Other Parts Discussed in Thread: TPS65217, DA8XX
Tool/software: Linux
Hi
I have been digging around on the forums here (and in other places) to try and understand how best to drive our LCD display.
The board is custom but closely based on a beaglebone black.
The display uses an Ilitek9340 driver with an interface in two parts; that I am having difficulty working out how to define in my device tree.
It is configured in what the Ilitek datasheet calls "3 wire 9 bit serial interface" mode; i.e. half duplex SPI mode.
This serial interface should be used to configure the chip whereafter the image data itself should be driven through a parallel RBG interface. This RGB interface can be set up to have a DataEnable (DE) line if necessary.
From my digging about this does not seem to be an uncommon situation (unfortunately neither does having difficulty with it!)
My hope was that I could define both:
- an lcd device on the spi bus which would run through the init process in the ili9340 driver
- a panel that would provide the necessary display
The spi device I have defined as:
&spi1 {
status = "okay";
pinctrl-names = "default";
pinctrl-0 = <&spi1_pins>;
lcd@0 {
compatible = "ilitek,ili9340";
reg = <0>;
spi-max-frequency = <24000000>;
rotate = <90>;
fps = <30>;
buswidth = <9>;
width = <240>;
height = <320>;
reset-gpios= <&gpio3 19 GPIO_ACTIVE_LOW>;
};
};
The panel:
panel {
compatible = "ti,tilcdc,panel";
pinctrl-names = "default", "sleep";
pinctrl-0 = <&lcd_pins_default>;
pinctrl-1 = <&lcd_pins_sleep>;
status = "okay";
enable-gpios = <&gpio2 25 0>;
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 {
240x320 {
clock-frequency = <6350000>; /* 6.35 MHz */
hactive = <240>;
vactive = <320>;
hfront-porch = <10>;
hback-porch = <20>;
hsync-len = <10>;
vback-porch = <2>;
vfront-porch = <4>;
vsync-len = <2>;
hsync-active = <0>;
vsync-active = <0>;
de-active = <1>;
pixelclk-active = <1>;
};
};
};
The pinmuxs I am using for both are:
lcd_pins_default: lcd_pins_default {
pinctrl-single,pins = <
0xa0 (PIN_OUTPUT | MUX_MODE0) /*DB0 lcd_data0.lcd_data0 */
0xa4 (PIN_OUTPUT | MUX_MODE0) /*DB1 lcd_data1.lcd_data1 */
0xa8 (PIN_OUTPUT | MUX_MODE0) /*DB2 lcd_data2.lcd_data2 */
0xac (PIN_OUTPUT | MUX_MODE0) /*DB3 lcd_data3.lcd_data3 */
0xb0 (PIN_OUTPUT | MUX_MODE0) /*DB4 lcd_data4.lcd_data4 */
0xb4 (PIN_OUTPUT | MUX_MODE0) /*DB5 lcd_data5.lcd_data5 */
0xb8 (PIN_OUTPUT | MUX_MODE0) /*DB6 lcd_data6.lcd_data6 */
0xbc (PIN_OUTPUT | MUX_MODE0) /*DB7 lcd_data7.lcd_data7 */
0xc0 (PIN_OUTPUT | MUX_MODE0) /*DB8 lcd_data8.lcd_data8 */
0xc4 (PIN_OUTPUT | MUX_MODE0) /*DB9 lcd_data9.lcd_data9 */
0xc8 (PIN_OUTPUT | MUX_MODE0) /*DB10 lcd_data10.lcd_data10 */
0xcc (PIN_OUTPUT | MUX_MODE0) /*DB11 lcd_data11.lcd_data11 */
0xd0 (PIN_OUTPUT | MUX_MODE0) /*DB12 lcd_data12.lcd_data12 */
0xd4 (PIN_OUTPUT | MUX_MODE0) /*DB13 lcd_data13.lcd_data13 */
0xd8 (PIN_OUTPUT | MUX_MODE0) /*DB14 lcd_data14.lcd_data14 */
0xdc (PIN_OUTPUT | MUX_MODE0) /*DB15 lcd_data15.lcd_data15 */
0x38 (PIN_OUTPUT | MUX_MODE1) /*DB16 gpmc_ad14.lcd_data16 */
0x3c (PIN_OUTPUT | MUX_MODE1) /*DB17 gpmc_ad15.lcd_data17 */
0xe0 (PIN_OUTPUT_PULLDOWN | MUX_MODE0) /*HSYNC lcd_vsync.lcd_vsync */
0xe4 (PIN_OUTPUT_PULLDOWN | MUX_MODE0) /*HSYNC lcd_hsync.lcd_hsync */
0xe8 (PIN_OUTPUT_PULLDOWN | MUX_MODE0) /*DOTCLK lcd_pclk.lcd_pclk */
0xec (PIN_OUTPUT_PULLDOWN | MUX_MODE7) /*DE lcd_ac_bias_en.gpio*/
>;
};
spi1_pins: pinmux_spi1_pins {
pinctrl-single,pins = <
0x108 (PIN_INPUT_PULLUP | MUX_MODE2) /* SPI1_SCL */
0x110 (PIN_INPUT_PULLUP | MUX_MODE2) /* SPI1_MOSI */
0x19c (PIN_OUTPUT_PULLUP | MUX_MODE3) /* SPI1_CS */
0x1A4 (PIN_OUTPUT_PULLUP | MUX_MODE7) /* TFT_RESET */
>;
};
I can see the bytes being sent to over the SPI: the reset and CS look appropriate at the time (HI and LO respectively)
Tthis is using normal 4 wire mode; just not expecting anything in return, which should be sufficient for configuration.
I never see anything happen on the video lines
I can see /dev/fb0 from the fb_ili9340
And nodes
/proc/device-tree/panel /proc/device-tree/ocp/spi@481a0000/lcd@0
I think I was expecting another framebuffer for the panel: is there something else I need to define in the DTS for this to appear?
The full dmesg is here:
[ 0.000000] Booting Linux on physical CPU 0x0
[ 0.000000] Initializing cgroup subsys cpu
[ 0.000000] Initializing cgroup subsys cpuacct
[ 0.000000] Linux version 4.4.19-gdb0b54cdad (richard@richard-ubvm) (gcc version 5.3.1 20160113 (Linaro GCC 5.3-2016.02) ) #206 PREEMPT Tue Ju7
[ 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] Machine model: Compumedics Argo
[ 0.000000] cma: Reserved 24 MiB at 0x8d000000
[ 0.000000] Memory policy: Data cache writeback
[ 0.000000] On node 0 totalpages: 65536
[ 0.000000] free_area_init_node: node 0, pgdat c099f44c, node_mem_map cfdad000
[ 0.000000] Normal zone: 576 pages used for memmap
[ 0.000000] Normal zone: 0 pages reserved
[ 0.000000] Normal zone: 65536 pages, LIFO batch:15
[ 0.000000] CPU: All CPU(s) started in SVC mode.
[ 0.000000] AM335X ES2.1 (neon )
[ 0.000000] pcpu-alloc: s0 r0 d32768 u32768 alloc=1*32768
[ 0.000000] pcpu-alloc: [0] 0
[ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 64960
[ 0.000000] Kernel command line: console=ttyO0,115200n8 root=PARTUUID=1eb3b9b3-02 rw rootfstype=ext4 rootwait
[ 0.000000] PID hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.000000] Dentry cache hash table entries: 32768 (order: 5, 131072 bytes)
[ 0.000000] Inode-cache hash table entries: 16384 (order: 4, 65536 bytes)
[ 0.000000] Memory: 224624K/262144K available (6715K kernel code, 384K rwdata, 2508K rodata, 268K init, 271K bss, 12944K reserved, 24576K cma-)
[ 0.000000] Virtual kernel memory layout:
vector : 0xffff0000 - 0xffff1000 ( 4 kB)
fixmap : 0xffc00000 - 0xfff00000 (3072 kB)
vmalloc : 0xd0800000 - 0xff800000 ( 752 MB)
lowmem : 0xc0000000 - 0xd0000000 ( 256 MB)
pkmap : 0xbfe00000 - 0xc0000000 ( 2 MB)
modules : 0xbf000000 - 0xbfe00000 ( 14 MB)
.text : 0xc0008000 - 0xc090a004 (9225 kB)
.init : 0xc090b000 - 0xc094e000 ( 268 kB)
.data : 0xc094e000 - 0xc09ae2b0 ( 385 kB)
.bss : 0xc09ae2b0 - 0xc09f2158 ( 272 kB)
[ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
[ 0.000000] Preemptible hierarchical RCU implementation.
[ 0.000000] Build-time adjustment of leaf fanout to 32.
[ 0.000000] NR_IRQS:16 nr_irqs:16 16
[ 0.000000] IRQ: Found an INTC at 0xfa200000 (revision 5.0) with 128 interrupts
[ 0.000000] OMAP clockevent source: timer2 at 25000000 Hz
[ 0.000017] sched_clock: 32 bits at 25MHz, resolution 40ns, wraps every 85899345900ns
[ 0.000045] clocksource: timer1: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 76450417870 ns
[ 0.000059] OMAP clocksource: timer1 at 25000000 Hz
[ 0.000287] clocksource_probe: no matching clocksources found
[ 0.000525] Console: colour dummy device 80x30
[ 0.000558] WARNING: Your 'console=ttyO0' has been replaced by 'ttyS0'
[ 0.000567] This ensures that you still see kernel messages. Please
[ 0.000575] update your kernel commandline.
[ 0.000600] Calibrating delay loop... 597.60 BogoMIPS (lpj=2988032)
[ 0.118794] pid_max: default: 32768 minimum: 301
[ 0.118957] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.118973] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.119884] Initializing cgroup subsys io
[ 0.119926] Initializing cgroup subsys memory
[ 0.119974] Initializing cgroup subsys devices
[ 0.119995] Initializing cgroup subsys freezer
[ 0.120013] Initializing cgroup subsys perf_event
[ 0.120030] Initializing cgroup subsys pids
[ 0.120067] CPU: Testing write buffer coherency: ok
[ 0.120597] Setting up static identity map for 0x80008200 - 0x80008258
[ 0.126617] devtmpfs: initialized
[ 0.143045] VFP support v0.3: implementor 41 architecture 3 part 30 variant c rev 3
[ 0.162586] omap_hwmod: debugss: _wait_target_disable failed
[ 0.219974] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[ 0.222803] pinctrl core: initialized pinctrl subsystem
[ 0.224514] NET: Registered protocol family 16
[ 0.227357] DMA: preallocated 256 KiB pool for atomic coherent allocations
[ 0.248802] cpuidle: using governor ladder
[ 0.278786] cpuidle: using governor menu
[ 0.284427] gpiochip_add: registered GPIOs 0 to 31 on device: gpio
[ 0.284833] OMAP GPIO hardware version 0.1
[ 0.285865] gpiochip_add: registered GPIOs 32 to 63 on device: gpio
[ 0.286892] gpiochip_add: registered GPIOs 64 to 95 on device: gpio
[ 0.287882] gpiochip_add: registered GPIOs 96 to 127 on device: gpio
[ 0.298047] hw-breakpoint: debug architecture 0x4 unsupported.
[ 0.340092] edma 49000000.edma: TI EDMA DMA engine driver
[ 0.340579] of_get_named_gpiod_flags: can't parse 'gpio' property of node '/fixedregulator@0[0]'
[ 0.341071] of_get_named_gpiod_flags: parsed 'gpio' property of node '/fixedregulator@2[0]' - status (0)
[ 0.345293] omap_i2c 44e0b000.i2c: could not find pctldev for node /ocp/l4_wkup@44c00000/scm@210000/pinmux@800/pinmux_i2c0_pins, deferring proe
[ 0.345479] media: Linux media interface: v0.10
[ 0.345562] Linux video capture interface: v2.00
[ 0.345628] pps_core: LinuxPPS API ver. 1 registered
[ 0.345638] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@linux.it>
[ 0.345677] PTP clock support registered
[ 0.345757] EDAC MC: Ver: 3.0.0
[ 0.347312] omap-mailbox 480c8000.mailbox: omap mailbox rev 0x400
[ 0.347731] Advanced Linux Sound Architecture Driver Initialized.
[ 0.349465] clocksource: Switched to clocksource timer1
[ 0.364116] NET: Registered protocol family 2
[ 0.365157] TCP established hash table entries: 2048 (order: 1, 8192 bytes)
[ 0.365205] TCP bind hash table entries: 2048 (order: 1, 8192 bytes)
[ 0.365242] TCP: Hash tables configured (established 2048 bind 2048)
[ 0.365345] UDP hash table entries: 256 (order: 0, 4096 bytes)
[ 0.365372] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
[ 0.365570] NET: Registered protocol family 1
[ 0.366106] RPC: Registered named UNIX socket transport module.
[ 0.366130] RPC: Registered udp transport module.
[ 0.366139] RPC: Registered tcp transport module.
[ 0.366148] RPC: Registered tcp NFSv4.1 backchannel transport module.
[ 0.366195] PCI: CLS 0 bytes, default 64
[ 0.367411] hw perfevents: enabled with armv7_cortex_a8 PMU driver, 5 counters available
[ 0.370230] futex hash table entries: 256 (order: -1, 3072 bytes)
[ 0.381272] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[ 0.382556] NFS: Registering the id_resolver key type
[ 0.382647] Key type id_resolver registered
[ 0.382658] Key type id_legacy registered
[ 0.382761] ntfs: driver 2.1.32 [Flags: R/O].
[ 0.387541] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 248)
[ 0.387582] io scheduler noop registered
[ 0.387603] io scheduler deadline registered
[ 0.387814] io scheduler cfq registered (default)
[ 0.389830] pinctrl-single 44e10800.pinmux: 142 pins at pa f9e10800 size 568
[ 0.474503] Serial: 8250/16550 driver, 10 ports, IRQ sharing disabled
[ 0.480229] 44e09000.serial: ttyS0 at MMIO 0x44e09000 (irq = 158, base_baud = 3000000) is a 8250
[ 1.074380] console [ttyS0] enabled
[ 1.079717] 48022000.serial: ttyS1 at MMIO 0x48022000 (irq = 159, base_baud = 3000000) is a 8250
[ 1.090224] 48024000.serial: ttyS2 at MMIO 0x48024000 (irq = 160, base_baud = 3000000) is a 8250
[ 1.100476] [drm] Initialized drm 1.1.0 20060810
[ 1.106553] panel panel: GPIO lookup for consumer enable
[ 1.106575] panel panel: using device tree for GPIO lookup
[ 1.106627] of_get_named_gpiod_flags: parsed 'enable-gpios' property of node '/panel[0]' - status (0)
[ 1.106724] panel panel: found enable GPIO
[ 1.120175] loop: module loaded
[ 1.129304] libphy: Fixed MDIO Bus: probed
[ 1.136248] mousedev: PS/2 mouse device common for all mice
[ 1.142846] i2c /dev entries driver
[ 1.147730] cpuidle: enable-method property 'ti,am3352' found operations
[ 1.155676] omap_hsmmc 48060000.mmc: GPIO lookup for consumer cd
[ 1.155700] omap_hsmmc 48060000.mmc: using device tree for GPIO lookup
[ 1.155745] of_get_named_gpiod_flags: parsed 'cd-gpios' property of node '/ocp/mmc@48060000[0]' - status (0)
[ 1.155849] omap_hsmmc 48060000.mmc: Got CD GPIO
[ 1.160629] omap_hsmmc 48060000.mmc: GPIO lookup for consumer wp
[ 1.160648] omap_hsmmc 48060000.mmc: using device tree for GPIO lookup
[ 1.160665] of_get_named_gpiod_flags: can't parse 'wp-gpios' property of node '/ocp/mmc@48060000[0]'
[ 1.160680] of_get_named_gpiod_flags: can't parse 'wp-gpio' property of node '/ocp/mmc@48060000[0]'
[ 1.160694] omap_hsmmc 48060000.mmc: using lookup tables for GPIO lookup
[ 1.160709] omap_hsmmc 48060000.mmc: lookup for GPIO wp failed
[ 1.200351] omap_hsmmc 481d8000.mmc: GPIO lookup for consumer cd
[ 1.200378] omap_hsmmc 481d8000.mmc: using device tree for GPIO lookup
[ 1.200400] of_get_named_gpiod_flags: can't parse 'cd-gpios' property of node '/ocp/mmc@481d8000[0]'
[ 1.200415] of_get_named_gpiod_flags: can't parse 'cd-gpio' property of node '/ocp/mmc@481d8000[0]'
[ 1.200428] omap_hsmmc 481d8000.mmc: using lookup tables for GPIO lookup
[ 1.200443] omap_hsmmc 481d8000.mmc: lookup for GPIO cd failed
[ 1.200460] omap_hsmmc 481d8000.mmc: GPIO lookup for consumer wp
[ 1.200472] omap_hsmmc 481d8000.mmc: using device tree for GPIO lookup
[ 1.200486] of_get_named_gpiod_flags: can't parse 'wp-gpios' property of node '/ocp/mmc@481d8000[0]'
[ 1.200500] of_get_named_gpiod_flags: can't parse 'wp-gpio' property of node '/ocp/mmc@481d8000[0]'
[ 1.200513] omap_hsmmc 481d8000.mmc: using lookup tables for GPIO lookup
[ 1.200526] omap_hsmmc 481d8000.mmc: lookup for GPIO wp failed
[ 1.236893] mmc0: host does not support reading read-only switch, assuming write-enable
[ 1.247016] mmc0: new high speed SDHC card at address 59b4
[ 1.253398] mmcblk0: mmc0:59b4 1.84 GiB
[ 1.259831] mmcblk0: p1 p2
[ 1.320345] of_get_named_gpiod_flags: parsed 'gpios' property of node '/leds/led@2[0]' - status (0)
[ 1.320610] of_get_named_gpiod_flags: parsed 'gpios' property of node '/leds/led@3[0]' - status (0)
[ 1.320806] of_get_named_gpiod_flags: parsed 'gpios' property of node '/leds/led@4[0]' - status (0)
[ 1.320987] of_get_named_gpiod_flags: parsed 'gpios' property of node '/leds/led@5[0]' - status (0)
[ 1.321594] ledtrig-cpu: registered to indicate activity on CPUs
[ 1.327994] fbtft_of_value: width = 240
[ 1.349478] fbtft_of_value: height = 320
[ 1.353427] fbtft_of_value: buswidth = 9
[ 1.357370] fbtft_of_value: rotate = 90
[ 1.369480] fbtft_of_value: fps = 30
[ 1.373422] of_get_named_gpiod_flags: parsed 'reset-gpios' property of node '/ocp/spi@481a0000/lcd@0[0]' - status (0)
[ 2.022493] Console: switching to colour frame buffer device 40x30
[ 2.039530] graphics fb0: fb_ili9340 frame buffer, 320x240, 150 KiB video memory, 4 KiB DMA buffer memory, fps=33, spi2.0 at 24 MHz
[ 2.069653] NET: Registered protocol family 10
[ 2.083755] sit: IPv6 over IPv4 tunneling driver
[ 2.094006] NET: Registered protocol family 17
[ 2.103429] Key type dns_resolver registered
[ 2.114570] omap_voltage_late_init: Voltage driver support not added
[ 2.168050] tps65217 0-0024: TPS65217 ID 0xe version 1.2
[ 2.178309] at24 0-0050: 32768 byte 24c256 EEPROM, writable, 1 bytes/write
[ 2.191946] omap_i2c 44e0b000.i2c: bus 0 rev0.11 at 400 kHz
[ 2.208005] hctosys: unable to open rtc device (rtc0)
[ 2.227488] ALSA device list:
[ 2.235060] No soundcards found.
[ 2.290272] EXT4-fs (mmcblk0p2): mounted filesystem with ordered data mode. Opts: (null)
[ 2.298532] VFS: Mounted root (ext4 filesystem) on device 179:2.
[ 2.327519] devtmpfs: mounted
[ 2.339973] Freeing unused kernel memory: 268K (c090b000 - c094e000)
[ 2.346357] This architecture does not have kernel memory protection.
[ 2.644623] systemd[1]: System time before build time, advancing clock.
[ 2.725862] random: systemd: uninitialized urandom read (16 bytes read, 17 bits of entropy available)
[ 2.757111] random: systemd: uninitialized urandom read (16 bytes read, 17 bits of entropy available)
[ 2.803651] systemd[1]: systemd 229 running in system mode. (+PAM -AUDIT -SELINUX +IMA -APPARMOR +SMACK +SYSVINIT +UTMP -LIBCRYPTSETUP -GCRYPT)
[ 2.850670] systemd[1]: Detected architecture arm.
[ 2.881420] systemd[1]: Set hostname to <am335x-evm>.
[ 2.922666] omap_hsmmc 481d8000.mmc: card claims to support voltages below defined range
[ 3.043638] random: systemd-gpt-aut: uninitialized urandom read (16 bytes read, 20 bits of entropy available)
[ 3.064492] random: systemd-sysv-ge: uninitialized urandom read (16 bytes read, 21 bits of entropy available)
[ 3.102067] random: systemd-gpt-aut: uninitialized urandom read (16 bytes read, 21 bits of entropy available)
[ 3.119060] random: systemd-sysv-ge: uninitialized urandom read (16 bytes read, 21 bits of entropy available)
[ 3.168025] random: systemd-sysv-ge: uninitialized urandom read (16 bytes read, 23 bits of entropy available)
[ 3.280296] random: systemd: uninitialized urandom read (16 bytes read, 27 bits of entropy available)
[ 3.300286] random: systemd: uninitialized urandom read (16 bytes read, 27 bits of entropy available)
[ 3.321442] random: systemd: uninitialized urandom read (16 bytes read, 27 bits of entropy available)
[ 3.640287] systemd[1]: [/etc/systemd/system/gadget-init.service:15] Unknown lvalue 'ExecStopPre' in section 'Service'
[ 3.968404] mmc1: error -16 whilst initialising SDIO card
[ 4.129412] systemd[1]: sysinit.target: Found ordering cycle on sysinit.target/start
[ 4.137578] systemd[1]: sysinit.target: Found dependency on alignment.service/start
[ 4.145418] systemd[1]: sysinit.target: Found dependency on basic.target/start
[ 4.152736] systemd[1]: sysinit.target: Found dependency on sockets.target/start
[ 4.160210] systemd[1]: sysinit.target: Found dependency on dbus.socket/start
[ 4.167397] systemd[1]: sysinit.target: Found dependency on sysinit.target/start
[ 4.174870] systemd[1]: sysinit.target: Breaking ordering cycle by deleting job alignment.service/start
[ 4.184349] systemd[1]: alignment.service: Job alignment.service/start deleted to break ordering cycle starting with sysinit.target/start
[ 4.227814] systemd[1]: Listening on /dev/initctl Compatibility Named Pipe.
[ 4.260576] systemd[1]: Listening on Journal Socket.
[ 4.290887] systemd[1]: Listening on Network Service Netlink Socket.
[ 4.338653] systemd[1]: Reached target Remote File Systems.
[ 4.370888] systemd[1]: Started Dispatch Password Requests to Console Directory Watch.
[ 4.400528] systemd[1]: Started Forward Password Requests to Wall Directory Watch.
[ 4.430022] systemd[1]: Reached target Paths.
[ 4.450524] systemd[1]: Listening on Journal Socket (/dev/log).
[ 4.480349] systemd[1]: Listening on udev Control Socket.
[ 4.509984] systemd[1]: Reached target Swap.
[ 4.530195] systemd[1]: Listening on Syslog Socket.
[ 4.563044] systemd[1]: Created slice User and Session Slice.
[ 4.591677] systemd[1]: Created slice System Slice.
[ 4.645450] systemd[1]: Starting Load Kernel Modules...
[ 4.727182] systemd[1]: Starting Setup Virtual Console...
[ 4.808244] cryptodev: driver 1.8 loaded.
[ 4.821048] systemd[1]: Mounting Debug File System...
[ 4.912175] systemd[1]: Mounting Temporary Directory...
[ 4.966653] systemd[1]: Starting Remount Root and Kernel File Systems...
[ 5.037205] systemd[1]: Starting Create list of required static device nodes for the current kernel...
[ 5.082974] EXT4-fs (mmcblk0p2): re-mounted. Opts: (null)
[ 5.116082] systemd[1]: Created slice system-getty.slice.
[ 5.170122] systemd[1]: Reached target Slices.
[ 5.205886] systemd[1]: Mounting POSIX Message Queue File System...
[ 5.256454] systemd[1]: Starting Journal Service...
[ 5.302309] systemd[1]: Created slice system-serial\x2dgetty.slice.
[ 5.330578] systemd[1]: Listening on udev Kernel Socket.
[ 5.436205] systemd[1]: Mounted POSIX Message Queue File System.
[ 5.470438] systemd[1]: Mounted Debug File System.
[ 5.489965] systemd[1]: Mounted Temporary Directory.
[ 5.521044] systemd[1]: Started Journal Service.
[ 7.538846] systemd-journald[100]: Received request to flush runtime journal from PID 1
[ 9.581348] omap_wdt: OMAP Watchdog Timer Rev 0x01: initial timeout 60 sec
[ 9.698746] rtc rtc0: 44e3e000.rtc: dev (254:0)
[ 9.698820] omap_rtc 44e3e000.rtc: rtc core: registered 44e3e000.rtc as rtc0
[ 9.799375] am335x-phy-driver 47401300.usb-phy: GPIO lookup for consumer reset
[ 9.799419] am335x-phy-driver 47401300.usb-phy: using device tree for GPIO lookup
[ 9.799445] of_get_named_gpiod_flags: can't parse 'reset-gpios' property of node '/ocp/usb@47400000/usb-phy@47401300[0]'
[ 9.799679] of_get_named_gpiod_flags: can't parse 'reset-gpio' property of node '/ocp/usb@47400000/usb-phy@47401300[0]'
[ 9.799698] am335x-phy-driver 47401300.usb-phy: using lookup tables for GPIO lookup
[ 9.799715] am335x-phy-driver 47401300.usb-phy: lookup for GPIO reset failed
[ 9.799735] am335x-phy-driver 47401300.usb-phy: GPIO lookup for consumer vbus-detect
[ 9.799748] am335x-phy-driver 47401300.usb-phy: using device tree for GPIO lookup
[ 9.799763] of_get_named_gpiod_flags: can't parse 'vbus-detect-gpios' property of node '/ocp/usb@47400000/usb-phy@47401300[0]'
[ 9.799777] of_get_named_gpiod_flags: can't parse 'vbus-detect-gpio' property of node '/ocp/usb@47400000/usb-phy@47401300[0]'
[ 9.799791] am335x-phy-driver 47401300.usb-phy: using lookup tables for GPIO lookup
[ 9.799804] am335x-phy-driver 47401300.usb-phy: lookup for GPIO vbus-detect failed
[ 9.799897] 47401300.usb-phy supply vcc not found, using dummy regulator
[ 10.454944] omap_rng 48310000.rng: OMAP Random Number Generator ver. 20
[ 10.945547] omap-sham 53100000.sham: hw accel on OMAP rev 4.3
[ 11.261416] remoteproc0: wkup_m3 is available
[ 11.265921] remoteproc0: Note: remoteproc is still under development and considered experimental.
[ 11.389765] remoteproc0: THE BINARY FORMAT IS NOT YET FINALIZED, and backward compatibility isn't yet guaranteed.
[ 11.643958] remoteproc0: powering up wkup_m3
[ 11.697092] remoteproc0: Booting fw image am335x-pm-firmware.elf, size 217148
[ 11.748566] omap-aes 53500000.aes: OMAP AES hw accel rev: 3.2
[ 11.800128] remoteproc0: remote processor wkup_m3 is now up
[ 11.800162] wkup_m3_ipc 44e11324.wkup_m3_ipc: CM3 Firmware Version = 0x191
[ 12.240888] omap_hwmod: gfx: failed to hardreset
[ 12.427946] pvrsrvkm 56000000.sgx: Unable to reset SGX!
[ 12.511305] omap_hwmod: gfx: _wait_target_ready failed: -16
[ 12.604108] PVR_K:(Error): EnableSGXClocks: pm_runtime_get_sync failed (16)
[ 12.685566] PVR_K:(Error): SysInitialise: Failed to Enable system clocks (175)
[ 12.794359] omap_hwmod: pruss: _wait_target_ready failed: -16
[ 12.852168] ti-pruss 4a300000.pruss: couldn't enable pruss
[ 12.926355] ti-pruss: probe of 4a300000.pruss failed with error -16
[ 13.059077] PM: bootloader does not support rtc-only!
[ 14.191633] FAT-fs (mmcblk0p1): Volume was not properly unmounted. Some data may be corrupt. Please run fsck.
[ 17.078609] usbcore: registered new interface driver usbfs
[ 17.203279] usbcore: registered new interface driver hub
[ 17.244695] usbcore: registered new device driver usb
[ 17.400965] musb-hdrc: ConfigData=0xde (UTMI-8, dyn FIFOs, bulk combine, bulk split, HB-ISO Rx, HB-ISO Tx, SoftConn)
[ 17.401011] musb-hdrc: MHDRC RTL version 2.0
[ 17.401025] musb-hdrc: setup fifo_mode 4
[ 17.401054] musb-hdrc: 28/31 max ep, 16384/16384 memory
[ 17.401268] musb-hdrc musb-hdrc.0.auto: MUSB HDRC host driver
[ 17.407096] musb-hdrc musb-hdrc.0.auto: new USB bus registered, assigned bus number 1
[ 17.486526] hub 1-0:1.0: USB hub found
[ 17.502908] hub 1-0:1.0: 1 port detected
[ 19.263792] NET: Registered protocol family 15
[ 19.508700] Bluetooth: Core ver 2.21
[ 19.557468] NET: Registered protocol family 31
[ 19.624483] Bluetooth: HCI device and connection manager initialized
[ 19.692967] Bluetooth: HCI socket layer initialized
[ 19.697926] Bluetooth: L2CAP socket layer initialized
[ 19.818925] Bluetooth: SCO socket layer initialized
[ 19.856038] random: nonblocking pool is initialized
[ 20.599153] Initializing XFRM netlink socket
[ 20.872467] using random self ethernet address
[ 20.876976] using random host ethernet address
[ 20.943443] using host ethernet address: 98:5D:AD:4E:D2:60
[ 20.948975] using random self ethernet address
[ 21.025774] using random host ethernet address
[ 21.061317] using host ethernet address: 98:5D:AD:4E:D2:60
[ 21.129204] usb0: HOST MAC 98:5d:ad:4e:d2:60
[ 21.183849] usb0: MAC 46:92:2b:7e:30:a7
[ 21.314189] Mass Storage Function, version: 2009/09/11
[ 21.371392] LUN: removable file: (no medium)
[ 21.376140] LUN: removable read only file: /dev/mmcblk0p2
[ 21.470679] Number of LUNs=1
[ 21.500852] g_multi gadget: Multifunction Composite Gadget
[ 21.548663] g_multi gadget: g_multi ready
[ 21.746532] IPv6: ADDRCONF(NETDEV_UP): usb0: link is not ready
[ 21.862670] g_multi gadget: high-speed config #1: Multifunction with RNDIS
[ 21.872898] IPv6: ADDRCONF(NETDEV_CHANGE): usb0: link becomes ready
[ 127.047190] g_multi gadget: high-speed config #2: Multifunction with CDC ECM
[ 187.824336] hrtimer: interrupt took 187840 ns
I am hoping there might be someone that has experience of this type of screen that can offer some advice.
From digging about the fbtft_device driver looks to have support for a DTS entry with a GPIO parallel TFT along with a SPI init sequence: is this a better way to do this?
Thanks for reading - any suggestions would be gratefully received.
Best regards,
Richard
