[PATCH v4 1/2] arm64: dts: ti: k3-j721e-*: add DP & DP PHY

[Rahul T R]

From: Tomi Valkeinen <tomi.valkeinen@xxxxxx>

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 the required phy link nodes in the board dts files.

A slight irregularity in the bindings is the DPTX PHY register block,
which is in the MHDP IP, but is needed and mapped by the PHY.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@xxxxxx>
Signed-off-by: Rahul T R <r-ravikumar@xxxxxx>
---
 .../dts/ti/k3-j721e-common-proc-board.dts     | 16 ++++
 arch/arm64/boot/dts/ti/k3-j721e-main.dtsi     | 75 ++++++++++++++++++-
 arch/arm64/boot/dts/ti/k3-j721e-sk.dts        | 16 ++++
 3 files changed, 105 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/ti/k3-j721e-common-proc-board.dts b/arch/arm64/boot/dts/ti/k3-j721e-common-proc-board.dts
index f5ca8e26ed99..2f119e94e783 100644
--- a/arch/arm64/boot/dts/ti/k3-j721e-common-proc-board.dts
+++ b/arch/arm64/boot/dts/ti/k3-j721e-common-proc-board.dts
@@ -793,6 +793,22 @@
 	};
 };
 
+&serdes4 {
+	torrent_phy_dp: phy@0 {
+		reg = <0>;
+		resets = <&serdes_wiz4 1>;
+		cdns,phy-type = <PHY_TYPE_DP>;
+		cdns,num-lanes = <4>;
+		cdns,max-bit-rate = <5400>;
+		#phy-cells = <0>;
+	};
+};
+
+&mhdp {
+	phys = <&torrent_phy_dp>;
+	phy-names = "dpphy";
+};
+
 &pcie0_rc {
 	reset-gpios = <&exp1 6 GPIO_ACTIVE_HIGH>;
 	phys = <&serdes0_pcie_link>;
diff --git a/arch/arm64/boot/dts/ti/k3-j721e-main.dtsi b/arch/arm64/boot/dts/ti/k3-j721e-main.dtsi
index db0669985e42..43b6cf5791ee 100644
--- a/arch/arm64/boot/dts/ti/k3-j721e-main.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-j721e-main.dtsi
@@ -5,6 +5,7 @@
  * Copyright (C) 2016-2020 Texas Instruments Incorporated - https://www.ti.com/
  */
 #include <dt-bindings/phy/phy.h>
+#include <dt-bindings/phy/phy-ti.h>
 #include <dt-bindings/mux/mux.h>
 #include <dt-bindings/mux/ti-serdes.h>
 
@@ -789,6 +790,47 @@
 		#size-cells = <2>;
 	};
 
+	serdes_wiz4: wiz@5050000 {
+		compatible = "ti,am64-wiz-10g";
+		#address-cells = <1>;
+		#size-cells = <1>;
+		power-domains = <&k3_pds 297 TI_SCI_PD_EXCLUSIVE>;
+		clocks = <&k3_clks 297 1>, <&k3_clks 297 9>, <&cmn_refclk>;
+		clock-names = "fck", "core_ref_clk", "ext_ref_clk";
+		assigned-clocks = <&k3_clks 297 9>;
+		assigned-clock-parents = <&k3_clks 297 10>;
+		assigned-clock-rates = <19200000>;
+		num-lanes = <4>;
+		#reset-cells = <1>;
+		#clock-cells = <1>;
+		ranges = <0x05050000 0x00 0x05050000 0x010000>,
+			<0x0a030a00 0x00 0x0a030a00 0x40>;
+
+		serdes4: serdes@5050000 {
+			/*
+			 * Note: we also map DPTX PHY registers as the Torrent
+			 * needs to manage those.
+			 */
+			compatible = "ti,j721e-serdes-10g";
+			reg = <0x05050000 0x010000>,
+			      <0x0a030a00 0x40>; /* DPTX PHY */
+			reg-names = "torrent_phy", "dptx_phy";
+
+			resets = <&serdes_wiz4 0>;
+			reset-names = "torrent_reset";
+			clocks = <&serdes_wiz4 TI_WIZ_PLL0_REFCLK>;
+			clock-names = "refclk";
+			assigned-clocks = <&serdes_wiz4 TI_WIZ_PLL0_REFCLK>,
+					  <&serdes_wiz4 TI_WIZ_PLL1_REFCLK>,
+					  <&serdes_wiz4 TI_WIZ_REFCLK_DIG>;
+			assigned-clock-parents = <&k3_clks 297 9>,
+						 <&k3_clks 297 9>,
+						 <&k3_clks 297 9>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+		};
+	};
+
 	main_uart0: serial@2800000 {
 		compatible = "ti,j721e-uart", "ti,am654-uart";
 		reg = <0x00 0x02800000 0x00 0x100>;
@@ -1267,6 +1309,37 @@
 		};
 	};
 
+	mhdp: dp-bridge@a000000 {
+		compatible = "ti,j721e-mhdp8546";
+		/*
+		 * Note: we do not map DPTX PHY area, as that is handled by
+		 * the PHY driver.
+		 */
+		reg = <0x00 0x0a000000 0x00 0x030a00>, /* DSS_EDP0_V2A_CORE_VP_REGS_APB */
+		      <0x00 0x04f40000 0x00 0x20>;    /* DSS_EDP0_INTG_CFG_VP */
+		reg-names = "mhdptx", "j721e-intg";
+
+		clocks = <&k3_clks 151 36>;
+
+		interrupt-parent = <&gic500>;
+		interrupts = <GIC_SPI 614 IRQ_TYPE_LEVEL_HIGH>;
+
+		power-domains = <&k3_pds 151 TI_SCI_PD_EXCLUSIVE>;
+
+		dp0_ports: ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			port@0 {
+			    reg = <0>;
+			};
+
+			port@4 {
+			    reg = <4>;
+			};
+		};
+	};
+
 	dss: dss@4a00000 {
 		compatible = "ti,j721e-dss";
 		reg =
@@ -1317,8 +1390,6 @@
 				  "common_s2";
 
 		dss_ports: ports {
-			#address-cells = <1>;
-			#size-cells = <0>;
 		};
 	};
 
diff --git a/arch/arm64/boot/dts/ti/k3-j721e-sk.dts b/arch/arm64/boot/dts/ti/k3-j721e-sk.dts
index f25d85169e0d..98177a20b45f 100644
--- a/arch/arm64/boot/dts/ti/k3-j721e-sk.dts
+++ b/arch/arm64/boot/dts/ti/k3-j721e-sk.dts
@@ -624,6 +624,22 @@
 	};
 };
 
+&serdes4 {
+	torrent_phy_dp: phy@0 {
+		reg = <0>;
+		resets = <&serdes_wiz4 1>;
+		cdns,phy-type = <PHY_TYPE_DP>;
+		cdns,num-lanes = <4>;
+		cdns,max-bit-rate = <5400>;
+		#phy-cells = <0>;
+	};
+};
+
+&mhdp {
+	phys = <&torrent_phy_dp>;
+	phy-names = "dpphy";
+};
+
 &usbss0 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&main_usbss0_pins_default>;
-- 
2.17.1