Messages in this thread | | | Subject | Re: [RFC PATCH v1 0/2] rk3318 A95X Z2 board | From | Johan Jonker <> | Date | Mon, 22 Jun 2020 10:01:55 +0200 |
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Hi,
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 kernel and initrd on SD card. Log view on ttyS2 works. At the end of the init process extcon0 sends 2 events sortly after each other. 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 event handling. (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 login.
mdev.conf line to catch the events:
extcon[0-9]+ root:root 666 */bin/cat /sys/class/extcon/extcon0/state > /dev/kmsg
In extlinux.conf clk and pm must be ignored in the kernel command line to prevent a crash.
label kernel kernel /Image fdt /rk3318-a95x-z2.dtb initrd /rootfs.cpio append console=ttyUSB0,115200n8 console=ttyS2,1500000n8 pd_ignore_unused clk_ignore_unused initcall_debug=1 debug drm.debug=0xe video=HDMI-A-1:1280x720@60 earlycon=uart8250,mmio32,0xff130000,keep swiotlb=1 kpti=0 no_console_suspend=1 consoleblank=0 rootwait
Question: 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 that work? Was rk3318 VOP+HDMI, gmac2phy tested in Linux mainline before?
Kind regards,
Johan
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
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