Hi Clement and Chen-Yu Tsai,
this time we send the kernel logs as requested, but before that here are our
findings. We have inspected the LCD TFT panel and although it is from
Olimex it
is not compatible with the "olimex,lcd-olinuxino" simple panel driver. It
has the
very same board but the eeprom ic is not present, this time we checked the
I2C
tracks and the olimex documentation. It seems that only some models have
this
eeprom installed, and the driver needs this to autodetect the panel model.
Also
we would like to use diferent panels in the future, so declaring the panel
in the
I2C bus is not an option.
We make some changes to the device tree, as Chen-Yu Tsai suggested the panel
should be declared as a panel-dpi (with timings, backlight, power, etc)
Below these
lines you could check our complete device tree. This time nothing happens,
in the
kernel logs no sun4i-drm driver messages... but, as we have been trying
many many
combinations without luck, when we disable this panel (status "okay" ->
"disabled")
then in the kernel logs some sun4i-drm driver messages appear (at last!)
some of
them complaining about the frontend and the non existence of panel. By the
way,
until now we could see on the panel only thanks to the uboot configuration:
CONFIG_VIDEO_LCD_MODE="x:1024,y:600,depth:18,pclk_khz:45000,le:150,ri:16,up:21,lo:2,hs:10,vs:2,sync:3,vmode:0"
CONFIG_VIDEO_LCD_POWER="PB10"
CONFIG_VIDEO_LCD_BL_PWM="PB2"
but when we disable the panel on device tree then the panel turns off as
linux boot.
Here comes the device tree [1], the kernel logs [2] (no changes) and the
messages
that appear when we disable the panel [3] (from the sun4i-drm driver) Note:
Don't
take into account other messages regarding the lost of entropy... as we
also have
problems with cryptodevice and rng-tools (sunxi crypto) and that is another
story.
Thanks again for your help and excuse our ignorance :-)
Best Regards,
Sergio Sota
##################################################################################
[1]###############################################################################
##################################################################################
/*
* Copyright 2012 Maxime Ripard <maxime.rip...@free-electrons.com>
* Copyright 2013 Hans de Goede <hdego...@redhat.com>
*
* This file is dual-licensed: you can use it either under the terms
* of the GPL or the X11 license, at your option. Note that this dual
* licensing only applies to this file, and not this project as a
* whole.
*
* a) This file is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This file is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* Or, alternatively,
*
* b) Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following
* conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
/dts-v1/;
#include "sun5i-a13.dtsi"
#include "sunxi-common-regulators.dtsi"
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/pwm/pwm.h>
#include <dt-bindings/interrupt-controller/irq.h>
/ {
model = "Olimex A13-Olinuxino Micro";
compatible = "olimex,a13-olinuxino-micro", "allwinner,sun5i-a13";
aliases {
serial0 = &uart1;
};
chosen {
stdout-path = "serial0:115200n8";
};
leds {
compatible = "gpio-leds";
pinctrl-names = "default";
pinctrl-0 = <&led_pins_olinuxinom>;
power {
label = "a13-olinuxino-micro:green:power";
gpios = <&pio 6 9 GPIO_ACTIVE_HIGH>; /* PG9 */
default-state = "on";
};
};
/*****************************************************************************
* clock spi0 mcp2515 (spi can controller)
*****************************************************************************/
clocks {
#address-cells = <1>;
#size-cells = <1>;
can0_osc_fixed: can0_osc_fixed {
compatible = "fixed-clock";
#clock-cells = <0>;
clock-frequency = <10000000>;
};
};
/*****************************************************************************
* panel backlight
*****************************************************************************/
backlight: backlight {
compatible = "pwm-backlight";
pwms = <&pwm 0 50000 PWM_POLARITY_INVERTED>;
brightness-levels = <0 10 20 30 40 50 60 70 80 90 100>;
default-brightness-level = <8>;
status = "okay";
};
/*****************************************************************************
* panel tft lcd 10.1" (rgb interface) (default)
*****************************************************************************/
panel {
#address-cells = <1>;
#size-cells = <0>;
compatible = "panel-dpi";
power-supply = <®_vcc3v3>;
enable-gpios = <&pio 1 10 GPIO_ACTIVE_HIGH>;
backlight = <&backlight>;
data-mapping = "rgb666";
width-mm = <224>;
height-mm = <126>;
status = "okay";
port {
#address-cells = <1>;
#size-cells = <0>;
panel_input: endpoint {
remote-endpoint = <&tcon0_out_lcd>;
};
};
panel-timing {
clock-frequency = <45000000>;
hactive = <1024>;
vactive = <600>;
hfront-porch = <16>;
hback-porch = <150>;
hsync-len = <10>;
vback-porch = <2>;
vfront-porch = <21>;
vsync-len = <2>;
hsync-active = <0>;
vsync-active = <0>;
de-active = <1>;
pixelclk-active = <1>;
};
};
/*****************************************************************************
* panel tft lcd 7.0" (rgb interface) (test)
*****************************************************************************/
/*
panel {
#address-cells = <1>;
#size-cells = <0>;
compatible = "panel-dpi";
power-supply = <®_vcc3v3>;
enable-gpios = <&pio 1 10 GPIO_ACTIVE_HIGH>;
backlight = <&backlight>;
data-mapping = "rgb666";
width-mm = <154>;
height-mm = <86>;
status = "disabled";
port {
#address-cells = <1>;
#size-cells = <0>;
panel_input: endpoint {
remote-endpoint = <&tcon0_out_lcd>;
};
};
panel-timing {
clock-frequency = <33000000>;
hactive = <800>;
vactive = <480>;
hfront-porch = <209>;
hback-porch = <16>;
hsync-len = <30>;
vback-porch = <22>;
vfront-porch = <22>;
vsync-len = <1>;
hsync-active = <0>;
vsync-active = <0>;
de-active = <1>;
pixelclk-active = <1>;
};
};
*/
};
&ehci0 {
status = "okay";
};
&i2c0 {
status = "okay";
};
&i2c1 {
status = "okay";
};
&i2c2 {
status = "okay";
};
&mmc0 {
vmmc-supply = <®_vcc3v3>;
bus-width = <4>;
cd-gpios = <&pio 6 0 GPIO_ACTIVE_LOW>; /* PG0 */
status = "okay";
};
&ohci0 {
status = "okay";
};
&otg_sram {
status = "okay";
};
®_usb0_vbus {
gpio = <&pio 6 12 GPIO_ACTIVE_HIGH>; /* PG12 */
status = "okay";
};
®_usb1_vbus {
gpio = <&pio 6 11 GPIO_ACTIVE_HIGH>; /* PG11 */
status = "okay";
};
&uart1 {
pinctrl-names = "default";
pinctrl-0 = <&uart1_pg_pins>;
status = "okay";
};
&usb_otg {
dr_mode = "otg";
status = "okay";
};
&usbphy {
usb0_id_det-gpios = <&pio 6 2 (GPIO_ACTIVE_HIGH | GPIO_PULL_UP)>; /*
PG2 */
usb0_vbus_det-gpios = <&pio 6 1 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>;
/* PG1 */
usb0_vbus-supply = <®_usb0_vbus>;
usb1_vbus-supply = <®_usb1_vbus>;
status = "okay";
};
&pio {
led_pins_olinuxinom: led-pin {
pins = "PG9";
function = "gpio_out";
drive-strength = <20>;
};
/*****************************************************************************
* spi0 pins
*****************************************************************************/
spi0_pins: spi0_pins {
pins = "PC0", "PC1", "PC2";
function = "spi0";
};
spi0_cs0_pin: spi0_cs_pin {
pins = "PC3";
function = "spi0";
};
/*****************************************************************************
* spi2 ethernet controller (enc28j60) pins
*****************************************************************************/
eth0_irq_pin: eth0_irq_pin {
pins = "PB3";
function = "irq";
bias-pull-up;
};
/*****************************************************************************
* spi2 pins
*****************************************************************************/
spi2_pins: spi2_pins {
pins = "PE1", "PE2", "PE3";
function = "spi2";
};
spi2_cs0_pin: spi2_cs0_pin {
pins = "PE0";
function = "spi2";
};
/*****************************************************************************
* spi0 can controller (mcp2515) pins
*****************************************************************************/
can0_irq_pin: can0_irq_pin {
pins = "PB4";
function = "irq";
bias-pull-up;
};
};
/*****************************************************************************
* spi0 (mcp2515 spi can controller)
*****************************************************************************/
&spi0 {
#address-cells = <1>;
#size-cells = <0>;
pinctrl-names = "default";
pinctrl-0 = <&spi0_pins>, <&spi0_cs0_pin>;
status = "okay";
mcp2515@0 {
compatible = "microchip,mcp2515";
reg = <0>;
pinctrl-names = "default";
pinctrl-0 = <&can0_irq_pin>;
interrupt-parent = <&pio>;
interrupts = <1 4 2>; /* PB4 IRQ_TYPE_EDGE_FALLING */
clocks = <&can0_osc_fixed>;
spi-max-frequency = <10000000>;
status = "okay";
};
};
/*****************************************************************************
* spi2 (enc28j60 spi ethernet controller)
*****************************************************************************/
&spi2 {
#address-cells = <1>;
#size-cells = <0>;
pinctrl-names = "default";
pinctrl-0 = <&spi2_pins>, <&spi2_cs0_pin>;
status = "okay";
enc28j60@0 {
compatible = "microchip,enc28j60";
/* compatible = "microchip,encx24j600"; */
reg = <0>;
pinctrl-names = "default";
pinctrl-0 = <ð0_irq_pin>;
interrupt-parent = <&pio>;
interrupts = <1 3 2>; /* PB3 IRQ_TYPE_EDGE_FALLING */
spi-max-frequency = <12000000>;
status = "okay";
};
};
/*****************************************************************************
* codec audio controller (headphones)
*****************************************************************************/
&codec {
status = "okay";
};
/*****************************************************************************
* crypto engine (sha, md5, rng)
*****************************************************************************/
&crypto {
status = "okay";
};
/*****************************************************************************
* [fe0] -> [be0] -> [tcon0] |-> [panel] (tft lcd 10.1") <- [pwm]
* |-> [tve0] (vga/cvbs port)
*****************************************************************************/
/*****************************************************************************
* front end (display engine)
*****************************************************************************/
&fe0 {
status = "okay";
};
/*****************************************************************************
* back end (display engine)
*****************************************************************************/
&be0 {
status = "okay";
};
/*****************************************************************************
* pipeline (display engine)
*****************************************************************************/
&tcon0 {
pinctrl-names = "default";
pinctrl-0 = <&lcd_rgb666_pins>;
status = "okay";
};
/*****************************************************************************
* timing controller (panel tft lcd 10.1")
*****************************************************************************/
&tcon0_out {
tcon0_out_lcd: endpoint@0 {
reg = <0>;
remote-endpoint = <&panel_input>;
allwinner,tcon-channel = <0>;
};
};
/*****************************************************************************
* tv encoder controller (vga/cvbs video output)
*****************************************************************************/
&tve0 {
status = "okay";
};
/*****************************************************************************
* pwm controller
*****************************************************************************/
&pwm {
pinctrl-names = "default";
pinctrl-0 = <&pwm0_pin>;
status = "okay";
};
##################################################################################
[2]###############################################################################
##################################################################################
[ 0.000000] Booting Linux on physical CPU 0x0
[ 0.000000] Linux version 5.4.82 (sergio@fanamoel) (gcc version 9.3.0
(Buildroot -gbc8b7d5)) #5 SMP Tue Dec 15 15:39:33 CET 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: Olimex A13-Olinuxino Micro
[ 0.000000] Memory policy: Data cache writeback
[ 0.000000] Reserved memory: created CMA memory pool at 0x43c00000, size
96 MiB
[ 0.000000] OF: reserved mem: initialized node default-pool, compatible
id shared-dma-pool
[ 0.000000] On node 0 totalpages: 64936
[ 0.000000] Normal zone: 508 pages used for memmap
[ 0.000000] Normal zone: 0 pages reserved
[ 0.000000] Normal zone: 64936 pages, LIFO batch:15
[ 0.000000] CPU: All CPU(s) started in SVC mode.
[ 0.000000] percpu: Embedded 15 pages/cpu s30604 r8192 d22644 u61440
[ 0.000000] pcpu-alloc: s30604 r8192 d22644 u61440 alloc=15*4096
[ 0.000000] pcpu-alloc: [0] 0
[ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 64428
[ 0.000000] Kernel command line: console=ttyS0,115200 earlyprintk
root=/dev/mmcblk0p2 rootwait
[ 0.000000] Dentry cache hash table entries: 32768 (order: 5, 131072
bytes, linear)
[ 0.000000] Inode-cache hash table entries: 16384 (order: 4, 65536
bytes, linear)
[ 0.000000] mem auto-init: stack:off, heap alloc:off, heap free:off
[ 0.000000] Memory: 146872K/259744K available (7168K kernel code, 444K
rwdata, 1888K rodata, 1024K init, 248K bss, 14568K reserved, 98304K
cma-reserved, 0K highmem)
[ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
[ 0.000000] rcu: Hierarchical RCU implementation.
[ 0.000000] rcu: RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=1.
[ 0.000000] rcu: RCU calculated value of scheduler-enlistment delay is
10 jiffies.
[ 0.000000] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=1
[ 0.000000] NR_IRQS: 16, nr_irqs: 16, preallocated irqs: 16
[ 0.000000] random: get_random_bytes called from
start_kernel+0x2b0/0x458 with crng_init=0
[ 0.000020] sched_clock: 32 bits at 24MHz, resolution 41ns, wraps every
89478484971ns
[ 0.000049] clocksource: timer: mask: 0xffffffff max_cycles: 0xffffffff,
max_idle_ns: 79635851949 ns
[ 0.000226] clocksource: timer: mask: 0xffffffff max_cycles: 0xffffffff,
max_idle_ns: 6370868154 ns
[ 0.000479] Console: colour dummy device 80x30
[ 0.000539] Calibrating delay loop... 1001.88 BogoMIPS (lpj=5009408)
[ 0.090102] pid_max: default: 32768 minimum: 301
[ 0.090253] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes,
linear)
[ 0.090268] Mountpoint-cache hash table entries: 1024 (order: 0, 4096
bytes, linear)
[ 0.090998] CPU: Testing write buffer coherency: ok
[ 0.091062] CPU0: Spectre v2: firmware did not set auxiliary control
register IBE bit, system vulnerable
[ 0.091419] CPU0: thread -1, cpu 0, socket -1, mpidr 0
[ 0.092041] Setting up static identity map for 0x40100000 - 0x40100060
[ 0.092208] rcu: Hierarchical SRCU implementation.
[ 0.092657] smp: Bringing up secondary CPUs ...
[ 0.092672] smp: Brought up 1 node, 1 CPU
[ 0.092681] SMP: Total of 1 processors activated (1001.88 BogoMIPS).
[ 0.092688] CPU: All CPU(s) started in SVC mode.
[ 0.093136] devtmpfs: initialized
[ 0.097192] VFP support v0.3: implementor 41 architecture 3 part 30
variant c rev 3
[ 0.097456] clocksource: jiffies: mask: 0xffffffff max_cycles:
0xffffffff, max_idle_ns: 19112604462750000 ns
[ 0.097481] futex hash table entries: 256 (order: 2, 16384 bytes, linear)
[ 0.103293] pinctrl core: initialized pinctrl subsystem
[ 0.104439] NET: Registered protocol family 16
[ 0.106049] DMA: preallocated 256 KiB pool for atomic coherent
allocations
[ 0.106938] hw-breakpoint: debug architecture 0x4 unsupported.
[ 0.122081] SCSI subsystem initialized
[ 0.122397] libata version 3.00 loaded.
[ 0.122640] usbcore: registered new interface driver usbfs
[ 0.122693] usbcore: registered new interface driver hub
[ 0.122757] usbcore: registered new device driver usb
[ 0.122965] mc: Linux media interface: v0.10
[ 0.123001] videodev: Linux video capture interface: v2.00
[ 0.123058] pps_core: LinuxPPS API ver. 1 registered
[ 0.123066] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo
Giometti <giome...@linux.it>
[ 0.123095] PTP clock support registered
[ 0.123321] Advanced Linux Sound Architecture Driver Initialized.
[ 0.124291] clocksource: Switched to clocksource timer
[ 0.125108] simple-framebuffer 4fda8000.framebuffer: framebuffer at
0x4fda8000, 0x258000 bytes, mapped to 0x(ptrval)
[ 0.125127] simple-framebuffer 4fda8000.framebuffer: format=x8r8g8b8,
mode=1024x600x32, linelength=4096
[ 0.134238] Console: switching to colour frame buffer device 128x37
[ 0.142607] simple-framebuffer 4fda8000.framebuffer: fb0: simplefb
registered!
[ 0.150213] thermal_sys: Registered thermal governor 'step_wise'
[ 0.150746] NET: Registered protocol family 2
[ 0.151291] tcp_listen_portaddr_hash hash table entries: 512 (order: 0,
6144 bytes, linear)
[ 0.151321] TCP established hash table entries: 2048 (order: 1, 8192
bytes, linear)
[ 0.151351] TCP bind hash table entries: 2048 (order: 2, 16384 bytes,
linear)
[ 0.151384] TCP: Hash tables configured (established 2048 bind 2048)
[ 0.151492] UDP hash table entries: 256 (order: 1, 8192 bytes, linear)
[ 0.151516] UDP-Lite hash table entries: 256 (order: 1, 8192 bytes,
linear)
[ 0.151661] NET: Registered protocol family 1
[ 0.152329] RPC: Registered named UNIX socket transport module.
[ 0.152345] RPC: Registered udp transport module.
[ 0.152352] RPC: Registered tcp transport module.
[ 0.152357] RPC: Registered tcp NFSv4.1 backchannel transport module.
[ 0.153967] workingset: timestamp_bits=30 max_order=16 bucket_order=0
[ 0.161263] NFS: Registering the id_resolver key type
[ 0.161311] Key type id_resolver registered
[ 0.161318] Key type id_legacy registered
[ 0.161415] NET: Registered protocol family 38
[ 0.161475] Block layer SCSI generic (bsg) driver version 0.4 loaded
(major 247)
[ 0.161486] io scheduler mq-deadline registered
[ 0.161493] io scheduler kyber registered
[ 0.162314] sun4i-usb-phy 1c13400.phy: Couldn't request ID GPIO
[ 0.165013] sun5i-pinctrl 1c20800.pinctrl: initialized sunXi PIO driver
[ 0.166333] sun5i-pinctrl 1c20800.pinctrl: 1c20800.pinctrl supply vcc-pb
not found, using dummy regulator
[ 0.166874] pwm-backlight backlight: backlight supply power not found,
using dummy regulator
[ 0.221806] Serial: 8250/16550 driver, 8 ports, IRQ sharing disabled
[ 0.223723] sun5i-pinctrl 1c20800.pinctrl: 1c20800.pinctrl supply vcc-pg
not found, using dummy regulator
[ 0.224815] printk: console [ttyS0] disabled
[ 0.244934] 1c28400.serial: ttyS0 at MMIO 0x1c28400 (irq = 36, base_baud
= 1500000) is a U6_16550A
[ 0.837326] printk: console [ttyS0] enabled
[ 0.843446] sun5i-pinctrl 1c20800.pinctrl: 1c20800.pinctrl supply vcc-pd
not found, using dummy regulator
[ 0.857689] sun5i-pinctrl 1c20800.pinctrl: 1c20800.pinctrl supply vcc-pc
not found, using dummy regulator
[ 0.868442] sun5i-pinctrl 1c20800.pinctrl: 1c20800.pinctrl supply vcc-pe
not found, using dummy regulator
[ 0.879549] libphy: Fixed MDIO Bus: probed
[ 0.883655] CAN device driver interface
[ 1.725254] random: fast init done
[ 1.910042] mcp251x spi0.0: MCP251x didn't enter in conf mode after reset
[ 1.916873] mcp251x spi0.0: Probe failed, err=16
[ 1.921526] mcp251x: probe of spi0.0 failed with error -16
[ 1.927469] enc28j60 spi1.0: Ethernet driver 1.02 loaded
[ 1.939158] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[ 1.945787] ehci-platform: EHCI generic platform driver
[ 1.951703] enc28j60 spi1.0 eth0: link down
[ 1.956124] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[ 1.962325] ohci-platform: OHCI generic platform driver
[ 1.974351] i2c /dev entries driver
[ 1.986037] sunxi-wdt 1c20c90.watchdog: Watchdog enabled (timeout=16
sec, nowayout=0)
[ 1.995762] sun5i-pinctrl 1c20800.pinctrl: 1c20800.pinctrl supply vcc-pf
not found, using dummy regulator
[ 2.011183] sunxi-mmc 1c0f000.mmc: Got CD GPIO
[ 2.041601] sunxi-mmc 1c0f000.mmc: initialized, max. request size: 16384
KB
[ 2.049620] sun4i-ss 1c15000.crypto-engine: Die ID 1
[ 2.082072] usbcore: registered new interface driver usbhid
[ 2.087721] usbhid: USB HID core driver
[ 2.097756] cedrus 1c0e000.video-codec: Device registered as /dev/video0
[ 2.112019] debugfs: Directory '1c22c00.codec' with parent 'sun4i-codec'
already present!
[ 2.127627] sun4i-codec 1c22c00.codec: Codec <-> 1c22c00.codec mapping ok
[ 2.140917] NET: Registered protocol family 17
[ 2.145456] can: controller area network core (rev 20170425 abi 9)
[ 2.151744] NET: Registered protocol family 29
[ 2.156213] can: raw protocol (rev 20170425)
[ 2.160482] can: broadcast manager protocol (rev 20170425 t)
[ 2.166154] can: netlink gateway (rev 20190810) max_hops=1
[ 2.171881] Key type dns_resolver registered
[ 2.176290] Registering SWP/SWPB emulation handler
[ 2.197283] sun5i-pinctrl 1c20800.pinctrl: 1c20800.pinctrl supply vcc-pd
not found, using dummy regulator
[ 2.213341] ehci-platform 1c14000.usb: EHCI Host Controller
[ 2.219052] ehci-platform 1c14000.usb: new USB bus registered, assigned
bus number 1
[ 2.232575] ehci-platform 1c14000.usb: irq 24, io mem 0x01c14000
[ 2.238678] mmc0: host does not support reading read-only switch,
assuming write-enable
[ 2.257069] mmc0: new high speed SDHC card at address aaaa
[ 2.267926] ehci-platform 1c14000.usb: USB 2.0 started, EHCI 1.00
[ 2.274677] mmcblk0: mmc0:aaaa SS16G 14.8 GiB
[ 2.285113] hub 1-0:1.0: USB hub found
[ 2.290522] hub 1-0:1.0: 1 port detected
[ 2.299716] mmcblk0: p1 p2
[ 2.304084] ohci-platform 1c14400.usb: Generic Platform OHCI controller
[ 2.310840] ohci-platform 1c14400.usb: new USB bus registered, assigned
bus number 2
[ 2.324868] ohci-platform 1c14400.usb: irq 25, io mem 0x01c14400
[ 2.407000] hub 2-0:1.0: USB hub found
[ 2.410946] hub 2-0:1.0: 1 port detected
[ 2.420810] usb_phy_generic usb_phy_generic.0.auto:
usb_phy_generic.0.auto supply vcc not found, using dummy regulator
[ 2.432117] musb-hdrc musb-hdrc.1.auto: MUSB HDRC host driver
[ 2.437964] musb-hdrc musb-hdrc.1.auto: new USB bus registered, assigned
bus number 3
[ 2.451585] hub 3-0:1.0: USB hub found
[ 2.460348] hub 3-0:1.0: 1 port detected
[ 2.470321] sun5i-pinctrl 1c20800.pinctrl: 1c20800.pinctrl supply vcc-pd
not found, using dummy regulator
[ 2.486175] sun5i-pinctrl 1c20800.pinctrl: 1c20800.pinctrl supply vcc-pd
not found, using dummy regulator
[ 2.501366] hctosys: unable to open rtc device (rtc0)
[ 2.506763] ALSA device list:
[ 2.509737] #0: sun4i-codec
[ 2.548014] EXT4-fs (mmcblk0p2): mounted filesystem with ordered data
mode. Opts: (null)
[ 2.556233] VFS: Mounted root (ext4 filesystem) readonly on device 179:2.
[ 2.573458] devtmpfs: mounted
[ 2.578317] Freeing unused kernel memory: 1024K
[ 2.588068] Run /sbin/init as init process
[ 2.907811] EXT4-fs (mmcblk0p2): re-mounted. Opts: (null)
[ 3.459578] cryptodev: loading out-of-tree module taints kernel.
[ 3.489157] cryptodev: driver 1.11 loaded.
[ 3.645748] udevd[91]: starting version 3.2.9
[ 3.670450] random: udevd: uninitialized urandom read (16 bytes read)
[ 3.698902] random: udevd: uninitialized urandom read (16 bytes read)
[ 3.719746] random: udevd: uninitialized urandom read (16 bytes read)
[ 3.802315] udevd[92]: starting eudev-3.2.9
[ 6.282520] urandom_read: 1 callbacks suppressed
[ 6.282531] random: dd: uninitialized urandom read (512 bytes read)
[ 6.582832] random: dbus-uuidgen: uninitialized urandom read (12 bytes
read)
[ 6.614975] random: dbus-uuidgen: uninitialized urandom read (8 bytes
read)
[ 7.322509] enc28j60 spi1.0 eth0: normal mode
[ 7.327010] enc28j60 spi1.0 eth0: multicast mode
[ 7.523150] random: crng init done
[ 7.526575] random: 2 urandom warning(s) missed due to ratelimiting
[ 8.144967] enc28j60 spi1.0 eth0: link up - Half duplex
[ 10.983560] sun4i-ss 1c15000.crypto-engine: ERROR: Cannot allocate
fallback for cbc(des) -2
[ 11.060702] sun4i-ss 1c15000.crypto-engine: ERROR: Cannot allocate
fallback for cbc(des3_ede) -2
[ 11.172575] sun4i-ss 1c15000.crypto-engine: ERROR: Cannot allocate
fallback for cbc(aes) -2
[ 11.243105] sun4i-ss 1c15000.crypto-engine: ERROR: Cannot allocate
fallback for cbc(aes) -2
[ 11.303542] sun4i-ss 1c15000.crypto-engine: ERROR: Cannot allocate
fallback for cbc(aes) -2
[ 11.541122] sun4i-ss 1c15000.crypto-engine: ERROR: Cannot allocate
fallback for ecb(aes) -2
[ 11.604164] sun4i-ss 1c15000.crypto-engine: ERROR: Cannot allocate
fallback for ecb(aes) -2
[ 11.661342] sun4i-ss 1c15000.crypto-engine: ERROR: Cannot allocate
fallback for ecb(aes) -2
[ 33.124321] vcc3v0: disabling
[ 33.127316] vcc5v0: disabling
[ 33.130282] usb0-vbus: disabling
[ 50.222729] sun4i-ss 1c15000.crypto-engine: ERROR: Cannot allocate
fallback for cbc(des) -2
[ 50.283230] sun4i-ss 1c15000.crypto-engine: ERROR: Cannot allocate
fallback for cbc(des3_ede) -2
[ 50.414581] sun4i-ss 1c15000.crypto-engine: ERROR: Cannot allocate
fallback for cbc(aes) -2
[ 50.462177] sun4i-ss 1c15000.crypto-engine: ERROR: Cannot allocate
fallback for cbc(aes) -2
[ 50.531644] sun4i-ss 1c15000.crypto-engine: ERROR: Cannot allocate
fallback for cbc(aes) -2
[ 50.792128] sun4i-ss 1c15000.crypto-engine: ERROR: Cannot allocate
fallback for ecb(aes) -2
[ 50.853913] sun4i-ss 1c15000.crypto-engine: ERROR: Cannot allocate
fallback for ecb(aes) -2
[ 50.912563] sun4i-ss 1c15000.crypto-engine: ERROR: Cannot allocate
fallback for ecb(aes) -2
##################################################################################
[3]###############################################################################
##################################################################################
....
....
[ 0.821822] printk: console [ttyS0] enabled
[ 0.827885] sun5i-pinctrl 1c20800.pinctrl: 1c20800.pinctrl supply vcc-pd
not found, using dummy regulator
[ 0.838967] sun4i-backend 1e60000.display-backend: Couldn't find
matching frontend, frontend features disabled
[ 0.849374] sun4i-drm display-engine: bound 1e60000.display-backend (ops
0xc084ba58)
[ 0.857516] sun4i-drm display-engine: No panel or bridge found... RGB
output disabled
[ 0.865383] sun4i-drm display-engine: bound 1c0c000.lcd-controller (ops
0xc084a5f8)
[ 0.873157] sun4i-drm display-engine: bound 1c0a000.tv-encoder (ops
0xc084b318)
[ 0.880485] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[ 0.887103] [drm] No driver support for vblank timestamp query.
[ 0.893018] checking generic (4fe89000 177000) vs hw (0 ffffffff)
[ 0.893023] fb0: switching to sun4i-drm-fb from simple
[ 0.898563] Console: switching to colour dummy device 80x30
[ 0.904878] [drm] Initialized sun4i-drm 1.0.0 20150629 for
display-engine on minor 0
[ 0.960782] Console: switching to colour frame buffer device 90x36
[ 0.986888] sun4i-drm display-engine: fb0: sun4i-drmdrmfb frame buffer
device
[ 0.995855] sun5i-pinctrl 1c20800.pinctrl: 1c20800.pinctrl supply vcc-pc
not found, using dummy regulator
[ 1.006602] sun5i-pinctrl 1c20800.pinctrl: 1c20800.pinctrl supply vcc-pe
not found, using dummy regulator
[ 1.017640] libphy: Fixed MDIO Bus: probed
[ 1.021747] CAN device driver interface
[ 1.636375] random: fast init done
....
....
El sábado, 12 de diciembre de 2020 a las 4:00:51 UTC+1, Chen-Yu Tsai
escribió:
> On Sat, Dec 12, 2020 at 3:33 AM Sergio Sota <pika...@gmail.com> wrote:
> >
> > Hi Clement,
> >
> > yes, tve0 is only for VGA/CVBS video output (which we don't use right
> now)
> > But just in case we have enabled this controller and the result is the
> same.
> >
> > You're probably right about the I2C port (as the binding suggest) The
> thing is
> > we are using the olimex olinuxino tft lcd 10.1" panel, and as the
> binding file
> > states there should be an I2C bus connection (besides the RGB, hsync,
> vsync,
> > de, clk, backlight, etc) This I2C bus should connect to an internal
> eeprom that
> > contains the timing requirements (then the driver knows what kind of
> panel is
> > attached and selects between 4.3/7/10.1 inches olimex panels) But then on
> > the physical boards there is no I2C bus connecting the panel... (check
> the
> > schematics) besides in the future we intend to use other tft lcd 10.1"
> panels.
> >
> > Olimex A13SOM board schematic:
> >
> https://github.com/OLIMEX/SOM/blob/master/A13/A13-SOM/A13-SOM512_Rev_G.pdf
> >
> > Olimex Olinuxino-micro board schematic (with an A13 similar as A13SOM)
> >
> https://github.com/OLIMEX/OLINUXINO/blob/master/HARDWARE/A13-OLinuXino-MICRO/1.%20Latest%20hardware%20revision/A13-OLinuXino-MICRO%20hardware%20revision%20B1/A13-OLinuXino-MICRO_Rev_B1.pdf
> >
> > Olimex Olinuxino 10.1" tft lcd board schematic
> >
> https://github.com/OLIMEX/OLINUXINO/blob/master/HARDWARE/LCDs/LCD-OLinuXino-10TS/Hardware%20revision%20C1/LCD-OLINUXINO-10''TS_Rev_C.pdf
> >
> > that's why we set the timing in the device tree. So, may be what we
> should do
> > is remove the panel from the compatible line and use it only as a
> generic one:
> >
> > +compatible = "simple-panel";
> > -compatible = "olimex,lcd-olinuxino", "simple-panel";
> >
> > Anyway, we will check both posibilities (defining the panel on a I2C bus
> and
> > in the root but only as a generic panel) Thanks again for your
> invaluable help :-D
>
> If you want to specify display timings in the device tree, you should be
> using the "panel-dpi" compatible, as specified in the panel-dpi binding:
>
> Documentation/devicetree/bindings/display/panel/panel-dpi.yaml
>
> Also, when asking for help, please always include full kernel logs. Others
> do not know what is happening on your system and can only guess if you
> do not provide logs.
>
> ChenYu
>
>
> > Best Regards,
> > Sergio Sota
> >
> > El viernes, 11 de diciembre de 2020 a las 19:56:16 UTC+1,
> peron...@gmail.com escribió:
> >>
> >> Hi Sergio,
> >>
> >> Sorry looks like the tve0 is only required for composite / VGA output.
> >>
> >> Which LCD Panel do you use ?
> >>
> >> Looks like the bindings you are using should be declared on a I2C bus.
> >>
> https://github.com/torvalds/linux/blob/master/Documentation/devicetree/bindings/display/panel/olimex,lcd-olinuxino.yaml
> >>
> >> So the drivers will read the configuration from the I2C eeprom
> >> Also check that CONFIG_DRM_PANEL_OLIMEX_LCD_OLINUXINO is enabled.
> >>
> >> Regards,
> >> Clement
> >>
> >> On Fri, 11 Dec 2020 at 17:37, Clément Péron <peron...@gmail.com> wrote:
> >> >
> >> > Hi Sergio,
> >> >
> >> > Maybe you missed enabling tve0 ?
> >> >
> >> >
> https://elixir.bootlin.com/linux/v5.9.13/source/arch/arm/boot/dts/sun5i.dtsi#L244
> >> >
> >> > Also could you send the bootlog is this doesn't fix your issue.
> >> >
> >> > Clement
> >> >
> >> > On Fri, 11 Dec 2020 at 17:13, Sergio Sota <pika...@gmail.com> wrote:
> >> > >
> >> > > Hi Clement,
> >> > >
> >> > > this week we have had no luck with Allwinner A13 video decoding,
> here you
> >> > > can find my device tree. We have added panel description (before we
> used
> >> > > an uboot configuration) front-end, back-end and tcon. Also on linux
> mainline
> >> > > kernel (5.9.11) we have selected DRM_SUN4I and DRM_SUN4I_BACKEND,
> >> > > but seems to be no DRM plane support on our system (no sun4i-drm
> kernel
> >> > > messages and no /dev/dri/card0 device)
> >> > >
> >> > > Also with VLC player we have selected in the menu the configuration
> options:
> >> > > VA-API video decoder and X11 video output (XCB) but no video
> decoding.
> >> > > With MPV player instead we can see some video frames, but it seems
> to be
> >> > > trying to decode via software, so it is almost like static pictures.
> >> > >
> >> > > Best Regards,
> >> > > Sergio Sota
> >> > >
> >> > > This device tree is based on mainline kernel
> sun5i-a13-olinuxino-micro.dts
> >> > >
> >> > > #######################################################
> >> > > ################## DEVICE TREE START #####################
> >> > > #######################################################
> >> > >
> >> > >
> >> > > /*
> >> > > * Copyright 2012 Maxime Ripard <maxime...@free-electrons.com>
> >> > > * Copyright 2013 Hans de Goede <hdeg...@redhat.com>
> >> > > *
> >> > > * This file is dual-licensed: you can use it either under the terms
> >> > > * of the GPL or the X11 license, at your option. Note that this dual
> >> > > * licensing only applies to this file, and not this project as a
> >> > > * whole.
> >> > > *
> >> > > * a) This file is free software; you can redistribute it and/or
> >> > > * modify it under the terms of the GNU General Public License as
> >> > > * published by the Free Software Foundation; either version 2 of the
> >> > > * License, or (at your option) any later version.
> >> > > *
> >> > > * This file is distributed in the hope that it will be useful,
> >> > > * but WITHOUT ANY WARRANTY; without even the implied warranty of
> >> > > * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> >> > > * GNU General Public License for more details.
> >> > > *
> >> > > * Or, alternatively,
> >> > > *
> >> > > * b) Permission is hereby granted, free of charge, to any person
> >> > > * obtaining a copy of this software and associated documentation
> >> > > * files (the "Software"), to deal in the Software without
> >> > > * restriction, including without limitation the rights to use,
> >> > > * copy, modify, merge, publish, distribute, sublicense, and/or
> >> > > * sell copies of the Software, and to permit persons to whom the
> >> > > * Software is furnished to do so, subject to the following
> >> > > * conditions:
> >> > > *
> >> > > * The above copyright notice and this permission notice shall be
> >> > > * included in all copies or substantial portions of the Software.
> >> > > *
> >> > > * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
> >> > > * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
> >> > > * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
> >> > > * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
> >> > > * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
> >> > > * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
> >> > > * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
> >> > > * OTHER DEALINGS IN THE SOFTWARE.
> >> > > */
> >> > >
> >> > > /dts-v1/;
> >> > > #include "sun5i-a13.dtsi"
> >> > > #include "sunxi-common-regulators.dtsi"
> >> > > #include <dt-bindings/gpio/gpio.h>
> >> > > #include <dt-bindings/pwm/pwm.h>
> >> > > #include <dt-bindings/interrupt-controller/irq.h>
> >> > >
> >> > > / {
> >> > > model = "Olimex A13-Olinuxino Micro";
> >> > > compatible = "olimex,a13-olinuxino-micro", "allwinner,sun5i-a13";
> >> > >
> >> > > aliases {
> >> > > serial0 = &uart1;
> >> > > };
> >> > >
> >> > > chosen {
> >> > > stdout-path = "serial0:115200n8";
> >> > > };
> >> > >
> >> > > leds {
> >> > > compatible = "gpio-leds";
> >> > > pinctrl-names = "default";
> >> > > pinctrl-0 = <&led_pins_olinuxinom>;
> >> > >
> >> > > power {
> >> > > label = "a13-olinuxino-micro:green:power";
> >> > > gpios = <&pio 6 9 GPIO_ACTIVE_HIGH>; /* PG9 */
> >> > > default-state = "on";
> >> > > };
> >> > > };
> >> > >
> >> > >
> /*****************************************************************************
> >> > > * clock spi0 mcp2515 (spi can controller)
> >> > >
> *****************************************************************************/
> >> > > clocks {
> >> > > #address-cells = <1>;
> >> > > #size-cells = <1>;
> >> > > can0_osc_fixed: can0_osc_fixed {
> >> > > compatible = "fixed-clock";
> >> > > #clock-cells = <0>;
> >> > > clock-frequency = <10000000>;
> >> > > };
> >> > > };
> >> > >
> >> > >
> /*****************************************************************************
> >> > > * panel backlight
> >> > >
> *****************************************************************************/
> >> > > backlight: backlight {
> >> > > compatible = "pwm-backlight";
> >> > > pwms = <&pwm 0 50000 PWM_POLARITY_INVERTED>;
> >> > > brightness-levels = <0 10 20 30 40 50 60 70 80 90 100>;
> >> > > default-brightness-level = <8>;
> >> > > };
> >> > >
> >> > >
> /*****************************************************************************
> >> > > * panel tft lcd 10.1" (rgb interface)
> >> > >
> *****************************************************************************/
> >> > > panel {
> >> > > compatible = "olimex,lcd-olinuxino", "simple-panel";
> >> > > power-supply = <®_vcc3v3>;
> >> > > enable-gpios = <&pio 1 10 GPIO_ACTIVE_HIGH>; /* PB10 */
> >> > > backlight = <&backlight>;
> >> > > status = "okay";
> >> > >
> >> > > display-timings {
> >> > > timing0 {
> >> > > clock-frequency = <45000000>;
> >> > > hactive = <1024>;
> >> > > vactive = <600>;
> >> > > hfront-porch = <16>;
> >> > > hback-porch = <150>;
> >> > > hsync-len = <10>;
> >> > > vback-porch = <2>;
> >> > > vfront-porch = <21>;
> >> > > vsync-len = <2>;
> >> > > hsync-active = <0>;
> >> > > vsync-active = <0>;
> >> > > de-active = <1>;
> >> > > pixelclk-active = <1>;
> >> > > };
> >> > > };
> >> > >
> >> > > port {
> >> > > #address-cells = <1>;
> >> > > #size-cells = <0>;
> >> > >
> >> > > panel_input: endpoint {
> >> > > remote-endpoint = <&tcon0_out_lcd>;
> >> > > };
> >> > > };
> >> > > };
> >> > > };
> >> > >
> >> > > &ehci0 {
> >> > > status = "okay";
> >> > > };
> >> > >
> >> > > &i2c0 {
> >> > > status = "okay";
> >> > > };
> >> > >
> >> > > &i2c1 {
> >> > > status = "okay";
> >> > > };
> >> > >
> >> > > &i2c2 {
> >> > > status = "okay";
> >> > > };
> >> > >
> >> > > &mmc0 {
> >> > > vmmc-supply = <®_vcc3v3>;
> >> > > bus-width = <4>;
> >> > > cd-gpios = <&pio 6 0 GPIO_ACTIVE_LOW>; /* PG0 */
> >> > > status = "okay";
> >> > > };
> >> > >
> >> > > &ohci0 {
> >> > > status = "okay";
> >> > > };
> >> > >
> >> > > &otg_sram {
> >> > > status = "okay";
> >> > > };
> >> > >
> >> > > ®_usb0_vbus {
> >> > > gpio = <&pio 6 12 GPIO_ACTIVE_HIGH>; /* PG12 */
> >> > > status = "okay";
> >> > > };
> >> > >
> >> > > ®_usb1_vbus {
> >> > > gpio = <&pio 6 11 GPIO_ACTIVE_HIGH>; /* PG11 */
> >> > > status = "okay";
> >> > > };
> >> > >
> >> > > &uart1 {
> >> > > pinctrl-names = "default";
> >> > > pinctrl-0 = <&uart1_pg_pins>;
> >> > > status = "okay";
> >> > > };
> >> > >
> >> > > &usb_otg {
> >> > > dr_mode = "otg";
> >> > > status = "okay";
> >> > > };
> >> > >
> >> > > &usbphy {
> >> > > usb0_id_det-gpios = <&pio 6 2 (GPIO_ACTIVE_HIGH | GPIO_PULL_UP)>;
> /* PG2 */
> >> > > usb0_vbus_det-gpios = <&pio 6 1 (GPIO_ACTIVE_HIGH |
> GPIO_PULL_DOWN)>; /* PG1 */
> >> > > usb0_vbus-supply = <®_usb0_vbus>;
> >> > > usb1_vbus-supply = <®_usb1_vbus>;
> >> > > status = "okay";
> >> > > };
> >> > >
> >> > > &pio {
> >> > > led_pins_olinuxinom: led-pin {
> >> > > pins = "PG9";
> >> > > function = "gpio_out";
> >> > > drive-strength = <20>;
> >> > > };
> >> > >
> >> > >
> /*****************************************************************************
> >> > > * spi0 pins
> >> > >
> *****************************************************************************/
> >> > > spi0_pins: spi0_pins {
> >> > > pins = "PC0", "PC1", "PC2";
> >> > > function = "spi0";
> >> > > };
> >> > >
> >> > > spi0_cs0_pin: spi0_cs_pin {
> >> > > pins = "PC3";
> >> > > function = "spi0";
> >> > > };
> >> > >
> >> > >
> /*****************************************************************************
> >> > > * spi2 ethernet controller (enc28j60) pins
> >> > >
> *****************************************************************************/
> >> > > eth0_irq_pin: eth0_irq_pin {
> >> > > pins = "PB3";
> >> > > function = "irq";
> >> > > bias-pull-up;
> >> > > };
> >> > >
> >> > >
> /*****************************************************************************
> >> > > * spi2 pins
> >> > >
> *****************************************************************************/
> >> > > spi2_pins: spi2_pins {
> >> > > pins = "PE1", "PE2", "PE3";
> >> > > function = "spi2";
> >> > > };
> >> > >
> >> > > spi2_cs0_pin: spi2_cs0_pin {
> >> > > pins = "PE0";
> >> > > function = "spi2";
> >> > > };
> >> > >
> >> > >
> /*****************************************************************************
> >> > > * spi0 can controller (mcp2515) pins
> >> > >
> *****************************************************************************/
> >> > > can0_irq_pin: can0_irq_pin {
> >> > > pins = "PB4";
> >> > > function = "irq";
> >> > > bias-pull-up;
> >> > > };
> >> > > };
> >> > >
> >> > >
> /*****************************************************************************
> >> > > * spi0 (mcp2515 spi can controller)
> >> > >
> *****************************************************************************/
> >> > > &spi0 {
> >> > > #address-cells = <1>;
> >> > > #size-cells = <0>;
> >> > > pinctrl-names = "default";
> >> > > pinctrl-0 = <&spi0_pins>, <&spi0_cs0_pin>;
> >> > > status = "okay";
> >> > >
> >> > > mcp2515@0 {
> >> > > compatible = "microchip,mcp2515";
> >> > > reg = <0>;
> >> > > pinctrl-names = "default";
> >> > > pinctrl-0 = <&can0_irq_pin>;
> >> > > interrupt-parent = <&pio>;
> >> > > interrupts = <1 4 2>; /* PB4 IRQ_TYPE_EDGE_FALLING */
> >> > > clocks = <&can0_osc_fixed>;
> >> > > spi-max-frequency = <10000000>;
> >> > > status = "okay";
> >> > > };
> >> > > };
> >> > >
> >> > >
> /*****************************************************************************
> >> > > * spi2 (enc28j60 spi ethernet controller)
> >> > >
> *****************************************************************************/
> >> > > &spi2 {
> >> > > #address-cells = <1>;
> >> > > #size-cells = <0>;
> >> > > pinctrl-names = "default";
> >> > > pinctrl-0 = <&spi2_pins>, <&spi2_cs0_pin>;
> >> > > status = "okay";
> >> > >
> >> > > enc28j60@0 {
> >> > > compatible = "microchip,enc28j60";
> >> > > /* compatible = "microchip,encx24j600"; */
> >> > > reg = <0>;
> >> > > pinctrl-names = "default";
> >> > > pinctrl-0 = <ð0_irq_pin>;
> >> > > interrupt-parent = <&pio>;
> >> > > interrupts = <1 3 2>; /* PB3 IRQ_TYPE_EDGE_FALLING */
> >> > > spi-max-frequency = <12000000>;
> >> > > status = "okay";
> >> > > };
> >> > > };
> >> > >
> >> > >
> /*****************************************************************************
> >> > > * codec audio controller (headphones)
> >> > >
> *****************************************************************************/
> >> > > &codec {
> >> > > status = "okay";
> >> > > };
> >> > >
> >> > >
> /*****************************************************************************
> >> > > * crypto engine (sha, md5, rng)
> >> > >
> *****************************************************************************/
> >> > > &crypto {
> >> > > status = "okay";
> >> > > };
> >> > >
> >> > >
> /*****************************************************************************
> >> > > * front end (display engine)
> >> > >
> *****************************************************************************/
> >> > > &fe0 {
> >> > > status = "okay";
> >> > > };
> >> > >
> >> > >
> /*****************************************************************************
> >> > > * back end (display engine)
> >> > >
> *****************************************************************************/
> >> > > &be0 {
> >> > > status = "okay";
> >> > > };
> >> > >
> >> > >
> /*****************************************************************************
> >> > > * pipeline (display engine)
> >> > >
> *****************************************************************************/
> >> > > &tcon0 {
> >> > > pinctrl-names = "default";
> >> > > pinctrl-0 = <&lcd_rgb666_pins>;
> >> > > status = "okay";
> >> > > };
> >> > >
> >> > >
> /*****************************************************************************
> >> > > * timing controller (panel tft lcd 10.1")
> >> > >
> *****************************************************************************/
> >> > > &tcon0_out {
> >> > > tcon0_out_lcd: endpoint@0 {
> >> > > reg = <0>;
> >> > > remote-endpoint = <&panel_input>;
> >> > > };
> >> > > };
> >> > >
> >> > >
> /*****************************************************************************
> >> > > * pwm controller
> >> > >
> *****************************************************************************/
> >> > > &pwm {
> >> > > pinctrl-names = "default";
> >> > > pinctrl-0 = <&pwm0_pin>;
> >> > > status = "okay";
> >> > > };
> >> > >
> >> > >
> >> > > #######################################################
> >> > > ################### DEVICE TREE END ######################
> >> > > #######################################################
> >> > >
> >> > > El domingo, 6 de diciembre de 2020 a las 19:02:09 UTC+1,
> peron...@gmail.com escribió:
> >> > >>
> >> > >> Hi Sergio,
> >> > >>
> >> > >> On Fri, 4 Dec 2020 at 13:31, Sergio Sota <pika...@gmail.com>
> wrote:
> >> > >> >
> >> > >> > Dear all,
> >> > >> >
> >> > >> > I'm building a linux system for the Olimex A13SOM module. This
> little module comes
> >> > >> > with the Allwinner A13 SOC. In the past we have been using other
> modules with the
> >> > >> > Allwinner A20 SOC and the old sunxi-linux kernel in order to
> have support for all
> >> > >> > the SOC peripherals (as the Video Engine decoder, Mali GPU, etc)
> >> > >> >
> >> > >> > This time we would like to use a mainline kernel, taking into
> account that by now
> >> > >> > almost all peripherals are supported in mainline. We have had
> luck tunning device
> >> > >> > tree (as we were used to use .fex files) and by now we can have
> Ethernet over SPI,
> >> > >> > Can interface over SPI, ALSA audio output, LCD RGB video output,
> Cryto engine to
> >> > >> > generate fast entropy, OpenGL ES support (thanks to LIMA driver
> and Mesa3d libs)
> >> > >> > and so on... but we would like also to have video decoding
> support.
> >> > >> >
> >> > >> > We have turned on the frontend, backend, video engine in the
> device tree, build
> >> > >> > the kernel with Cedrus V4L M2M driver, libva_vl42_request and
> v4l2_request_test.
> >> > >> > (and also set the CMA memory allocation, environment variables,
> etc)
> >> > >> >
> >> > >> > Using vainfo everything is ok, the linux driver-libva request
> part works, but then
> >> > >> > we check with v4l2_request_test utility and it fails as there is
> no DRM support on
> >> > >> > our system. We have on the system /dev/video0 and /dev/media0
> but no /dev/dri/card0
> >> > >> > device (in fact we selected the linux sun4i-drm driver but no
> message appers on the
> >> > >> > boot sequence regarding this, even when build as module it
> happens nothing...)
> >> > >> >
> >> > >> > We have checked the Cedrus driver information and appears to be
> no support for the
> >> > >> > DRM plane in A13 SOC (broken/missing) and as I understand that
> means that part of
> >> > >> > the picture composing work should be done by software (and
> that's not reliable)
> >> > >> >
> >> > >> > My question is: is there DRM plane support for A13 SOC? (as time
> goes on I checked
> >> > >> > there has been work done in the mainline kernel and fixes made)
> Then, in case of no
> >> > >> > support, are there plans to add this support in the future? and
> finally, could we
> >> > >> > play video files without this DRM support? by what means?
> >> > >>
> >> > >> Sorry I can't help you a lot on this.
> >> > >> I don't know if the wiki is up to date for this.
> >> > >> But note that A13 is similar to R8 => C.H.I.P Computer.
> >> > >> All stuff you found on R8 will be the same for A13.
> >> > >>
> >> > >> Have a look at the R8 CHIP device-tree.
> >> > >>
> https://elixir.bootlin.com/linux/latest/source/arch/arm/boot/dts/sun5i-r8-chip.dts
> >> > >>
> >> > >> And check that you have a correct TCON description in your dt.
> >> > >> If you can, post your device-tree.
> >> > >> And don't forget to reply if you make it works :)
> >> > >>
> >> > >> Regards,
> >> > >> Clement
> >> > >>
> >> > >>
> >> > >> >
> >> > >> > Thanks in advance for your help and your time, your team have
> made a wonderful
> >> > >> > work. I also apologize for my poor English, and for writing this
> email as maybe this is
> >> > >> > not the proper way to issue this questions, but didn't know
> other way
> >> > >> >
> >> > >> > Best Regards,
> >> > >> > Sergio Sota
> >> > >> >
> >> > >> > --
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