On 4/22/26 1:53 AM, Hari Prasath via lists.yoctoproject.org wrote:
On 22/04/26 11:52 am, Yogesh Hegde via lists.yoctoproject.org wrote:
The am62lxx-evm board only has ttyS0 available. The k3 default
SERIAL_CONSOLES inherited includes ttyS2, which causes
systemd to wait indefinitely for a console that never appears,
significantly increasing boot time and degrading user experience.
Override SERIAL_CONSOLES to specify only ttyS0, allowing the boot
process to proceed normally without waiting for unavailable consoles.
Signed-off-by: Yogesh Hegde <[email protected]>
Assuming this is only an am62lxx-evm only constraint and not at a SoC level,
this override in machine conf looks good to me.
AM62L does not have ttyS2, so this is needed for all AM62L based boards.
So this might be good to move to include/am62lxx.inc.
Andrew
Reviewed-by: Hari Prasath Gujulan Elango <[email protected]>
---
Boot time is increased from 33s to 2m18s.
Boot time is measured from power on to TI LVGL demo
running on HDMI Display.
Logs:
root@am62lxx-evm:~# systemd-analyze critical-chain ti-lvgl-demo.service
The time when unit became active or started is printed after the "@" character.
The time the unit took to start is printed after the "+" character.
ti-lvgl-demo.service @1min 32.588s
`-multi-user.target @1min 32.577s
`-getty.target @1min 32.575s
`[email protected] @13.002s
`-systemd-user-sessions.service @10.847s +660ms
`-network.target @10.582s
`-systemd-networkd.service @8.748s +1.799s
`-network-pre.target @8.735s
`-iptables.service @7.477s +920ms
`-basic.target @7.363s
`-dbus-broker.service @6.661s +466ms
`-dbus.socket @6.310s +434us
`-sysinit.target @6.263s
`-systemd-vconsole-setup.service @18.198s +391ms
`-systemd-journald.socket @2.781s +335us
`-system.slice @1.282s
`--.slice @1.282s
From the time analysis log, `getty.target` takes 1min 32 secs to bootup due to
[email protected] failed. This service fails because there is no
hardware associated with ttyS2.
---
meta-ti-bsp/conf/machine/am62lxx-evm.conf | 2 ++
1 file changed, 2 insertions(+)
diff --git a/meta-ti-bsp/conf/machine/am62lxx-evm.conf
b/meta-ti-bsp/conf/machine/am62lxx-evm.conf
index 677d6955..edfb4057 100644
--- a/meta-ti-bsp/conf/machine/am62lxx-evm.conf
+++ b/meta-ti-bsp/conf/machine/am62lxx-evm.conf
@@ -4,6 +4,8 @@
require conf/machine/include/am62lxx.inc
+SERIAL_CONSOLES = "115200;ttyS0"
+
IMAGE_FSTYPES += "ubifs ubi"
MKUBIFS_ARGS ?= "-F -m 4096 -e 258048 -c 12000"
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