[PATCH v3 0/1] dt-bindings: remoteproc: mtk,scp: Allow multiple memory regions for MT8188

[Arnab Layek <arnab.layek@mediatek.com>]

This series updates the mtk,scp dt-binding schema to support MT8188's
requirement for two memory regions while maintaining backward
compatibility for other MediaTek SoCs.

The schema uses a permissive base with restrictive conditionals:
1) Base schema allows all devices minItems: 1, maxItems: 2
2) Non-MT8188 devices (mt8183, mt8186, mt8192, mt8195, mt8195-dual) are
   restricted to maxItems: 1, overriding the base
3) MT8188 devices (mt8188, mt8188-dual) set minItems: 1 with item
   descriptions, inheriting maxItems: 2 from base, making the second
   L1TCM region optional

Changes in v3:
- Removed "Tested on..." line per Krzysztof's feedback (bindings cannot be tested)
- Added minItems: 1 to MT8188 conditional to make L1TCM region truly optional
- Clarified commit message to specifically reference mediatek,jpeg-encoder.yaml pattern
- Restructured schema per Conor's feedback: base allows maxItems: 2, conditionals restrict
- Added explicit restrictions for non-MT8188 devices (maxItems: 1)
- Added technical explanation of the permissive base + restrictive conditionals pattern

Changes in v2:
- Added conditional schema for MT8188 to allow 1-2 memory regions
- Added descriptions for each memory region
- Did not work: base maxItems: 1 conflicted with conditional trying to allow 2

Arnab Layek (1):
  dt-bindings: remoteproc: mtk,scp: Allow multiple memory regions for
    MT8188

 .../bindings/remoteproc/mtk,scp.yaml          | 45 ++++++++++++++++++-
 1 file changed, 43 insertions(+), 2 deletions(-)

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2.45.2