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[V7,0/5] Add EPSS L3 provider support on SA8775P SoC

Message ID 20250111161429.51-1-quic_rlaggysh@quicinc.com
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Series Add EPSS L3 provider support on SA8775P SoC | expand

Message

Raviteja Laggyshetty Jan. 11, 2025, 4:14 p.m. UTC 
Add Epoch Subsystem (EPSS) L3 provider support on SA8775P SoCs.

Current interconnect framework is based on static IDs for creating node
and registering with framework. This becomes a limitation for topologies
where there are multiple instances of same interconnect provider. Add
icc_node_create_alloc_id() API to create icc node with dynamic id, this
will help to overcome the dependency on static IDs.

Change since v6:
 - Added icc_node_create_alloc_id() API to dynamically allocate ID while 
   creating the node. Replaced the IDA (ID allocator) with
   icc_node_create_alloc_id() API to allocate node IDs dynamically.
 - Removed qcom,epss-l3-perf generic compatible as per the comment.
 - Added L3 ICC handles for CPU0 and CPU4 in DT, as per Bjorn comment.
   Link to comment:
   https://lore.kernel.org/lkml/ww3t3tu7p36qzlhcetaxif2xzrpgslydmuqo3fqvisbuar4bjh@qc2u43dck3qi/

Change since v5:
 - Reused qcom,sm8250-epss-l3 compatible for sa8775p SoC.
 - Rearranged the patches, moved dt changes to end of series.
 - Updated the commit text.

Changes since v4:
 - Added generic compatible "qcom,epss-l3-perf" and split the driver
   changes accordingly.

Changes since v3:
 - Removed epss-l3-perf generic compatible changes. These will be posted
   as separate patch until then SoC specific compatible will be used for
   probing.

Changes since v2:
 - Updated the commit text to reflect the reason for code change.
 - Added SoC-specific and generic compatible to driver match table.

Changes since v1:
 - Removed the usage of static IDs and implemented dynamic ID assignment
   for icc nodes using IDA.
 - Removed separate compatibles for cl0 and cl1. Both cl0 and cl1
   devices use the same compatible.
 - Added new generic compatible for epss-l3-perf.

Jagadeesh Kona (1):
  arm64: dts: qcom: sa8775p: Add CPU OPP tables to scale DDR/L3

Raviteja Laggyshetty (4):
  interconnect: core: Add dynamic id allocation support
  interconnect: qcom: Add multidev EPSS L3 support
  dt-bindings: interconnect: Add EPSS L3 compatible for SA8775P
  arm64: dts: qcom: sa8775p: add EPSS l3 interconnect provider

 .../bindings/interconnect/qcom,osm-l3.yaml    |   1 +
 arch/arm64/boot/dts/qcom/sa8775p.dtsi         | 229 ++++++++++++++++++
 drivers/interconnect/core.c                   |  32 +++
 drivers/interconnect/qcom/osm-l3.c            |  91 +++++--
 include/linux/interconnect-provider.h         |   6 +
 5 files changed, 335 insertions(+), 24 deletions(-)