Hi Xuwei, All drivers needed to support PCIe on HiKey 970 were merged for Kernel 5.16: - The PHY driver went via PHY tree; - The pcie-kirin changes went via PCI-DWC tree; - The dt-bindings documentation went via DT tree. The only missing piece of the puzzle is the DTS file. It follows the documentation at: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/tree/Documentation/devicetree/bindings/pci/hisilicon,kirin-pcie.yaml and it is pratically identical[1] to the second example there. [1] The only difference is that, on the example, I had to use a different address to avoid conflicts with the HiKey960 example - as - on both hardware - the pcie is at f4000000. Manivannan Sadhasivam (1): arm64: dts: HiSilicon: Add support for HiKey 970 PCIe controller hardware arch/arm64/boot/dts/hisilicon/hi3670.dtsi | 107 ++++++++++++++++++++++ 1 file changed, 107 insertions(+) -- 2.31.1
