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@xxxxxx> --- 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
