As Linux doesn't wrap PCIe memory space access, it's not possible to do a proper PCIe controller driver for H6.

The initial support for the SoC will be added in kernel 4.17 Differences / New features (compared to H5) High level differences addition of PCIe support (broken, see below) single lane PCIe 2.0 totally undocumented software interface addition of USB 3.0 host Mali T720 instead of Mali 450 DDR4 DRAM support addition of IOMMU though only connected to display controller and video codecs (New?) Audio Hub component Programming model/driver level differences heavily changed memory map (UART0 at 0x05000000, for instance) SRAM locations moved around as well (SRAM A1 at 0x2000 now) bus clock gates and device reset control now grouped by devices and merged into one register (high 16 bits reset, low 16 bits clock gates) DMA controller changed (more than 32 ports, but still limited to 32 bit addresses) no GPIO port A and B Errata The PCIe implementation is broken.Allwinner H6 has a quirky PCIe controller that doesn't map the PCIe address space properly (only 64k accessible at one time) to CPU, and accessing the PCIe config space, I/O space or memory space will need to be wrapped. The Allwinner H6 is an OTT SoC.Contents1 Overview1.1 Differences / New features (compared to H5)1.1.1 High level differences1.1.2 Programming model/driver level differences1.1.3 Errata2 H6 SoC Features3 Documentation4 Register guide5 Software5.1 Original SDK5.2 Boot05.3 U-boot5.3.1 Allwinner5.3.2 Sunxi Community5.3.3 Mainline U-Boot5.4 Kernel code5.4.1 Allwinner5.4.2 Sunxi Community5.4.3 Mainline5.5 GPL Violations5.5.1 H6-lichee-v1.15.5.1.1 kernel5.5.1.2 U-Boot6 Devices OverviewSee Mainlining Effort and Mainline U-Boot for support status.

From Jump to: navigation, search H6ManufacturerAllwinnerProcess28nmCPUQuad-Core ARM Cortex-A53 1.8GHzMemoryLPDDR2/LPDDR3/DDR3/DDR4GPUMali-T720 MP2 600MhzConnectivityVideoHDMI 2.0 with HDCP 2.2, TV CVBS, RGB LCDAudioI2S, PCM, TDMNetworkGBit MAC, integrated 10/100M PHYStorageMMC, NANDUSB1x OTG, 1x Host 2.0, 1x Host 3.0OtherPCIE 2.0 1xRelease DateJune 2017WebsiteProduct PageAllwinner H6 (sun50iw6p1) SoC features a Quad-Core Cortex-A53 ARM CPU, and a Mali-T720 MP2 GPU from ARM.

Sun50iw6p1