+++ b/arch/arm64/boot/dts/ti/k3-j784s4-evm.dts
@@ -163,6 +163,12 @@ vdd_sd_dv_pins_default: vdd-sd-dv-pins-default {
 			J784S4_IOPAD(0x020, PIN_INPUT, 7) /* (AJ35) MCAN15_RX.GPIO0_8 */
 		>;
 	};
+
+	dp0_pins_default: dp0-pins-default {
+		pinctrl-single,pins = <
+			J784S4_IOPAD(0x0cc, PIN_INPUT, 12) /* (AM37) SPI0_CS0.DP0_HPD */
+		>;
+	};
 };
 
 &wkup_pmx0 {
@@ -316,3 +322,21 @@ &dss {
 				 <&k3_clks 218 16>,
 				 <&k3_clks 218 22>;
 };
+
+&serdes4 {
+	serdes4_dp_link: phy@0 {
+		reg = <0>;
+		cdns,num-lanes = <4>;
+		#phy-cells = <0>;
+		cdns,phy-type = <PHY_TYPE_DP>;
+		resets = <&serdes_wiz4 1>, <&serdes_wiz4 2>,
+			 <&serdes_wiz4 3>, <&serdes_wiz4 4>;
+	};
+};
+
+&mhdp {
+	pinctrl-names = "default";
+	pinctrl-0 = <&dp0_pins_default>;
+	phys = <&serdes4_dp_link>;
+	phy-names = "dpphy";
+};
diff --git a/arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi b/arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi
index 86ce6f6d4fc2..fc6071c16188 100644
--- a/arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi
@@ -1374,6 +1374,28 @@ main_spi7: spi@...0000 {
 		status = "disabled";
 	};
 
+	mhdp: dp-bridge@...0000 {
+		compatible = "ti,j721e-mhdp8546";
+
+		reg = <0x0 0xa000000 0x0 0x30a00>,
+		      <0x0 0x4f40000 0x0 0x20>;
+		reg-names = "mhdptx", "j721e-intg";
+
+		clocks = <&k3_clks 217 11>;
+
+		interrupt-parent = <&gic500>;
+		interrupts = <GIC_SPI 614 IRQ_TYPE_LEVEL_HIGH>;
+
+		power-domains = <&k3_pds 217 TI_SCI_PD_EXCLUSIVE>;
+
+		status = "disabled";
+
+		dp0_ports: ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+		};
+	};
+
 	dss: dss@...0000 {
 		compatible = "ti,j721e-dss";
 		reg =
-- 
2.25.1