Add overlay to enable the PCIe0 instance of PCIe on AM642-EVM in Endpoint mode of operation. Signed-off-by: Siddharth Vadapalli <s-vadapalli@xxxxxx> --- Hello, This patch is based on linux-next tagged next-20240930. Logs validating the device-tree overlay with AM642-EVM as Endpoint and J784S4-EVM as Root Complex: https://gist.github.com/Siddharth-Vadapalli-at-TI/d3c071d0a34b7ef162e1413f1688cc9d Regards, Siddharth. arch/arm64/boot/dts/ti/Makefile | 4 ++ .../boot/dts/ti/k3-am642-evm-pcie0-ep.dtso | 51 +++++++++++++++++++ 2 files changed, 55 insertions(+) create mode 100644 arch/arm64/boot/dts/ti/k3-am642-evm-pcie0-ep.dtso diff --git a/arch/arm64/boot/dts/ti/Makefile b/arch/arm64/boot/dts/ti/Makefile index bcd392c3206e..c1417b38a4e6 100644 --- a/arch/arm64/boot/dts/ti/Makefile +++ b/arch/arm64/boot/dts/ti/Makefile @@ -48,6 +48,7 @@ k3-am642-hummingboard-t-usb3-dtbs := \ dtb-$(CONFIG_ARCH_K3) += k3-am642-evm.dtb dtb-$(CONFIG_ARCH_K3) += k3-am642-evm-icssg1-dualemac.dtbo dtb-$(CONFIG_ARCH_K3) += k3-am642-evm-icssg1-dualemac-mii.dtbo +dtb-$(CONFIG_ARCH_K3) += k3-am642-evm-pcie0-ep.dtbo 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 @@ -168,6 +169,8 @@ k3-am642-evm-icssg1-dualemac-dtbs := \ k3-am642-evm.dtb k3-am642-evm-icssg1-dualemac.dtbo k3-am642-evm-icssg1-dualemac-mii-dtbs := \ k3-am642-evm.dtb k3-am642-evm-icssg1-dualemac-mii.dtbo +k3-am642-evm-pcie0-ep-dtbs := \ + k3-am642-evm.dtb k3-am642-evm-pcie0-ep.dtbo k3-am642-phyboard-electra-disable-eth-phy-dtbs := \ k3-am642-phyboard-electra-rdk.dtb k3-am6xx-phycore-disable-eth-phy.dtbo k3-am642-phyboard-electra-disable-rtc-dtbs := \ @@ -217,6 +220,7 @@ dtb- += k3-am625-beagleplay-csi2-ov5640.dtb \ k3-am62p5-sk-csi2-tevi-ov5640.dtb \ k3-am642-evm-icssg1-dualemac.dtb \ k3-am642-evm-icssg1-dualemac-mii.dtb \ + k3-am642-evm-pcie0-ep.dtb \ k3-am642-tqma64xxl-mbax4xxl-sdcard.dtb \ k3-am642-tqma64xxl-mbax4xxl-wlan.dtb \ k3-am68-sk-base-board-csi2-dual-imx219.dtb \ diff --git a/arch/arm64/boot/dts/ti/k3-am642-evm-pcie0-ep.dtso b/arch/arm64/boot/dts/ti/k3-am642-evm-pcie0-ep.dtso new file mode 100644 index 000000000000..6b029539e0db --- /dev/null +++ b/arch/arm64/boot/dts/ti/k3-am642-evm-pcie0-ep.dtso @@ -0,0 +1,51 @@ +// SPDX-License-Identifier: GPL-2.0-only OR MIT +/** + * DT Overlay for enabling PCIE0 instance in Endpoint Configuration with the + * AM642 EVM. + * + * AM642 EVM Product Link: https://www.ti.com/tool/TMDS64EVM + * + * Copyright (C) 2024 Texas Instruments Incorporated - https://www.ti.com/ + */ + +/dts-v1/; +/plugin/; + +#include <dt-bindings/interrupt-controller/arm-gic.h> +#include <dt-bindings/soc/ti,sci_pm_domain.h> + +#include "k3-pinctrl.h" + +/* + * Since Root Complex and Endpoint modes are mutually exclusive + * disable Root Complex mode. + */ +&pcie0_rc { + status = "disabled"; +}; + +&cbass_main { + #address-cells = <2>; + #size-cells = <2>; + interrupt-parent = <&gic500>; + + pcie0_ep: pcie-ep@f102000 { + compatible = "ti,am64-pcie-ep", "ti,j721e-pcie-ep"; + reg = <0x00 0x0f102000 0x00 0x1000>, + <0x00 0x0f100000 0x00 0x400>, + <0x00 0x0d000000 0x00 0x00800000>, + <0x00 0x68000000 0x00 0x08000000>; + reg-names = "intd_cfg", "user_cfg", "reg", "mem"; + interrupt-names = "link_state"; + interrupts = <GIC_SPI 203 IRQ_TYPE_EDGE_RISING>; + max-link-speed = <2>; + num-lanes = <1>; + power-domains = <&k3_pds 114 TI_SCI_PD_EXCLUSIVE>; + clocks = <&k3_clks 114 0>; + clock-names = "fck"; + max-functions = /bits/ 8 <1>; + phys = <&serdes0_pcie_link>; + phy-names = "pcie-phy"; + ti,syscon-pcie-ctrl = <&main_conf 0x4070>; + }; +}; -- 2.40.1
