From: Thierry Reding treding@nvidia.com
This series adds PCIe support for Tegra20, Tegra30 and Tegra124. The size is mostly due to the large number of infrastructure that's added (libfdt, Tegra specific drivers required by the PCIe driver).
Patches 1-5 add various FDT helpers to make it easier to parse complex device trees.
Patch 6 is a minor cleanup to the PCI command that prevents a spew of error messages if a bus does not exist. Patch 7 modifies the PCI enumeration code to honor theh restrictions encoded within a host controller driver's pci_ski_dev() implementation. This is required to prevent exceptions from the NVIDIA Tegra PCIe controller.
Patch 8 imports the pr_fmt() macro used within the Linux kernel to reduce the number of characters consumed by literal strings by allowing a source file to specify a prefix or suffix that should be applied to all format strings in the file. It is currently used by the debug() and error() macros.
Patches 9-14 are preparatory work for the Tegra PCIe controller. They add missing clock driver functionality as well as drivers for the Tegra powergate and XUSB pad controller blocks.
Patch 15 adds the PCIe controller driver for Tegra20, Tegra30 and Tegra124.
Finally, patches 16-23 add the various device tree nodes and configuration options to enable PCIe on the TrimSlice (Tegra20), Beaver, Cardhu (Tegra30) and Jetson TK1 (Tegra124) boards.
The above boards all have an ethernet NIC connected to PCIe, which is what I tested with. There are some cache maintenance issues related to that, but a separate series will shortly be sent out to address those.
Thierry
Thierry Reding (23): fdt: Add functions to query a node's #address- and #size-cells fdt: Add a function to get the index of a string fdt: Add resource parsing functions fdt: Add a function to return PCI BDF triplet fdt: Add a subnodes iterator macro pci: Abort early if bus does not exist pci: Honour pci_skip_dev() Add pr_fmt() macro ARM: tegra: Implement tegra_plle_enable() ARM: tegra: Provide PCIEXCLK reset ID ARM: tegra: Implement powergate support ARM: tegra: Implement XUSB pad controller ARM: tegra: Add XUSB pad controller on Tegra124 ARM: tegra: Enable XUSB pad controller on Jetson TK1 pci: tegra: Add Tegra PCIe driver ARM: tegra: Add Tegra20 PCIe device tree node ARM: tegra: Enable PCIe on TrimSlice ARM: tegra: Add Tegra30 PCIe device tree node ARM: tegra: Enable PCIe on Beaver ARM: tegra: Enable PCIe on Cardhu ARM: tegra: Add GIC for Tegra124 ARM: tegra: Add Tegra124 PCIe device tree node ARM: tegra: Enable PCIe on Jetson TK1
arch/arm/cpu/tegra-common/Makefile | 2 + arch/arm/cpu/tegra-common/powergate.c | 80 ++ arch/arm/cpu/tegra-common/xusb-padctl.c | 39 + arch/arm/cpu/tegra124-common/Makefile | 1 + arch/arm/cpu/tegra124-common/clock.c | 109 +++ arch/arm/cpu/tegra124-common/xusb-padctl.c | 766 +++++++++++++++ arch/arm/cpu/tegra20-common/clock.c | 141 ++- arch/arm/cpu/tegra30-common/clock.c | 155 +++ arch/arm/dts/tegra124-jetson-tk1.dts | 373 +++++++ arch/arm/dts/tegra124.dtsi | 90 ++ arch/arm/dts/tegra20-trimslice.dts | 35 + arch/arm/dts/tegra20.dtsi | 56 ++ arch/arm/dts/tegra30-beaver.dts | 166 ++++ arch/arm/dts/tegra30-cardhu.dts | 357 +++++++ arch/arm/dts/tegra30.dtsi | 71 ++ arch/arm/include/asm/arch-tegra/powergate.h | 27 + arch/arm/include/asm/arch-tegra/xusb-padctl.h | 14 + arch/arm/include/asm/arch-tegra114/powergate.h | 6 + arch/arm/include/asm/arch-tegra114/xusb-padctl.h | 6 + arch/arm/include/asm/arch-tegra124/clock.h | 2 + arch/arm/include/asm/arch-tegra124/powergate.h | 6 + arch/arm/include/asm/arch-tegra124/xusb-padctl.h | 6 + arch/arm/include/asm/arch-tegra20/clock-tables.h | 2 +- arch/arm/include/asm/arch-tegra20/clock.h | 2 + arch/arm/include/asm/arch-tegra20/powergate.h | 6 + arch/arm/include/asm/arch-tegra20/xusb-padctl.h | 6 + arch/arm/include/asm/arch-tegra30/clock.h | 2 + arch/arm/include/asm/arch-tegra30/powergate.h | 6 + arch/arm/include/asm/arch-tegra30/xusb-padctl.h | 6 + board/compulab/trimslice/trimslice.c | 8 + board/nvidia/cardhu/cardhu.c | 56 ++ board/nvidia/common/board.c | 3 + board/nvidia/jetson-tk1/jetson-tk1.c | 218 +++++ common/cmd_pci.c | 7 + drivers/pci/Makefile | 1 + drivers/pci/pci.c | 3 + drivers/pci/pci_tegra.c | 1133 ++++++++++++++++++++++ include/common.h | 14 +- include/configs/beaver.h | 10 + include/configs/cardhu.h | 10 + include/configs/jetson-tk1.h | 10 + include/configs/trimslice.h | 10 + include/dt-bindings/clock/tegra124-car.h | 341 +++++++ include/dt-bindings/clock/tegra20-car.h | 158 +++ include/dt-bindings/clock/tegra30-car.h | 265 +++++ include/dt-bindings/pinctrl/pinctrl-tegra-xusb.h | 7 + include/fdtdec.h | 64 ++ include/libfdt.h | 59 ++ include/pci.h | 1 + lib/fdtdec.c | 61 ++ lib/libfdt/fdt_ro.c | 64 ++ 51 files changed, 5033 insertions(+), 8 deletions(-) create mode 100644 arch/arm/cpu/tegra-common/powergate.c create mode 100644 arch/arm/cpu/tegra-common/xusb-padctl.c create mode 100644 arch/arm/cpu/tegra124-common/xusb-padctl.c create mode 100644 arch/arm/include/asm/arch-tegra/powergate.h create mode 100644 arch/arm/include/asm/arch-tegra/xusb-padctl.h create mode 100644 arch/arm/include/asm/arch-tegra114/powergate.h create mode 100644 arch/arm/include/asm/arch-tegra114/xusb-padctl.h create mode 100644 arch/arm/include/asm/arch-tegra124/powergate.h create mode 100644 arch/arm/include/asm/arch-tegra124/xusb-padctl.h create mode 100644 arch/arm/include/asm/arch-tegra20/powergate.h create mode 100644 arch/arm/include/asm/arch-tegra20/xusb-padctl.h create mode 100644 arch/arm/include/asm/arch-tegra30/powergate.h create mode 100644 arch/arm/include/asm/arch-tegra30/xusb-padctl.h create mode 100644 drivers/pci/pci_tegra.c create mode 100644 include/dt-bindings/clock/tegra124-car.h create mode 100644 include/dt-bindings/clock/tegra20-car.h create mode 100644 include/dt-bindings/clock/tegra30-car.h create mode 100644 include/dt-bindings/pinctrl/pinctrl-tegra-xusb.h