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Message-ID: <20230310092804.692303-3-s-vadapalli@ti.com>
Date: Fri, 10 Mar 2023 14:58:04 +0530
From: Siddharth Vadapalli <s-vadapalli@...com>
To: <nm@...com>, <vigneshr@...com>, <kristo@...nel.org>,
<robh+dt@...nel.org>, <krzysztof.kozlowski@...aro.org>,
<krzysztof.kozlowski+dt@...aro.org>
CC: <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
<linux-arm-kernel@...ts.infradead.org>, <srk@...com>,
<s-vadapalli@...com>
Subject: [PATCH 2/2] arm64: dts: ti: k3-j721e: Add overlay to enable CPSW9G ports in QSGMII mode
The J7 Quad Port Add-On Ethernet Card for J721E Common-Proc-Board supports
QSGMII mode. Use the overlay to configure CPSW9G ports in QSGMII mode.
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@...com>
---
arch/arm64/boot/dts/ti/Makefile | 4 +
.../dts/ti/k3-j721e-quad-port-eth-exp.dtso | 148 ++++++++++++++++++
2 files changed, 152 insertions(+)
create mode 100644 arch/arm64/boot/dts/ti/k3-j721e-quad-port-eth-exp.dtso
diff --git a/arch/arm64/boot/dts/ti/Makefile b/arch/arm64/boot/dts/ti/Makefile
index 6acd12409d59..167bcd9b09b7 100644
--- a/arch/arm64/boot/dts/ti/Makefile
+++ b/arch/arm64/boot/dts/ti/Makefile
@@ -45,3 +45,7 @@ dtb-$(CONFIG_ARCH_K3) += k3-j784s4-evm.dtb
# Enable support for device-tree overlays
DTC_FLAGS_k3-am6548-iot2050-advanced-m2 += -@
+DTC_FLAGS_k3-j721e-common-proc-board += -@
+
+# Device-tree overlays
+dtb-$(CONFIG_ARCH_K3) += k3-j721e-quad-port-eth-exp.dtbo
diff --git a/arch/arm64/boot/dts/ti/k3-j721e-quad-port-eth-exp.dtso b/arch/arm64/boot/dts/ti/k3-j721e-quad-port-eth-exp.dtso
new file mode 100644
index 000000000000..c63e1454614e
--- /dev/null
+++ b/arch/arm64/boot/dts/ti/k3-j721e-quad-port-eth-exp.dtso
@@ -0,0 +1,148 @@
+// SPDX-License-Identifier: GPL-2.0
+/**
+ * DT Overlay for CPSW9G in QSGMII mode using J7 Quad Port ETH EXP Add-On Ethernet Card with
+ * J721E 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/pinctrl/k3.h>
+#include <dt-bindings/phy/phy.h>
+#include <dt-bindings/phy/phy-cadence.h>
+
+/ {
+ fragment@102 {
+ target-path = "/";
+ __overlay__ {
+ 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@3";
+ ethernet4 = "/bus@...000/ethernet@...0000/ethernet-ports/port@4";
+ };
+ };
+ };
+};
+
+&cpsw0 {
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <&mdio_pins_default>;
+};
+
+&cpsw0_port1 {
+ phy-handle = <&cpsw9g_phy0>;
+ phy-mode = "qsgmii";
+ mac-address = [00 00 00 00 00 00];
+ phys = <&cpsw0_phy_gmii_sel 1>;
+};
+
+&cpsw0_port2 {
+ phy-handle = <&cpsw9g_phy1>;
+ phy-mode = "qsgmii";
+ mac-address = [00 00 00 00 00 00];
+ phys = <&cpsw0_phy_gmii_sel 2>;
+};
+
+&cpsw0_port3 {
+ phy-handle = <&cpsw9g_phy2>;
+ phy-mode = "qsgmii";
+ mac-address = [00 00 00 00 00 00];
+ phys = <&cpsw0_phy_gmii_sel 3>;
+};
+
+&cpsw0_port4 {
+ phy-handle = <&cpsw9g_phy3>;
+ phy-mode = "qsgmii";
+ mac-address = [00 00 00 00 00 00];
+ phys = <&cpsw0_phy_gmii_sel 4>;
+};
+
+&cpsw0_port5 {
+ status = "disabled";
+};
+
+&cpsw0_port6 {
+ status = "disabled";
+};
+
+&cpsw0_port7 {
+ status = "disabled";
+};
+
+&cpsw0_port8 {
+ status = "disabled";
+};
+
+&cpsw9g_mdio {
+ reset-gpios = <&exp2 17 GPIO_ACTIVE_LOW>;
+ reset-post-delay-us = <120000>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ cpsw9g_phy0: ethernet-phy@17 {
+ reg = <17>;
+ };
+ cpsw9g_phy1: ethernet-phy@16 {
+ reg = <16>;
+ };
+ cpsw9g_phy2: ethernet-phy@18 {
+ reg = <18>;
+ };
+ cpsw9g_phy3: ethernet-phy@19 {
+ reg = <19>;
+ };
+};
+
+&exp2 {
+ qsgmii-line-hog {
+ gpio-hog;
+ gpios = <16 GPIO_ACTIVE_HIGH>;
+ output-low;
+ line-name = "qsgmii-pwrdn-line";
+ };
+};
+
+&main_pmx0 {
+ mdio_pins_default: mdio_pins_default {
+ pinctrl-single,pins = <
+ J721E_IOPAD(0x1bc, PIN_OUTPUT, 0) /* (V24) MDIO0_MDC */
+ J721E_IOPAD(0x1b8, PIN_INPUT, 0) /* (V26) MDIO0_MDIO */
+ >;
+ };
+};
+
+&serdes_ln_ctrl {
+ idle-states = <J721E_SERDES0_LANE0_PCIE0_LANE0>, <J721E_SERDES0_LANE1_QSGMII_LANE2>,
+ <J721E_SERDES1_LANE0_PCIE1_LANE0>, <J721E_SERDES1_LANE1_PCIE1_LANE1>,
+ <J721E_SERDES2_LANE0_PCIE2_LANE0>, <J721E_SERDES2_LANE1_PCIE2_LANE1>,
+ <J721E_SERDES3_LANE0_USB3_0_SWAP>, <J721E_SERDES3_LANE1_USB3_0>,
+ <J721E_SERDES4_LANE0_EDP_LANE0>, <J721E_SERDES4_LANE1_EDP_LANE1>,
+ <J721E_SERDES4_LANE2_EDP_LANE2>, <J721E_SERDES4_LANE3_EDP_LANE3>;
+};
+
+&serdes_wiz0 {
+ status = "okay";
+};
+
+&serdes0 {
+ status = "okay";
+
+ assigned-clocks = <&serdes0 CDNS_SIERRA_PLL_CMNLC>, <&serdes0 CDNS_SIERRA_PLL_CMNLC1>;
+ assigned-clock-parents = <&wiz0_pll1_refclk>, <&wiz0_pll1_refclk>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ serdes0_qsgmii_link: phy@1 {
+ reg = <1>;
+ cdns,num-lanes = <1>;
+ #phy-cells = <0>;
+ cdns,phy-type = <PHY_TYPE_QSGMII>;
+ resets = <&serdes_wiz0 2>;
+ };
+};
--
2.25.1
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