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Message-ID: <20240502091002.3659435-6-c-vankar@ti.com>
Date: Thu, 2 May 2024 14:40:02 +0530
From: Chintan Vankar <c-vankar@...com>
To: Conor Dooley <conor+dt@...nel.org>,
Krzysztof Kozlowski
<krzk+dt@...nel.org>,
Rob Herring <robh@...nel.org>, Tero Kristo
<kristo@...nel.org>,
Vignesh Raghavendra <vigneshr@...com>, Nishanth Menon
<nm@...com>,
<s-vadapalli@...com>, <danishanwar@...com>, <r-gunasekaran@...com>,
<srk@...com>
CC: <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
<linux-arm-kernel@...ts.infradead.org>,
Chintan Vankar <c-vankar@...com>
Subject: [PATCH v7 5/5] arm64: dts: ti: k3-j784s4: Add overlay for dual port USXGMII mode
From: Siddharth Vadapalli <s-vadapalli@...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@...com>
Signed-off-by: Chintan Vankar <c-vankar@...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@...000/ethernet@...0000/ethernet-ports/port@1";
+ ethernet2 = "/bus@...000/ethernet@...0000/ethernet-ports/port@2";
+ ethernet3 = "/bus@...000/ethernet@...0000/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
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