[RFC PATCH v1 0/2] rk3318 A95X Z2 board
jbx6244 at gmail.com
Mon Jun 22 04:01:55 EDT 2020
BUG report 1:
About phy-rockchip-inno-usb2.c and rk3318.
Goal is to use ttyUSB0 as console in combination with agetty as long as
we don't have a working HDMI signal on a DVI monitor.
Boot with rk3318 starts normal on emmc with U-boot OK. It then loads the
and initrd on SD card. Log view on ttyS2 works.
At the end of the init process extcon0 sends 2 events sortly after each
usb2 crashes if extcon0 event reports 'USB=0' and 'DCP=1'.
It looks like there's no consistant init (delay?) in the driver or hardware.
Boot only possible with busybox + initrd with no scripts that delay
(Un)plug events are unrelayable. Getty only becomes active
if usb cable connected direct to the board(without usb hub).
With systemd only a kernel log scroll, but never able to use ttyUSB0 as
mdev.conf line to catch the events:
extcon[0-9]+ root:root 666 */bin/cat /sys/class/extcon/extcon0/state
In extlinux.conf clk and pm must be ignored in the kernel command line
to prevent a crash.
video=HDMI-A-1:1280x720 at 60
Does anyone have a solution for usb2 or
was there previous discussion/info about this?
Why has rk3328.dtsi incomplete (see TRM) power-domains and qos? Does
Was rk3318 VOP+HDMI, gmac2phy tested in Linux mainline before?
Kernel log with usb2 OK:
[ 0.959594] Run /init as init process
[ 0.959937] with arguments:
[ 0.960210] /init
[ 0.960416] with environment:
[ 0.960703] HOME=/
[ 0.960917] TERM=linux
[ 0.961562] process '/bin/busybox' started with executable stack
[ 0.967474] usb 1-1: new full-speed USB device number 2 using dwc2
[ 6.785160] USB=1
[ 6.785160] USB-HOST=0
[ 6.785160] SDP=1
[ 6.785160] CDP=0
[ 6.785160] DCP=0
[ 6.785160] SLOW-CHARGER=0
[ 6.785165] USB=1
[ 6.785165] USB-HOST=0
[ 6.785165] SDP=1
[ 6.785165] CDP=0
[ 6.785165] DCP=0
[ 6.785165] SLOW-CHARGER=0
[ 13.729625] random: crng init done
[ 31.715450] vcc_host_vbus: disabling
Kernel log with usb2 crash:
[ 0.940666] Run /init as init process
[ 0.941005] with arguments:
[ 0.941280] /init
[ 0.941490] with environment:
[ 0.941781] HOME=/
[ 0.941999] TERM=linux
[ 0.942536] process '/bin/busybox' started with executable stack
[ 0.967442] usb 1-1: new full-speed USB device number 2 using dwc2
[ 7.300792] USB=0
[ 7.300792] USB-HOST=0
[ 7.300792] SDP=0
[ 7.300792] CDP=0
[ 7.300792] DCP=1
[ 7.300792] SLOW-CHARGER=0
More information about the Linux-rockchip