remoteproc: qcom: pas: Add late attach support for subsystems

Subsystems can be brought out of reset by entities such as bootloaders.
As the irq enablement could be later than subsystem bring up, the state
of subsystem should be checked by reading SMP2P bits.

A new qcom_pas_attach() function is introduced. if crash state is detected
for the subsystem, rproc_report_crash() is called. If the ready state is
detected meanwhile stop state is not detected, it will be marked as
"attached", otherwise it could be the early boot feature is not supported
by other entities or it has already been stopped. In above cases, the
state will be marked as RPROC_OFFLINE so that the PAS driver can load the
firmware and start the remoteproc.

Co-developed-by: Gokul Krishna Krishnakumar <gokul.krishnakumar@oss.qualcomm.com>
Signed-off-by: Gokul Krishna Krishnakumar <gokul.krishnakumar@oss.qualcomm.com>
Tested-by: Shawn Guo <shengchao.guo@oss.qualcomm.com>
Signed-off-by: Jingyi Wang <jingyi.wang@oss.qualcomm.com>
Tested-by: Mukesh Ojha <mukesh.ojha@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20260623-knp-soccp-v7-5-1ec7bb5c9fec@oss.qualcomm.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>

0 files changed, 0 insertions, 0 deletions