[PATCH v2 0/3] remoteproc: Hawi CDSP support with per-PD proxy performance states

[Mukesh Ojha <mukesh.ojha@oss.qualcomm.com>]

qcom,hawi-cdsp-pas was initially grouped as a fallback to
qcom,sm8550-cdsp-pas on the hardware-level compatibility. Bringup revealed
that the NSP proxy power domain on Hawi requires a specific RPMH
performance level below what sm8550 already supports, breaking the
compatibility contract the fallback string implies.  Remove
qcom,hawi-cdsp-pas from the sm8550-cdsp-pas fallback items block, add it to
the standalone compatible enum, and extend the existing cx/mxc/nsp
power-domain constraint to cover it explicitly.

The fix is two-part: first, propagate the dev_pm_genpd_set_performance_state()
return value so the failure becomes visible instead of silently proceeding
with firmware load.  Second, introduce a per-PD performance state table
in qcom_pas_data so platforms can declare explicit RPMH levels for each
proxy domain.  Platforms that omit the table retain the existing INT_MAX
behaviour.  Hawi CDSP declares CX/MXC at TURBO and NSP at NOM, matching
the hardware requirement.

The binding and DTS are updated in tandem: qcom,hawi-cdsp-pas is made a
standalone compatible (dropped from the sm8550-cdsp-pas fallback group)
because the proxy PD behaviour diverges from sm8550, breaking the
compatibility contract the fallback string implies.

---
Changes in v2:
  - Propagating the err dev_pm_genpd_set_performance_state() as a
    separate commit.
  - Added a binding correction for hawi as it  should be
    standalone one instead of falling back to sm8550.
  - Add num_proxy_pd_performance_states count field with a WARN_ON in
    probe to catch mismatch between the array size and the actual proxy
    PD count at boot time, returning -EINVAL if they diverge.
  - [v1] https://lore.kernel.org/lkml/20260828181311.4038346-3-mukesh.ojha@oss.qualcomm.com/

Mukesh Ojha (3):
  remoteproc: qcom_q6v5_pas: propagate
    dev_pm_genpd_set_performance_state() errors
  dt-bindings: remoteproc: qcom,sm8550-pas: make qcom,hawi-cdsp-pas
    standalone
  remoteproc: qcom_q6v5_pas: add per-PD proxy performance states for
    Hawi CDSP

 .../bindings/remoteproc/qcom,sm8550-pas.yaml  |  3 +-
 drivers/remoteproc/qcom_q6v5_pas.c            | 52 ++++++++++++++++++-
 2 files changed, 53 insertions(+), 2 deletions(-)

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2.55.0