Hello, TI's J784S4 SoC has two Gen3 x4 Lane PCIe Controllers. This series adds the necessary device-tree support to enable both PCIe instances in Root Complex mode of operation by default. The device-tree overlay to enable both instances in Endpoint mode of operation is also present in this series. v1: https://lore.kernel.org/r/20240129114749.1197579-1-s-vadapalli@xxxxxx Changes since v1: - Rebased series on linux-next tagged next-2024020. - All dependencies mentioned in v1 series have been met. This series has no further dependencies for functionality. - Added "pcie0_ctrl" and "pcie1_ctrl" nodes within the System Controller node (scm_conf). This enables reusing the existing "ti,syscon-pcie-ctrl" property without having to map the entire System Controller region for configuring the PCIe specific registers within "scm_conf". This change is also done in the "overlay" file in patch 3/3 w.r.t. providing the phandle to the pcie0_ctrl and pcie1_ctrl nodes to the "ti,syscon-pcie-ctrl" property in the overlay. Test Logs: 1. PCIe0 and PCIe1 in Root Complex Modes of operation with an NVMe SSD connected to the PCIe0 instance and the Read Performance measured with hdparm command: https://gist.github.com/Siddharth-Vadapalli-at-TI/96c4ca37dd855120516ccdc298548dc6 2. PCIe0 Endpoint Mode functionality verified with the overlay. Logs of the RC enumerating PCIe0 as an Endpoint: https://gist.github.com/Siddharth-Vadapalli-at-TI/01b6fb0c9494ab76607b574a728b84da 3. PCIe1 Endpoint Mode functionality verified with the overlay. Logs of the RC enumerating PCIe1 as an Endpoint: https://gist.github.com/Siddharth-Vadapalli-at-TI/e844ac92d56131cbb2c134fab621b1e6 Regards, Siddharth. Siddharth Vadapalli (3): arm64: dts: ti: k3-j784s4-main: Add PCIe nodes arm64: dts: ti: k3-j784s4-evm: Enable PCIe0 and PCIe1 in RC Mode arm64: dts: ti: k3-j784s4-evm: Add overlay for PCIe0 and PCIe1 EP Mode arch/arm64/boot/dts/ti/Makefile | 7 +- .../dts/ti/k3-j784s4-evm-pcie0-pcie1-ep.dtso | 79 ++++++++++++++++ arch/arm64/boot/dts/ti/k3-j784s4-evm.dts | 46 +++++++++ arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi | 94 +++++++++++++++++++ 4 files changed, 225 insertions(+), 1 deletion(-) create mode 100644 arch/arm64/boot/dts/ti/k3-j784s4-evm-pcie0-pcie1-ep.dtso -- 2.40.1
