Difference between revisions of "HBW test/test"
From ESS-WIKI
(→config u-boot env to ebable LVDS display) |
(→set corresponding display dtbo in U-BOot) |
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</syntaxhighlight> | </syntaxhighlight> | ||
| − | == set | + | == set matched device tree overlay (dtbo) in U-Boot == |
=== On RSB-3810 (U-Boot) === | === On RSB-3810 (U-Boot) === | ||
Press any key to stop auto boot | Press any key to stop auto boot | ||
| − | |||
* Multi-display (HDMI + LVDS) | * Multi-display (HDMI + LVDS) | ||
: The LVDS is always major display that has nothing to do with the specified order. | : The LVDS is always major display that has nothing to do with the specified order. | ||
Revision as of 08:38, 2 January 2024
Prerequisites
- PTN3460 Programming Guide
On Host PC
- LVDS panel's EDID config (128 bytes)
- (optional) one utility to edit EDID config
On RSB-3810 (Ubuntu)
- i2c-tools installed
sudo apt update
sudo apt install i2c-tools
(use EDID 6 and LVDS panel, G070VW01V0, as example below)
Convert EDID config to shell script
On RSB-3810 (Ubuntu)
EDIDNEW=6 # set EDID
EDIDBIN=g070vw01v0.bin
SCRIPT=~/set_new_edid.sh
REG81=$(printf "0x%02x" 0) # Please refer to the PTN3460 Programming Guide to set correct value
REG84=$(printf "0x%02x" $((2*EDIDNEW + 1)))
REG85=$(printf "0x%02x" $EDIDNEW)
echo -e "REG81:$REG81\nREG84:$REG84\nREG85:$REG85\n"
cat << EOT > $SCRIPT
#!/bin/bash
i2cset -f -y 2 0x20 0x85 $REG85 b
$(
xxd -c 16 -ps $EDIDBIN |
sed "s/../0x& /g; s/ *$//" |
for ADDR in `seq 0x00 0x10 0x70`; do
read
echo i2cset -f -y 2 0x20 `printf "0x%02x" $ADDR` $REPLY i
done
)
i2cset -f -y 2 0x20 0x81 $REG81 b
i2cset -f -y 2 0x20 0x84 $REG84 b
i2cset -f -y 2 0x20 0xe8 0x01 0x78 0x45 0x56 i
EOT
chmod +x $SCRIPT
run the script and reboot
sudo $SCRIPT
sudo reboot
set matched device tree overlay (dtbo) in U-Boot
On RSB-3810 (U-Boot)
Press any key to stop auto boot
- Multi-display (HDMI + LVDS)
- The LVDS is always major display that has nothing to do with the specified order.
setenv DISPLAY hdmi.dtbo lvds6.dtbo
saveenv
reset
- LVDS only
setenv DISPLAY lvds6.dtbo
saveenv
reset