* [RFC PATCH 0/3] Add CPSW9G DT support for J784S4
@ 2023-04-25 13:32 Siddharth Vadapalli
2023-04-25 13:32 ` [RFC PATCH 1/3] arm64: dts: ti: k3-j784s4-main: Add CPSW9G nodes Siddharth Vadapalli
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: Siddharth Vadapalli @ 2023-04-25 13:32 UTC (permalink / raw)
To: nm, vigneshr, kristo, robh+dt, krzysztof.kozlowski,
krzysztof.kozlowski+dt, afd
Cc: devicetree, linux-kernel, linux-arm-kernel, srk, s-vadapalli
Hello,
This series adds device-tree nodes for 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 top of the following series:
https://lore.kernel.org/r/20230425131607.290707-1-j-choudhary@ti.com/
This series also depends on the patch for Serdes Mux Bindings at:
https://lore.kernel.org/r/20230310111630.743023-1-s-vadapalli@ti.com/
for patches 2/3 and 3/3.
Regards,
Siddharth.
---
Siddharth Vadapalli (3):
arm64: dts: ti: k3-j784s4-main: Add CPSW9G nodes
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 | 3 +
.../ti/k3-j784s4-evm-quad-port-eth-exp1.dtso | 142 ++++++++++++++++++
.../ti/k3-j784s4-evm-usxgmii-exp1-exp2.dtso | 72 +++++++++
arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi | 114 ++++++++++++++
4 files changed, 331 insertions(+)
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
--
2.25.1
^ permalink raw reply [flat|nested] 4+ messages in thread
* [RFC PATCH 1/3] arm64: dts: ti: k3-j784s4-main: Add CPSW9G nodes
2023-04-25 13:32 [RFC PATCH 0/3] Add CPSW9G DT support for J784S4 Siddharth Vadapalli
@ 2023-04-25 13:32 ` Siddharth Vadapalli
2023-04-25 13:32 ` [RFC PATCH 2/3] arm64: dts: ti: k3-j784s4: Add overlay to enable QSGMII mode with CPSW9G Siddharth Vadapalli
2023-04-25 13:32 ` [RFC PATCH 3/3] arm64: dts: ti: k3-j784s4: Add overlay for dual port USXGMII mode Siddharth Vadapalli
2 siblings, 0 replies; 4+ messages in thread
From: Siddharth Vadapalli @ 2023-04-25 13:32 UTC (permalink / raw)
To: nm, vigneshr, kristo, robh+dt, krzysztof.kozlowski,
krzysztof.kozlowski+dt, afd
Cc: devicetree, linux-kernel, linux-arm-kernel, srk, s-vadapalli
J784S4 SoC has a 9 port Ethernet Switch instance with 8 external ports
and 1 host port, referred to as CPSW9G.
Add device-tree nodes for CPSW9G and disable it by default. Device-tree
overlays will be used to enable it.
Signed-off-by: Siddharth Vadapalli <s-vadapalli@ti.com>
---
arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi | 114 +++++++++++++++++++++
1 file changed, 114 insertions(+)
diff --git a/arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi b/arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi
index 7111fe3640d3..cc145840d0c3 100644
--- a/arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi
@@ -51,6 +51,13 @@ cpsw1_phy_gmii_sel: phy@4034 {
#phy-cells = <1>;
};
+ cpsw0_phy_gmii_sel: phy@4044 {
+ compatible = "ti,j784s4-cpsw9g-phy-gmii-sel";
+ ti,qsgmii-main-ports = <7>, <7>;
+ reg = <0x4044 0x20>;
+ #phy-cells = <1>;
+ };
+
serdes_ln_ctrl: mux-controller@4080 {
compatible = "mmio-mux";
reg = <0x00004080 0x30>;
@@ -955,6 +962,113 @@ cpts@310d0000 {
};
};
+ main_cpsw0: ethernet@c000000 {
+ compatible = "ti,j784s4-cpswxg-nuss";
+ reg = <0x00 0xc000000 0x00 0x200000>;
+ reg-names = "cpsw_nuss";
+ #address-cells = <2>;
+ #size-cells = <2>;
+ ranges = <0x00 0x00 0x00 0xc000000 0x00 0x200000>;
+ 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";
+ status = "disabled";
+ };
+
+ main_cpsw0_port6: port@6 {
+ reg = <6>;
+ label = "port6";
+ status = "disabled";
+ };
+
+ main_cpsw0_port7: port@7 {
+ reg = <7>;
+ label = "port7";
+ status = "disabled";
+ };
+
+ main_cpsw0_port8: port@8 {
+ reg = <8>;
+ label = "port8";
+ 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>;
--
2.25.1
^ permalink raw reply related [flat|nested] 4+ messages in thread
* [RFC PATCH 2/3] arm64: dts: ti: k3-j784s4: Add overlay to enable QSGMII mode with CPSW9G
2023-04-25 13:32 [RFC PATCH 0/3] Add CPSW9G DT support for J784S4 Siddharth Vadapalli
2023-04-25 13:32 ` [RFC PATCH 1/3] arm64: dts: ti: k3-j784s4-main: Add CPSW9G nodes Siddharth Vadapalli
@ 2023-04-25 13:32 ` Siddharth Vadapalli
2023-04-25 13:32 ` [RFC PATCH 3/3] arm64: dts: ti: k3-j784s4: Add overlay for dual port USXGMII mode Siddharth Vadapalli
2 siblings, 0 replies; 4+ messages in thread
From: Siddharth Vadapalli @ 2023-04-25 13:32 UTC (permalink / raw)
To: nm, vigneshr, kristo, robh+dt, krzysztof.kozlowski,
krzysztof.kozlowski+dt, afd
Cc: devicetree, linux-kernel, linux-arm-kernel, srk, s-vadapalli
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>
---
arch/arm64/boot/dts/ti/Makefile | 2 +
.../ti/k3-j784s4-evm-quad-port-eth-exp1.dtso | 142 ++++++++++++++++++
2 files changed, 144 insertions(+)
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 c83c9d772b81..88c43f1f211b 100644
--- a/arch/arm64/boot/dts/ti/Makefile
+++ b/arch/arm64/boot/dts/ti/Makefile
@@ -46,6 +46,8 @@ dtb-$(CONFIG_ARCH_K3) += k3-j721s2-common-proc-board.dtb
# Boards with J784s4 SoC
dtb-$(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
# Enable support for device-tree overlays
DTC_FLAGS_k3-am6548-iot2050-advanced-m2 += -@
+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..3c1e1b1d495c
--- /dev/null
+++ b/arch/arm64/boot/dts/ti/k3-j784s4-evm-quad-port-eth-exp1.dtso
@@ -0,0 +1,142 @@
+// SPDX-License-Identifier: GPL-2.0
+/**
+ * DT Overlay for CPSW9G in QSGMII mode using J7 Quad Port ETH EXP Add-On Ethernet Card with
+ * J7AHP board. The Add-On Ethernet Card has to be connected to ENET Expansion 1 slot on the
+ * board.
+ *
+ * Copyright (C) 2023 Texas Instruments Incorporated - https://www.ti.com/
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/mux/ti-serdes.h>
+#include <dt-bindings/phy/phy-cadence.h>
+#include <dt-bindings/phy/phy.h>
+
+#include "k3-pinctrl.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";
+ };
+};
+
+&main_cpsw0 {
+ status = "okay";
+};
+
+&main_cpsw0_port5 {
+ status = "okay";
+ 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";
+};
+
+&main_cpsw0_port6 {
+ status = "okay";
+ 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";
+};
+
+&main_cpsw0_port7 {
+ status = "okay";
+ 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";
+};
+
+&main_cpsw0_port8 {
+ status = "okay";
+ 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";
+};
+
+&main_cpsw0_mdio {
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <&mdio0_pins_default>;
+ bus_freq = <1000000>;
+ reset-gpios = <&exp2 17 GPIO_ACTIVE_LOW>;
+ reset-post-delay-us = <120000>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ 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_pins_default: mdio0-pins-default {
+ 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 {
+ status = "okay";
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ serdes2_qsgmii_link: phy@0 {
+ reg = <2>;
+ cdns,num-lanes = <1>;
+ #phy-cells = <0>;
+ cdns,phy-type = <PHY_TYPE_QSGMII>;
+ resets = <&serdes_wiz2 3>;
+ };
+};
--
2.25.1
^ permalink raw reply related [flat|nested] 4+ messages in thread
* [RFC PATCH 3/3] arm64: dts: ti: k3-j784s4: Add overlay for dual port USXGMII mode
2023-04-25 13:32 [RFC PATCH 0/3] Add CPSW9G DT support for J784S4 Siddharth Vadapalli
2023-04-25 13:32 ` [RFC PATCH 1/3] arm64: dts: ti: k3-j784s4-main: Add CPSW9G nodes Siddharth Vadapalli
2023-04-25 13:32 ` [RFC PATCH 2/3] arm64: dts: ti: k3-j784s4: Add overlay to enable QSGMII mode with CPSW9G Siddharth Vadapalli
@ 2023-04-25 13:32 ` Siddharth Vadapalli
2 siblings, 0 replies; 4+ messages in thread
From: Siddharth Vadapalli @ 2023-04-25 13:32 UTC (permalink / raw)
To: nm, vigneshr, kristo, robh+dt, krzysztof.kozlowski,
krzysztof.kozlowski+dt, afd
Cc: devicetree, linux-kernel, linux-arm-kernel, srk, s-vadapalli
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>
---
arch/arm64/boot/dts/ti/Makefile | 1 +
.../ti/k3-j784s4-evm-usxgmii-exp1-exp2.dtso | 72 +++++++++++++++++++
2 files changed, 73 insertions(+)
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 88c43f1f211b..8ac7507f60ba 100644
--- a/arch/arm64/boot/dts/ti/Makefile
+++ b/arch/arm64/boot/dts/ti/Makefile
@@ -47,6 +47,7 @@ dtb-$(CONFIG_ARCH_K3) += k3-j721s2-common-proc-board.dtb
dtb-$(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
# Enable support for device-tree overlays
DTC_FLAGS_k3-am6548-iot2050-advanced-m2 += -@
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..90f045a6a9ad
--- /dev/null
+++ b/arch/arm64/boot/dts/ti/k3-j784s4-evm-usxgmii-exp1-exp2.dtso
@@ -0,0 +1,72 @@
+// SPDX-License-Identifier: GPL-2.0
+/**
+ * DT Overlay for CPSW9G in dual port fixed-link USXGMII mode using ENET-1
+ * and ENET-2 Expansion slots of J784S4 EVM.
+ *
+ * Copyright (C) 2023 Texas Instruments Incorporated - https://www.ti.com/
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/mux/ti-serdes.h>
+#include <dt-bindings/phy/phy-cadence.h>
+#include <dt-bindings/phy/phy.h>
+
+&main_cpsw0 {
+ status = "okay";
+ pinctrl-names = "default";
+};
+
+&main_cpsw0_port1 {
+ status = "okay";
+ phy-mode = "usxgmii";
+ mac-address = [00 00 00 00 00 00];
+ phys = <&cpsw0_phy_gmii_sel 1>, <&serdes2_usxgmii_link>;
+ phy-names = "mac", "serdes";
+ fixed-link {
+ speed = <5000>;
+ full-duplex;
+ };
+};
+
+&main_cpsw0_port2 {
+ status = "okay";
+ phy-mode = "usxgmii";
+ mac-address = [00 00 00 00 00 00];
+ phys = <&cpsw0_phy_gmii_sel 2>, <&serdes2_usxgmii_link>;
+ phy-names = "mac", "serdes";
+ fixed-link {
+ speed = <5000>;
+ full-duplex;
+ };
+};
+
+&serdes_wiz2 {
+ status = "okay";
+ assigned-clock-parents = <&k3_clks 406 9>;
+};
+
+&serdes2 {
+ status = "okay";
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ 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>;
+};
--
2.25.1
^ permalink raw reply related [flat|nested] 4+ messages in thread
end of thread, other threads:[~2023-04-25 13:33 UTC | newest]
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2023-04-25 13:32 [RFC PATCH 0/3] Add CPSW9G DT support for J784S4 Siddharth Vadapalli
2023-04-25 13:32 ` [RFC PATCH 1/3] arm64: dts: ti: k3-j784s4-main: Add CPSW9G nodes Siddharth Vadapalli
2023-04-25 13:32 ` [RFC PATCH 2/3] arm64: dts: ti: k3-j784s4: Add overlay to enable QSGMII mode with CPSW9G Siddharth Vadapalli
2023-04-25 13:32 ` [RFC PATCH 3/3] arm64: dts: ti: k3-j784s4: Add overlay for dual port USXGMII mode Siddharth Vadapalli
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