[PATCH v2 3/3] arm64: dts: allwinner: h616: identify the UART integration

James Hilliard james.hilliard1 at gmail.com
Fri Oct 23 14:19:29 PDT 2026


Use the H616 UART compatible for all six controllers so the driver can
select their fixed 256-byte FIFO configuration and register layout.
Retain the generic DesignWare compatible as a fallback for older kernels.

Signed-off-by: James Hilliard <james.hilliard1 at gmail.com>
---
 arch/arm64/boot/dts/allwinner/sun50i-h616.dtsi | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h616.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-h616.dtsi
index c6b3a3f8359a..b4b2f85726e0 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-h616.dtsi
+++ b/arch/arm64/boot/dts/allwinner/sun50i-h616.dtsi
@@ -550,7 +550,7 @@ mmc2: mmc at 4022000 {
 		};
 
 		uart0: serial at 5000000 {
-			compatible = "snps,dw-apb-uart";
+			compatible = "allwinner,sun50i-h616-uart", "snps,dw-apb-uart";
 			reg = <0x05000000 0x400>;
 			interrupts = <GIC_SPI 0 IRQ_TYPE_LEVEL_HIGH>;
 			reg-shift = <2>;
@@ -563,7 +563,7 @@ uart0: serial at 5000000 {
 		};
 
 		uart1: serial at 5000400 {
-			compatible = "snps,dw-apb-uart";
+			compatible = "allwinner,sun50i-h616-uart", "snps,dw-apb-uart";
 			reg = <0x05000400 0x400>;
 			interrupts = <GIC_SPI 1 IRQ_TYPE_LEVEL_HIGH>;
 			reg-shift = <2>;
@@ -576,7 +576,7 @@ uart1: serial at 5000400 {
 		};
 
 		uart2: serial at 5000800 {
-			compatible = "snps,dw-apb-uart";
+			compatible = "allwinner,sun50i-h616-uart", "snps,dw-apb-uart";
 			reg = <0x05000800 0x400>;
 			interrupts = <GIC_SPI 2 IRQ_TYPE_LEVEL_HIGH>;
 			reg-shift = <2>;
@@ -589,7 +589,7 @@ uart2: serial at 5000800 {
 		};
 
 		uart3: serial at 5000c00 {
-			compatible = "snps,dw-apb-uart";
+			compatible = "allwinner,sun50i-h616-uart", "snps,dw-apb-uart";
 			reg = <0x05000c00 0x400>;
 			interrupts = <GIC_SPI 3 IRQ_TYPE_LEVEL_HIGH>;
 			reg-shift = <2>;
@@ -602,7 +602,7 @@ uart3: serial at 5000c00 {
 		};
 
 		uart4: serial at 5001000 {
-			compatible = "snps,dw-apb-uart";
+			compatible = "allwinner,sun50i-h616-uart", "snps,dw-apb-uart";
 			reg = <0x05001000 0x400>;
 			interrupts = <GIC_SPI 4 IRQ_TYPE_LEVEL_HIGH>;
 			reg-shift = <2>;
@@ -615,7 +615,7 @@ uart4: serial at 5001000 {
 		};
 
 		uart5: serial at 5001400 {
-			compatible = "snps,dw-apb-uart";
+			compatible = "allwinner,sun50i-h616-uart", "snps,dw-apb-uart";
 			reg = <0x05001400 0x400>;
 			interrupts = <GIC_SPI 5 IRQ_TYPE_LEVEL_HIGH>;
 			reg-shift = <2>;

-- 
2.53.0




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