[PATCH v7 0/5] Add CPSW2G and CPSW9G nodes for J784S4

[PATCH v7 0/5] Add CPSW2G and CPSW9G nodes for J784S4

[Chintan Vankar]

This series adds device-tree nodes for CPSW2G and CPSW9G instance
of the CPSW Ethernet Switch on TI's J784S4 SoC. Additionally,
two device-tree overlays are also added:
1. QSGMII mode with the CPSW9G instance via the ENET EXPANSION 1
   connector.
2. USXGMII mode with MAC Ports 1 and 2 of the CPSW9G instance via
   ENET EXPANSION 1 and 2 connectors, configured in fixed-link
   mode of operation at 5Gbps link speed.

This series is based on linux-next tagged next-20240502.

Link to v6:
https://lore.kernel.org/r/20240329053130.2822129-1-c-vankar@ti.com/

Changes from v6 to v7:
- Corrected the syntax error in [PATCH v6 5/5].

Chintan Vankar (1):
  arm64: dts: ti: k3-j784s4-evm: Add alias for MCU CPSW2G

Siddharth Vadapalli (4):
  arm64: dts: ti: k3-j784s4-main: Add CPSW2G and CPSW9G nodes
  arm64: dts: ti: k3-j784s4-evm: Enable Main CPSW2G node and add aliases
    for it
  arm64: dts: ti: k3-j784s4: Add overlay to enable QSGMII mode with
    CPSW9G
  arm64: dts: ti: k3-j784s4: Add overlay for dual port USXGMII mode

 arch/arm64/boot/dts/ti/Makefile               |  11 +-
 .../ti/k3-j784s4-evm-quad-port-eth-exp1.dtso  | 147 ++++++++++++++
 .../ti/k3-j784s4-evm-usxgmii-exp1-exp2.dtso   |  81 ++++++++
 arch/arm64/boot/dts/ti/k3-j784s4-evm.dts      |  51 +++++
 arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi    | 187 ++++++++++++++++++
 5 files changed, 476 insertions(+), 1 deletion(-)
 create mode 100644 arch/arm64/boot/dts/ti/k3-j784s4-evm-quad-port-eth-exp1.dtso
 create mode 100644 arch/arm64/boot/dts/ti/k3-j784s4-evm-usxgmii-exp1-exp2.dtso

-- 
2.34.1

[PATCH v7 1/5] arm64: dts: ti: k3-j784s4-evm: Add alias for MCU CPSW2G

[Chintan Vankar]

Add alias for the MCU CPSW2G port to enable Linux to fetch MAC Address
for the port directly from U-Boot.

Signed-off-by: Chintan Vankar <c-vankar@ti.com>
---

Link to v6:
https://lore.kernel.org/r/20240329053130.2822129-2-c-vankar@ti.com/

Changes from v6 to v7:
- No changes.

 arch/arm64/boot/dts/ti/k3-j784s4-evm.dts | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/boot/dts/ti/k3-j784s4-evm.dts b/arch/arm64/boot/dts/ti/k3-j784s4-evm.dts
index d511b25d62e3..2fe6a582ceab 100644
--- a/arch/arm64/boot/dts/ti/k3-j784s4-evm.dts
+++ b/arch/arm64/boot/dts/ti/k3-j784s4-evm.dts
@@ -27,6 +27,7 @@ aliases {
 		mmc1 = &main_sdhci1;
 		i2c0 = &wkup_i2c0;
 		i2c3 = &main_i2c0;
+		ethernet0 = &mcu_cpsw_port1;
 	};
 
 	memory@80000000 {
-- 
2.34.1

[PATCH v7 2/5] arm64: dts: ti: k3-j784s4-main: Add CPSW2G and CPSW9G nodes

[Chintan Vankar]

From: Siddharth Vadapalli <s-vadapalli@ti.com>

J784S4 SoC has MAIN CPSW2G and CPSW9G instances of the CPSW
Ethernet Switch. CPSW2G has 1 external port and 1 host port
while CPSW9G has 8 external ports and 1 host port.

Add device-tree nodes for MAIN CPSW2G and CPSW9G and disable
them by default. MAIN CPSW2G will be enabled in the board file
while device-tree overlays will be used to enable CPSW9G.

Signed-off-by: Siddharth Vadapalli <s-vadapalli@ti.com>
Signed-off-by: Chintan Vankar <c-vankar@ti.com>
---

Link to v6:
https://lore.kernel.org/r/20240329053130.2822129-3-c-vankar@ti.com/

Changes from v6 to v7:
- No changes.

 arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi | 187 +++++++++++++++++++++
 1 file changed, 187 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi b/arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi
index 6a4554c6c9c1..e44ae0cfd457 100644
--- a/arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi
@@ -48,6 +48,19 @@ scm_conf: bus@100000 {
 		#size-cells = <1>;
 		ranges = <0x00 0x00 0x00100000 0x1c000>;
 
+		cpsw1_phy_gmii_sel: phy@4034 {
+			compatible = "ti,am654-phy-gmii-sel";
+			reg = <0x4034 0x4>;
+			#phy-cells = <1>;
+		};
+
+		cpsw0_phy_gmii_sel: phy@4044 {
+			compatible = "ti,j784s4-cpsw9g-phy-gmii-sel";
+			reg = <0x4044 0x20>;
+			#phy-cells = <1>;
+			ti,qsgmii-main-ports = <7>, <7>;
+		};
+
 		serdes_ln_ctrl: mux-controller@4080 {
 			compatible = "reg-mux";
 			reg = <0x00004080 0x30>;
@@ -1427,6 +1440,180 @@ cpts@310d0000 {
 		};
 	};
 
+	main_cpsw0: ethernet@c000000 {
+		compatible = "ti,j784s4-cpswxg-nuss";
+		reg = <0x00 0xc000000 0x00 0x200000>;
+		reg-names = "cpsw_nuss";
+		ranges = <0x00 0x00 0x00 0xc000000 0x00 0x200000>;
+		#address-cells = <2>;
+		#size-cells = <2>;
+		dma-coherent;
+		clocks = <&k3_clks 64 0>;
+		clock-names = "fck";
+		power-domains = <&k3_pds 64 TI_SCI_PD_EXCLUSIVE>;
+
+		dmas = <&main_udmap 0xca00>,
+		       <&main_udmap 0xca01>,
+		       <&main_udmap 0xca02>,
+		       <&main_udmap 0xca03>,
+		       <&main_udmap 0xca04>,
+		       <&main_udmap 0xca05>,
+		       <&main_udmap 0xca06>,
+		       <&main_udmap 0xca07>,
+		       <&main_udmap 0x4a00>;
+		dma-names = "tx0", "tx1", "tx2", "tx3",
+			    "tx4", "tx5", "tx6", "tx7",
+			    "rx";
+
+		status = "disabled";
+
+		ethernet-ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			main_cpsw0_port1: port@1 {
+				reg = <1>;
+				label = "port1";
+				ti,mac-only;
+				status = "disabled";
+			};
+
+			main_cpsw0_port2: port@2 {
+				reg = <2>;
+				label = "port2";
+				ti,mac-only;
+				status = "disabled";
+			};
+
+			main_cpsw0_port3: port@3 {
+				reg = <3>;
+				label = "port3";
+				ti,mac-only;
+				status = "disabled";
+			};
+
+			main_cpsw0_port4: port@4 {
+				reg = <4>;
+				label = "port4";
+				ti,mac-only;
+				status = "disabled";
+			};
+
+			main_cpsw0_port5: port@5 {
+				reg = <5>;
+				label = "port5";
+				ti,mac-only;
+				status = "disabled";
+			};
+
+			main_cpsw0_port6: port@6 {
+				reg = <6>;
+				label = "port6";
+				ti,mac-only;
+				status = "disabled";
+			};
+
+			main_cpsw0_port7: port@7 {
+				reg = <7>;
+				label = "port7";
+				ti,mac-only;
+				status = "disabled";
+			};
+
+			main_cpsw0_port8: port@8 {
+				reg = <8>;
+				label = "port8";
+				ti,mac-only;
+				status = "disabled";
+			};
+		};
+
+		main_cpsw0_mdio: mdio@f00 {
+			compatible = "ti,cpsw-mdio","ti,davinci_mdio";
+			reg = <0x00 0xf00 0x00 0x100>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			clocks = <&k3_clks 64 0>;
+			clock-names = "fck";
+			bus_freq = <1000000>;
+			status = "disabled";
+		};
+
+		cpts@3d000 {
+			compatible = "ti,am65-cpts";
+			reg = <0x00 0x3d000 0x00 0x400>;
+			clocks = <&k3_clks 64 3>;
+			clock-names = "cpts";
+			interrupts-extended = <&gic500 GIC_SPI 16 IRQ_TYPE_LEVEL_HIGH>;
+			interrupt-names = "cpts";
+			ti,cpts-ext-ts-inputs = <4>;
+			ti,cpts-periodic-outputs = <2>;
+		};
+	};
+
+	main_cpsw1: ethernet@c200000 {
+		compatible = "ti,j721e-cpsw-nuss";
+		reg = <0x00 0xc200000 0x00 0x200000>;
+		reg-names = "cpsw_nuss";
+		ranges = <0x00 0x00 0x00 0xc200000 0x00 0x200000>;
+		#address-cells = <2>;
+		#size-cells = <2>;
+		dma-coherent;
+		clocks = <&k3_clks 62 0>;
+		clock-names = "fck";
+		power-domains = <&k3_pds 62 TI_SCI_PD_EXCLUSIVE>;
+
+		dmas = <&main_udmap 0xc640>,
+			<&main_udmap 0xc641>,
+			<&main_udmap 0xc642>,
+			<&main_udmap 0xc643>,
+			<&main_udmap 0xc644>,
+			<&main_udmap 0xc645>,
+			<&main_udmap 0xc646>,
+			<&main_udmap 0xc647>,
+			<&main_udmap 0x4640>;
+		dma-names = "tx0", "tx1", "tx2", "tx3",
+				"tx4", "tx5", "tx6", "tx7",
+				"rx";
+
+		status = "disabled";
+
+		ethernet-ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			main_cpsw1_port1: port@1 {
+				reg = <1>;
+				label = "port1";
+				phys = <&cpsw1_phy_gmii_sel 1>;
+				ti,mac-only;
+				status = "disabled";
+			};
+		};
+
+		main_cpsw1_mdio: mdio@f00 {
+			compatible = "ti,cpsw-mdio", "ti,davinci_mdio";
+			reg = <0x00 0xf00 0x00 0x100>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			clocks = <&k3_clks 62 0>;
+			clock-names = "fck";
+			bus_freq = <1000000>;
+			status = "disabled";
+		};
+
+		cpts@3d000 {
+			compatible = "ti,am65-cpts";
+			reg = <0x00 0x3d000 0x00 0x400>;
+			clocks = <&k3_clks 62 3>;
+			clock-names = "cpts";
+			interrupts-extended = <&gic500 GIC_SPI 21 IRQ_TYPE_LEVEL_HIGH>;
+			interrupt-names = "cpts";
+			ti,cpts-ext-ts-inputs = <4>;
+			ti,cpts-periodic-outputs = <2>;
+		};
+	};
+
 	main_mcan0: can@2701000 {
 		compatible = "bosch,m_can";
 		reg = <0x00 0x02701000 0x00 0x200>,
-- 
2.34.1

[PATCH v7 3/5] arm64: dts: ti: k3-j784s4-evm: Enable Main CPSW2G node and add aliases for it

[Chintan Vankar]

From: Siddharth Vadapalli <s-vadapalli@ti.com>

Enable MAIN CPSW2G and add alias for it to enable Linux to fetch
MAC Address for the port directly from U-Boot.

Signed-off-by: Siddharth Vadapalli <s-vadapalli@ti.com>
Signed-off-by: Jayesh Choudhary <j-choudhary@ti.com>
Signed-off-by: Chintan Vankar <c-vankar@ti.com>
---

Link to v6:
https://lore.kernel.org/r/20240329053130.2822129-4-c-vankar@ti.com/

Changes from v6 to v7:
- No changes.

 arch/arm64/boot/dts/ti/k3-j784s4-evm.dts | 50 ++++++++++++++++++++++++
 1 file changed, 50 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-j784s4-evm.dts b/arch/arm64/boot/dts/ti/k3-j784s4-evm.dts
index 2fe6a582ceab..bc5c22383105 100644
--- a/arch/arm64/boot/dts/ti/k3-j784s4-evm.dts
+++ b/arch/arm64/boot/dts/ti/k3-j784s4-evm.dts
@@ -28,6 +28,7 @@ aliases {
 		i2c0 = &wkup_i2c0;
 		i2c3 = &main_i2c0;
 		ethernet0 = &mcu_cpsw_port1;
+		ethernet1 = &main_cpsw1_port1;
 	};
 
 	memory@80000000 {
@@ -281,6 +282,30 @@ &wkup_gpio0 {
 
 &main_pmx0 {
 	bootph-all;
+	main_cpsw2g_default_pins: main-cpsw2g-default-pins {
+		pinctrl-single,pins = <
+			J784S4_IOPAD(0x0b8, PIN_INPUT, 6) /* (AC34) MCASP1_ACLKX.RGMII1_RD0 */
+			J784S4_IOPAD(0x0a0, PIN_INPUT, 6) /* (AD34) MCASP0_AXR12.RGMII1_RD1 */
+			J784S4_IOPAD(0x0a4, PIN_INPUT, 6) /* (AJ36) MCASP0_AXR13.RGMII1_RD2 */
+			J784S4_IOPAD(0x0a8, PIN_INPUT, 6) /* (AF34) MCASP0_AXR14.RGMII1_RD3 */
+			J784S4_IOPAD(0x0b0, PIN_INPUT, 6) /* (AL33) MCASP1_AXR3.RGMII1_RXC */
+			J784S4_IOPAD(0x0ac, PIN_INPUT, 6) /* (AE34) MCASP0_AXR15.RGMII1_RX_CTL */
+			J784S4_IOPAD(0x08c, PIN_INPUT, 6) /* (AE35) MCASP0_AXR7.RGMII1_TD0 */
+			J784S4_IOPAD(0x090, PIN_INPUT, 6) /* (AC35) MCASP0_AXR8.RGMII1_TD1 */
+			J784S4_IOPAD(0x094, PIN_INPUT, 6) /* (AG35) MCASP0_AXR9.RGMII1_TD2 */
+			J784S4_IOPAD(0x098, PIN_INPUT, 6) /* (AH36) MCASP0_AXR10.RGMII1_TD3 */
+			J784S4_IOPAD(0x0b4, PIN_INPUT, 6) /* (AL34) MCASP1_AXR4.RGMII1_TXC */
+			J784S4_IOPAD(0x09c, PIN_INPUT, 6) /* (AF35) MCASP0_AXR11.RGMII1_TX_CTL */
+		>;
+	};
+
+	main_cpsw2g_mdio_default_pins: main-cpsw2g-mdio-default-pins {
+		pinctrl-single,pins = <
+			J784S4_IOPAD(0x0c0, PIN_INPUT, 6) /* (AD38) MCASP1_AXR0.MDIO0_MDC */
+			J784S4_IOPAD(0x0bc, PIN_INPUT, 6) /* (AD33) MCASP1_AFSX.MDIO0_MDIO */
+		>;
+	};
+
 	main_uart8_pins_default: main-uart8-default-pins {
 		bootph-all;
 		pinctrl-single,pins = <
@@ -833,6 +858,31 @@ &mcu_cpsw_port1 {
 	phy-handle = <&mcu_phy0>;
 };
 
+&main_cpsw1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&main_cpsw2g_default_pins>;
+	status = "okay";
+};
+
+&main_cpsw1_mdio {
+	pinctrl-names = "default";
+	pinctrl-0 = <&main_cpsw2g_mdio_default_pins>;
+	status = "okay";
+
+	main_cpsw1_phy0: ethernet-phy@0 {
+		reg = <0>;
+		ti,rx-internal-delay = <DP83867_RGMIIDCTL_2_00_NS>;
+		ti,fifo-depth = <DP83867_PHYCR_FIFO_DEPTH_4_B_NIB>;
+		ti,min-output-impedance;
+	};
+};
+
+&main_cpsw1_port1 {
+	phy-mode = "rgmii-rxid";
+	phy-handle = <&main_cpsw1_phy0>;
+	status = "okay";
+};
+
 &mailbox0_cluster0 {
 	status = "okay";
 	interrupts = <436>;
-- 
2.34.1

[PATCH v7 4/5] arm64: dts: ti: k3-j784s4: Add overlay to enable QSGMII mode with CPSW9G

[Chintan Vankar]

From: Siddharth Vadapalli <s-vadapalli@ti.com>

The J7 Quad Port Add-On Ethernet Card for J784S4 EVM supports
QSGMII mode. Use the overlay to configure CPSW9G ports in QSGMII
mode with the Add-On Ethernet Card connected to the ENET Expansion
1 slot on the EVM.

Add support to reset the PHY from kernel by using gpio-hog and
gpio-reset.

Add aliases for CPSW9G ports to enable kernel to fetch MAC Addresses
directly from U-Boot.

Signed-off-by: Siddharth Vadapalli <s-vadapalli@ti.com>
Signed-off-by: Chintan Vankar <c-vankar@ti.com>
---

Link to v6:
https://lore.kernel.org/r/20240329053130.2822129-5-c-vankar@ti.com/

Changes from v6 to v7:
- No changes.

 arch/arm64/boot/dts/ti/Makefile               |   7 +-
 .../ti/k3-j784s4-evm-quad-port-eth-exp1.dtso  | 147 ++++++++++++++++++
 2 files changed, 153 insertions(+), 1 deletion(-)
 create mode 100644 arch/arm64/boot/dts/ti/k3-j784s4-evm-quad-port-eth-exp1.dtso

diff --git a/arch/arm64/boot/dts/ti/Makefile b/arch/arm64/boot/dts/ti/Makefile
index 2c327cc320cf..bb3ca0d17788 100644
--- a/arch/arm64/boot/dts/ti/Makefile
+++ b/arch/arm64/boot/dts/ti/Makefile
@@ -101,6 +101,7 @@ dtb-$(CONFIG_ARCH_K3) += k3-j722s-evm.dtb
 # Boards with J784s4 SoC
 dtb-$(CONFIG_ARCH_K3) += k3-am69-sk.dtb
 dtb-$(CONFIG_ARCH_K3) += k3-j784s4-evm.dtb
+dtb-$(CONFIG_ARCH_K3) += k3-j784s4-evm-quad-port-eth-exp1.dtbo
 
 # Build time test only, enabled by CONFIG_OF_ALL_DTBS
 k3-am625-beagleplay-csi2-ov5640-dtbs := k3-am625-beagleplay.dtb \
@@ -148,6 +149,8 @@ k3-j721e-sk-csi2-dual-imx219-dtbs := k3-j721e-sk.dtb \
 	k3-j721e-sk-csi2-dual-imx219.dtbo
 k3-j721s2-evm-pcie1-ep-dtbs := k3-j721s2-common-proc-board.dtb \
 	k3-j721s2-evm-pcie1-ep.dtbo
+k3-j784s4-evm-quad-port-eth-exp1-dtbs := k3-j784s4-evm.dtb \
+	k3-j784s4-evm-quad-port-eth-exp1.dtbo
 dtb- += k3-am625-beagleplay-csi2-ov5640.dtb \
 	k3-am625-beagleplay-csi2-tevi-ov5640.dtb \
 	k3-am625-sk-csi2-imx219.dtb \
@@ -168,7 +171,8 @@ dtb- += k3-am625-beagleplay-csi2-ov5640.dtb \
 	k3-am69-sk-csi2-dual-imx219.dtb \
 	k3-j721e-evm-pcie0-ep.dtb \
 	k3-j721e-sk-csi2-dual-imx219.dtb \
-	k3-j721s2-evm-pcie1-ep.dtb
+	k3-j721s2-evm-pcie1-ep.dtb \
+	k3-j784s4-evm-quad-port-eth-exp1.dtb
 
 # Enable support for device-tree overlays
 DTC_FLAGS_k3-am625-beagleplay += -@
@@ -186,3 +190,4 @@ DTC_FLAGS_k3-am69-sk += -@
 DTC_FLAGS_k3-j721e-common-proc-board += -@
 DTC_FLAGS_k3-j721e-sk += -@
 DTC_FLAGS_k3-j721s2-common-proc-board += -@
+DTC_FLAGS_k3-j784s4-evm += -@
diff --git a/arch/arm64/boot/dts/ti/k3-j784s4-evm-quad-port-eth-exp1.dtso b/arch/arm64/boot/dts/ti/k3-j784s4-evm-quad-port-eth-exp1.dtso
new file mode 100644
index 000000000000..dcd2c7c39ec3
--- /dev/null
+++ b/arch/arm64/boot/dts/ti/k3-j784s4-evm-quad-port-eth-exp1.dtso
@@ -0,0 +1,147 @@
+/* SPDX-License-Identifier: GPL-2.0-only OR MIT */
+/**
+ * DT Overlay for CPSW9G in QSGMII mode using J7 Quad Port ETH EXP Add-On Ethernet Card with
+ * J784S4 EVM. The Add-On Ethernet Card has to be connected to ENET Expansion 1 slot on the
+ * board.
+ *
+ * Product Datasheet: https://www.ti.com/lit/ug/spruj74/spruj74.pdf
+ *
+ * Link to QSGMII Daughtercard: https://www.ti.com/tool/J721EXENETXPANEVM
+ *
+ * Copyright (C) 2024 Texas Instruments Incorporated - https://www.ti.com/
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/phy/phy-cadence.h>
+#include <dt-bindings/phy/phy.h>
+
+#include "k3-pinctrl.h"
+#include "k3-serdes.h"
+
+&{/} {
+	aliases {
+		ethernet1 = "/bus@100000/ethernet@c000000/ethernet-ports/port@5";
+		ethernet2 = "/bus@100000/ethernet@c000000/ethernet-ports/port@6";
+		ethernet3 = "/bus@100000/ethernet@c000000/ethernet-ports/port@7";
+		ethernet4 = "/bus@100000/ethernet@c000000/ethernet-ports/port@8";
+		ethernet5 = "/bus@100000/ethernet@c200000/ethernet-ports/port@1";
+	};
+};
+
+&main_cpsw0 {
+	status = "okay";
+};
+
+&main_cpsw0_port5 {
+	phy-handle = <&cpsw9g_phy1>;
+	phy-mode = "qsgmii";
+	mac-address = [00 00 00 00 00 00];
+	phys = <&cpsw0_phy_gmii_sel 5>, <&serdes2_qsgmii_link>;
+	phy-names = "mac", "serdes";
+	status = "okay";
+};
+
+&main_cpsw0_port6 {
+	phy-handle = <&cpsw9g_phy2>;
+	phy-mode = "qsgmii";
+	mac-address = [00 00 00 00 00 00];
+	phys = <&cpsw0_phy_gmii_sel 6>, <&serdes2_qsgmii_link>;
+	phy-names = "mac", "serdes";
+	status = "okay";
+};
+
+&main_cpsw0_port7 {
+	phy-handle = <&cpsw9g_phy0>;
+	phy-mode = "qsgmii";
+	mac-address = [00 00 00 00 00 00];
+	phys = <&cpsw0_phy_gmii_sel 7>, <&serdes2_qsgmii_link>;
+	phy-names = "mac", "serdes";
+	status = "okay";
+};
+
+&main_cpsw0_port8 {
+	phy-handle = <&cpsw9g_phy3>;
+	phy-mode = "qsgmii";
+	mac-address = [00 00 00 00 00 00];
+	phys = <&cpsw0_phy_gmii_sel 8>, <&serdes2_qsgmii_link>;
+	phy-names = "mac", "serdes";
+	status = "okay";
+};
+
+&main_cpsw0_mdio {
+	pinctrl-names = "default";
+	pinctrl-0 = <&mdio0_default_pins>;
+	bus_freq = <1000000>;
+	reset-gpios = <&exp2 17 GPIO_ACTIVE_LOW>;
+	reset-post-delay-us = <120000>;
+	#address-cells = <1>;
+	#size-cells = <0>;
+	status = "okay";
+
+	cpsw9g_phy0: ethernet-phy@16 {
+		reg = <16>;
+	};
+	cpsw9g_phy1: ethernet-phy@17 {
+		reg = <17>;
+	};
+	cpsw9g_phy2: ethernet-phy@18 {
+		reg = <18>;
+	};
+	cpsw9g_phy3: ethernet-phy@19 {
+		reg = <19>;
+	};
+};
+
+&exp2 {
+	/* Power-up ENET1 EXPANDER PHY. */
+	qsgmii-line-hog {
+		gpio-hog;
+		gpios = <16 GPIO_ACTIVE_HIGH>;
+		output-low;
+	};
+
+	/* Toggle MUX2 for MDIO lines */
+	mux-sel-hog {
+		gpio-hog;
+		gpios = <13 GPIO_ACTIVE_HIGH>, <14 GPIO_ACTIVE_HIGH>, <15 GPIO_ACTIVE_HIGH>;
+		output-high;
+	};
+};
+
+&main_pmx0 {
+	mdio0_default_pins: mdio0-default-pins {
+		pinctrl-single,pins = <
+			J784S4_IOPAD(0x05c, PIN_INPUT, 4) /* (AC36) MCASP2_AXR0.MDIO1_MDIO */
+			J784S4_IOPAD(0x058, PIN_INPUT, 4) /* (AE37) MCASP2_AFSX.MDIO1_MDC */
+		>;
+	};
+};
+
+&serdes_ln_ctrl {
+	idle-states = <J784S4_SERDES0_LANE0_PCIE1_LANE0>, <J784S4_SERDES0_LANE1_PCIE1_LANE1>,
+		      <J784S4_SERDES0_LANE2_IP3_UNUSED>, <J784S4_SERDES0_LANE3_USB>,
+		      <J784S4_SERDES1_LANE0_PCIE0_LANE0>, <J784S4_SERDES1_LANE1_PCIE0_LANE1>,
+		      <J784S4_SERDES1_LANE2_PCIE0_LANE2>, <J784S4_SERDES1_LANE3_PCIE0_LANE3>,
+		      <J784S4_SERDES2_LANE0_QSGMII_LANE5>, <J784S4_SERDES2_LANE1_QSGMII_LANE6>,
+		      <J784S4_SERDES2_LANE2_QSGMII_LANE7>, <J784S4_SERDES2_LANE3_QSGMII_LANE8>;
+};
+
+&serdes_wiz2 {
+	status = "okay";
+};
+
+&serdes2 {
+	#address-cells = <1>;
+	#size-cells = <0>;
+	status = "okay";
+	serdes2_qsgmii_link: phy@0 {
+		reg = <2>;
+		cdns,num-lanes = <1>;
+		#phy-cells = <0>;
+		cdns,phy-type = <PHY_TYPE_QSGMII>;
+		resets = <&serdes_wiz2 3>;
+	};
+};
-- 
2.34.1

[PATCH v7 5/5] arm64: dts: ti: k3-j784s4: Add overlay for dual port USXGMII mode

[Chintan Vankar]

From: Siddharth Vadapalli <s-vadapalli@ti.com>

The CPSW9G instance of the CPSW Ethernet Switch supports USXGMII mode
with MAC Ports 1 and 2 of the instance, which are connected to ENET
Expansion 1 and ENET Expansion 2 slots on the EVM respectively, through
the Serdes2 instance of the SERDES.

Enable CPSW9G MAC Ports 1 and 2 in fixed-link configuration USXGMII mode
at 5 Gbps each.

Signed-off-by: Siddharth Vadapalli <s-vadapalli@ti.com>
Signed-off-by: Chintan Vankar <c-vankar@ti.com>
---

Link to v6:
https://lore.kernel.org/r/20240329053130.2822129-6-c-vankar@ti.com/

Changes from v6 to v7:
- Corrected the syntax error in Makefile.

 arch/arm64/boot/dts/ti/Makefile               |  6 +-
 .../ti/k3-j784s4-evm-usxgmii-exp1-exp2.dtso   | 81 +++++++++++++++++++
 2 files changed, 86 insertions(+), 1 deletion(-)
 create mode 100644 arch/arm64/boot/dts/ti/k3-j784s4-evm-usxgmii-exp1-exp2.dtso

diff --git a/arch/arm64/boot/dts/ti/Makefile b/arch/arm64/boot/dts/ti/Makefile
index bb3ca0d17788..c4f72004581a 100644
--- a/arch/arm64/boot/dts/ti/Makefile
+++ b/arch/arm64/boot/dts/ti/Makefile
@@ -102,6 +102,7 @@ dtb-$(CONFIG_ARCH_K3) += k3-j722s-evm.dtb
 dtb-$(CONFIG_ARCH_K3) += k3-am69-sk.dtb
 dtb-$(CONFIG_ARCH_K3) += k3-j784s4-evm.dtb
 dtb-$(CONFIG_ARCH_K3) += k3-j784s4-evm-quad-port-eth-exp1.dtbo
+dtb-$(CONFIG_ARCH_K3) += k3-j784s4-evm-usxgmii-exp1-exp2.dtbo
 
 # Build time test only, enabled by CONFIG_OF_ALL_DTBS
 k3-am625-beagleplay-csi2-ov5640-dtbs := k3-am625-beagleplay.dtb \
@@ -151,6 +152,8 @@ k3-j721s2-evm-pcie1-ep-dtbs := k3-j721s2-common-proc-board.dtb \
 	k3-j721s2-evm-pcie1-ep.dtbo
 k3-j784s4-evm-quad-port-eth-exp1-dtbs := k3-j784s4-evm.dtb \
 	k3-j784s4-evm-quad-port-eth-exp1.dtbo
+k3-j784s4-evm-usxgmii-exp1-exp2-dtbs := k3-j784s4-evm.dtb \
+	k3-j784s4-evm-usxgmii-exp1-exp2.dtbo
 dtb- += k3-am625-beagleplay-csi2-ov5640.dtb \
 	k3-am625-beagleplay-csi2-tevi-ov5640.dtb \
 	k3-am625-sk-csi2-imx219.dtb \
@@ -172,7 +175,8 @@ dtb- += k3-am625-beagleplay-csi2-ov5640.dtb \
 	k3-j721e-evm-pcie0-ep.dtb \
 	k3-j721e-sk-csi2-dual-imx219.dtb \
 	k3-j721s2-evm-pcie1-ep.dtb \
-	k3-j784s4-evm-quad-port-eth-exp1.dtb
+	k3-j784s4-evm-quad-port-eth-exp1.dtb \
+	k3-j784s4-evm-usxgmii-exp1-exp2.dtb
 
 # Enable support for device-tree overlays
 DTC_FLAGS_k3-am625-beagleplay += -@
diff --git a/arch/arm64/boot/dts/ti/k3-j784s4-evm-usxgmii-exp1-exp2.dtso b/arch/arm64/boot/dts/ti/k3-j784s4-evm-usxgmii-exp1-exp2.dtso
new file mode 100644
index 000000000000..d5f8c8531923
--- /dev/null
+++ b/arch/arm64/boot/dts/ti/k3-j784s4-evm-usxgmii-exp1-exp2.dtso
@@ -0,0 +1,81 @@
+/* SPDX-License-Identifier: GPL-2.0-only OR MIT */
+/**
+ * DT Overlay for CPSW9G in dual port fixed-link USXGMII mode using ENET-1
+ * and ENET-2 Expansion slots of J784S4 EVM.
+ *
+ * Copyright (C) 2024 Texas Instruments Incorporated - https://www.ti.com/
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/phy/phy-cadence.h>
+#include <dt-bindings/phy/phy.h>
+
+#include "k3-serdes.h"
+
+&{/} {
+	aliases {
+		ethernet1 = "/bus@100000/ethernet@c000000/ethernet-ports/port@1";
+		ethernet2 = "/bus@100000/ethernet@c000000/ethernet-ports/port@2";
+		ethernet3 = "/bus@100000/ethernet@c200000/ethernet-ports/port@1";
+	};
+};
+
+&main_cpsw0 {
+	pinctrl-names = "default";
+	status = "okay";
+};
+
+&main_cpsw0_port1 {
+	phy-mode = "usxgmii";
+	mac-address = [00 00 00 00 00 00];
+	phys = <&cpsw0_phy_gmii_sel 1>, <&serdes2_usxgmii_link>;
+	phy-names = "mac", "serdes";
+	status = "okay";
+	fixed-link {
+		speed = <5000>;
+		full-duplex;
+	};
+};
+
+&main_cpsw0_port2 {
+	phy-mode = "usxgmii";
+	mac-address = [00 00 00 00 00 00];
+	phys = <&cpsw0_phy_gmii_sel 2>, <&serdes2_usxgmii_link>;
+	phy-names = "mac", "serdes";
+	status = "okay";
+	fixed-link {
+		speed = <5000>;
+		full-duplex;
+	};
+};
+
+&serdes_wiz2 {
+	assigned-clock-parents = <&k3_clks 406 9>; /* Use 156.25 MHz clock for USXGMII */
+	status = "okay";
+};
+
+&serdes2 {
+	#address-cells = <1>;
+	#size-cells = <0>;
+	status = "okay";
+
+	serdes2_usxgmii_link: phy@2 {
+		reg = <2>;
+		cdns,num-lanes = <2>;
+		#phy-cells = <0>;
+		cdns,phy-type = <PHY_TYPE_USXGMII>;
+		resets = <&serdes_wiz2 3>, <&serdes_wiz2 4>;
+	};
+};
+
+&serdes_ln_ctrl {
+	idle-states = <J784S4_SERDES0_LANE0_PCIE1_LANE0>, <J784S4_SERDES0_LANE1_PCIE1_LANE1>,
+		      <J784S4_SERDES0_LANE2_IP3_UNUSED>, <J784S4_SERDES0_LANE3_USB>,
+		      <J784S4_SERDES1_LANE0_PCIE0_LANE0>, <J784S4_SERDES1_LANE1_PCIE0_LANE1>,
+		      <J784S4_SERDES1_LANE2_PCIE0_LANE2>, <J784S4_SERDES1_LANE3_PCIE0_LANE3>,
+		      <J784S4_SERDES2_LANE0_IP2_UNUSED>, <J784S4_SERDES2_LANE1_IP2_UNUSED>,
+		      <J784S4_SERDES2_LANE2_QSGMII_LANE1>, <J784S4_SERDES2_LANE3_QSGMII_LANE2>;
+};
-- 
2.34.1

Re: [PATCH v7 0/5] Add CPSW2G and CPSW9G nodes for J784S4

[Vignesh Raghavendra]

Hi Chintan Vankar,

On Thu, 02 May 2024 14:39:57 +0530, Chintan Vankar wrote:
> This series adds device-tree nodes for CPSW2G and CPSW9G instance
> of the CPSW Ethernet Switch on TI's J784S4 SoC. Additionally,
> two device-tree overlays are also added:
> 1. QSGMII mode with the CPSW9G instance via the ENET EXPANSION 1
>    connector.
> 2. USXGMII mode with MAC Ports 1 and 2 of the CPSW9G instance via
>    ENET EXPANSION 1 and 2 connectors, configured in fixed-link
>    mode of operation at 5Gbps link speed.
> 
> [...]

I have applied the following to branch ti-k3-dts-next on [1].
Thank you!

[1/5] arm64: dts: ti: k3-j784s4-evm: Add alias for MCU CPSW2G
      commit: 674a20618b0de1afb62622b5051a5371117a1bfd
[2/5] arm64: dts: ti: k3-j784s4-main: Add CPSW2G and CPSW9G nodes
      commit: 01bd39357b70ed41fb52b26c7e5b42de328fcdd4
[3/5] arm64: dts: ti: k3-j784s4-evm: Enable Main CPSW2G node and add aliases for it
      commit: c2834656bb6d434bf0df0de7710210fbfe7ff927
[4/5] arm64: dts: ti: k3-j784s4: Add overlay to enable QSGMII mode with CPSW9G
      commit: 4ad0beeb7ae69ae11ec53c897d0b1af1df60454c
[5/5] arm64: dts: ti: k3-j784s4: Add overlay for dual port USXGMII mode
      commit: 838ceca36b2188899a0100461799f179c53de550

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent up the chain during
the next merge window (or sooner if it is a relevant bug fix), however if
problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

[1] https://git.kernel.org/pub/scm/linux/kernel/git/ti/linux.git
--
Vignesh