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Date:   Sun, 24 Oct 2021 09:33:02 +0800
From:   guoren@...nel.org
To:     guoren@...nel.org, anup@...infault.org, atish.patra@....com,
        maz@...nel.org, tglx@...utronix.de, palmer@...belt.com,
        heiko@...ech.de, robh@...nel.org
Cc:     linux-kernel@...r.kernel.org, linux-riscv@...ts.infradead.org,
        Guo Ren <guoren@...ux.alibaba.com>,
        Rob Herring <robh+dt@...nel.org>,
        Palmer Dabbelt <palmerdabbelt@...gle.com>
Subject: [PATCH V5 2/3] dt-bindings: update riscv plic compatible string

From: Guo Ren <guoren@...ux.alibaba.com>

Add the compatible string "thead,c900-plic" to the riscv plic
bindings to support allwinner d1 SOC which contains c906 core.

Signed-off-by: Guo Ren <guoren@...ux.alibaba.com>
Cc: Anup Patel <anup@...infault.org>
Cc: Atish Patra <atish.patra@....com>
Cc: Heiko Stuebner <heiko@...ech.de>
Cc: Rob Herring <robh@...nel.org>
Cc: Rob Herring <robh+dt@...nel.org>
Cc: Palmer Dabbelt <palmerdabbelt@...gle.com>

---

Changes since V5:
 - Add DT list
 - Fixup compatible string
 - Remove allwinner-d1 compatible
 - make dt_binding_check

Changes since V4:
 - Update description in errata style
 - Update enum suggested by Anup, Heiko, Samuel

Changes since V3:
 - Rename "c9xx" to "c900"
 - Add thead,c900-plic in the description section
---
 .../interrupt-controller/sifive,plic-1.0.0.yaml   | 15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)

diff --git a/Documentation/devicetree/bindings/interrupt-controller/sifive,plic-1.0.0.yaml b/Documentation/devicetree/bindings/interrupt-controller/sifive,plic-1.0.0.yaml
index 08d5a57ce00f..18b97bfd7954 100644
--- a/Documentation/devicetree/bindings/interrupt-controller/sifive,plic-1.0.0.yaml
+++ b/Documentation/devicetree/bindings/interrupt-controller/sifive,plic-1.0.0.yaml
@@ -35,6 +35,10 @@ description:
   contains a specific memory layout, which is documented in chapter 8 of the
   SiFive U5 Coreplex Series Manual <https://static.dev.sifive.com/U54-MC-RVCoreIP.pdf>.
 
+  The thead,c900-plic couldn't complete masked irq source which has been disabled in
+  enable register. Add thead_plic_chip which fix up c906-plic irq source completion
+  problem by unmask/mask wrapper.
+
 maintainers:
   - Sagar Kadam <sagar.kadam@...ive.com>
   - Paul Walmsley  <paul.walmsley@...ive.com>
@@ -42,11 +46,16 @@ maintainers:
 
 properties:
   compatible:
-    items:
+   oneOf:
+    - items:
       - enum:
-          - sifive,fu540-c000-plic
-          - canaan,k210-plic
+        - sifive,fu540-c000-plic
+        - canaan,k210-plic
       - const: sifive,plic-1.0.0
+    - items:
+      - enum:
+        - allwinner,sun20i-d1-plic
+      - const: thead,c900-plic
 
   reg:
     maxItems: 1
-- 
2.25.1

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