[PATCH v4 3/4] dt-bindings: can: renesas,rcar-canfd: Document RZ/T2H and RZ/N2H SoCs
From: Prabhakar <prabhakar.csengg@gmail.com>
Date: 2026-01-14 15:45:33
Also in:
linux-can, linux-renesas-soc, lkml
Subsystem:
can network drivers, open firmware and flattened device tree bindings, the rest · Maintainers:
Marc Kleine-Budde, Vincent Mailhol, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.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@bp.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