根据供应商提供的切换成双屏同显的操作，
1.修改设备树
在.dts下找到disp节点
disp: disp@01000000 {
disp_init_enable = <1>;
disp_mode = <5>; //0-异显 5-同显
2.勾选内核
CONFIG_DISP2_SUNXI_MUTI_SCREEN = y
会出以下报错
[ 5.707506] usbcore: registered new interface driver usbserial_generic
[ 5.707559] usbserial: USB Serial support registered for generic
[ 5.707639] usbcore: registered new interface driver ch341
[ 5.707689] usbserial: USB Serial support registered for ch341-uart
[ 5.707766] usbcore: registered new interface driver option
[ 5.707817] usbserial: USB Serial support registered for GSM modem (1-port)
[ 5.708217] usbcore: registered new interface driver pl2303
[ 5.708270] usbserial: USB Serial support registered for pl2303
[ 5.708366] usbcore: registered new interface driver quatech2
[ 5.708412] usbserial: USB Serial support registered for Quatech 2nd gen USB to Serial Driver
[ 5.711280] usb_serial_number:20080411
[ 5.711960] dummy_hcd dummy_hcd.0: USB Host+Gadget Emulator, driver 02 May 2005
[ 5.711969] dummy_hcd dummy_hcd.0: Dummy host controller
[ 5.712227] dummy_hcd dummy_hcd.0: new USB bus registered, assigned bus number 7
[ 5.712419] usb usb7: New USB device found, idVendor=1d6b, idProduct=0002
[ 5.712425] usb usb7: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 5.712431] usb usb7: Product: Dummy host controller
[ 5.712436] usb usb7: Manufacturer: Linux 4.9.170 dummy_hcd
[ 5.712441] usb usb7: SerialNumber: dummy_hcd.0
[ 5.713125] hub 7-0:1.0: USB hub found
[ 5.713157] hub 7-0:1.0: 1 port detected
[ 5.715049] sunxikbd_key_init: key0 vol= 210 code= 115
[ 5.715055] sunxikbd_key_init: key1 vol= 410 code= 114
[ 5.715061] sunxikbd_key_init: key2 vol= 590 code= 139
[ 5.715066] sunxikbd_key_init: key3 vol= 750 code= 28
[ 5.715071] sunxikbd_key_init: key4 vol= 880 code= 172
[ 5.715372] input: sunxi-keyboard as /devices/virtual/input/input0
[ 5.715928] usbcore: registered new interface driver xpad
[ 5.716010] usbcore: registered new interface driver usb_acecad
[ 5.716089] usbcore: registered new interface driver aiptek
[ 5.716163] usbcore: registered new interface driver gtco
[ 5.716245] usbcore: registered new interface driver hanwang
[ 5.716373] usbcore: registered new interface driver kbtab
[ 5.716678] /drivers/input/touchscreen
[ 5.716709] of_get_named_gpiod_flags: parsed 'goodix_int' property of node '/soc@03000000/twi@0x05003000/gt911@5d[0]' - s tatus (0)
[ 5.829760] usb 2-1: new high-speed USB device number 2 using sunxi-ehci
[ 5.846423] usb 3-1: new high-speed USB device number 2 using sunxi-ehci
[ 6.567254] DE invalid address: 0xaff02000, data:0x0, id:0x1
[ 6.573677] L1 PageTable Invalid
[ 6.577303] 0xaff02000 is not mapped!
[ 6.581415] DE invalid address: 0xaff02000, data:0x0, id:0x1
[ 6.587820] L1 PageTable Invalid
[ 6.587830] Goodix-TS 4-005d: i2c test failed attempt 1: -70
[ 6.597798] 0xaff02000 is not mapped!
[ 6.601910] DE invalid address: 0xaff02000, data:0x0, id:0x1
[ 6.608284] L1 PageTable Invalid
[ 6.611907] 0xaff02000 is not mapped!
[ 6.616019] DE invalid address: 0xaff02000, data:0x0, id:0x1
[ 6.622523] Goodix-TS 4-005d: i2c test failed attempt 2: -70
[ 6.637156] L1 PageTable Invalid
[ 6.640780] 0xaff02000 is not mapped!
[ 6.644890] DE invalid address: 0xaff02000, data:0x0, id:0x1
[ 6.653089] Goodix-TS 4-005d: I2C communication failure: -70
[ 6.653823] L1 PageTable Invalid
[ 6.653825] 0xaff02000 is not mapped!
[ 6.653828] DE invalid address: 0xaff02000, data:0x0, id:0x1
[ 6.670491] L1 PageTable Invalid
[ 6.670494] 0xaff02000 is not mapped!
[ 6.670497] DE invalid address: 0xaff02000, data:0x0, id:0x1
[ 6.687157] L1 PageTable Invalid
[ 6.687160] 0xaff02000 is not mapped!
[ 6.687162] DE invalid address: 0xaff02000, data:0x0, id:0x1
[ 6.701921] Goodix-TS: probe of 4-005d failed with error -70
[ 6.703824] L1 PageTable Invalid
[ 6.703827] 0xaff02000 is not mapped!
[ 6.703829] DE invalid address: 0xaff02000, data:0x0, id:0x1
[ 6.720490] L1 PageTable Invalid
[ 6.720492] 0xaff02000 is not mapped!
[ 6.720495] DE invalid address: 0xaff02000, data:0x0, id:0x1
[ 6.736603] /drivers/input/touchscreen
[ 6.737156] L1 PageTable Invalid
[ 6.737159] 0xaff02000 is not mapped!
[ 6.737161] DE invalid address: 0xaff02000, data:0x0, id:0x1
[ 6.753824] L1 PageTable Invalid
[ 6.753826] 0xaff02000 is not mapped!
[ 6.753829] DE invalid address: 0xaff02000, data:0x0, id:0x1
[ 6.757048] usb 2-1: New USB device found, idVendor=1a40, idProduct=0101
[ 6.757055] usb 2-1: New USB device strings: Mfr=0, Product=1, SerialNumber=0
[ 6.757060] usb 2-1: Product: USB 2.0 Hub
[ 6.757888] hub 2-1:1.0: USB hub found
[ 6.757920] usb 3-1: New USB device found, idVendor=1a86, idProduct=55d5
[ 6.757926] usb 3-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 6.757931] usb 3-1: Product: USB Quad_Serial
[ 6.757936] usb 3-1: Manufacturer: wch.cn
[ 6.757941] usb 3-1: SerialNumber: 0123456789
[ 6.758196] hub 2-1:1.0: 4 ports detected
[ 6.763002] usb_ch343 3-1:1.0: ttyCH343USB0: usb to uart device
[ 6.763848] usb_ch343 3-1:1.0: USB to GPIO device now attached to ch343_iodev70
[ 6.765052] usb_ch343 3-1:1.2: ttyCH343USB1: usb to uart device
[ 6.766286] usb_ch343 3-1:1.4: ttyCH343USB2: usb to uart device
[ 6.767525] usb_ch343 3-1:1.6: ttyCH343USB3: usb to uart device
[ 6.770491] L1 PageTable Invalid
[ 6.770494] 0xaff02000 is not mapped!
[ 6.770497] DE invalid address: 0xaff02000, data:0x0, id:0x1
[ 6.787156] L1 PageTable Invalid
[ 6.787159] 0xaff02000 is not mapped!
[ 6.787162] DE invalid address: 0xaff02000, data:0x0, id:0x1
[ 6.803823] L1 PageTable Invalid
[ 6.803826] 0xaff02000 is not mapped!
[ 6.803829] DE invalid address: 0xaff02000, data:0x0, id:0x1
[ 6.820491] L1 PageTable Invalid
[ 6.820494] 0xaff02000 is not mapped!
[ 6.820497] DE invalid address: 0xaff02000, data:0x0, id:0x1
[ 6.837157] L1 PageTable Invalid
[ 6.837160] 0xaff02000 is not mapped!
[ 6.837162] DE invalid address: 0xaff02000, data:0x0, id:0x1
[ 6.853824] L1 PageTable Invalid
[ 6.853826] 0xaff02000 is not mapped!
[ 6.853829] DE invalid address: 0xaff02000, data:0x0, id:0x1
[ 6.870490] L1 PageTable Invalid
[ 6.870493] 0xaff02000 is not mapped!
[ 6.870495] DE invalid address: 0xaff02000, data:0x0, id:0x1
[ 6.887157] L1 PageTable Invalid
请问这是什么地方的报错？应该怎么解决
