Tegra234 has a total of 11 PCIe controllers based on Synopsys DesignWare core. There are three Universal PHY (UPHY) blocks (viz. HSIO, NVHS and GBE) with each block supporting 8 lanes respectively. Controllers:0~4 use UPHY lanes from HSIO block, Controllers:5,6 use UPHY lanes from NVHS block and Controllers:7~10 use UPHY lanes from GBE block. Lane mapping in each block is controlled in XBAR module by BPMP-FW. Since PCIe core has PIPE interface, a glue module called PIPE-to-UPHY (P2U) is used to connect each UPHY lane (applicable to all three UPHY bricks i.e. HSIO/NVHS/GBE) to PCIe controller. This patch series - Adds support for Tegra234 in the existing P2U PHY driver - Adds support for Tegra234 in the existing PCIe platform controller driver - Adds device tree nodes each PCIe controllers - Enables nodes applicable to P3737-0000 platform Testing done on P3737-0000 platform - PCIe link is up with on-board Broadcom WiFi controller - PCIe link is up with NVMe drive connected to M.2 Key-M slot and its functionality is verified - PCIe link is up with a variety of cards (NICs and USB3.0 add-on cards) and their functionality is verified Vidya Sagar (10): dt-bindings: Add Tegra234 PCIe clocks and resets dt-bindings: power: Add Tegra234 PCIe power domains dt-bindings: memory: Add Tegra234 PCIe memory dt-bindings: PHY: P2U: Add support for Tegra234 P2U block dt-bindings: PCI: tegra: Add device tree support for Tegra234 arm64: tegra: Add P2U and PCIe controller nodes to Tegra234 DT arm64: tegra: Enable PCIe slots in P3737-0000 board phy: tegra: Add PCIe PIPE2UPHY support for Tegra234 PCI: Disable MSI for Tegra234 root ports PCI: tegra: Add Tegra234 PCIe support .../bindings/pci/nvidia,tegra194-pcie.txt | 106 ++- .../bindings/phy/phy-tegra194-p2u.yaml | 17 +- .../nvidia/tegra234-p3737-0000+p3701-0000.dts | 26 + arch/arm64/boot/dts/nvidia/tegra234.dtsi | 743 ++++++++++++++++++ drivers/pci/controller/dwc/pcie-tegra194.c | 409 +++++++--- drivers/pci/quirks.c | 9 + drivers/phy/tegra/phy-tegra194-p2u.c | 48 +- include/dt-bindings/clock/tegra234-clock.h | 25 +- include/dt-bindings/memory/tegra234-mc.h | 64 ++ .../dt-bindings/power/tegra234-powergate.h | 20 + include/dt-bindings/reset/tegra234-reset.h | 27 +- 11 files changed, 1390 insertions(+), 104 deletions(-) create mode 100644 include/dt-bindings/power/tegra234-powergate.h -- 2.17.1
