[PATCH v7 09/12] dt-bindings: serial: snps-dw-apb-uart: add Allwinner A523

From: James Hilliard

Date: Tue Nov 03 2026 - 16:46:30 EST


The A523 UART integration has different FIFO depths across its controllers
and reports each controller's depth in the FIFO Clock Control register.
The receive thresholds follow the standard DesignWare FIFO-relative
mapping, while the optional-register layout differs from the generic
DesignWare integration.

Add a compatible for this integration, also used by A527 and T527, with
snps,dw-apb-uart as a fallback.

Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxxxxxxxx>
Signed-off-by: James Hilliard <james.hilliard1@xxxxxxxxx>
---
Documentation/devicetree/bindings/serial/snps-dw-apb-uart.yaml | 1 +
1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/serial/snps-dw-apb-uart.yaml b/Documentation/devicetree/bindings/serial/snps-dw-apb-uart.yaml
index fc1289073241..ea6ce99178e3 100644
--- a/Documentation/devicetree/bindings/serial/snps-dw-apb-uart.yaml
+++ b/Documentation/devicetree/bindings/serial/snps-dw-apb-uart.yaml
@@ -61,6 +61,7 @@ properties:
- items:
- enum:
- allwinner,sun50i-h616-uart
+ - allwinner,sun55i-a523-uart
- anlogic,dr1v90-uart
- brcm,bcm11351-dw-apb-uart
- brcm,bcm21664-dw-apb-uart

--
2.53.0