HummingBoard-T features two M.2 connectors labeled "M1" and "M2". The single SerDes lane of the SoC can be routed to either M1 pci-e signals, or M2 usb-3 signals by a gpio-controlled mux. Add overlays for each configuration. Signed-off-by: Josua Mayer <josua@xxxxxxxxxxxxx> --- arch/arm64/boot/dts/ti/Makefile | 6 +++ .../boot/dts/ti/k3-am642-hummingboard-t-pcie.dtso | 45 ++++++++++++++++++++++ .../boot/dts/ti/k3-am642-hummingboard-t-usb3.dtso | 44 +++++++++++++++++++++ 3 files changed, 95 insertions(+) diff --git a/arch/arm64/boot/dts/ti/Makefile b/arch/arm64/boot/dts/ti/Makefile index 041c3b71155e..ace72b4b85b0 100644 --- a/arch/arm64/boot/dts/ti/Makefile +++ b/arch/arm64/boot/dts/ti/Makefile @@ -31,8 +31,14 @@ dtb-$(CONFIG_ARCH_K3) += k3-am62a7-sk.dtb dtb-$(CONFIG_ARCH_K3) += k3-am62p5-sk.dtb # Boards with AM64x SoC +k3-am642-hummingboard-t-pcie-dtbs := \ + k3-am642-hummingboard-t.dtb k3-am642-hummingboard-t-pcie.dtbo +k3-am642-hummingboard-t-usb3-dtbs := \ + k3-am642-hummingboard-t.dtb k3-am642-hummingboard-t-usb3.dtbo dtb-$(CONFIG_ARCH_K3) += k3-am642-evm.dtb dtb-$(CONFIG_ARCH_K3) += k3-am642-hummingboard-t.dtb +dtb-$(CONFIG_ARCH_K3) += k3-am642-hummingboard-t-pcie.dtb +dtb-$(CONFIG_ARCH_K3) += k3-am642-hummingboard-t-usb3.dtb dtb-$(CONFIG_ARCH_K3) += k3-am642-phyboard-electra-rdk.dtb dtb-$(CONFIG_ARCH_K3) += k3-am642-sk.dtb dtb-$(CONFIG_ARCH_K3) += k3-am642-tqma64xxl-mbax4xxl.dtb diff --git a/arch/arm64/boot/dts/ti/k3-am642-hummingboard-t-pcie.dtso b/arch/arm64/boot/dts/ti/k3-am642-hummingboard-t-pcie.dtso new file mode 100644 index 000000000000..fd3f8d00c56a --- /dev/null +++ b/arch/arm64/boot/dts/ti/k3-am642-hummingboard-t-pcie.dtso @@ -0,0 +1,45 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2023 Josua Mayer <josua@xxxxxxxxxxxxx> + * + * Overlay for SolidRun AM642 HummingBoard-T to enable PCI-E. + */ + +/dts-v1/; +/plugin/; + +#include <dt-bindings/gpio/gpio.h> +#include <dt-bindings/phy/phy.h> + +#include "k3-serdes.h" + +&pcie0_rc { + pinctrl-names = "default"; + pinctrl-0 = <&pcie0_pins_default>; + reset-gpios = <&main_gpio1 15 GPIO_ACTIVE_HIGH>; + phys = <&serdes0_link>; + phy-names = "pcie-phy"; + num-lanes = <1>; + status = "okay"; +}; + +&serdes0 { + #address-cells = <1>; + #size-cells = <0>; + + serdes0_link: phy@0 { + reg = <0>; + cdns,num-lanes = <1>; + cdns,phy-type = <PHY_TYPE_PCIE>; + #phy-cells = <0>; + resets = <&serdes_wiz0 1>; + }; +}; + +&serdes_ln_ctrl { + idle-states = <AM64_SERDES0_LANE0_PCIE0>; +}; + +&serdes_mux { + idle-state = <1>; +}; diff --git a/arch/arm64/boot/dts/ti/k3-am642-hummingboard-t-usb3.dtso b/arch/arm64/boot/dts/ti/k3-am642-hummingboard-t-usb3.dtso new file mode 100644 index 000000000000..ffcc3bd3c7bc --- /dev/null +++ b/arch/arm64/boot/dts/ti/k3-am642-hummingboard-t-usb3.dtso @@ -0,0 +1,44 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2023 Josua Mayer <josua@xxxxxxxxxxxxx> + * + * Overlay for SolidRun AM642 HummingBoard-T to enable USB-3.1. + */ + +/dts-v1/; +/plugin/; + +#include <dt-bindings/phy/phy.h> + +#include "k3-serdes.h" + +&serdes0 { + #address-cells = <1>; + #size-cells = <0>; + + serdes0_link: phy@0 { + reg = <0>; + cdns,num-lanes = <1>; + cdns,phy-type = <PHY_TYPE_USB3>; + #phy-cells = <0>; + resets = <&serdes_wiz0 1>; + }; +}; + +&serdes_ln_ctrl { + idle-states = <AM64_SERDES0_LANE0_USB>; +}; + +&serdes_mux { + idle-state = <0>; +}; + +&usbss0 { + /delete-property/ ti,usb2-only; +}; + +&usb0 { + maximum-speed = "super-speed"; + phys = <&serdes0_link>; + phy-names = "cdns3,usb3-phy"; +}; -- 2.35.3