Add overlay to enable the PCIE1 instance of PCIe on J721E-EVM in Endpoint mode of operation. Additionally, in order to support both PCIE0 and PCIE1 in Endpoint Mode of operation, enable applying device-tree overlays on "k3-j721e-evm-pcie0-ep.dtb", thereby allowing the overlay for PCIE1 in Endpoint mode to be applied on the aforementioned DTB. Signed-off-by: Siddharth Vadapalli <s-vadapalli@xxxxxx> --- Hello, This patch is based on linux-next tagged next-20240221. The v1 of this patch is at: https://lore.kernel.org/r/20240220105006.1056824-1-s-vadapalli@xxxxxx/ Changes since v1: - Created a new overlay for PCIE1 based on Andrew's suggestion at: https://lore.kernel.org/r/415ee6d4-fe26-4582-80f3-9b503d308fdf@xxxxxx/ - Updated Makefile to allow applying overlay on "k3-j721e-evm-pcie0-ep.dtb" Regards, Siddharth. arch/arm64/boot/dts/ti/Makefile | 5 ++ .../boot/dts/ti/k3-j721e-evm-pcie1-ep.dtso | 53 +++++++++++++++++++ 2 files changed, 58 insertions(+) create mode 100644 arch/arm64/boot/dts/ti/k3-j721e-evm-pcie1-ep.dtso diff --git a/arch/arm64/boot/dts/ti/Makefile b/arch/arm64/boot/dts/ti/Makefile index d601c52ab181..d8a5db6db490 100644 --- a/arch/arm64/boot/dts/ti/Makefile +++ b/arch/arm64/boot/dts/ti/Makefile @@ -76,6 +76,7 @@ dtb-$(CONFIG_ARCH_K3) += k3-j721e-beagleboneai64.dtb dtb-$(CONFIG_ARCH_K3) += k3-j721e-evm.dtb dtb-$(CONFIG_ARCH_K3) += k3-j721e-evm-gesi-exp-board.dtbo dtb-$(CONFIG_ARCH_K3) += k3-j721e-evm-pcie0-ep.dtbo +dtb-$(CONFIG_ARCH_K3) += k3-j721e-evm-pcie1-ep.dtbo dtb-$(CONFIG_ARCH_K3) += k3-j721e-sk.dtb dtb-$(CONFIG_ARCH_K3) += k3-j721e-sk-csi2-dual-imx219.dtbo @@ -128,6 +129,8 @@ k3-am69-sk-csi2-dual-imx219-dtbs := k3-am69-sk.dtb \ k3-j721e-sk-csi2-dual-imx219.dtbo k3-j721e-evm-pcie0-ep-dtbs := k3-j721e-common-proc-board.dtb \ k3-j721e-evm-pcie0-ep.dtbo +k3-j721e-evm-pcie1-ep-dtbs := k3-j721e-common-proc-board.dtb \ + k3-j721e-evm-pcie1-ep.dtbo k3-j721e-sk-csi2-dual-imx219-dtbs := k3-j721e-sk.dtb \ k3-j721e-sk-csi2-dual-imx219.dtbo k3-j721s2-evm-pcie1-ep-dtbs := k3-j721s2-common-proc-board.dtb \ @@ -148,6 +151,7 @@ dtb- += k3-am625-beagleplay-csi2-ov5640.dtb \ k3-am68-sk-base-board-csi2-dual-imx219-dtbs \ k3-am69-sk-csi2-dual-imx219-dtbs \ k3-j721e-evm-pcie0-ep.dtb \ + k3-j721e-evm-pcie1-ep.dtb \ k3-j721e-sk-csi2-dual-imx219-dtbs \ k3-j721s2-evm-pcie1-ep.dtb @@ -162,5 +166,6 @@ DTC_FLAGS_k3-am6548-iot2050-advanced-m2 += -@ DTC_FLAGS_k3-am68-sk-base-board += -@ DTC_FLAGS_k3-am69-sk += -@ DTC_FLAGS_k3-j721e-common-proc-board += -@ +DTC_FLAGS_k3-j721e-evm-pcie0-ep += -@ DTC_FLAGS_k3-j721e-sk += -@ DTC_FLAGS_k3-j721s2-common-proc-board += -@ diff --git a/arch/arm64/boot/dts/ti/k3-j721e-evm-pcie1-ep.dtso b/arch/arm64/boot/dts/ti/k3-j721e-evm-pcie1-ep.dtso new file mode 100644 index 000000000000..b1d579e577ab --- /dev/null +++ b/arch/arm64/boot/dts/ti/k3-j721e-evm-pcie1-ep.dtso @@ -0,0 +1,53 @@ +// SPDX-License-Identifier: GPL-2.0-only OR MIT +/** + * DT Overlay for enabling PCIE1 instance in Endpoint Configuration with the + * J7 common processor board. + * + * J7 Common Processor Board Product Link: https://www.ti.com/tool/J721EXCPXEVM + * + * 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. + */ +&pcie1_rc { + status = "disabled"; +}; + +&cbass_main { + #address-cells = <2>; + #size-cells = <2>; + interrupt-parent = <&gic500>; + + pcie1_ep: pcie-ep@2910000 { + compatible = "ti,j721e-pcie-ep"; + reg = <0x00 0x02910000 0x00 0x1000>, + <0x00 0x02917000 0x00 0x400>, + <0x00 0x0d800000 0x00 0x00800000>, + <0x00 0x18000000 0x00 0x08000000>; + reg-names = "intd_cfg", "user_cfg", "reg", "mem"; + interrupt-names = "link_state"; + interrupts = <GIC_SPI 330 IRQ_TYPE_EDGE_RISING>; + ti,syscon-pcie-ctrl = <&scm_conf 0x4074>; + max-link-speed = <3>; + num-lanes = <2>; + power-domains = <&k3_pds 240 TI_SCI_PD_EXCLUSIVE>; + clocks = <&k3_clks 240 1>; + clock-names = "fck"; + max-functions = /bits/ 8 <6>; + max-virtual-functions = /bits/ 8 <4 4 4 4 0 0>; + dma-coherent; + phys = <&serdes1_pcie_link>; + phy-names = "pcie-phy"; + }; +}; -- 2.34.1
