Difference between revisions of "HBW test/test"

Revision as of 07:28, 2 January 2024

Prerequisites

On Host PC

• LVDS panel's EDID config (128 bytes)
• (optional) one utility to edit EDID config
• PTN3460 Programming Guide

On RSB-3810

• i2c-tools installed

sudo apt update
sudo apt install i2c-tools

Convert EDID config to hex value

(use g070vw01v0.bin as example below)

EDIDBIN=g070vw01v0.bin
xxd -c 16 -ps $EDIDBIN | sed "s/../0x& /g; s/ *$//"

Convert hex value to i2cset command list

EDIDNEW=6
EDIDBIN=g070vw01v0.bin
SCRIPT=set_new_edid.sh

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
done > set_new_edid.sh

Add i2c command for PTN3460

run the script

flash new firmware.vfat

get and extract update_edid.tgz

tar xvf update_edid.tgz

flash u-boot env & firmware (dtb)

genio-flash mmc0boot1 firmware firmware_b

config u-boot env to ebable LVDS display

(choose 1,3,4,5 or 6 as a new EDID, use 6 as example below)
break countdown in u-boot

• Multi-display (HDMI + LVDS)

The LVDS is always major display that has nothing to do with the specified order.

setenv list_dbto "gpu-mali.dtbo video.dtbo apusys.dtbo hdmi.dtbo lvds6.dtbo"
saveenv
reset

• LVDS only

setenv list_dbto "gpu-mali.dtbo video.dtbo apusys.dtbo lvds6.dtbo"
saveenv
reset