This patch series enables Tegra194's C5 controller which owns x16 slot in p2972-0000 platform. C5 controller's PERST# and CLKREQ# are not configured as output and bi-directional signals by default and hence they need to be configured explicitly. Also, x16 slot's 3.3V and 12V supplies are controlled through GPIOs and hence they need to be enabled through regulator framework. This patch series adds required infrastructural support to address both the aforementioned requirements. Testing done on p2972-0000 platform - Able to enumerate devices connected to x16 slot (owned by C5 controller) - Enumerated device's functionality verified - Suspend-Resume sequence is verified with device connected to x16 slot Vidya Sagar (6): dt-bindings: PCI: tegra: Add sideband pins configuration entries arm64: tegra: Add configuration for PCIe C5 sideband signals PCI: tegra: Add support to configure sideband pins dt-bindings: PCI: tegra: Add PCIe slot supplies regulator entries arm64: tegra: Add PCIe slot supply information in p2972-0000 platform PCI: tegra: Add support to enable slot regulators .../bindings/pci/nvidia,tegra194-pcie.txt | 16 +++++ .../arm64/boot/dts/nvidia/tegra194-p2888.dtsi | 24 +++++++ .../boot/dts/nvidia/tegra194-p2972-0000.dts | 4 +- arch/arm64/boot/dts/nvidia/tegra194.dtsi | 38 +++++++++- drivers/pci/controller/dwc/pcie-tegra194.c | 71 +++++++++++++++++++ 5 files changed, 151 insertions(+), 2 deletions(-) -- 2.17.1
