[PATCH RFC 1/5] dt-bindings: interrupt-controller: renesas,rzg2l-irqc: Document RZ/G2UL SoC

[Prabhakar <prabhakar.csengg@xxxxxxxxx>]

From: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>

Document RZ/G2UL (R9A07G043) IRQC bindings. The RZ/G2UL IRQC block is
identical to one found on the RZ/G2L SoC. No driver changes are
required as generic compatible string "renesas,rzg2l-irqc" will be
used as a fallback.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>
---
Note, renesas,r9a07g043u-irqc is added we have slight difference's compared to RZ/Five
- G2UL IRQCHIP (hierarchical IRQ domain) -> GIC where as on RZ/Five we have PLIC (chained interrupt
domain) -> RISCV INTC
- On the RZ/Five we have additional registers for IRQC block
- On the RZ/Five we have BUS_ERR_INT which needs to be handled by IRQC
---
 .../bindings/interrupt-controller/renesas,rzg2l-irqc.yaml        | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/interrupt-controller/renesas,rzg2l-irqc.yaml b/Documentation/devicetree/bindings/interrupt-controller/renesas,rzg2l-irqc.yaml
index 33b90e975e33..8f3678a82ba4 100644
--- a/Documentation/devicetree/bindings/interrupt-controller/renesas,rzg2l-irqc.yaml
+++ b/Documentation/devicetree/bindings/interrupt-controller/renesas,rzg2l-irqc.yaml
@@ -26,6 +26,7 @@ properties:
   compatible:
     items:
       - enum:
+          - renesas,r9a07g043u-irqc   # RZ/G2UL
           - renesas,r9a07g044-irqc    # RZ/G2{L,LC}
           - renesas,r9a07g054-irqc    # RZ/V2L
       - const: renesas,rzg2l-irqc
-- 
2.25.1