On Di, 22.09.20 15:34, Andrei Borzenkov ([email protected]) wrote: 65;6003;1c > On Tue, Sep 22, 2020 at 2:53 PM Mantas Mikulėnas <[email protected]> wrote: > > > > On Tue, Sep 22, 2020 at 1:46 PM Andrei Borzenkov <[email protected]> > > wrote: > >> > >> On Tue, Sep 22, 2020 at 1:35 PM ZhouPeng <[email protected]> wrote: > >> > > >> > Hi all, > >> > > >> > When I use Fedora image as rootfs on Xilinx PYNQ-Z2, I encountered the > >> > issue when use the /dev/ttyPS0. > >> > I think the issue is because systemd and udev on fedora can didn't > >> > detect ttyPS0 properly. Do I need to install any other package or do > >> > some special configuration? > >> > > >> > **systemd version the issue has been seen with** > >> > udevadm --version > >> > 237 > >> > systemd-udev.riscv64 237-1.0.riscv64.fc28 > >> > > >> > > >> > **Unexpected behaviour you saw** > >> > We can see ttyPS0 boots ok in the kernel boot period: > >> > [ 0.180000] console [ttyPS0] enabledat MMIO 0xe0000000 (irq = 2, > >> > base_baud = 6250000) is a xuartps > >> > [ 0.180000] console [ttyPS0] enabled > >> > > >> > But, when boot into systemd, it failed on dev ttyPS0: > >> > [ TIME ] Timed out waiting for device dev-ttyPS0.device. // **here** > >> > >> systemd only monitors for devices with "sysemd" tag. Tags are assigned > >> by udev rules. You should add rule to assign tag to ttyPS0. I have no > >> idea what it is, but something like > >> > >> ACTION!="remove", KERNEL=="ttyPS0", TAG+="systemd" > >> > >> should do it. Whether this should go upstream depends on how common > >> this device is. > > > > > > Well yes, but that should have been already covered by the existing > > upstream rules: > > > > 99-systemd.rules:12:SUBSYSTEM=="tty", > > KERNEL=="tty[a-zA-Z]*|hvc*|xvc*|hvsi*|ttysclp*|sclp_line*|3270/tty[0-9]*", > > TAG+="systemd" > > > > Are you sure ttyPS0 has the "tty" subsystem?
What does "udevadm info -a /dev/ttyPS0" output? Lennart -- Lennart Poettering, Berlin _______________________________________________ systemd-devel mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/systemd-devel
