No touch input on Capacitive Touch Display with ixm6ull

Hello,

I have trouble to get the the touch input working with a iMX6ULL. I followed the instructions on First Steps with Capacitive Touch Display 7 Inch Parallel and took the fdt_fixup route.

root@colibri-imx6ull:~# dmesg
[    0.000000] Booting Linux on physical CPU 0x0
[    0.000000] Linux version 4.9.144-2.8.5+g5758a8e648a3 (oe-user@oe-host) (gcc version 7.3.0 (GCC) ) #1 SMP Thu Mar 21 16:19:09 UTC 2019
[    0.000000] CPU: ARMv7 Processor [410fc075] revision 5 (ARMv7), cr=10c5387d
[    0.000000] CPU: div instructions available: patching division code
[    0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
[    0.000000] OF: fdt:Machine model: Toradex Colibri iMX6ULL 512MB on Colibri Evaluation Board V3
[    0.000000] Reserved memory: created CMA memory pool at 0x98000000, size 128 MiB
[    0.000000] OF: reserved mem: initialized node linux,cma, compatible id shared-dma-pool
[    0.000000] Memory policy: Data cache writealloc
[    0.000000] On node 0 totalpages: 131072
[    0.000000] free_area_init_node: node 0, pgdat 80c5fc80, node_mem_map 97bb8000
[    0.000000]   Normal zone: 1024 pages used for memmap
[    0.000000]   Normal zone: 0 pages reserved
[    0.000000]   Normal zone: 131072 pages, LIFO batch:31
[    0.000000] percpu: Embedded 14 pages/cpu @97b8f000 s25804 r8192 d23348 u57344
[    0.000000] pcpu-alloc: s25804 r8192 d23348 u57344 alloc=14*4096
[    0.000000] pcpu-alloc: [0] 0
[    0.000000] Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 130048
[    0.000000] Kernel command line: user_debug=30 ubi.mtd=ubi root=ubi0:rootfs rw rootfstype=ubifs ubi.fm_autoconvert=1 console=tty1 console=ttymxc0,115200n8 consoleblank=0 video=mxsfb:800x480M-16@60,pixclockpol=1
[    0.000000] PID hash table entries: 2048 (order: 1, 8192 bytes)
[    0.000000] Dentry cache hash table entries: 65536 (order: 6, 262144 bytes)
[    0.000000] Inode-cache hash table entries: 32768 (order: 5, 131072 bytes)
[    0.000000] Memory: 376152K/524288K available (7168K kernel code, 386K rwdata, 2208K rodata, 1024K init, 376K bss, 17064K reserved, 131072K cma-reserved)
[    0.000000] Virtual kernel memory layout:
[    0.000000]     vector  : 0xffff0000 - 0xffff1000   (   4 kB)
[    0.000000]     fixmap  : 0xffc00000 - 0xfff00000   (3072 kB)
[    0.000000]     vmalloc : 0xa0800000 - 0xff800000   (1520 MB)
[    0.000000]     lowmem  : 0x80000000 - 0xa0000000   ( 512 MB)
[    0.000000]     modules : 0x7f000000 - 0x80000000   (  16 MB)
[    0.000000]       .text : 0x80008000 - 0x80800000   (8160 kB)
[    0.000000]       .init : 0x80b00000 - 0x80c00000   (1024 kB)
[    0.000000]       .data : 0x80c00000 - 0x80c60820   ( 387 kB)
[    0.000000]        .bss : 0x80c62000 - 0x80cc0188   ( 377 kB)
[    0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
[    0.000000] Hierarchical RCU implementation.
[    0.000000]  Build-time adjustment of leaf fanout to 32.
[    0.000000]  RCU restricting CPUs from NR_CPUS=4 to nr_cpu_ids=1.
[    0.000000] RCU: Adjusting geometry for rcu_fanout_leaf=32, nr_cpu_ids=1
[    0.000000] NR_IRQS:16 nr_irqs:16 16
[    0.000000] Switching to timer-based delay loop, resolution 333ns
[    0.000018] sched_clock: 32 bits at 3000kHz, resolution 333ns, wraps every 715827882841ns
[    0.000057] clocksource: mxc_timer1: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 637086815595 ns
[    0.003570] Console: colour dummy device 80x30
[    0.004865] console [tty1] enabled
[    0.004935] Calibrating delay loop (skipped), value calculated using timer frequency.. 6.00 BogoMIPS (lpj=30000)
[    0.005042] pid_max: default: 32768 minimum: 301
[    0.005289] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
[    0.005362] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)
[    0.006859] CPU: Testing write buffer coherency: ok
[    0.007546] Setting up static identity map for 0x80100000 - 0x80100058
[    0.010712] Brought up 1 CPUs
[    0.010795] SMP: Total of 1 processors activated (6.00 BogoMIPS).
[    0.010853] CPU: All CPU(s) started in SVC mode.
[    0.012473] devtmpfs: initialized
[    0.036943] VFP support v0.3: implementor 41 architecture 2 part 30 variant 7 rev 5
[    0.037752] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[    0.037889] futex hash table entries: 256 (order: 2, 16384 bytes)
[    0.047922] pinctrl core: initialized pinctrl subsystem
[    0.050304] NET: Registered protocol family 16
[    0.063763] DMA: preallocated 256 KiB pool for atomic coherent allocations
[    0.066828] cpuidle: using governor menu
[    0.109500] hw-breakpoint: found 5 (+1 reserved) breakpoint and 4 watchpoint registers.
[    0.109616] hw-breakpoint: maximum watchpoint size is 8 bytes.
[    0.112279] imx6ul-pinctrl 20e0000.iomuxc: initialized IMX pinctrl driver
[    0.113157] imx6ul-pinctrl 2290000.iomuxc-snvs: initialized IMX pinctrl driver
[    0.170532] mxs-dma 1804000.dma-apbh: initialized
[    0.173672] soc_in: supplied by +V3.3
[    0.176756] VCC_USB[1-4]: supplied by 5V
[    0.179598] SCSI subsystem initialized
[    0.180324] usbcore: registered new interface driver usbfs
[    0.180547] usbcore: registered new interface driver hub
[    0.180853] usbcore: registered new device driver usb
[    0.183727] i2c i2c-0: IMX I2C adapter registered
[    0.183824] i2c i2c-0: can't use DMA, using PIO instead.
[    0.185298] i2c i2c-1: IMX I2C adapter registered
[    0.185390] i2c i2c-1: can't use DMA, using PIO instead.
[    0.185847] Linux video capture interface: v2.00
[    0.186019] pps_core: LinuxPPS API ver. 1 registered
[    0.186079] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@linux.it>
[    0.186210] PTP clock support registered
[    0.187010] Advanced Linux Sound Architecture Driver Initialized.
[    0.189899] clocksource: Switched to clocksource mxc_timer1
[    0.190208] VFS: Disk quotas dquot_6.6.0
[    0.190388] VFS: Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
[    0.215915] NET: Registered protocol family 2
[    0.217381] TCP established hash table entries: 4096 (order: 2, 16384 bytes)
[    0.217563] TCP bind hash table entries: 4096 (order: 3, 32768 bytes)
[    0.217768] TCP: Hash tables configured (established 4096 bind 4096)
[    0.217937] UDP hash table entries: 256 (order: 1, 8192 bytes)
[    0.218038] UDP-Lite hash table entries: 256 (order: 1, 8192 bytes)
[    0.218410] NET: Registered protocol family 1
[    0.219423] RPC: Registered named UNIX socket transport module.
[    0.219505] RPC: Registered udp transport module.
[    0.219561] RPC: Registered tcp transport module.
[    0.219616] RPC: Registered tcp NFSv4.1 backchannel transport module.
[    0.224870] Bus freq driver module loaded
[    0.228672] workingset: timestamp_bits=30 max_order=17 bucket_order=0
[    0.246970] NFS: Registering the id_resolver key type
[    0.247098] Key type id_resolver registered
[    0.247158] Key type id_legacy registered
[    0.247229] nfs4filelayout_init: NFSv4 File Layout Driver Registering...
[    0.248775] ntfs: driver 2.1.32 [Flags: R/W].
[    0.249689] fuse init (API version 7.26)
[    0.267457] io scheduler noop registered
[    0.267540] io scheduler deadline registered
[    0.268012] io scheduler cfq registered (default)
[    0.271088] backlight supply power not found, using dummy regulator
[    0.274873] 21c8000.lcdif supply lcd not found, using dummy regulator
[    0.275415] fbcvt: 800x480@60: CVT Name - .384M9
[    0.389044] Console: switching to colour frame buffer device 100x30
[    0.408644] mxsfb 21c8000.lcdif: initialized
[    0.415093] imx-sdma 20ec000.sdma: loaded firmware 3.3
[    0.428562] 2020000.serial: ttymxc0 at MMIO 0x2020000 (irq = 20, base_baud = 5000000) is a IMX
[    1.070930] console [ttymxc0] enabled
[    1.080487] 21e8000.serial: ttymxc1 at MMIO 0x21e8000 (irq = 61, base_baud = 5000000) is a IMX
[    1.094596] 21f4000.serial: ttymxc4 at MMIO 0x21f4000 (irq = 62, base_baud = 5000000) is a IMX
[    1.127155] loop: module loaded
[    1.143864] random: fast init done
[    1.154709] nand: device found, Manufacturer ID: 0xc2, Chip ID: 0xdc
[    1.165131] nand: Macronix MX30LF4G28AC
[    1.172897] nand: 512 MiB, SLC, erase size: 128 KiB, page size: 2048, OOB size: 112
[    1.185355] gpmi-nand 1806000.gpmi-nand: mode:5 ,failed in set feature.
[    1.196549] Bad block table found at page 262080, version 0x01
[    1.207147] Bad block table found at page 262016, version 0x01
[    1.217625] nand_read_bbt: bad block at 0x000013c60000
[    1.227371] 5 ofpart partitions found on MTD device gpmi-nand
[    1.237171] Creating 5 MTD partitions on "gpmi-nand":
[    1.246282] 0x000000000000-0x000000080000 : "mx6ull-bcb"
[    1.256848] 0x000000080000-0x000000200000 : "u-boot1"
[    1.267065] 0x000000200000-0x000000380000 : "u-boot2"
[    1.277146] 0x000000380000-0x000000400000 : "u-boot-env"
[    1.287431] 0x000000400000-0x000020000000 : "ubi"
[    1.308995] gpmi-nand 1806000.gpmi-nand: driver registered.
[    1.323100] spi_imx 2008000.ecspi: probed
[    1.332690] libphy: Fixed MDIO Bus: probed
[    1.343223] 20b4000.ethernet supply phy not found, using dummy regulator
[    1.355067] pps pps0: new PPS source ptp0
[    1.365451] libphy: fec_enet_mii_bus: probed
[    1.376427] fec 20b4000.ethernet eth0: registered PHC device 0
[    1.388110] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[    1.398439] ehci-mxc: Freescale On-Chip EHCI Host driver
[    1.407822] usbcore: registered new interface driver usb-storage
[    1.417973] usbcore: registered new interface driver usbserial
[    1.427593] usbcore: registered new interface driver usbserial_generic
[    1.437768] usbserial: USB Serial support registered for generic
[    1.447316] usbcore: registered new interface driver ftdi_sio
[    1.456504] usbserial: USB Serial support registered for FTDI USB Serial Device
[    1.467411] usbcore: registered new interface driver pl2303
[    1.476589] usbserial: USB Serial support registered for pl2303
[    1.488347] 2184800.usbmisc supply vbus-wakeup not found, using dummy regulator
[    1.506090] ci_hdrc ci_hdrc.0: EHCI Host Controller
[    1.514816] ci_hdrc ci_hdrc.0: new USB bus registered, assigned bus number 1
[    1.549980] ci_hdrc ci_hdrc.0: USB 2.0 started, EHCI 1.00
[    1.561355] hub 1-0:1.0: USB hub found
[    1.568922] hub 1-0:1.0: 1 port detected
[    1.579472] mousedev: PS/2 mouse device common for all mice
[    1.596087] input: AD7879 Touchscreen as /devices/soc0/soc/2100000.aips-bus/21a4000.i2c/i2c-1/1-002c/input/input0
[    1.619723] rtc-ds1307 0-0068: oscillator failed, set time!
[    1.633442] rtc-ds1307 0-0068: rtc core: registered m41t0 as rtc0
[    1.645386] snvs_rtc 20cc000.snvs:snvs-rtc-lp: rtc core: registered 20cc000.snvs:snvs-r as rtc1
[    1.658739] i2c /dev entries driver
[    1.671628] imx2-wdt 20bc000.wdog: timeout 60 sec (nowayout=0)
[    1.683915] sdhci: Secure Digital Host Controller Interface driver
[    1.694464] sdhci: Copyright(c) Pierre Ossman
[    1.703015] sdhci-pltfm: SDHCI platform and OF driver helper
[    1.714930] sdhci-esdhc-imx 2190000.usdhc: Got CD GPIO
[    1.790417] mmc0: SDHCI controller on 2190000.usdhc [2190000.usdhc] using ADMA
[    1.869964] mmc1: SDHCI controller on 2194000.usdhc [2194000.usdhc] using ADMA
[    1.898120] hidraw: raw HID events driver (C) Jiri Kosina
[    1.908781] usbcore: registered new interface driver usbhid
[    1.918817] usbhid: USB HID core driver
[    1.934884] Netfilter messages via NETLINK v0.30.
[    1.944248] nfnl_acct: registering with nfnetlink.
[    1.954047] nf_conntrack version 0.5.0 (8192 buckets, 32768 max)
[    1.965272] nf_tables: (c) 2007-2009 Patrick McHardy <kaber@trash.net>
[    1.976933] ip_tables: (C) 2000-2006 Netfilter Core Team
[    1.988398] NET: Registered protocol family 10
[    2.000409] ip6_tables: (C) 2000-2006 Netfilter Core Team
[    2.010356] NET: Registered protocol family 17
[    2.019247] Bridge firewalling registered
[    2.027622] 8021q: 802.1Q VLAN Support v1.8
[    2.035992] Key type dns_resolver registered
[    2.048830] cpu cpu0: Registered imx6q-cpufreq
[    2.070271] mmc1: new high speed SDIO card at address 0001
[    2.080169] Registering SWP/SWPB emulation handler
[    2.087788] registered taskstats version 1
[    2.725278] imx_thermal 2000000.aips-bus:tempmon: Industrial CPU temperature grade - max:105C critical:115C passive:95C
[    2.752478] ubi0: default fastmap pool size: 200
[    2.759025] ubi0: default fastmap WL pool size: 100
[    2.765836] ubi0: attaching mtd4
[    3.099276] ubi0: attached by fastmap
[    3.105834] ubi0: fastmap pool size: 200
[    3.112434] ubi0: fastmap WL pool size: 100
[    3.143205] ubi0: attached mtd4 (name "ubi", size 508 MiB)
[    3.150581] ubi0: PEB size: 131072 bytes (128 KiB), LEB size: 126976 bytes
[    3.159234] ubi0: min./max. I/O unit sizes: 2048/2048, sub-page size 2048
[    3.167870] ubi0: VID header offset: 2048 (aligned 2048), data offset: 4096
[    3.176666] ubi0: good PEBs: 4059, bad PEBs: 5, corrupted PEBs: 0
[    3.184568] ubi0: user volume: 4, internal volumes: 1, max. volumes count: 128
[    3.193689] ubi0: max/mean erase counter: 25/12, WL threshold: 4096, image sequence number: 828330452
[    3.206634] ubi0: available PEBs: 0, total reserved PEBs: 4059, PEBs reserved for bad PEB handling: 75
[    3.220039] ubi0: background thread "ubi_bgt0d" started, PID 104
[    3.232267] input: gpio-keys as /devices/soc0/gpio-keys/input/input1
[    3.247116] rtc-ds1307 0-0068: hctosys: unable to read the hardware clock
[    3.257912] soc_in: disabling
[    3.264347] ALSA device list:
[    3.269476]   No soundcards found.
[    3.279181] UBIFS (ubi0:3): background thread "ubifs_bgt0_3" started, PID 105
[    3.453114] UBIFS (ubi0:3): UBIFS: mounted UBI device 0, volume 3, name "rootfs"
[    3.464866] UBIFS (ubi0:3): LEB size: 126976 bytes (124 KiB), min./max. I/O unit sizes: 2048 bytes/2048 bytes
[    3.483234] UBIFS (ubi0:3): FS size: 493936640 bytes (471 MiB, 3890 LEBs), journal size 9023488 bytes (8 MiB, 72 LEBs)
[    3.503154] UBIFS (ubi0:3): reserved for root: 0 bytes (0 KiB)
[    3.513849] UBIFS (ubi0:3): media format: w4/r0 (latest is w4/r0), UUID 07C6869B-7EF1-4DF4-8550-37E5D52EB381, small LPT model
[    3.540157] VFS: Mounted root (ubifs filesystem) on device 0:12.
[    3.552479] devtmpfs: mounted
[    3.559409] Freeing unused kernel memory: 1024K
[    4.463383] random: crng init done
[    4.569830] systemd[1]: System time before build time, advancing clock.
[    4.826287] systemd[1]: systemd 234 running in system mode. (+PAM -AUDIT -SELINUX +IMA -APPARMOR +SMACK +SYSVINIT +UTMP -LIBCRYPTSETUP -GCRYPT -GNUTLS -ACL +XZ +LZ4 -SECCOMP +BLKID -ELFUTILS +KMOD -IDN2 +IDN default-hierarchy=hybrid)
[    4.880952] systemd[1]: Detected architecture arm.
[    4.944994] systemd[1]: Set hostname to <colibri-imx6ull>.
[    6.895158] systemd[1]: Started Dispatch Password Requests to Console Directory Watch.
[    6.940908] systemd[1]: Started Forward Password Requests to Wall Directory Watch.
[    7.096688] systemd[1]: Listening on udev Kernel Socket.
[    7.140427] systemd[1]: Reached target Host and Network Name Lookups.
[    7.189449] systemd[1]: Created slice User and Session Slice.
[    7.231012] systemd[1]: Listening on Journal Socket.
[    7.271235] systemd[1]: Listening on Network Service Netlink Socket.
[    8.724606] systemd-journald[116]: Received request to flush runtime journal from PID 1
[    8.809206] systemd-journald[116]: File /var/log/journal/8d87330cf48b4212839762b590cbd44a/system.journal corrupted or uncleanly shut down, renaming and replacing.
[   18.823023] CAN device driver interface
[   18.958610] mcp251x spi0.0: Cannot initialize MCP2515. Wrong wiring?
[   19.026831] mcp251x spi0.0: Probe failed, err=19
[   19.466872] imx6ul-pinctrl 20e0000.iomuxc: pin MX6UL_PAD_UART4_TX_DATA already requested by 21a0000.i2c; cannot claim for 0-004a
[   19.483204] imx6ul-pinctrl 20e0000.iomuxc: pin-45 (0-004a) status -22
[   19.492067] imx6ul-pinctrl 20e0000.iomuxc: could not request pin 45 (MX6UL_PAD_UART4_TX_DATA) from group i2c1grp  on device 20e0000.iomuxc
[   19.509295] atmel_mxt_ts 0-004a: Error applying setting, reverse things back
[   19.589513] compat: loading out-of-tree module taints kernel.
[   19.604728] Loading modules backported from Linux version v4.18-0-g94710cac0ef4
[   19.614635] Backport generated by backports.git v4.14-rc2-1-80-g0795d050
[   19.961150] atmel_mxt_ts: probe of 0-004a failed with error -22
[   20.377936] cfg80211: Loading compiled-in X.509 certificates for regulatory database
[   20.430195] cfg80211: Loaded X.509 cert 'sforshee: 00b28ddf47aef9cea7'
[   20.477561] platform regulatory.0: Falling back to user helper
[   21.708840] cfg80211: failed to load regulatory.db
[   21.971884] Bluetooth: Core ver 2.22
[   21.978306] NET: Registered protocol family 31
[   21.985284] Bluetooth: HCI device and connection manager initialized
[   21.997656] Bluetooth: HCI socket layer initialized
[   22.005968] Bluetooth: L2CAP socket layer initialized
[   22.014686] Bluetooth: SCO socket layer initialized
[   22.214627] Bluetooth: vendor=0x2df, device=0x9136, class=255, fn=2
[   23.568428] using random self ethernet address
[   23.575333] using random host ethernet address
[   24.455527] Bluetooth: FW download over, size 695532 bytes
[   24.697235] usb0: HOST MAC 00:14:2d:ff:ff:fe
[   24.707739] usb0: MAC 00:14:2d:ff:ff:ff
[   25.029149] configfs-gadget gadget: high-speed config #1: c
[   25.080351] sdio platform data not available
[   25.085621] mwifiex_sdio mmc1:0001:1: WLAN FW already running! Skip FW dnld
[   25.093705] mwifiex_sdio mmc1:0001:1: WLAN FW is active
[   25.158460] mwifiex_sdio mmc1:0001:1: CMD_RESP: cmd 0x242 error, result=0x2
[   25.165732] mwifiex_sdio mmc1:0001:1: mwifiex_process_cmdresp: cmd 0x242 failed during       initialization
[   25.243993] mwifiex_sdio mmc1:0001:1: info: MWIFIEX VERSION: mwifiex 1.0 (15.68.7.p71)
[   25.252164] mwifiex_sdio mmc1:0001:1: driver_version = mwifiex 1.0 (15.68.7.p71)
[   25.743330] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[   25.748671] Bluetooth: BNEP filters: protocol multicast
[   25.829361] Bluetooth: BNEP socket layer initialized
[   27.187904] Bluetooth: RFCOMM TTY layer initialized
[   27.212833] Bluetooth: RFCOMM socket layer initialized
[   27.266169] Bluetooth: RFCOMM ver 1.11
[   27.780181] Micrel KSZ8041 20b4000.ethernet-1:02: attached PHY driver [Micrel KSZ8041] (mii_bus:phy_addr=20b4000.ethernet-1:02, irq=-1)
[   27.855914] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready

The fdtfile in uboot is imx6ull-colibri-wifi-eval-v3.dtb. Needs something else to be changed?

Hi Simon and welcome to Toradex community!

Just to make sure: There are two cables you have to connect, the broader one for parallel RGB display and the 10pin one to connect I2C for touch.
On Iris V1.1B we do not have such a connector to directly connect the touch interface from the display with that carrier board. Did you use the Capacitive Touch Adapter to connect the display touch-interface to I2C pins on X16 header?

I strongly suggest you to not use fdt_fixup. You better adapt your devicetree according to this patch (that is also in the developer website you linked)

--- a/arch/arm/boot/dts/imx6ull-colibri-eval-v3.dtsi
+++ b/arch/arm/boot/dts/imx6ull-colibri-eval-v3.dtsi
@@ -121,10 +121,12 @@
/* Atmel maxtouch controller */
atmel_mxt_ts: atmel_mxt_ts@4a {
compatible = "atmel,maxtouch";
+               pinctrl-names = "default";
+               pinctrl-0 = <&pinctrl_gpiotouch>;
reg = <0x4a>;
-               interrupt-parent = <&gpio5>;
-               interrupts = <4 IRQ_TYPE_EDGE_FALLING>;
-               status = "disabled";
+               interrupt-parent = <&gpio4>;
+               interrupts = <16 IRQ_TYPE_EDGE_FALLING>;
+               status = "okay";
};
touch: touchrevf0710a@10 {
@@ -283,12 +274,12 @@
/* PWM <b> */
&pwm5 {
-       status = "okay";
+       status = "disabled";
};
/* PWM  */
&pwm6 {
-       status = "okay";
+       status = "disabled";
};
/* PWM  */
@@ -349,7 +340,7 @@
pinctrl_gpiotouch: touchgpios {
fsl,pins = <
MX6UL_PAD_NAND_DQS__GPIO4_IO16          0x74
-                               MX6UL_PAD_ENET1_TX_EN__GPIO2_IO05       0x14
+                               MX6UL_PAD_ENET1_TX_EN__GPIO2_IO05       0x74
>;
};
};

Check out also this link: Device Tree Customization | Toradex Developer Center

Thank you. The display was correctly connected via adapter. Patching the devicetree did the trick.

Perfect that it works. Thanks for the feedback.