netdev - [PATCH net-next 27/27] dt-bindings: can: mpfs: document resets

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Message-ID: <20251126120106.154635-28-mkl@pengutronix.de>
Date: Wed, 26 Nov 2025 12:57:16 +0100
From: Marc Kleine-Budde <mkl@...gutronix.de>
To: netdev@...r.kernel.org
Cc: davem@...emloft.net,
	kuba@...nel.org,
	linux-can@...r.kernel.org,
	kernel@...gutronix.de,
	Conor Dooley <conor.dooley@...rochip.com>,
	Krzysztof Kozlowski <krzysztof.kozlowski@....qualcomm.com>,
	Marc Kleine-Budde <mkl@...gutronix.de>
Subject: [PATCH net-next 27/27] dt-bindings: can: mpfs: document resets

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

The CAN cores on Polarfire SoC both have a reset. The platform firmware
brings both cores out of reset, but the linux driver must use them
during normal operation. The resets should have been made required, but
this is one of the things that can happen when the binding is written
without driver support.

Fixes: c878d518d7b6 ("dt-bindings: can: mpfs: document the mpfs CAN controller")
Signed-off-by: Conor Dooley <conor.dooley@...rochip.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@....qualcomm.com>
Link: https://patch.msgid.link/20251121-sample-footsore-743d81772efc@spud
Signed-off-by: Marc Kleine-Budde <mkl@...gutronix.de>
---
 .../devicetree/bindings/net/can/microchip,mpfs-can.yaml      | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/can/microchip,mpfs-can.yaml b/Documentation/devicetree/bindings/net/can/microchip,mpfs-can.yaml
index 1219c5cb601f..519a11fbe972 100644
--- a/Documentation/devicetree/bindings/net/can/microchip,mpfs-can.yaml
+++ b/Documentation/devicetree/bindings/net/can/microchip,mpfs-can.yaml
@@ -32,11 +32,15 @@ properties:
       - description: AHB peripheral clock
       - description: CAN bus clock
 
+  resets:
+    maxItems: 1
+
 required:
   - compatible
   - reg
   - interrupts
   - clocks
+  - resets
 
 additionalProperties: false
 
@@ -46,6 +50,7 @@ examples:
         compatible = "microchip,mpfs-can";
         reg = <0x2010c000 0x1000>;
         clocks = <&clkcfg 17>, <&clkcfg 37>;
+        resets = <&clkcfg 17>;
         interrupt-parent = <&plic>;
         interrupts = <56>;
     };
-- 
2.51.0