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xe5700 / kvmd-armbian

KVMD For Armbian Install Script
GNU General Public License v2.0
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How to modify dtb for phicomm n1? #11

Closed JasonChen89 closed 1 year ago

JasonChen89 commented 1 year ago

Hello, I have a phicomm n1 box. Current I had installed armbian(bullseye). The kernel of it supports otg. But I don't know how to modify dtb file to support otg feature. Could you provide the dtb or dts file of phicomm n1? Thanks!

root@amlogic:/boot# grep -i otg config-5.4.108-flippy-56+o CONFIG_USB_OTG=y

CONFIG_USB_OTG_WHITELIST is not set

CONFIG_USB_OTG_BLACKLIST_HUB is not set

CONFIG_USB_OTG_FSM=m CONFIG_USB_FOTG210_HCD=m CONFIG_USB_FOTG210_UDC=m

root@amlogic:~# cat /etc/os-release PRETTY_NAME="Debian GNU/Linux 11 (bullseye)" NAME="Debian GNU/Linux" VERSION_ID="11" VERSION="11 (bullseye)" VERSION_CODENAME=bullseye ID=debian HOME_URL="https://www.debian.org/" SUPPORT_URL="https://www.debian.org/support" BUG_REPORT_URL="https://bugs.debian.org/"

xe5700 commented 1 year ago

You can change USB mode to peripheral for dtb file, looks you uses flippy armbian, its kernel enabled OTG feature , you need not to rebuild kernel. Use dtc -i dtb n1.dtb -o n1.dtc to decompile dtb file then change dtc file usb mode to peripheral then use dtc to rebuild dtb file. USB port use for to flash system image supports OTG feature.

JasonChen89 commented 1 year ago

The kernel 5.4.108 for s905d has not applied this patch. OTG function works abnormal. https://patchwork.kernel.org/project/linux-usb/cover/20200416121910.12723-1-narmstrong@baylibre.com/

After I update the kernel version to 5.15 and modify dtb file as you say, it works!