linux-kernel - [PATCH 03/11] dt-bindings: reset: mobileye,eyeq5-reset: add EyeQ6L and EyeQ6H

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Message-Id: <20240410-mbly-olb-v1-3-335e496d7be3@bootlin.com>
Date: Wed, 10 Apr 2024 19:12:32 +0200
From: Théo Lebrun <theo.lebrun@...tlin.com>
To: Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>, 
 Conor Dooley <conor+dt@...nel.org>, 
 Michael Turquette <mturquette@...libre.com>, 
 Stephen Boyd <sboyd@...nel.org>, Philipp Zabel <p.zabel@...gutronix.de>, 
 Linus Walleij <linus.walleij@...aro.org>
Cc: linux-mips@...r.kernel.org, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, linux-clk@...r.kernel.org, 
 linux-gpio@...r.kernel.org, 
 Vladimir Kondratiev <vladimir.kondratiev@...ileye.com>, 
 Gregory CLEMENT <gregory.clement@...tlin.com>, 
 Thomas Petazzoni <thomas.petazzoni@...tlin.com>, 
 Tawfik Bayouk <tawfik.bayouk@...ileye.com>, 
 Théo Lebrun <theo.lebrun@...tlin.com>
Subject: [PATCH 03/11] dt-bindings: reset: mobileye,eyeq5-reset: add EyeQ6L
 and EyeQ6H

Add bindings for EyeQ6L and EyeQ6H reset controllers.

Some controllers host a single domain, meaning a single cell is enough.
We do not enforce reg-names for such nodes.

Signed-off-by: Théo Lebrun <theo.lebrun@...tlin.com>
---
 .../bindings/reset/mobileye,eyeq5-reset.yaml       | 88 ++++++++++++++++++----
 MAINTAINERS                                        |  1 +
 2 files changed, 74 insertions(+), 15 deletions(-)

diff --git a/Documentation/devicetree/bindings/reset/mobileye,eyeq5-reset.yaml b/Documentation/devicetree/bindings/reset/mobileye,eyeq5-reset.yaml
index 062b4518347b..799bcf15bed9 100644
--- a/Documentation/devicetree/bindings/reset/mobileye,eyeq5-reset.yaml
+++ b/Documentation/devicetree/bindings/reset/mobileye,eyeq5-reset.yaml
@@ -4,11 +4,13 @@
 $id: http://devicetree.org/schemas/reset/mobileye,eyeq5-reset.yaml#
 $schema: http://devicetree.org/meta-schemas/core.yaml#
 
-title: Mobileye EyeQ5 reset controller
+title: Mobileye EyeQ reset controller
 
 description:
-  The EyeQ5 reset driver handles three reset domains. Its registers live in a
-  shared region called OLB.
+  EyeQ reset controller handles one or more reset domains. They live in shared
+  regions called OLB. EyeQ5 and EyeQ6L host one OLB each, each with one reset
+  instance. EyeQ6H hosts 7 OLB regions; three of those (west, east,
+  accelerator) host reset controllers. West and east are duplicates.
 
 maintainers:
   - Grégory Clement <gregory.clement@...tlin.com>
@@ -17,27 +19,83 @@ maintainers:
 
 properties:
   compatible:
-    const: mobileye,eyeq5-reset
+    enum:
+      - mobileye,eyeq5-reset
+      - mobileye,eyeq6l-reset
+      - mobileye,eyeq6h-we-reset
+      - mobileye,eyeq6h-acc-reset
 
-  reg:
-    maxItems: 3
+  reg: true
 
-  reg-names:
-    items:
-      - const: d0
-      - const: d1
-      - const: d2
+  reg-names: true
 
   "#reset-cells":
-    const: 2
     description:
-      The first cell is the domain (0 to 2 inclusive) and the second one is the
-      reset index inside that domain.
+      First cell is domain, second is reset index inside that domain. If
+      controller has a single domain, first cell is implicitly zero.
+    enum: [ 1, 2 ]
 
 required:
   - compatible
   - reg
-  - reg-names
   - "#reset-cells"
 
+allOf:
+  # EyeQ5 and EyeQ6L have multiple domains, other compatibles have one.
+  # Multiple domains means named resources and two reset cells.
+  # Single domain means a single unnamed resource and one reset cell.
+  - if:
+      properties:
+        compatible:
+          enum:
+            - mobileye,eyeq5-reset
+            - mobileye,eyeq6l-reset
+    then:
+      properties:
+        "#reset-cells":
+          const: 2
+      required:
+        - reg-names
+    else:
+      properties:
+        reg:
+          maxItems: 1
+        reg-names: false
+        "#reset-cells":
+          const: 1
+
+  # EyeQ5 has three domains.
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: mobileye,eyeq5-reset
+    then:
+      properties:
+        reg:
+          minItems: 3
+          maxItems: 3
+        reg-names:
+          minItems: 3
+          maxItems: 3
+          items:
+            enum: [ d0, d1, d2 ]
+
+  # EyeQ6L has two domains.
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: mobileye,eyeq6l-reset
+    then:
+      properties:
+        reg:
+          minItems: 2
+          maxItems: 2
+        reg-names:
+          minItems: 2
+          maxItems: 2
+          items:
+            enum: [ d0, d1 ]
+
 additionalProperties: false
diff --git a/MAINTAINERS b/MAINTAINERS
index f5a488331b38..42553da10be9 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -14927,6 +14927,7 @@ L:	linux-mips@...r.kernel.org
 S:	Maintained
 F:	Documentation/devicetree/bindings/clock/mobileye,eyeq5-clk.yaml
 F:	Documentation/devicetree/bindings/mips/mobileye.yaml
+F:	Documentation/devicetree/bindings/reset/mobileye,eyeq5-reset.yaml
 F:	Documentation/devicetree/bindings/soc/mobileye/
 F:	arch/mips/boot/dts/mobileye/
 F:	arch/mips/configs/eyeq5_defconfig

-- 
2.44.0