linux-kernel - [PATCH v2 1/4] dt-bindings: net: can: Add support for Allwinner D1 CAN controller

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Date:   Sat, 22 Jul 2023 08:15:50 +1000
From:   John Watts <contact@...kia.org>
To:     linux-sunxi@...ts.linux.dev
Cc:     Wolfgang Grandegger <wg@...ndegger.com>,
        Marc Kleine-Budde <mkl@...gutronix.de>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Chen-Yu Tsai <wens@...e.org>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        Samuel Holland <samuel@...lland.org>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>, linux-can@...r.kernel.org,
        netdev@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-riscv@...ts.infradead.org, John Watts <contact@...kia.org>
Subject: [PATCH v2 1/4] dt-bindings: net: can: Add support for Allwinner D1 CAN controller

The Allwinner D1 has two CAN controllers, both a variant of the R40
controller. Unfortunately the registers for the D1 controllers are
moved around enough to be incompatible and require a new compatible.

Introduce the "allwinner,sun20i-d1-can" compatible to support this.

Signed-off-by: John Watts <contact@...kia.org>
---
 .../bindings/net/can/allwinner,sun4i-a10-can.yaml           | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/net/can/allwinner,sun4i-a10-can.yaml b/Documentation/devicetree/bindings/net/can/allwinner,sun4i-a10-can.yaml
index 9c494957a07a..e42ea28d6ab4 100644
--- a/Documentation/devicetree/bindings/net/can/allwinner,sun4i-a10-can.yaml
+++ b/Documentation/devicetree/bindings/net/can/allwinner,sun4i-a10-can.yaml
@@ -21,6 +21,7 @@ properties:
           - const: allwinner,sun4i-a10-can
       - const: allwinner,sun4i-a10-can
       - const: allwinner,sun8i-r40-can
+      - const: allwinner,sun20i-d1-can
 
   reg:
     maxItems: 1
@@ -37,8 +38,9 @@ properties:
 if:
   properties:
     compatible:
-      contains:
-        const: allwinner,sun8i-r40-can
+      enum:
+        - allwinner,sun8i-r40-can
+        - allwinner,sun20i-d1-can
 
 then:
   required:
-- 
2.41.0