linux-kernel - RE: [PATCH v2 1/4] dt-bindings: timer: exynos4210-mct: describe known hardware and its interrupts

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Date:   Sun, 6 Mar 2022 22:50:10 +0530
From:   "Alim Akhtar" <alim.akhtar@...sung.com>
To:     "'Krzysztof Kozlowski'" <krzysztof.kozlowski@...onical.com>,
        "'Daniel Lezcano'" <daniel.lezcano@...aro.org>,
        "'Thomas Gleixner'" <tglx@...utronix.de>,
        "'Rob Herring'" <robh+dt@...nel.org>,
        <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-samsung-soc@...r.kernel.org>
Subject: RE: [PATCH v2 1/4] dt-bindings: timer: exynos4210-mct: describe
 known hardware and its interrupts



>-----Original Message-----
>From: Krzysztof Kozlowski [mailto:krzysztof.kozlowski@...onical.com]
>Sent: Friday, March 4, 2022 5:54 PM
>To: Daniel Lezcano <daniel.lezcano@...aro.org>; Thomas Gleixner
><tglx@...utronix.de>; Rob Herring <robh+dt@...nel.org>; Krzysztof
>Kozlowski <krzysztof.kozlowski@...onical.com>; Alim Akhtar
><alim.akhtar@...sung.com>; linux-kernel@...r.kernel.org;
>devicetree@...r.kernel.org; linux-arm-kernel@...ts.infradead.org; linux-
>samsung-soc@...r.kernel.org
>Subject: [PATCH v2 1/4] dt-bindings: timer: exynos4210-mct: describe known
>hardware and its interrupts
>
>Most of the Samsung Exynos SoCs use almost the same Multi-Core Timer
>block, so only two compatibles were used so far (for Exynos4210 and
>Exynos4412 flavors) with Exynos4210-one being used in most of the SoCs.
>However the Exynos4210 flavor actually differs by number of interrupts.
>
>Add new compatibles, maintaining backward compatibility with Exynos4210,
>and constraints for number of interrupts.  This allows to exactly match the
>Exynos MCT hardware.
>
>Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
>---

Reviewed-by: Alim Akhtar <alim.akhtar@...sung.com>


> .../timer/samsung,exynos4210-mct.yaml         | 67 ++++++++++++++++++-
> 1 file changed, 64 insertions(+), 3 deletions(-)
>
>diff --git a/Documentation/devicetree/bindings/timer/samsung,exynos4210-
>mct.yaml
>b/Documentation/devicetree/bindings/timer/samsung,exynos4210-mct.yaml
>index f11cbc7ccc14..1584944c7ac4 100644
>--- a/Documentation/devicetree/bindings/timer/samsung,exynos4210-
>mct.yaml
>+++ b/Documentation/devicetree/bindings/timer/samsung,exynos4210-
>mct.yam
>+++ l
>@@ -19,9 +19,20 @@ description: |+
>
> properties:
>   compatible:
>-    enum:
>-      - samsung,exynos4210-mct
>-      - samsung,exynos4412-mct
>+    oneOf:
>+      - enum:
>+          - samsung,exynos4210-mct
>+          - samsung,exynos4412-mct
>+      - items:
>+          - enum:
>+              - samsung,exynos3250-mct
>+              - samsung,exynos5250-mct
>+              - samsung,exynos5260-mct
>+              - samsung,exynos5420-mct
>+              - samsung,exynos5433-mct
>+              - samsung,exynos850-mct
>+              - tesla,fsd-mct
>+          - const: samsung,exynos4210-mct
>
>   clocks:
>     minItems: 2
>@@ -63,6 +74,56 @@ required:
>   - interrupts
>   - reg
>
>+allOf:
>+  - if:
>+      properties:
>+        compatible:
>+          contains:
>+            const: samsung,exynos3250-mct
>+    then:
>+      properties:
>+        interrupts:
>+          minItems: 8
>+          maxItems: 8
>+
>+  - if:
>+      properties:
>+        compatible:
>+          contains:
>+            const: samsung,exynos5250-mct
>+    then:
>+      properties:
>+        interrupts:
>+          minItems: 6
>+          maxItems: 6
>+
>+  - if:
>+      properties:
>+        compatible:
>+          contains:
>+            enum:
>+              - samsung,exynos5260-mct
>+              - samsung,exynos5420-mct
>+              - samsung,exynos5433-mct
>+              - samsung,exynos850-mct
>+    then:
>+      properties:
>+        interrupts:
>+          minItems: 12
>+          maxItems: 12
>+
>+  - if:
>+      properties:
>+        compatible:
>+          contains:
>+            enum:
>+              - tesla,fsd-mct
>+    then:
>+      properties:
>+        interrupts:
>+          minItems: 16
>+          maxItems: 16
>+
> additionalProperties: false
>
> examples:
>--
>2.32.0