MLU220 m.2加速卡是否支持pcie x1？

插在pcie x1接口上，驱动加载报错，aarch64 cpu 主控

错误信息如下：

[  811.259860] Call trace:

[  811.259865]  __ioremap_caller+0xbc/0xe0

[  811.259868]  __ioremap+0x10/0x18

[  811.260002]  c20e_pcie_pre_init+0xec/0x560 [cambricon_drv]

[  811.260094]  cn_bus_probe+0x6c/0xe0 [cambricon_drv]

[  811.260192]  cn_pci_probe+0x314/0x580 [cambricon_drv]

[  811.260207]  pci_device_probe+0xb4/0x168

[  811.260217]  really_probe+0xd8/0x2f8

[  811.260224]  driver_probe_device+0x54/0xe8

[  811.260233]  device_driver_attach+0x6c/0x78

[  811.260240]  __driver_attach+0x54/0xd0

[  811.260247]  bus_for_each_dev+0x6c/0xc0

[  811.260256]  driver_attach+0x20/0x28

[  811.260262]  bus_add_driver+0x148/0x1e0

[  811.260270]  driver_register+0x60/0x110

[  811.260283]  __pci_register_driver+0x40/0x48

[  811.260375]  cn_pci_drv_init_release+0x70/0x88 [cambricon_drv]

[  811.260467]  cn_bus_driver_reg+0x2c/0x48 [cambricon_drv]

[  811.260564]  cn_core_init+0x154/0x1000 [cambricon_drv]

[  811.260573]  do_one_initcall+0x50/0x190

[  811.260585]  do_init_module+0x50/0x1f0

[  811.260591]  load_module+0x1ca4/0x2218

[  811.260599]  __do_sys_finit_module+0xd0/0xe8

[  811.260607]  __arm64_sys_finit_module+0x1c/0x28

[  811.260615]  el0_svc_common.constprop.0+0x68/0x160

[  811.260623]  el0_svc_handler+0x6c/0x88

[  811.260629]  el0_svc+0x8/0xc

[  811.260636] ---[ end trace 73cbc3099a7f27df ]---

[  811.260660] cambricon-pci-drv_release: probe of 0000:01:00.0 failed with error -14