tree fad930a4aace45f7ede1a985b64cc55865f832d5
parent 4975941451da1d66a56e2cfe47ec7c6e9b8a4839
author Asmitha Karunanithi <asmitk01@in.ibm.com> 1728381284 -0500
committer Adriana Kobylak <anoo@us.ibm.com> 1730835835 +0000

meta-ibm/system1: Add pch-standby service

During the boot process to the BMC Ready state, system1 initiates the
PCH standby power sequence concurrently. The standby power sequence may
not fully complete until the BMC reaches the "Ready" state, as there is
no strict interlock between them.
If the system is powered on after the BMC is Ready, but the PCH standby
is still incomplete, it can lead to boot failure.

This commit introduces a new service that waits for the PCH standby
power sequence to finish by polling the corresponding GPIO pin. This
establishes a hard interlock, ensuring the PCH standby sequence is
complete before the BMC reaches the Ready state.

Change-Id: I7e8a8771c106057cc13baa88a13638ea5289ab7d
Signed-off-by: Asmitha Karunanithi <asmitk01@in.ibm.com>