linux-kernel - [PATCH v1 2/3] dt-bindings: PCI: mediatek-gen3: Add support for MT6991/MT8196

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Message-ID: <20250623120058.109036-3-angelogioacchino.delregno@collabora.com>
Date: Mon, 23 Jun 2025 14:00:57 +0200
From: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
To: jianjun.wang@...iatek.com
Cc: ryder.lee@...iatek.com,
	bhelgaas@...gle.com,
	lpieralisi@...nel.org,
	kwilczynski@...nel.org,
	manivannan.sadhasivam@...aro.org,
	robh@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org,
	matthias.bgg@...il.com,
	angelogioacchino.delregno@...labora.com,
	linux-pci@...r.kernel.org,
	linux-mediatek@...ts.infradead.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	kernel@...labora.com
Subject: [PATCH v1 2/3] dt-bindings: PCI: mediatek-gen3: Add support for MT6991/MT8196

Add compatible strings for MT8196 and MT6991 (which are fully
compatible between each other) and clock definitions.

These new SoCs don't have tl_96m and tl_32k clocks, but need
an AHB to APB bus clock and a low power clock.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
---
 .../bindings/pci/mediatek-pcie-gen3.yaml      | 35 +++++++++++++++++++
 1 file changed, 35 insertions(+)

diff --git a/Documentation/devicetree/bindings/pci/mediatek-pcie-gen3.yaml b/Documentation/devicetree/bindings/pci/mediatek-pcie-gen3.yaml
index 162406e0691a..02cddf0246ce 100644
--- a/Documentation/devicetree/bindings/pci/mediatek-pcie-gen3.yaml
+++ b/Documentation/devicetree/bindings/pci/mediatek-pcie-gen3.yaml
@@ -52,7 +52,12 @@ properties:
               - mediatek,mt8188-pcie
               - mediatek,mt8195-pcie
           - const: mediatek,mt8192-pcie
+      - items:
+          - enum:
+              - mediatek,mt6991-pcie
+          - const: mediatek,mt8196-pcie
       - const: mediatek,mt8192-pcie
+      - const: mediatek,mt8196-pcie
       - const: airoha,en7581-pcie
 
   reg:
@@ -212,6 +217,36 @@ allOf:
 
         mediatek,pbus-csr: false
 
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - mediatek,mt8196-pcie
+    then:
+      properties:
+        clocks:
+          minItems: 6
+
+        clock-names:
+          items:
+            - const: pl_250m
+            - const: tl_26m
+            - const: bus
+            - const: low_power
+            - const: peri_26m
+            - const: peri_mem
+
+        resets:
+          minItems: 1
+          maxItems: 2
+
+        reset-names:
+          minItems: 1
+          maxItems: 2
+
+        mediatek,pbus-csr: false
+
   - if:
       properties:
         compatible:
-- 
2.49.0