linux-kernel - [PATCH] dt-bindings: timer: sifive,clint: Fix number of interrupts

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Message-Id: <20211125152317.162958-1-geert@linux-m68k.org>
Date:   Thu, 25 Nov 2021 16:23:17 +0100
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Daniel Lezcano <daniel.lezcano@...aro.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Rob Herring <robh+dt@...nel.org>,
        Palmer Dabbelt <palmer@...belt.com>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Anup Patel <anup.patel@....com>
Cc:     linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        linux-riscv@...ts.infradead.org,
        Geert Uytterhoeven <geert@...ux-m68k.org>
Subject: [PATCH] dt-bindings: timer: sifive,clint: Fix number of interrupts

To improve human readability and enable automatic validation, the tuples
in "interrupts-extended" properties should be grouped using angle
brackets.  As the DT bindings lack an upper bound on the number of
interrupts, thus assuming one, proper grouping is currently flagged as
an error.

Fix this by adding the missing "maxItems", limiting it to 10 interrupts
(two interrupts for a system management core, and two interrupts per
core for other cores), which should be sufficient for now.

Group the tuples in the example.

Signed-off-by: Geert Uytterhoeven <geert@...ux-m68k.org>
---
 .../devicetree/bindings/timer/sifive,clint.yaml          | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/Documentation/devicetree/bindings/timer/sifive,clint.yaml b/Documentation/devicetree/bindings/timer/sifive,clint.yaml
index a35952f487426988..55bec2d059807c48 100644
--- a/Documentation/devicetree/bindings/timer/sifive,clint.yaml
+++ b/Documentation/devicetree/bindings/timer/sifive,clint.yaml
@@ -43,6 +43,7 @@ properties:
 
   interrupts-extended:
     minItems: 1
+    maxItems: 10
 
 additionalProperties: false
 
@@ -55,10 +56,10 @@ examples:
   - |
     timer@...0000 {
       compatible = "sifive,fu540-c000-clint", "sifive,clint0";
-      interrupts-extended = <&cpu1intc 3 &cpu1intc 7
-                             &cpu2intc 3 &cpu2intc 7
-                             &cpu3intc 3 &cpu3intc 7
-                             &cpu4intc 3 &cpu4intc 7>;
+      interrupts-extended = <&cpu1intc 3>, <&cpu1intc 7>,
+                            <&cpu2intc 3>, <&cpu2intc 7>,
+                            <&cpu3intc 3>, <&cpu3intc 7>,
+                            <&cpu4intc 3>, <&cpu4intc 7>;
        reg = <0x2000000 0x10000>;
     };
 ...
-- 
2.25.1