iamdrq

@atonejust worked,driver in here https://github.com/iamdrq/panel-edp-friendlyelec

@atoneOk,I saw that.But nanopct4 used media kernel that it use extlinux havn't overlay.
It need adjust some file in path /boot,I send mesage to Erica

I tried a lot few days to driver a 3.5" TFT(the display ic is ST7701S,touch ic is FT5316) MIPI DSI color display panel on Orange Pi 4 with kernel 5.10.y .
but I unexpected found it worked on linux 4.4 legacy kernel ( but I don't want use legacy kernel ),that below:

 
But on kernel 5.x have some serious error in dmesg:
[ 6.135383] rockchip-drm display-subsystem: bound ff940000.hdmi (ops dw_hdmi_rockchip_ops [rockchipdrm]) [ 6.136150] rockchip-drm display-subsystem: bound ff960000.mipi (ops dw_mipi_dsi_rockchip_ops [rockchipdrm]) [ 6.405472] dw-mipi-dsi-rockchip ff960000.mipi: failed to write command FIFO [ 6.427829] dw-mipi-dsi-rockchip ff960000.mipi: failed to write command FIFO [ 6.448508] dw-mipi-dsi-rockchip ff960000.mipi: failed to write command FIFO [ 6.469160] dw-mipi-dsi-rockchip ff960000.mipi: failed to write command FIFO [ 6.490170] dw-mipi-dsi-rockchip ff960000.mipi: failed to write command FIFO ......  
what's mean 'dw-mipi-dsi-rockchip ff960000.mipi: failed to write command FIFO' ? I found the code in https://elixir.bootlin.com/linux/v5.10.6/source/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c :
 
static int dw_mipi_dsi_gen_pkt_hdr_write(struct dw_mipi_dsi *dsi, u32 hdr_val) { int ret; u32 val, mask; ret = readl_poll_timeout(dsi->base + DSI_CMD_PKT_STATUS, val, !(val & GEN_CMD_FULL), 1000, CMD_PKT_STATUS_TIMEOUT_US); if (ret) { dev_err(dsi->dev, "failed to get available command FIFO\n"); return ret; } dsi_write(dsi, DSI_GEN_HDR, hdr_val); mask = GEN_CMD_EMPTY | GEN_PLD_W_EMPTY; ret = readl_poll_timeout(dsi->base + DSI_CMD_PKT_STATUS, val, (val & mask) == mask, 1000, CMD_PKT_STATUS_TIMEOUT_US); if (ret) { dev_err(dsi->dev, "failed to write command FIFO\n"); return ret; } return 0; }  
Someone has tried to do this ? 

Oh,I fixed this problem spend 2 weeks,I finally heard sound from 3.5 mm jack (this jack is OMTP otherwise need keep press headphone button)
 
I see this topic,and I compair https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/sound/soc/codecs/rt5640.c and https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/sound/soc/codecs/rt5651.c,this rt5651 not enable mclk and orangepi4"s rt5651 linked i2s1,the i2s1's SCLK_I2S_8CH parent not SCLK_I2S1_8CH defult and need set alsamixer in following(also use alsactl save this alsamixer state):
amixer set 'HPO L' on amixer set 'HPO R' on amixer set 'HPOVOL L' on amixer set 'HPOVOL R' on amixer set 'HPO MIX HPVOL' on amixer set 'OUT MIXL DAC L1' on amixer set 'OUT MIXR DAC R1' on amixer set 'Stereo DAC MIXL DAC L1' on amixer set 'Stereo DAC MIXR DAC R1' on And I not familiar with electronics,I did some patch and hope this can help armbian fix 
fix-i2s1-clk.patch orangepi4-rt5651.patch orangepi4-i2s_8ch_mclk.dts
Armbian applied this patch to 'Armbian build system' and with minor tweaks,you can use it by 'Armbian build system' latest branch.

Oh,I fixed this problem spend 2 weeks,I finally heard sound from 3.5 mm jack (this jack is OMTP otherwise need keep press headphone button)
 
I see this topic,and I compair https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/sound/soc/codecs/rt5640.c and https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/sound/soc/codecs/rt5651.c,this rt5651 not enable mclk and orangepi4"s rt5651 linked i2s1,the i2s1's SCLK_I2S_8CH parent not SCLK_I2S1_8CH defult and need set alsamixer in following(also use alsactl save this alsamixer state):
amixer set 'HPO L' on amixer set 'HPO R' on amixer set 'HPOVOL L' on amixer set 'HPOVOL R' on amixer set 'HPO MIX HPVOL' on amixer set 'OUT MIXL DAC L1' on amixer set 'OUT MIXR DAC R1' on amixer set 'Stereo DAC MIXL DAC L1' on amixer set 'Stereo DAC MIXR DAC R1' on And I not familiar with electronics,I did some patch and hope this can help armbian fix 
fix-i2s1-clk.patch orangepi4-rt5651.patch orangepi4-i2s_8ch_mclk.dts
Armbian applied this patch to 'Armbian build system' and with minor tweaks,you can use it by 'Armbian build system' latest branch.

Yes,the orange pi 4's bluetooth also fixed.
the main line kernel support bcm bt chip,so I use the kernel driver  and not use brcm_patchram_plus file do this.
the 'wireless-wlan' and 'wireless-bluetooth' in dts,it is from rockchip's net/rfkill/rfkill-bt.c and net/rfkill/rfkill-wlan.c and this not found in main line kernel,so  'wireless-wlan' and 'wireless-bluetooth' should remove or disable,and wifi be driver by sdio node in dts.
the bluetooth will  be driver by uart->bluetooth->compatible = "brcm,bcm4345c5"(serial@ff180000->bluetooth->compatible = "brcm,bcm4345c5")
and the kernel config should enable CONFIG_SERIAL_DEV_BUS=y CONFIG_SERIAL_DEV_CTRL_TTYPORT=y CONFIG_BT_HCIUART_BCM=y CONFIG_BT_RFCOMM=m CONFIG_BT_RFCOMM_TTY=y
 
but have a little problem,need  do 'btmgmt --index 0 public-addr 11:22:33:44:55:66' set bt mac after boot,otherwise hciconfig will show 'DOWN RAW',someone konw fix this?
 
I did some dts over and hope this can help armbian fix 
bluetooth-opi4.dts linux-rockchip64-current.config

Look like you install image and dtb correctly,but you edit armbianEnv.txt not correctly or put overlay-user files not correctly.(Oh,I see my previous post,I spell error,should 'sudo apt install bluez')
Yes,this is not easy for simple user.I edit dts include bluetooth and not need add 'overlay-user',so:
restore your armbianEnv.txt install following dtb files reboot And should see:
root@orangepi4:~# dmesg |grep Blue [ 3.982085] Bluetooth: Core ver 2.22 [ 3.982126] Bluetooth: HCI device and connection manager initialized [ 3.982135] Bluetooth: HCI socket layer initialized [ 3.982140] Bluetooth: L2CAP socket layer initialized [ 3.982150] Bluetooth: SCO socket layer initialized [ 3.988355] Bluetooth: HCI UART driver ver 2.3 [ 3.988359] Bluetooth: HCI UART protocol H4 registered [ 3.990827] Bluetooth: HCI UART protocol Broadcom registered [ 4.341819] Bluetooth: hci0: BCM: chip id 130 [ 4.342164] Bluetooth: hci0: BCM: features 0x0f [ 4.344286] Bluetooth: hci0: BCM4345C5 [ 4.344299] Bluetooth: hci0: BCM4345C5 (003.006.006) build 0000 [ 5.045748] Bluetooth: hci0: BCM4345C5 (003.006.006) build 0038 root@orangepi4:~# hciconfig hci0: Type: Primary Bus: UART BD Address: 43:45:C5:00:1F:CA ACL MTU: 1021:8 SCO MTU: 64:1 UP RUNNING PSCAN RX bytes:397051100 acl:654339 sco:0 events:741 errors:0 TX bytes:42146 acl:432 sco:0 commands:258 errors:0  
OrangePi4-Image-dtb-v2.zip

Because default firmware include default  mac, Please download the file and replace the default firmware file: /lib/firmware/brcm/BCM4345C5.hcd,then reboot

About the Orangepi 4 's bluetooth chip AP6256,I read hci how get bluetooth mac address from 'https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/bluetooth/btbcm.c',the origin firmware file /lib/firmware/brcm/BCM4345C5.hcd include default mac address '43:45:C5:00:1F:AC',it is cause driver mark it 'HCI_QUIRK_INVALID_BDADDR',so I use hex editer change the  default mac to '43:45:C5:00:1F:CA',you can use this firmware file replace /lib/firmware/brcm/BCM4345C5.hcd and not need do 'btmgmt --index 0 public-addr 11:22:33:44:55:66' set bluetooth mac after boot.
BCM4345C5.hcd

Yes,the orange pi 4's bluetooth also fixed.
the main line kernel support bcm bt chip,so I use the kernel driver  and not use brcm_patchram_plus file do this.
the 'wireless-wlan' and 'wireless-bluetooth' in dts,it is from rockchip's net/rfkill/rfkill-bt.c and net/rfkill/rfkill-wlan.c and this not found in main line kernel,so  'wireless-wlan' and 'wireless-bluetooth' should remove or disable,and wifi be driver by sdio node in dts.
the bluetooth will  be driver by uart->bluetooth->compatible = "brcm,bcm4345c5"(serial@ff180000->bluetooth->compatible = "brcm,bcm4345c5")
and the kernel config should enable CONFIG_SERIAL_DEV_BUS=y CONFIG_SERIAL_DEV_CTRL_TTYPORT=y CONFIG_BT_HCIUART_BCM=y CONFIG_BT_RFCOMM=m CONFIG_BT_RFCOMM_TTY=y
 
but have a little problem,need  do 'btmgmt --index 0 public-addr 11:22:33:44:55:66' set bt mac after boot,otherwise hciconfig will show 'DOWN RAW',someone konw fix this?
 
I did some dts over and hope this can help armbian fix 
bluetooth-opi4.dts linux-rockchip64-current.config

Well done!
 
I have added your patches with minor tweaks to the Armbian build system - it will be available in the images from the download area... at some point ;-)

Yes,please back up your old files
orangepi4-sound-bt.zip

Yes,the orange pi 4's bluetooth also fixed.
the main line kernel support bcm bt chip,so I use the kernel driver  and not use brcm_patchram_plus file do this.
the 'wireless-wlan' and 'wireless-bluetooth' in dts,it is from rockchip's net/rfkill/rfkill-bt.c and net/rfkill/rfkill-wlan.c and this not found in main line kernel,so  'wireless-wlan' and 'wireless-bluetooth' should remove or disable,and wifi be driver by sdio node in dts.
the bluetooth will  be driver by uart->bluetooth->compatible = "brcm,bcm4345c5"(serial@ff180000->bluetooth->compatible = "brcm,bcm4345c5")
and the kernel config should enable CONFIG_SERIAL_DEV_BUS=y CONFIG_SERIAL_DEV_CTRL_TTYPORT=y CONFIG_BT_HCIUART_BCM=y CONFIG_BT_RFCOMM=m CONFIG_BT_RFCOMM_TTY=y
 
but have a little problem,need  do 'btmgmt --index 0 public-addr 11:22:33:44:55:66' set bt mac after boot,otherwise hciconfig will show 'DOWN RAW',someone konw fix this?
 
I did some dts over and hope this can help armbian fix 
bluetooth-opi4.dts linux-rockchip64-current.config

Oh,I fixed this problem spend 2 weeks,I finally heard sound from 3.5 mm jack (this jack is OMTP otherwise need keep press headphone button)
 
I see this topic,and I compair https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/sound/soc/codecs/rt5640.c and https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/sound/soc/codecs/rt5651.c,this rt5651 not enable mclk and orangepi4"s rt5651 linked i2s1,the i2s1's SCLK_I2S_8CH parent not SCLK_I2S1_8CH defult and need set alsamixer in following(also use alsactl save this alsamixer state):
amixer set 'HPO L' on amixer set 'HPO R' on amixer set 'HPOVOL L' on amixer set 'HPOVOL R' on amixer set 'HPO MIX HPVOL' on amixer set 'OUT MIXL DAC L1' on amixer set 'OUT MIXR DAC R1' on amixer set 'Stereo DAC MIXL DAC L1' on amixer set 'Stereo DAC MIXR DAC R1' on And I not familiar with electronics,I did some patch and hope this can help armbian fix 
fix-i2s1-clk.patch orangepi4-rt5651.patch orangepi4-i2s_8ch_mclk.dts
Armbian applied this patch to 'Armbian build system' and with minor tweaks,you can use it by 'Armbian build system' latest branch.

Oh,I fixed this problem spend 2 weeks,I finally heard sound from 3.5 mm jack (this jack is OMTP otherwise need keep press headphone button)
 
I see this topic,and I compair https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/sound/soc/codecs/rt5640.c and https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/sound/soc/codecs/rt5651.c,this rt5651 not enable mclk and orangepi4"s rt5651 linked i2s1,the i2s1's SCLK_I2S_8CH parent not SCLK_I2S1_8CH defult and need set alsamixer in following(also use alsactl save this alsamixer state):
amixer set 'HPO L' on amixer set 'HPO R' on amixer set 'HPOVOL L' on amixer set 'HPOVOL R' on amixer set 'HPO MIX HPVOL' on amixer set 'OUT MIXL DAC L1' on amixer set 'OUT MIXR DAC R1' on amixer set 'Stereo DAC MIXL DAC L1' on amixer set 'Stereo DAC MIXR DAC R1' on And I not familiar with electronics,I did some patch and hope this can help armbian fix 
fix-i2s1-clk.patch orangepi4-rt5651.patch orangepi4-i2s_8ch_mclk.dts
Armbian applied this patch to 'Armbian build system' and with minor tweaks,you can use it by 'Armbian build system' latest branch.

sound fixed

Oh,I fixed this problem spend 2 weeks,I finally heard sound from 3.5 mm jack (this jack is OMTP otherwise need keep press headphone button)
 
I see this topic,and I compair https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/sound/soc/codecs/rt5640.c and https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/sound/soc/codecs/rt5651.c,this rt5651 not enable mclk and orangepi4"s rt5651 linked i2s1,the i2s1's SCLK_I2S_8CH parent not SCLK_I2S1_8CH defult and need set alsamixer in following(also use alsactl save this alsamixer state):
amixer set 'HPO L' on amixer set 'HPO R' on amixer set 'HPOVOL L' on amixer set 'HPOVOL R' on amixer set 'HPO MIX HPVOL' on amixer set 'OUT MIXL DAC L1' on amixer set 'OUT MIXR DAC R1' on amixer set 'Stereo DAC MIXL DAC L1' on amixer set 'Stereo DAC MIXR DAC R1' on And I not familiar with electronics,I did some patch and hope this can help armbian fix 
fix-i2s1-clk.patch orangepi4-rt5651.patch orangepi4-i2s_8ch_mclk.dts
Armbian applied this patch to 'Armbian build system' and with minor tweaks,you can use it by 'Armbian build system' latest branch.

sound fixed