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Message-ID: <20260114154525.3169992-4-prabhakar.mahadev-lad.rj@bp.renesas.com>
Date: Wed, 14 Jan 2026 15:45:24 +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 v4 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.
Sync the resets and reset-names schema handling with other CAN-FD SoCs so
DT validation stays consistent and maintainable.
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
---
v3->v4:
- Dropped Reviewed-by from Geert due to below changes.
- Updated commit message.
- Moved single compatible entries into an enum and to below oneOf.
- Synced the resets/reset-names handling with other similar SoCs.
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 | 48 +++++++++++++++++--
1 file changed, 44 insertions(+), 4 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..b9d9dd7a7967 100644
--- a/Documentation/devicetree/bindings/net/can/renesas,rcar-canfd.yaml
+++ b/Documentation/devicetree/bindings/net/can/renesas,rcar-canfd.yaml
@@ -12,6 +12,10 @@ maintainers:
properties:
compatible:
oneOf:
+ - enum:
+ - renesas,r9a09g047-canfd # RZ/G3E
+ - renesas,r9a09g077-canfd # RZ/T2H
+
- items:
- enum:
- renesas,r8a774a1-canfd # RZ/G2M
@@ -42,14 +46,16 @@ properties:
- renesas,r9a07g054-canfd # RZ/V2L
- const: renesas,rzg2l-canfd # RZ/G2L family
- - const: renesas,r9a09g047-canfd # RZ/G3E
-
- items:
- enum:
- renesas,r9a09g056-canfd # RZ/V2N
- 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 +185,6 @@ required:
- clocks
- clock-names
- power-domains
- - resets
- assigned-clocks
- assigned-clock-rates
- channel0
@@ -243,11 +248,25 @@ allOf:
minItems: 2
maxItems: 2
+ - if:
+ properties:
+ compatible:
+ contains:
+ const: renesas,r9a09g077-canfd
+ then:
+ properties:
+ interrupts:
+ maxItems: 8
+
+ interrupt-names:
+ maxItems: 8
+
- if:
properties:
compatible:
contains:
enum:
+ - renesas,r9a09g077-canfd
- renesas,rcar-gen3-canfd
- renesas,rzg2l-canfd
then:
@@ -296,6 +315,16 @@ allOf:
properties:
renesas,no-can-fd: false
+ - if:
+ properties:
+ compatible:
+ contains:
+ const: renesas,r9a09g077-canfd
+ then:
+ properties:
+ resets: false
+ reset-names: false
+
- if:
properties:
compatible:
@@ -305,8 +334,19 @@ allOf:
- renesas,rzg2l-canfd
then:
required:
+ - resets
- reset-names
- else:
+
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - renesas,rcar-gen3-canfd
+ - renesas,rcar-gen4-canfd
+ then:
+ required:
+ - resets
properties:
reset-names: false
--
2.52.0
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