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Message-ID: <20260109125128.2474156-4-prabhakar.mahadev-lad.rj@bp.renesas.com>
Date: Fri, 9 Jan 2026 12:51:27 +0000
From: Prabhakar <prabhakar.csengg@...il.com>
To: Marc Kleine-Budde <mkl@...gutronix.de>,
Vincent Mailhol <mailhol@...nel.org>,
Rob Herring <robh@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>,
Geert Uytterhoeven <geert+renesas@...der.be>,
Magnus Damm <magnus.damm@...il.com>,
linux-can@...r.kernel.org,
devicetree@...r.kernel.org
Cc: linux-renesas-soc@...r.kernel.org,
linux-kernel@...r.kernel.org,
Prabhakar <prabhakar.csengg@...il.com>,
Biju Das <biju.das.jz@...renesas.com>,
Fabrizio Castro <fabrizio.castro.jz@...esas.com>,
Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
Subject: [PATCH v3 3/4] dt-bindings: can: renesas,rcar-canfd: Document RZ/T2H and RZ/N2H SoCs
From: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
Document the CAN-FD controller used on the RZ/T2H and RZ/N2H SoCs. The
CAN-FD IP is largely compatible with the R-Car Gen4 block, but differs
in that AFLPN and CFTML are different, there is no reset line for the IP,
and it only supports two channels.
The schema already enforces reset-names only for RZ/G2L and RZ/G3E and
disallows it for all other SoCs, so only the resets property is explicitly
marked as unsupported for RZ/T2H and RZ/N2H.
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@...der.be>
---
v2->v3:
- Grouped single compatible entries into an enum.
- Updated commit message about disallowing reset-names property.
- Added Reviewed-by tag.
v1->v2:
- No changes made.
---
.../bindings/net/can/renesas,rcar-canfd.yaml | 29 +++++++++++++++++--
1 file changed, 27 insertions(+), 2 deletions(-)
diff --git a/Documentation/devicetree/bindings/net/can/renesas,rcar-canfd.yaml b/Documentation/devicetree/bindings/net/can/renesas,rcar-canfd.yaml
index fb709cfd26d7..ceb072e0a304 100644
--- a/Documentation/devicetree/bindings/net/can/renesas,rcar-canfd.yaml
+++ b/Documentation/devicetree/bindings/net/can/renesas,rcar-canfd.yaml
@@ -42,7 +42,10 @@ properties:
- renesas,r9a07g054-canfd # RZ/V2L
- const: renesas,rzg2l-canfd # RZ/G2L family
- - const: renesas,r9a09g047-canfd # RZ/G3E
+ - items:
+ - enum:
+ - renesas,r9a09g047-canfd # RZ/G3E
+ - renesas,r9a09g077-canfd # RZ/T2H
- items:
- enum:
@@ -50,6 +53,10 @@ properties:
- renesas,r9a09g057-canfd # RZ/V2H(P)
- const: renesas,r9a09g047-canfd
+ - items:
+ - const: renesas,r9a09g087-canfd # RZ/N2H
+ - const: renesas,r9a09g077-canfd
+
reg:
maxItems: 1
@@ -179,7 +186,6 @@ required:
- clocks
- clock-names
- power-domains
- - resets
- assigned-clocks
- assigned-clock-rates
- channel0
@@ -243,11 +249,30 @@ allOf:
minItems: 2
maxItems: 2
+ - if:
+ properties:
+ compatible:
+ contains:
+ const: renesas,r9a09g077-canfd
+ then:
+ properties:
+ interrupts:
+ maxItems: 8
+
+ interrupt-names:
+ maxItems: 8
+
+ resets: false
+ else:
+ required:
+ - resets
+
- if:
properties:
compatible:
contains:
enum:
+ - renesas,r9a09g077-canfd
- renesas,rcar-gen3-canfd
- renesas,rzg2l-canfd
then:
--
2.52.0
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