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Date:   Wed, 17 Aug 2022 21:12:10 +0100
From:   Conor Dooley <mail@...chuod.ie>
To:     Thomas Gleixner <tglx@...utronix.de>,
        Marc Zyngier <maz@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Palmer Dabbelt <palmer@...belt.com>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Albert Ou <aou@...s.berkeley.edu>
Cc:     Daniel Lezcano <daniel.lezcano@...aro.org>,
        Anup Patel <anup@...infault.org>,
        Conor Dooley <conor.dooley@...rochip.com>,
        Guo Ren <guoren@...nel.org>,
        Sagar Kadam <sagar.kadam@...ive.com>,
        Jessica Clarke <jrtc27@...c27.com>,
        Andrew Jones <ajones@...tanamicro.com>,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        linux-riscv@...ts.infradead.org, qemu-riscv@...gnu.org,
        Rob Herring <robh@...nel.org>
Subject: [PATCH v3 1/4] dt-bindings: timer: sifive,clint: add legacy riscv compatible

From: Conor Dooley <conor.dooley@...rochip.com>

While "real" hardware might not use the compatible string "riscv,clint0"
it is present in the driver & QEMU uses it for automatically generated
virt machine dtbs. To avoid dt-validate problems with QEMU produced
dtbs, such as the following, add it to the binding.

riscv-virt.dtb: clint@...0000: compatible:0: 'sifive,clint0' is not one of ['sifive,fu540-c000-clint', 'starfive,jh7100-clint', 'canaan,k210-clint']

Reported-by: Rob Herring <robh@...nel.org>
Link: https://lore.kernel.org/linux-riscv/20220803170552.GA2250266-robh@kernel.org/
Signed-off-by: Conor Dooley <conor.dooley@...rochip.com>
---
 .../bindings/timer/sifive,clint.yaml           | 18 ++++++++++++------
 1 file changed, 12 insertions(+), 6 deletions(-)

diff --git a/Documentation/devicetree/bindings/timer/sifive,clint.yaml b/Documentation/devicetree/bindings/timer/sifive,clint.yaml
index e64f46339079..bbad24165837 100644
--- a/Documentation/devicetree/bindings/timer/sifive,clint.yaml
+++ b/Documentation/devicetree/bindings/timer/sifive,clint.yaml
@@ -22,12 +22,18 @@ description:
 
 properties:
   compatible:
-    items:
-      - enum:
-          - sifive,fu540-c000-clint
-          - starfive,jh7100-clint
-          - canaan,k210-clint
-      - const: sifive,clint0
+    oneOf:
+      - items:
+          - enum:
+              - sifive,fu540-c000-clint
+              - starfive,jh7100-clint
+              - canaan,k210-clint
+          - const: sifive,clint0
+      - items:
+          - const: sifive,clint0
+          - const: riscv,clint0
+        deprecated: true
+        description: For the QEMU virt machine only
 
     description:
       Should be "<vendor>,<chip>-clint" and "sifive,clint<version>".
-- 
2.37.1

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