From: Roger Quadros <rogerq@xxxxxx> Enable both SERDES and PCIe DT nodes in order to get PCIe working on the SERDES PCIe x2 personality card. The daughter card also has a USB 2.0 dual-role port. As the base board already supports a 2.0 dual-role port, enable the port on the SERDES card to be a host only port. This will prevent user confusion as having 2 ports in device mode often leads to confusion as to which port is bound to the gadget function driver. The PCIe x2 card is provided with the AM65x IDK configuration [1] so apply the overlay to k3-am654-idk.dtb [1] https://www.ti.com/lit/ug/spruim6a/spruim6a.pdf Co-developed-by: Kishon Vijay Abraham I <kishon@xxxxxx> Signed-off-by: Kishon Vijay Abraham I <kishon@xxxxxx> Signed-off-by: Roger Quadros <rogerq@xxxxxx> --- Changelog: v2: - Drop PCIe endpoint settings as it no longer exists in base tree. v1: https://lore.kernel.org/all/20240126114530.40913-3-rogerq@xxxxxxxxxx/ --- arch/arm64/boot/dts/ti/Makefile | 3 +- arch/arm64/boot/dts/ti/k3-am654-pcie-usb2.dtso | 59 ++++++++++++++++++++++++++ 2 files changed, 61 insertions(+), 1 deletion(-) diff --git a/arch/arm64/boot/dts/ti/Makefile b/arch/arm64/boot/dts/ti/Makefile index bfcc86ff8e24..f534c373c958 100644 --- a/arch/arm64/boot/dts/ti/Makefile +++ b/arch/arm64/boot/dts/ti/Makefile @@ -47,7 +47,7 @@ dtb-$(CONFIG_ARCH_K3) += k3-am64-tqma64xxl-mbax4xxl-wlan.dtbo # Boards with AM65x SoC k3-am654-gp-evm-dtbs := k3-am654-base-board.dtb k3-am654-base-board-rocktech-rk101-panel.dtbo k3-am654-evm-dtbs := k3-am654-base-board.dtb k3-am654-icssg2.dtbo -k3-am654-idk-dtbs := k3-am654-evm.dtb k3-am654-idk.dtbo +k3-am654-idk-dtbs := k3-am654-evm.dtb k3-am654-idk.dtbo k3-am654-pcie-usb2.dtbo dtb-$(CONFIG_ARCH_K3) += k3-am6528-iot2050-basic.dtb dtb-$(CONFIG_ARCH_K3) += k3-am6528-iot2050-basic-pg2.dtb dtb-$(CONFIG_ARCH_K3) += k3-am6548-iot2050-advanced.dtb @@ -58,6 +58,7 @@ dtb-$(CONFIG_ARCH_K3) += k3-am654-gp-evm.dtb dtb-$(CONFIG_ARCH_K3) += k3-am654-evm.dtb dtb-$(CONFIG_ARCH_K3) += k3-am654-idk.dtb dtb-$(CONFIG_ARCH_K3) += k3-am654-base-board-rocktech-rk101-panel.dtbo +dtb-$(CONFIG_ARCH_K3) += k3-am654-pcie-usb2.dtbo # Boards with J7200 SoC k3-j7200-evm-dtbs := k3-j7200-common-proc-board.dtb k3-j7200-evm-quad-port-eth-exp.dtbo diff --git a/arch/arm64/boot/dts/ti/k3-am654-pcie-usb2.dtso b/arch/arm64/boot/dts/ti/k3-am654-pcie-usb2.dtso new file mode 100644 index 000000000000..dd701e0c1750 --- /dev/null +++ b/arch/arm64/boot/dts/ti/k3-am654-pcie-usb2.dtso @@ -0,0 +1,59 @@ +// SPDX-License-Identifier: GPL-2.0-only OR MIT +/** + * DT overlay for SERDES personality card: 2lane PCIe + USB2.0 Host on AM654 EVM + * + * Copyright (C) 2018-2024 Texas Instruments Incorporated - https://www.ti.com/ + */ + +/dts-v1/; +/plugin/; +#include <dt-bindings/gpio/gpio.h> +#include <dt-bindings/phy/phy.h> +#include <dt-bindings/phy/phy-am654-serdes.h> +#include "k3-pinctrl.h" + +&serdes0 { + assigned-clocks = <&k3_clks 153 4>, + <&serdes0 AM654_SERDES_CMU_REFCLK>, + <&serdes0 AM654_SERDES_RO_REFCLK>; + assigned-clock-parents = <&k3_clks 153 8>, + <&k3_clks 153 4>, + <&k3_clks 153 4>; + status = "okay"; +}; + +&serdes1 { + assigned-clocks = <&serdes1 AM654_SERDES_CMU_REFCLK>; + assigned-clock-parents = <&serdes0 AM654_SERDES_RO_REFCLK>; + status = "okay"; +}; + +&pcie0_rc { + num-lanes = <2>; + phys = <&serdes0 PHY_TYPE_PCIE 1>, <&serdes1 PHY_TYPE_PCIE 1>; + phy-names = "pcie-phy0", "pcie-phy1"; + reset-gpios = <&pca9555 5 GPIO_ACTIVE_HIGH>; + status = "okay"; +}; + +&main_pmx0 { + usb0_pins_default: usb0-pins-default { + pinctrl-single,pins = < + AM65X_IOPAD(0x02bc, PIN_OUTPUT, 0) /* (AD9) USB0_DRVVBUS */ + >; + }; +}; + +&dwc3_0 { + status = "okay"; +}; + +&usb0_phy { + status = "okay"; +}; + +&usb0 { + pinctrl-names = "default"; + pinctrl-0 = <&usb0_pins_default>; + dr_mode = "host"; +}; -- 2.34.1
