[ERROR] PCI memory allocation (BAR Registers) on T1042D4RDB-64B

[yusufalti333]

Hello,

My problem is briefly, PCI is not allocating memory on t1042d4-64b demo board.

Below is the 'dmesg' messages and U-boot messages.

I will be grateful for your helps.

'dmesg' messages from Linux

[    0.464934] pci 0000:00:00.0: bridge configuration invalid ([bus 00-00]), reconfiguring
[    0.473580] pci 0000:00:00.0: PCI bridge to [bus 01-ff]
[    0.477426] pci 0000:00:00.0:   bridge window [io  0x8000080000010000-0x8000080000010fff]
[    0.477431] pci 0000:00:00.0:   bridge window [mem 0x00000000-0x000fffff]
[    0.477438] pci 0000:00:00.0:   bridge window [mem 0x00000000-0x000fffff 64bit pref]
[    0.477451] pci_bus 0000:01: busn_res: [bus 01-ff] end is updated to 01
[    0.477456] pci_bus 0000:00: busn_res: [bus 00-ff] end is updated to 01
[    0.477584] fsl-pci ffe250000.pcie: PCI host bridge to bus 0001:00
[    0.482383] pci_bus 0001:00: root bus resource [io  0x8000080000021000-0x8000080000030fff] (bus address [0x0000-0xffff])
[    0.491940] pci_bus 0001:00: root bus resource [mem 0xc10000000-0xc1fffffff] (bus address [0xe0000000-0xefffffff])
[    0.500980] pci_bus 0001:00: root bus resource [bus 00-01]
[    0.505153] pci_bus 0001:00: busn_res: [bus 00-01] end is updated to ff
[    0.505172] pci 0001:00:00.0: [1957:0824] type 01 class 0x0b2000
[    0.505191] pci 0001:00:00.0: reg 0x10: [mem 0xff000000-0xffffffff]
[    0.505236] pci 0001:00:00.0: supports D1 D2
[    0.505239] pci 0001:00:00.0: PME# supported from D0 D1 D2 D3hot D3cold
[    0.505346] iommu: Removing device ffe250000.pcie from group 20
[    0.509901] iommu: Adding device 0001:00:00.0 to group 19
[    0.516106] pci 0001:01:00.0: [1002:6987] type 00 class 0x030000
[    0.516160] pci 0001:01:00.0: reg 0x10: [mem 0xc10000000-0xc1fffffff 64bit pref]
[    0.516175] pci 0001:01:00.0: reg 0x18: [mem 0x1000ffe00000-0x1000ffffffff 64bit pref]
[    0.516186] pci 0001:01:00.0: reg 0x20: [io  0x8000080000022100-0x80000800000221ff]
[    0.516196] pci 0001:01:00.0: reg 0x24: [mem 0xfffc0000-0xffffffff]
[    0.516207] pci 0001:01:00.0: reg 0x30: [mem 0xfffe0000-0xffffffff pref]
[    0.516219] pci 0001:01:00.0: enabling Extended Tags
[    0.519920] pci 0001:01:00.0: supports D1 D2
[    0.519923] pci 0001:01:00.0: PME# supported from D1 D2 D3hot D3cold
[    0.519958] pci 0001:01:00.0: 4.000 Gb/s available PCIe bandwidth, limited by 5 GT/s x1 link at 0001:00:00.0 (capable of 63.008 Gb/s with 8 GT/s x8 link)
[    0.532404] iommu: Adding device 0001:01:00.0 to group 19
[    0.536460] pci 0001:01:00.1: [1002:aae0] type 00 class 0x040300
[    0.536500] pci 0001:01:00.1: reg 0x10: [mem 0x1200ffffc000-0x1200ffffffff 64bit]
[    0.536553] pci 0001:01:00.1: enabling Extended Tags
[    0.540200] pci 0001:01:00.1: supports D1 D2
[    0.540291] iommu: Adding device 0001:01:00.1 to group 19
[    0.546301] pci 0001:00:00.0: PCI bridge to [bus 01-ff]
[    0.550147] pci 0001:00:00.0:   bridge window [io  0x8000080000022000-0x8000080000022fff]
[    0.550152] pci 0001:00:00.0:   bridge window [mem 0xc10000000-0xc1fffffff]
[    0.550235] pci_bus 0001:01: busn_res: [bus 01-ff] end is updated to 01
[    0.550242] pci_bus 0001:00: busn_res: [bus 00-ff] end is updated to 01
[    0.550376] fsl-pci ffe260000.pcie: PCI host bridge to bus 0002:00
[    0.555177] pci_bus 0002:00: root bus resource [io  0x8000080000032000-0x8000080000041fff] (bus address [0x0000-0xffff])
[    0.564732] pci_bus 0002:00: root bus resource [mem 0xc20000000-0xc2fffffff] (bus address [0xe0000000-0xefffffff])
[    0.573773] pci_bus 0002:00: root bus resource [bus 00]
[    0.577680] pci_bus 0002:00: busn_res: [bus 00] end is updated to ff
[    0.577698] pci 0002:00:00.0: [1957:0824] type 01 class 0x0b2000
[    0.577718] pci 0002:00:00.0: reg 0x10: [mem 0xff000000-0xffffffff]
[    0.577764] pci 0002:00:00.0: supports D1 D2
[    0.577767] pci 0002:00:00.0: PME# supported from D0 D1 D2 D3hot D3cold
[    0.577880] iommu: Removing device ffe260000.pcie from group 21
[    0.582434] iommu: Adding device 0002:00:00.0 to group 20
[    0.588545] pci 0002:00:00.0: bridge configuration invalid ([bus 00-00]), reconfiguring
[    0.597194] pci 0002:00:00.0: PCI bridge to [bus 01-ff]
[    0.601040] pci 0002:00:00.0:   bridge window [io  0x8000080000032000-0x8000080000032fff]
[    0.601045] pci 0002:00:00.0:   bridge window [mem 0x00000000-0x000fffff]
[    0.601052] pci 0002:00:00.0:   bridge window

[    0.601064] pci_bus 0002:01: busn_res: [bus 01-ff] end is updated to 01
[    0.601070] pci_bus 0002:00: busn_res: [bus 00-ff] end is updated to 01
[    0.601197] fsl-pci ffe270000.pcie: PCI host bridge to bus 0003:00
[    0.605995] pci_bus 0003:00: root bus resource [io  0x8000080000043000-0x8000080000052fff] (bus address [0x0000-0xffff])
[    0.615553] pci_bus 0003:00: root bus resource [mem 0xc30000000-0xc3fffffff] (bus address [0xe0000000-0xefffffff])
[    0.624593] pci_bus 0003:00: root bus resource [bus 00]

[    0.601064] pci_bus 0002:01: busn_res: [bus 01-ff] end is updated to 01
[    0.601070] pci_bus 0002:00: busn_res: [bus 00-ff] end is updated to 01
[    0.601197] fsl-pci ffe270000.pcie: PCI host bridge to bus 0003:00
[    0.605995] pci_bus 0003:00: root bus resource [io  0x8000080000043000-0x8000080000052fff] (bus address [0x0000-0xffff])
[    0.615553] pci_bus 0003:00: root bus resource [mem 0xc30000000-0xc3fffffff] (bus address [0xe0000000-0xefffffff])
[    0.624593] pci_bus 0003:00: root bus resource [bus 00]
[    0.628501] pci_bus 0003:00: busn_res: [bus 00] end is updated to ff
[    0.628519] pci 0003:00:00.0: [1957:0824] type 01 class 0x0b2000
[    0.628538] pci 0003:00:00.0: reg 0x10: [mem 0xff000000-0xffffffff]
[    0.628584] pci 0003:00:00.0: supports D1 D2
[    0.628588] pci 0003:00:00.0: PME# supported from D0 D1 D2 D3hot D3cold
[    0.628703] iommu: Removing device ffe270000.pcie from group 22
[    0.633257] iommu: Adding device 0003:00:00.0 to group 21
[    0.639362] pci 0003:00:00.0: bridge configuration invalid ([bus 00-00]), reconfiguring
[    0.651912] pci 0003:00:00.0:   bridge window [io  0x8000080000043000-0x8000080000043fff]
[    0.651917] pci 0003:00:00.0:   bridge window [mem 0x00000000-0x000fffff]
[    0.651923] pci 0003:00:00.0:   bridge window [mem 0x00000000-0x000fffff 64bit pref]

[    0.628501] pci_bus 0003:00: busn_res: [bus 00] end is updated to ff
[    0.628519] pci 0003:00:00.0: [1957:0824] type 01 class 0x0b2000
[    0.628538] pci 0003:00:00.0: reg 0x10: [mem 0xff000000-0xffffffff]
[    0.628584] pci 0003:00:00.0: supports D1 D2
[    0.628588] pci 0003:00:00.0: PME# supported from D0 D1 D2 D3hot D3cold
[    0.628703] iommu: Removing device ffe270000.pcie from group 22
[    0.633257] iommu: Adding device 0003:00:00.0 to group 21
[    0.639362] pci 0003:00:00.0: bridge configuration invalid ([bus 00-00]), reconfiguring
[    0.651912] pci 0003:00:00.0:   bridge window [io  0x8000080000043000-0x8000080000043fff]
[    0.651917] pci 0003:00:00.0:   bridge window [mem 0x00000000-0x000fffff]
[    0.651923] pci 0003:00:00.0:   bridge window [mem 0x00000000-0x000fffff 64bit pref]
[    0.651936] pci_bus 0003:01: busn_res: [bus 01-ff] end is updated to 01
[    0.651942] pci_bus 0003:00: busn_res: [bus 00-ff] end is updated to 01
[    0.651988] PCI: Cannot allocate resource region 0 of device 0000:00:00.0, will remap
[    0.658435] PCI: Cannot allocate resource region 0 of device 0001:00:00.0, will remap
[    0.664953] PCI: Cannot allocate resource region 2 of device 0001:01:00.0, will remap
[    0.671469] PCI: Cannot allocate resource region 5 of device 0001:01:00.0, will remap
[    0.677989] PCI: Cannot allocate resource region 6 of device 0001:01:00.0, will remap
[    0.684514] PCI: Cannot allocate resource region 0 of device 0001:01:00.1, will remap
[    0.691033] PCI: Cannot allocate resource region 0 of device 0002:00:00.0, will remap
[    0.697552] PCI: Cannot allocate resource region 0 of device 0003:00:00.0, will remap
[    0.704083] PCI 0000:00 Cannot reserve Legacy IO [io  0x8000080000010000-0x10fff]
[    0.704086] PCI 0001:00 Cannot reserve Legacy IO [io  0x8000080000021000-0x21fff]
[    0.704089] PCI 0002:00 Cannot reserve Legacy IO [io  0x8000080000032000-0x32fff]
[    0.704092] PCI 0003:00 Cannot reserve Legacy IO [io  0x8000080000043000-0x43fff]
[    0.704107] pci 0000:00:00.0: BAR 0: no space for [mem size 0x01000000]
[    0.709375] pci 0000:00:00.0: BAR 0: failed to assign [mem size 0x01000000]
[    0.715026] pci 0000:00:00.0: PCI bridge to [bus 01]
[    0.718673] pci 0000:00:00.0:   bridge window [io  0x8000080000010000-0x800008000001ffff]
[    0.725545] pci 0000:00:00.0:   bridge window [mem 0xc00000000-0xc0fffffff]
[    0.731196] pci_bus 0000:00: Some PCI device resources are unassigned, try booting with pci=realloc
[    0.738932] pci_bus 0000:00: resource 4 [io  0x8000080000010000-0x800008000001ffff]
[    0.738935] pci_bus 0000:00: resource 5 [mem 0xc00000000-0xc0fffffff]
[    0.738939] pci_bus 0000:01: resource 0 [io  0x8000080000010000-0x800008000001ffff]
[    0.738942] pci_bus 0000:01: resource 1 [mem 0xc00000000-0xc0fffffff]
[    0.738953] pci 0001:00:00.0: BAR 0: no space for [mem size 0x01000000]
[    0.744235] pci 0001:00:00.0: BAR 0: failed to assign [mem size 0x01000000]
[    0.749887] pci 0001:00:00.0: BAR 9: no space for [mem size 0x00200000 64bit pref]
[    0.756144] pci 0001:00:00.0: BAR 9: failed to assign [mem size 0x00200000 64bit pref]
[    0.762754] pci 0001:01:00.0: BAR 2: no space for [mem size 0x00200000 64bit pref]
[    0.769010] pci 0001:01:00.0: BAR 2: failed to assign [mem size 0x00200000 64bit pref]
[    0.775617] pci 0001:01:00.0: BAR 5: no space for [mem size 0x00040000]
[    0.780920] pci 0001:01:00.0: BAR 5: failed to assign [mem size 0x00040000]
[    0.786571] pci 0001:01:00.0: BAR 6: no space for [mem size 0x00020000 pref]
[    0.792308] pci 0001:01:00.0: BAR 6: failed to assign [mem size 0x00020000 pref]
[    0.798394] pci 0001:01:00.1: BAR 0: no space for [mem size 0x00004000 64bit]
[    0.804218] pci 0001:01:00.1: BAR 0: failed to assign [mem size 0x00004000 64bit]
[    0.810391] pci 0001:00:00.0: PCI bridge to [bus 01]
[    0.814038] pci 0001:00:00.0:   bridge window [io  0x8000080000021000-0x8000080000030fff]
[    0.820910] pci 0001:00:00.0:   bridge window [mem 0xc10000000-0xc1fffffff]
[    0.826561] pci_bus 0001:00: Some PCI device resources are unassigned, try booting with pci=realloc
[    0.834298] pci_bus 0001:00: resource 4 [io  0x8000080000021000-0x8000080000030fff]
[    0.834301] pci_bus 0001:00: resource 5 [mem 0xc10000000-0xc1fffffff]
[    0.834305] pci_bus 0001:01: resource 0 [io  0x8000080000021000-0x8000080000030fff]
[    0.834308] pci_bus 0001:01: resource 1 [mem 0xc10000000-0xc1fffffff]
[    0.834318] pci 0002:00:00.0: BAR 0: no space for [mem size 0x01000000]
[    0.839600] pci 0002:00:00.0: BAR 0: failed to assign [mem size 0x01000000]
[    0.845251] pci 0002:00:00.0: PCI bridge to [bus 01]
[    0.848898] pci 0002:00:00.0:   bridge window [io  0x8000080000032000-0x8000080000041fff]
[    0.855780] pci 0002:00:00.0:   bridge window [mem 0xc20000000-0xc2fffffff]
[    0.861422] pci_bus 0002:00: Some PCI device resources are unassigned, try booting with pci=realloc
[    0.869158] pci_bus 0002:00: resource 4 [io  0x8000080000032000-0x8000080000041fff]
[    0.869161] pci_bus 0002:00: resource 5 [mem 0xc20000000-0xc2fffffff]
[    0.869165] pci_bus 0002:01: resource 0 [io  0x8000080000032000-0x8000080000041fff]
[    0.869168] pci_bus 0002:01: resource 1 [mem 0xc20000000-0xc2fffffff]
[    0.869178] pci 0003:00:00.0: BAR 0: no space for [mem size 0x01000000]
[    0.874468] pci 0003:00:00.0: BAR 0: failed to assign [mem size 0x01000000]
[    0.880112] pci 0003:00:00.0: PCI bridge to [bus 01]
[    0.883759] pci 0003:00:00.0:   bridge window [io  0x8000080000043000-0x8000080000052fff]
[    0.890632] pci 0003:00:00.0:   bridge window [mem 0xc30000000-0xc3fffffff]
[    0.896284] pci_bus 0003:00: Some PCI device resources are unassigned, try booting with pci=realloc
[    0.904018] pci_bus 0003:00: resource 4 [io  0x8000080000043000-0x8000080000052fff]
[    0.904022] pci_bus 0003:00: resource 5 [mem 0xc30000000-0xc3fffffff]
[    0.904025] pci_bus 0003:01: resource 0 [io  0x8000080000043000-0x8000080000052fff]
[    0.904028] pci_bus 0003:01: resource 1 [mem 0xc30000000-0xc3fffffff]
[    0.904030] PCI: Probing PCI hardware done

PCI console messages from U-BOOT

PCI: Probing PCI hardware
fsl-pci ffe240000.pcie: PCI host bridge to bus 0000:00
pci_bus 0000:00: root bus resource [io  0x8000080000010000-0x800008000001ffff] (bus address [0x0000-0xffff])
pci_bus 0000:00: root bus resource [mem 0xc00000000-0xc0fffffff] (bus address [0xe0000000-0xefffffff])
pci_bus 0000:00: root bus resource [bus 00]
iommu: Removing device ffe240000.pcie from group 19
iommu: Adding device 0000:00:00.0 to group 24
pci 0000:00:00.0: bridge configuration invalid ([bus 00-00]), reconfiguring
pci 0000:00:00.0: PCI bridge to [bus 01-ff]
fsl-pci ffe250000.pcie: PCI host bridge to bus 0001:00
pci_bus 0001:00: root bus resource [io  0x8000080000021000-0x8000080000030fff] (bus address [0x0000-0xffff])
pci_bus 0001:00: root bus resource [mem 0xc10000000-0xc1fffffff] (bus address [0xe0000000-0xefffffff])
pci_bus 0001:00: root bus resource [bus 00-01]
iommu: Removing device ffe250000.pcie from group 20
iommu: Adding device 0001:00:00.0 to group 19
pci 0001:01:00.0: enabling Extended Tags
pci 0001:01:00.0: 4.000 Gb/s available PCIe bandwidth, limited by 5 GT/s x1 link at 0001:00:00.0 (capable of 63.008 Gb/s with 8 GT/s x8 link)
iommu: Adding device 0001:01:00.0 to group 19
pci 0001:01:00.1: enabling Extended Tags
iommu: Adding device 0001:01:00.1 to group 19
pci 0001:00:00.0: PCI bridge to [bus 01-ff]
fsl-pci ffe260000.pcie: PCI host bridge to bus 0002:00
pci_bus 0002:00: root bus resource [io  0x8000080000032000-0x8000080000041fff] (bus address [0x0000-0xffff])
pci_bus 0002:00: root bus resource [mem 0xc20000000-0xc2fffffff] (bus address [0xe0000000-0xefffffff])
pci_bus 0002:00: root bus resource [bus 00]
iommu: Removing device ffe260000.pcie from group 21
iommu: Adding device 0002:00:00.0 to group 20
pci 0002:00:00.0: bridge configuration invalid ([bus 00-00]), reconfiguring
pci 0002:00:00.0: PCI bridge to [bus 01-ff]
fsl-pci ffe270000.pcie: PCI host bridge to bus 0003:00
pci_bus 0003:00: root bus resource [io  0x8000080000043000-0x8000080000052fff] (bus address [0x0000-0xffff])
pci_bus 0003:00: root bus resource [mem 0xc30000000-0xc3fffffff] (bus address [0xe0000000-0xefffffff])
pci_bus 0003:00: root bus resource [bus 00]
iommu: Removing device ffe270000.pcie from group 22
iommu: Adding device 0003:00:00.0 to group 21
pci 0003:00:00.0: bridge configuration invalid ([bus 00-00]), reconfiguring
pci 0003:00:00.0: PCI bridge to [bus 01-ff]
PCI: Cannot allocate resource region 0 of device 0000:00:00.0, will remap
PCI: Cannot allocate resource region 0 of device 0001:00:00.0, will remap
PCI: Cannot allocate resource region 2 of device 0001:01:00.0, will remap
PCI: Cannot allocate resource region 5 of device 0001:01:00.0, will remap
PCI: Cannot allocate resource region 6 of device 0001:01:00.0, will remap
PCI: Cannot allocate resource region 0 of device 0001:01:00.1, will remap
PCI: Cannot allocate resource region 0 of device 0002:00:00.0, will remap
PCI: Cannot allocate resource region 0 of device 0003:00:00.0, will remap
pci 0000:00:00.0: BAR 0: no space for [mem size 0x01000000]
pci 0000:00:00.0: BAR 0: failed to assign [mem size 0x01000000]
pci 0000:00:00.0: PCI bridge to [bus 01]
pci 0000:00:00.0:   bridge window [io  0x8000080000010000-0x800008000001ffff]
pci 0000:00:00.0:   bridge window [mem 0xc00000000-0xc0fffffff]
pci_bus 0000:00: Some PCI device resources are unassigned, try booting with pci=realloc
pci 0001:00:00.0: BAR 0: no space for [mem size 0x01000000]
pci 0001:00:00.0: BAR 0: failed to assign [mem size 0x01000000]
pci 0001:00:00.0: BAR 9: no space for [mem size 0x00200000 64bit pref]
pci 0001:00:00.0: BAR 9: failed to assign [mem size 0x00200000 64bit pref]
pci 0001:01:00.0: BAR 2: no space for [mem size 0x00200000 64bit pref]
pci 0001:01:00.0: BAR 2: failed to assign [mem size 0x00200000 64bit pref]
pci 0001:01:00.0: BAR 5: no space for [mem size 0x00040000]
pci 0001:01:00.0: BAR 5: failed to assign [mem size 0x00040000]
pci 0001:01:00.0: BAR 6: no space for [mem size 0x00020000 pref]
pci 0001:01:00.0: BAR 6: failed to assign [mem size 0x00020000 pref]
pci 0001:01:00.1: BAR 0: no space for [mem size 0x00004000 64bit]
pci 0001:01:00.1: BAR 0: failed to assign [mem size 0x00004000 64bit]
pci 0001:00:00.0: PCI bridge to [bus 01]
pci 0001:00:00.0:   bridge window [io  0x8000080000021000-0x8000080000030fff]
pci 0001:00:00.0:   bridge window [mem 0xc10000000-0xc1fffffff]
pci_bus 0001:00: Some PCI device resources are unassigned, try booting with pci=realloc
pci 0002:00:00.0: BAR 0: no space for [mem size 0x01000000]
pci 0002:00:00.0: BAR 0: failed to assign [mem size 0x01000000]
pci 0002:00:00.0: PCI bridge to [bus 01]
pci 0002:00:00.0:   bridge window [io  0x8000080000032000-0x8000080000041fff]
pci 0002:00:00.0:   bridge window [mem 0xc20000000-0xc2fffffff]
pci_bus 0002:00: Some PCI device resources are unassigned, try booting with pci=realloc
pci 0003:00:00.0: BAR 0: no space for [mem size 0x01000000]
pci 0003:00:00.0: BAR 0: failed to assign [mem size 0x01000000]
pci 0003:00:00.0: PCI bridge to [bus 01]
pci 0003:00:00.0:   bridge window [io  0x8000080000043000-0x8000080000052fff]
pci 0003:00:00.0:   bridge window [mem 0xc30000000-0xc3fffffff]
pci_bus 0003:00: Some PCI device resources are unassigned, try booting with pci=realloc

[yusufalti333 · Accepted solution]

Hello yipingwang‌,

I solved the problem by using a gap area between PCIe2 and PCIe3. My drivers seems need 2 MB more space after the end of 256 MB offset.

But there are still points I do not understand. Even if I arrange 4 GB or more for PCIe2, kernel is only taking 256 MB + 2MB and not more and the reason behind it seems BUS_ADRESS which is 0xE0000000. I tried to change this to 0x0 but system crashed with machine check. Is it impossible to change this value? Why it's acting like 32 bit linux kernel ?

from dmesg:

Device tree node: /sys/firmware/devicetree/base/pcie@ffe250000/pcie@0
Flags: bus master, fast devsel, latency 0, IRQ 21
Memory at <ignored> (32-bit, non-prefetchable)
Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
I/O behind bridge: 00000000-0000ffff [size=64K]
Memory behind bridge: e0000000-ffffffff [size=512M] <--------------------

Here, base adress is always beginning with e0000000 and acting like 32 bit.

and I also realized that changing only the linux kernel (.dtsi) file is enough to make driver run. PCIe2 - 3 and 4 does not even have a TLB entry. I checked tlb.c file in u-boot.

This is Device Tree Source successfully worked:

pci0: pcie@ffe240000 {
        reg = <0xf 0xfe240000 0 0x10000>;
        ranges = <0x02000000 0 0xe0000000 0x2 0x0 0x0 0x10000000
              0x01000000 0 0x0 0xf 0xf8000000 0x0 0x00010000>;
        pcie@0 {
            ranges = <0x02000000 0 0xe0000000
                  0x02000000 0 0xe0000000
                  0 0x10000000

                  0x01000000 0 0x00000000
                  0x01000000 0 0x00000000
                  0 0x00010000>;
        };
    };

    pci1: pcie@ffe250000 {
        reg = <0xf 0xfe250000 0 0x10000>;
        ranges = <0x02000000 0 0xe0000000 0x2 0x10000000 0x1 0x00000000
              0x01000000 0 0 0xf 0xf8010000 0 0x00010000>;
        pcie@0 {
            ranges = <0x02000000 0 0xe0000000
                  0x02000000 0 0xe0000000
                  0x1 0x00000000

                  0x01000000 0 0x00000000
                  0x01000000 0 0x00000000
                  0 0x00010000>;
        };
    };

    pci2: pcie@ffe260000 {
        reg = <0xf 0xfe260000 0 0x10000>;
        ranges = <0x02000000 0 0xe0000000 0x3 0x20000000 0 0x10000000
              0x01000000 0 0x00000000 0xf 0xf8020000 0 0x00010000>;
        pcie@0 {
            ranges = <0x02000000 0 0xe0000000
                  0x02000000 0 0xe0000000
                  0 0x10000000

                  0x01000000 0 0x00000000
                  0x01000000 0 0x00000000
                  0 0x00010000>;
        };
    };

    pci3: pcie@ffe270000 {
        reg = <0xf 0xfe270000 0 0x10000>;
        ranges = <0x02000000 0 0xe0000000 0x3 0x30000000 0 0x10000000
              0x01000000 0 0x00000000 0xf 0xf8030000 0 0x00010000>;
        pcie@0 {
            ranges = <0x02000000 0 0xe0000000
                  0x02000000 0 0xe0000000
                  0 0x10000000

                  0x01000000 0 0x00000000
                  0x01000000 0 0x00000000
                  0 0x00010000>;
        };
    };

[yusufalti333]

Hello Yiping, I changed the dtsi and config file as you said. It did not work. Then I changed memory size as 4GB and I/O size as 1MB. The driver worked successfully but Linux started to freeze. This is the console log of driver;

[drm] initializing kernel modesetting (POLARIS12 0x1002:0x6987 0x1787:0x2389 0x80). 
[drm] register mmio base: 0x20200000                                                  
fsl-fman-port ffe488000.port fm1-gb0: renamed from eth0                              
[drm] register mmio size: 262144                                                      
[drm] add ip block number 0 <vi_common>                                              
[drm] add ip block number 1 <gmc_v8_0>                                                
[drm] add ip block number 2 <tonga_ih>                                                
[drm] add ip block number 3 <powerplay>                                              
[drm] add ip block number 4 <dm>                                                      
[drm] add ip block number 5 <gfx_v8_0>                                                
[drm] add ip block number 6 <sdma_v3_0>                                              
[drm] add ip block number 7 <uvd_v6_0>                                                
[drm] add ip block number 8 <vce_v3_0>                                                
[drm] UVD is enabled in VM mode                                                      
[drm] UVD ENC is enabled in VM mode                                                  
[drm] VCE enabled in VM mode                                                          
ATOM BIOS: 113-ER16BFC-001                                                            
[drm] GPU posting now...                                                              
Disabling lock debugging due to kernel taint                                          
Machine check in kernel mode.                                                        
Caused by (from MCSR=a000): Load Error Report                                        
Guarded Load Error Report                                                            
Kernel panic - not syncing: Unrecoverable Machine check                              
CPU: 1 PID: 2023 Comm: udevd Tainted: G   M              4.19.26+gc0c2141 #1          
Call Trace: