Difference between revisions of "How to Config Multi-Display for RK3399 RSB4710"
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+ | === Introductory === | ||
+ | <div>ROM-5780 surport 4 display ports : eDP、LVDS(mipi to LVDS)、HDMI、DP (DP to HDMI). Only two ports work at the same time .</div> <div>You can config Multi-Display to eDP + HDMI 、eDP + LVDS、LVDS + HDMI 、eDP + DP、LVDS + DP、HDMI + DP.</div> | ||
'''NOTE:''' | '''NOTE:''' | ||
− | + | Android distinguish the primary and the extend screen. | |
== Contents == | == Contents == |
Latest revision as of 08:57, 1 March 2023
Contents
Introductory
NOTE:
Android distinguish the primary and the extend screen.
Contents
[hide]
- 1 Enter U-boot interrupt mode
- 2 eDP + HDMI
- 3 eDP + LVDS
- 4 LVDS + HDMI
- 5 eDP + DP
- 6 LVDS + DP
- 7 HDMI + DP
- 8 Default Support Display
Enter U-boot interrupt mode
Connect device to debug port, and open debug console. See more : How_to_debug.
Press "ctrl + c" key before power up the device, until get the following information on debug console :
Hit any key to stop autoboot: 0 => <INTERRUPT> =>
Then you can input the following cammand to config Multi-Display.
eDP + HDMI
setenv prmry_screen edp-1920x1080 setenv extend_screen hdmi-default saveenv reset
or
setenv prmry_screen hdmi-default setenv extend_screen edp-1920x1080 saveenv reset
eDP + LVDS
setenv prmry_screen edp-1920x1080 setenv extend_screen lvds-g070vw01 saveenv reset
or
setenv prmry_screen lvds-g070vw01 setenv extend_screen edp-1920x1080 saveenv reset
LVDS + HDMI
setenv prmry_screen hdmi-default setenv extend_screen lvds-g070vw01 saveenv reset
or
setenv prmry_screen lvds-g070vw01 setenv extend_screen hdmi-default saveenv reset
eDP + DP
setenv prmry_screen edp-1920x1080 setenv extend_screen dp-default saveenv reset
or
setenv prmry_screen dp-default setenv extend_screen edp-1920x1080 saveenv reset
LVDS + DP
setenv prmry_screen dp-default setenv extend_screen lvds-g070vw01 saveenv reset
or
setenv prmry_screen lvds-g070vw01 setenv extend_screen dp-default saveenv reset
HDMI + DP
setenv prmry_screen hdmi-default setenv extend_screen dp-default saveenv reset
or
setenv prmry_screen dp-fefault setenv extend_screen hdmi-default saveenv reset
Default Support Display
Port | RSB4710 |
edp | edp-1920x1080 edp-1366x768 |
lvds | lvds-g070vw01 lvds-g150xgel05 lvds-g215hvn01 |
hdmi | hdmi-default |
dp | dp-default |
NOTE :
1. The name of the panel must begin with "edp-"、"lvds-" 、"hdmi-" or “dp-”.
And it can be found in "kernel/include/dt-bindings/display/screen-timing/{LCDNAME}.dtsi" like :
lvds_g070vw01: lvds-g070vw01
2. If there is no configuration, you will get default setting :
hdmi-default and dp-default as default setting.
3. Check your configuration in Terminal or debug console.
cat /proc/cmdline ... prmry_screen=hdmi-default extend_screen=dp-default
LVDS Name | Resolution |
lvds-g070vw01 | 800x480 |
lvds-g150xgel05 | 1024x768 |
lvds-g215hvn01 | 1920x1080 |
Using envtools in Debian/Android
Using envtools to setup envs in Debian/Android OS is very similar in uboot.
Take “eDP+HDMI”for example :
In uboot | In Debian/Android |
setenv prmry_screen hdmi-default | fw_setenv prmry_screen hdmi-default |
setenv extend_screen edp-1920x1080 | fw_setenv extend_screen edp-1920x1080 |
saveenv | |
reset | reboot |
Note :
The tool "fw_setenv" will save envs automatically in Debian/Android OS, so it isn't necessary to saveen manually.
查看设备当前配置:
root@linaro-alip:~# cat /proc/cmdline
storagemedia=emmc androidboot.storagemedia=emmc androidboot.mode=normal androidboot.verifiedbootstate=orange androidboot.slot_suffix= androidboot.serialno=a2fc4116ad6b2c4f rw rootwait earlycon=uart8250,mmio32,0xff180000 swiotlb=1 console=ttyS0,115200 root=PARTUUID=614e0000-0000 rootfstype=ext4 coherent_pool=1m quiet board_info=9 prmry_screen=hdmi-default extend_screen=lvds-g070vw01
root@linaro-alip:~#