Radxa Cubie A7Z - NVMe Hat fail

Cubie Series A7Z
1

Sorry for the interruption. This is a help post regarding the NVMe Hat not being detected.​

I have already tried the methods mentioned in the post: https://forum.radxa.com/t/radxa-cubie-a7z-nvme-hat-not-detected/29080, but they did not work.​

Below is the schematic diagram of this Hat; note that the two 0-ohm resistors are not connected.​

I have checked the 3V3 power supply from the DCDC output, and it is normal.​

The three groups of signal lines have strictly equal lengths.​

Attached are the schematic diagram and physical photos of the PCIe-to-SSD adapter, as well as the hard disk being used.​

The system in use is the official B2 system, sourced from: https://github.com/radxa-build/radxa-cubie-a7z/releases, and the system boots from UFS.​

Relevant Logs:​

​

plaintext

[ 3.060690] [ T9] pci_bus 0000:00: root bus resource [bus 00-ff]​

[ 3.060711] [ T9] pci_bus 0000:00: root bus resource [??? 0x20000000-0x20ffffff flags 0x0]​

[ 3.060735] [ T9] pci_bus 0000:00: root bus resource [io 0x0000-0xffffff] (bus address [0x21000000-0x21ffffff])​

[ 3.060754] [ T9] pci_bus 0000:00: root bus resource [mem 0x22000000-0x27ffffff]​

[ 3.060826] [ T9] pci 0000:00:00.0: [1f6d:abcd] type 01 class 0x060400​

[ 3.060863] [ T9] pci 0000:00:00.0: reg 0x10: [mem 0x00000000-0x000fffff]​

[ 3.060893] [ T9] pci 0000:00:00.0: reg 0x38: [mem 0x22100000-0x2210ffff pref]​

[ 3.061018] [ T9] pci 0000:00:00.0: supports D1​

[ 3.061033] [ T9] pci 0000:00:00.0: PME# supported from D0 D1 D3hot​

[ 3.093102] [ T9] pci 0000:00:00.0: BAR 0: assigned [mem 0x22000000-0x220fffff]​

[ 3.093143] [ T9] pci 0000:00:00.0: BAR 6: assigned [mem 0x22100000-0x2210ffff pref]​

[ 3.093168] [ T9] pci 0000:00:00.0: PCI bridge to [bus 01-ff]​

[ 3.093264] [ T9] sunxi:pcie-6000000.pcie:[INFO]: driver version: 1.2.4​

[ 24.998071] [ T120] sunxi:sunxi_pd_test-soc@3000000:pd_pcie_test@0:[WARN]: runtime_suspend disable clock​

​

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[17:36:09] radxa:~ % lspci -vvv​

00:00.0 PCI bridge: Device 1f6d:abcd (rev 01) (prog-if 00 [Normal decode])​

    Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-​

    Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-​

    Latency: 0, Cache Line Size: 32 bytes​

    Interrupt: pin A routed to IRQ 255​

    Region 0: Memory at 22000000 (32-bit, non-prefetchable) \[size=1M\]​

    Bus: primary=00, secondary=01, subordinate=ff, sec-latency=0​

    I/O behind bridge: f000-0fff \[disabled\] \[16-bit\]​

    Memory behind bridge: fff00000-000fffff \[disabled\] \[32-bit\]​

    Prefetchable memory behind bridge: 00000000fff00000-00000000000fffff \[disabled\] \[64-bit\]​

    Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- <SERR- <PERR-​

    Expansion ROM at 22100000 \[disabled\] \[size=64K\]​

    BridgeCtl: Parity- SERR+ NoISA- VGA- VGA16- MAbort- >Reset- FastB2B-​

            PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-​

    Capabilities: <access denied>​

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0d63c169a6327039a92bdcbed95b290
0d63c169a6327039a92bdcbed95b2901706×1279 362 KB

fadd0fc85f178515feeb00f03130f43
fadd0fc85f178515feeb00f03130f431706×1280 211 KB

647f26468a31052542f059298639670
647f26468a31052542f0592986396701920×1365 687 KB

2

The SSD in use is: Huawei（华为） P46 256GB M.2 NVMe PCIe 3.0 x4

3

If anyone can help check the schematic diagram, point out any errors in it, or if more information is needed to assist with troubleshooting, please leave a comment. I will reply and provide supplementary details promptly.​

Thank you very much for your attention!