AM3354: display screen only showed "please wait...."

Hello Shine,

Could you please share which PSDK they are migrating from and the Kernel boot log in a text file? Also, please confirm if the customer has configured the settings mentioned in the following page.

Regards,
Krunal

Hi Krunal,

Thanks for your reply.

Customer wanted to migrate ti-processor-sdk-linux-am335x-evm-06.03.00.106 to his own board. 

He has checked the configuration the page you mentioned. His LCD is  multiple of 32 bit, the page mentioned non  multiple of 32bit LCD. 

Below is the kernel log:

Starting kernel ...

[ 0.000000] Booting Linux on physical CPU 0x0
[ 0.000000] Linux version 4.19.94-gbe5389fd85 (oe-user@oe-host) (gcc version 8.3.0 (GNU Toolchain for the A-profile Architecture 8.3-2019.03 (arm-rel-8.36))) #1 PREEMPT Sun Apr 19 03:43:09 UTC 2020
[ 0.000000] CPU: ARMv7 Processor [413fc082] revision 2 (ARMv7), cr=10c5387d
[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
[ 0.000000] OF: fdt: Machine model: TI AM335x EVM-SK
[ 0.000000] Memory policy: Data cache writeback
[ 0.000000] efi: Getting EFI parameters from FDT:
[ 0.000000] efi: UEFI not found.
[ 0.000000] cma: Reserved 48 MiB at 0x9d000000
[ 0.000000] CPU: All CPU(s) started in SVC mode.
[ 0.000000] AM335X ES2.1 (sgx neon)
[ 0.000000] random: get_random_bytes called from start_kernel+0xa4/0x434 with crng_init=0
[ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 129920
[ 0.000000] Kernel command line: console=ttyO0,115200n8 root=PARTUUID=b511c40f-02 rw rootfstype=ext4 rootwait
[ 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: 455924K/524288K available (9216K kernel code, 307K rwdata, 2720K rodata, 1024K init, 252K bss, 19212K reserved, 49152K cma-reserved, 0K highmem)
[ 0.000000] Virtual kernel memory layout:
[ 0.000000] vector : 0xffff0000 - 0xffff1000 ( 4 kB)
[ 0.000000] fixmap : 0xffc00000 - 0xfff00000 (3072 kB)
[ 0.000000] vmalloc : 0xe0800000 - 0xff800000 ( 496 MB)
[ 0.000000] lowmem : 0xc0000000 - 0xe0000000 ( 512 MB)
[ 0.000000] pkmap : 0xbfe00000 - 0xc0000000 ( 2 MB)
[ 0.000000] modules : 0xbf000000 - 0xbfe00000 ( 14 MB)
[ 0.000000] .text : 0x(ptrval) - 0x(ptrval) (10208 kB)
[ 0.000000] .init : 0x(ptrval) - 0x(ptrval) (1024 kB)
[ 0.000000] .data : 0x(ptrval) - 0x(ptrval) ( 308 kB)
[ 0.000000] .bss : 0x(ptrval) - 0x(ptrval) ( 253 kB)
[ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
[ 0.000000] rcu: Preemptible hierarchical RCU implementation.
[ 0.000000] Tasks RCU enabled.
[ 0.000000] NR_IRQS: 16, nr_irqs: 16, preallocated irqs: 16
[ 0.000000] IRQ: Found an INTC at 0x(ptrval) (revision 5.0) with 128 interrupts
[ 0.000000] OMAP clockevent source: timer2 at 24000000 Hz
[ 0.000021] sched_clock: 32 bits at 24MHz, resolution 41ns, wraps every 89478484971ns
[ 0.000049] clocksource: timer1: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 79635851949 ns
[ 0.000064] OMAP clocksource: timer1 at 24000000 Hz
[ 0.000327] timer_probe: no matching timers found
[ 0.000560] Console: colour dummy device 80x30
[ 0.000595] WARNING: Your 'console=ttyO0' has been replaced by 'ttyS0'
[ 0.000605] This ensures that you still see kernel messages. Please
[ 0.000613] update your kernel commandline.
[ 0.000677] Calibrating delay loop... 597.60 BogoMIPS (lpj=2988032)
[ 0.118713] pid_max: default: 32768 minimum: 301
[ 0.118985] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.119006] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.120053] CPU: Testing write buffer coherency: ok
[ 0.120132] CPU0: Spectre v2: using BPIALL workaround
[ 0.121244] Setting up static identity map for 0x80100000 - 0x80100060
[ 0.121444] rcu: Hierarchical SRCU implementation.
[ 0.121913] EFI services will not be available.
[ 0.123850] devtmpfs: initialized
[ 0.136955] VFP support v0.3: implementor 41 architecture 3 part 30 variant c rev 3
[ 0.137462] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[ 0.137493] futex hash table entries: 256 (order: -1, 3072 bytes)
[ 0.142132] pinctrl core: initialized pinctrl subsystem
[ 0.143082] DMI not present or invalid.
[ 0.143626] NET: Registered protocol family 16
[ 0.146799] DMA: preallocated 256 KiB pool for atomic coherent allocations
[ 0.177315] l4_wkup_cm:clk:0010:0: failed to disable
[ 0.232443] cpuidle: using governor ladder
[ 0.232494] cpuidle: using governor menu
[ 0.239549] OMAP GPIO hardware version 0.1
[ 0.252650] No ATAGs?
[ 0.252665] hw-breakpoint: debug architecture 0x4 unsupported.
[ 0.272720] edma 49000000.edma: TI EDMA DMA engine driver
[ 0.277987] SCSI subsystem initialized
[ 0.278623] media: Linux media interface: v0.10
[ 0.278959] videodev: Linux video capture interface: v2.00
[ 0.279118] pps_core: LinuxPPS API ver. 1 registered
[ 0.279131] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@linux.it>
[ 0.279165] PTP clock support registered
[ 0.279213] EDAC MC: Ver: 3.0.0
[ 0.280576] omap-mailbox 480c8000.mailbox: omap mailbox rev 0x400
[ 0.281359] Advanced Linux Sound Architecture Driver Initialized.
[ 0.282895] clocksource: Switched to clocksource timer1
[ 0.294686] NET: Registered protocol family 2
[ 0.295752] tcp_listen_portaddr_hash hash table entries: 512 (order: 0, 4096 bytes)
[ 0.295797] TCP established hash table entries: 4096 (order: 2, 16384 bytes)
[ 0.295863] TCP bind hash table entries: 4096 (order: 2, 16384 bytes)
[ 0.295926] TCP: Hash tables configured (established 4096 bind 4096)
[ 0.296060] UDP hash table entries: 256 (order: 0, 4096 bytes)
[ 0.296090] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
[ 0.296298] NET: Registered protocol family 1
[ 0.297039] RPC: Registered named UNIX socket transport module.
[ 0.297058] RPC: Registered udp transport module.
[ 0.297068] RPC: Registered tcp transport module.
[ 0.297077] RPC: Registered tcp NFSv4.1 backchannel transport module.
[ 0.298276] hw perfevents: enabled with armv7_cortex_a8 PMU driver, 5 counters available
[ 0.300018] Initialise system trusted keyrings
[ 0.300415] workingset: timestamp_bits=14 max_order=17 bucket_order=3
[ 0.307363] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[ 0.308352] NFS: Registering the id_resolver key type
[ 0.308406] Key type id_resolver registered
[ 0.308418] Key type id_legacy registered
[ 0.308478] ntfs: driver 2.1.32 [Flags: R/O].
[ 0.311528] Key type asymmetric registered
[ 0.311552] Asymmetric key parser 'x509' registered
[ 0.311645] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 245)
[ 0.311662] io scheduler noop registered
[ 0.311673] io scheduler deadline registered
[ 0.311999] io scheduler cfq registered (default)
[ 0.312015] io scheduler mq-deadline registered
[ 0.312026] io scheduler kyber registered
[ 0.314832] pinctrl-single 44e10800.pinmux: 142 pins, size 568
[ 0.319599] pwm-backlight backlight: backlight supply power not found, using dummy regulator
[ 0.319735] pwm-backlight backlight: Linked as a consumer to regulator.0
[ 0.389537] Serial: 8250/16550 driver, 10 ports, IRQ sharing enabled
[ 0.394917] 44e09000.serial: ttyS0 at MMIO 0x44e09000 (irq = 30, base_baud = 3000000) is a 8250
[ 1.028441] console [ttyS0] enabled
[ 1.034687] omap_rng 48310000.rng: Random Number Generator ver. 20
[ 1.043092] random: fast init done
[ 1.046810] random: crng init done
[ 1.051385] OF: graph: no port node found in /ocp/lcdc@4830e000
[ 1.057741] OF: graph: no port node found in /ocp/lcdc@4830e000
[ 1.064354] OF: graph: no port node found in /ocp/lcdc@4830e000
[ 1.070319] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[ 1.077019] [drm] No driver support for vblank timestamp query.
[ 1.090074] Console: switching to colour frame buffer device 100x30
[ 1.100523] tilcdc 4830e000.lcdc: fb0: DRM emulated frame buffer device
[ 1.107917] [drm] Initialized tilcdc 1.0.0 20121205 for 4830e000.lcdc on minor 0
[ 1.131204] brd: module loaded
[ 1.143709] loop: module loaded
[ 1.150561] libphy: Fixed MDIO Bus: probed
[ 1.222998] davinci_mdio 4a101000.mdio: davinci mdio revision 1.6, bus freq 1000000
[ 1.230709] davinci_mdio 4a101000.mdio: detected phy mask fffffffe
[ 1.238291] libphy: 4a101000.mdio: probed
[ 1.242348] davinci_mdio 4a101000.mdio: phy[0]: device 4a101000.mdio:00, driver Micrel KSZ9031 Gigabit PHY
[ 1.253488] cpsw 4a100000.ethernet: No slave[1] phy_id, phy-handle, or fixed-link property
[ 1.261811] cpsw 4a100000.ethernet: Detected MACID = 0c:b2:b7:a1:ed:65
[ 1.268675] cpsw 4a100000.ethernet: initialized cpsw ale version 1.4
[ 1.275154] cpsw 4a100000.ethernet: ALE Table size 1024
[ 1.280451] cpsw 4a100000.ethernet: cpts: overflow check period 500 (jiffies)
[ 1.289580] i2c /dev entries driver
[ 1.296373] sdhci: Secure Digital Host Controller Interface driver
[ 1.302599] sdhci: Copyright(c) Pierre Ossman
[ 1.308002] omap_gpio 44e07000.gpio: Could not set line 6 debounce to 200000 microseconds (-22)
[ 1.316806] omap_hsmmc 48060000.mmc: Got CD GPIO
[ 1.323553] sdhci-pltfm: SDHCI platform and OF driver helper
[ 1.331347] ledtrig-cpu: registered to indicate activity on CPUs
[ 1.343300] NET: Registered protocol family 10
[ 1.349397] Segment Routing with IPv6
[ 1.353367] sit: IPv6, IPv4 and MPLS over IPv4 tunneling driver
[ 1.360250] NET: Registered protocol family 17
[ 1.365225] Key type dns_resolver registered
[ 1.369819] omap_voltage_late_init: Voltage driver support not added
[ 1.377458] Loading compiled-in X.509 certificates
[ 1.423174] tps65910 0-002d: No interrupt support, no core IRQ
[ 1.431469] vrtc: supplied by vbat
[ 1.438817] vio: supplied by vbat
[ 1.443788] vdd1: supplied by vbat
[ 1.449157] vdd2: supplied by vbat
[ 1.456159] vdig1: supplied by vbat
[ 1.461158] vdig2: supplied by vbat
[ 1.466181] vpll: supplied by vbat
[ 1.471091] vdac: supplied by vbat
[ 1.476039] vaux1: supplied by vbat
[ 1.481029] vaux2: supplied by vbat
[ 1.486041] vaux33: supplied by vbat
[ 1.491128] vmmc: supplied by vbat
[ 1.495991] vbb: supplied by vbat
[ 1.501341] omap_i2c 44e0b000.i2c: bus 0 rev0.11 at 400 kHz
[ 1.507455] cpu cpu0: Linked as a consumer to regulator.7
[ 1.513022] cpu cpu0: Dropping the link to regulator.7
[ 1.518434] cpu cpu0: Linked as a consumer to regulator.7
[ 1.525824] omap_gpio 44e07000.gpio: Could not set line 6 debounce to 200000 microseconds (-22)
[ 1.534745] omap_hsmmc 48060000.mmc: Got CD GPIO
[ 1.540093] omap_hsmmc 48060000.mmc: Linked as a consumer to regulator.17
[ 1.576272] omap_hsmmc 481d8000.mmc: Linked as a consumer to regulator.4
[ 1.615840] mmc0: host does not support reading read-only switch, assuming write-enable
[ 1.625950] mmc0: new high speed SDXC card at address 0001
[ 1.633701] mmcblk0: mmc0:0001 SD16G 58.4 GiB
[ 1.641365] mmcblk0: p1 p2
[ 1.701906] input: gpio_buttons@0 as /devices/platform/gpio_buttons@0/input/input0
[ 1.711034] hctosys: unable to open rtc device (rtc0)
[ 1.717218] ALSA device list:
[ 1.720307] No soundcards found.
[ 2.990480] EXT4-fs (mmcblk0p2): recovery complete
[ 3.000327] EXT4-fs (mmcblk0p2): mounted filesystem with ordered data mode. Opts: (null)
[ 3.009189] VFS: Mounted root (ext4 filesystem) on device 179:2.
[ 3.024580] devtmpfs: mounted
[ 3.029593] Freeing unused kernel memory: 1024K
[ 3.034931] Run /sbin/init as init process
[ 3.442443] systemd[1]: System time before build time, advancing clock.
[ 3.499266] systemd[1]: systemd 239 running in system mode. (+PAM -AUDIT -SELINUX +IMA -APPARMOR +SMACK +SYSVINIT +UTMP -LIBCRYPTSETUP -GCRYPT -GNUTLS +ACL +XZ -LZ4 -SECCOMP +BLKID -ELFUTILS +KMOD -IDN2 -IDN -PCRE2 default-hierarchy=hybrid)
[ 3.521710] systemd[1]: Detected architecture arm.


Thanks.
Rgds
Shine

Hi Shine,

His LCD is  multiple of 32 bit, the page mentioned non  multiple of 32bit LCD. 

AM335x LCD controller only supports up to 24-bit data output and I am wondering if you could please share more information about your customer's setup. Also, please share the output of the command "lsmod".

Regards,
Krunal

Hi Krunal,

Thanks for your reply.

Customer only used 0~15 for RGB output. below is the configuration and lsmod log.

panel {

compatible = "ti,tilcdc,panel";
pinctrl-names = "default", "sleep";
pinctrl-0 = <&lcd_pins_default>;
pinctrl-1 = <&lcd_pins_sleep>;
status = "okay";
panel-info {
ac-bias = <255>;
ac-bias-intrpt = <0>;
dma-burst-sz = <16>;
bpp = <32>;
fdd = <0x80>;
sync-edge = <0>;
sync-ctrl = <1>;
raster-order = <0>;
fifo-th = <0>;
};
display-timings {
800x480 {
hactive = <800>;
vactive = <480>;
hback-porch = <88>;
hfront-porch = <40>;
hsync-len = <128>;
vback-porch = <32>;
vfront-porch = <11>;
vsync-len = <2>;
clock-frequency = <33200000>;
hsync-active = <0>;
vsync-active = <0>;
};
};

root@am335x-evm:~# lsmod
Module Size Used by
usb_f_acm 16384 1
u_serial 20480 3 usb_f_acm
usb_f_ecm 16384 1
g_multi 16384 0
usb_f_mass_storage 45056 2 g_multi
usb_f_rndis 28672 2 g_multi
u_ether 20480 3 usb_f_ecm,g_multi,usb_f_rndis
libcomposite 53248 5 usb_f_ecm,usb_f_acm,usb_f_mass_storage,g_multi,usb_f_rndis
musb_dsps 20480 0
musb_hdrc 106496 1 musb_dsps
phy_am335x 16384 1
udc_core 28672 8 usb_f_ecm,usb_f_acm,usb_f_mass_storage,u_serial,musb_hdrc,u_ether,usb_f_rndis,libcomposite
phy_generic 16384 1 phy_am335x
phy_am335x_control 16384 1 phy_am335x
ti_am335x_tsc 16384 0
pvrsrvkm 401408 0
pm33xx 16384 0
wkup_m3_ipc 16384 1 pm33xx
wkup_m3_rproc 16384 1
remoteproc 49152 2 wkup_m3_rproc,wkup_m3_ipc
omap_aes_driver 24576 0
crypto_engine 16384 1 omap_aes_driver
omap_crypto 16384 1 omap_aes_driver
omap_sham 28672 0
ti_emif_sram 16384 1 pm33xx
musb_am335x 16384 0
rtc_omap 20480 2
omap_wdt 16384 0
ti_am335x_tscadc 16384 1 ti_am335x_tsc
sch_fq_codel 20480 3
uio_module_drv 16384 0
uio 20480 1 uio_module_drv
ftdi_sio 45056 0
usbserial 36864 1 ftdi_sio
usbcore 217088 3 ftdi_sio,musb_hdrc,usbserial
usb_common 16384 6 phy_am335x,udc_core,musb_hdrc,libcomposite,musb_dsps,usbcore
cryptodev 49152 0

Thanks.
Rgds
Shine

Hello Shine,

If the customer is using 16bit LCD, could you please try configuring the settings mentioned on the following page: http://software-dl.ti.com/processor-sdk-linux/esd/docs/latest/linux/Foundational_Components/Graphics/AM3_Beagle_Bone_Black_Configuration.html

Regards,
Krunal

Hi Krunal,

There is no /etc/powervr.ini file. So customer create the powervr.ini file as follows

root@am335x-evm:~# cat /etc/powervr.ini

[default]
WindowSystem=libpvrPVR2D_FRONTWSEGL.so.1
DefaultPixelFormat=RGB565

root@am335x-evm:~# cat /etc/weston.ini
[core]
require-input=false
gbm-format=rgb565

[shell]
locking=false
animation=zoom
panel-position=top
startup-animation=fade

[screensaver]
# Uncomment path to disable screensaver
#path=@libexecdir@/weston-screensaver

root@am335x-evm:~# cat /etc/profile.d/qt_env.sh
#!/bin/sh

### QT Environment Variables ###
export QT_QPA_EVDEV_TOUCHSCREEN_PARAMETERS="rotate=180"
export SSL_CERT_FILE=/etc/ssl/certs/ca-certificates.crt
export QT_QPA_EGLFS_KMS_CONFIG=/etc/qt5/eglfs_kms_cfg.json
export QT_QPA_EGLFS_INTEGRATION=none
export QT_QPA_EGLFS_ALWAYS_SET_MODE=1
export QT_WAYLAND_SHELL_INTEGRATION=wl-shell
root@am335x-evm:~#

But it still shows "please wait".

Thanks.
Rgds
Shine

Hello Shine,

Did you reboot the board after inputting the above settings? Also, please try running kmscube and kmstest and share the output. Lastly, please confirm that the customer is using 16bit LCD but the DTS entry is configured to bpp=32.

Regards,
Krunal

Hi Krunal，

The output is below

### Display [0]: CRTC = 29, Connector = 31, format = 0x34325258
Mode chosen [800x480] : Clock => 33200, Vertical refresh => 60, Type => 72
Horizontal => 800, 840, 968, 1056, 0
Vertical => 480, 491, 493, 525, 0
### Primary display => ConnectorId = 31, Resolution = 800x480
PVR:(Error): OpenServices: PVRDRMOpenRender failed [0, ]
PVR:(Error): PVRSRVConnect: Unable to open connection. [0, ]
PVR:(Error): Couldn't connect to services [0, ]
PVR:(Error): PVRDRIEGLGlobalDataInit: PVR Services initialisation failed [0, ]
PVR:(Error): PVRDRICreateScreenImpl: Couldn't create EGL global data [0, ]
MESA-LOADER: failed to open kms_swrast (search paths /usr/lib/dri)
failed to load driver: kms_swrast
MESA-LOADER: failed to open swrast (search paths /usr/lib/dri)
failed to load swrast driver
Segmentation fault (core dumped)

Thanks.
Rgds
Shine

Hello Shin,

Could you please share how the customer built the rootfs? Also, is the GPU enabled in the device tree file and how was the GPU driver compiled?

Regards,
Krunal

Hi Krunal,

Customer used tisdk-rootfs-image-am335x-evm.tar.gz in SDK. Besides, if he used the arago-base-tisdk-image-am335x-evm filesystem, the output is below.

Thanks.
Rgds
Shine

Hello Shin,

Based on the above picture, the customer is using newer Kernel but an older filesystem. Please ask the customer to use the filesystem that comes with the PSDK6.3. (Ref. Link: https://software-dl.ti.com/processor-sdk-linux/esd/AM335X/latest/index_FDS.html)

Regards,
Krunal