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From: James Hilliard <james.hilliard1@gmail.com>
To: "Andy Shevchenko" <andriy.shevchenko@linux.intel.com>,
	"Ilpo Järvinen" <ilpo.jarvinen@linux.intel.com>,
	"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
	"Jiri Slaby" <jirislaby@kernel.org>,
	"Rob Herring" <robh@kernel.org>,
	"Krzysztof Kozlowski" <krzk+dt@kernel.org>,
	"Conor Dooley" <conor+dt@kernel.org>,
	"Chen-Yu Tsai" <wens@kernel.org>,
	"Jernej Skrabec" <jernej.skrabec@gmail.com>,
	"Samuel Holland" <samuel@sholland.org>
Cc: linux-kernel@vger.kernel.org, linux-serial@vger.kernel.org,
	 devicetree@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	 linux-sunxi@lists.linux.dev,
	James Hilliard <james.hilliard1@gmail.com>
Subject: [PATCH v5 5/8] arm64: dts: allwinner: h616: describe the UART integration
Date: Thu, 29 Oct 2026 12:47:26 -0600	[thread overview]
Message-ID: <20261029-submit-h616-uart-fifo-v1-v5-5-53b433aebbf8@gmail.com> (raw)
In-Reply-To: <20261029-submit-h616-uart-fifo-v1-v5-0-53b433aebbf8@gmail.com>

Identify the H616 UART integration on each of the six controllers. The
specific compatible describes the fixed FIFO capacity, register layout
and receive-trigger mapping.

Retain snps,dw-apb-uart as the generic fallback. H618 includes this DTSI
and uses the same UART integration.

Signed-off-by: James Hilliard <james.hilliard1@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@4022000 {
 		};
 
 		uart0: serial@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@5000000 {
 		};
 
 		uart1: serial@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@5000400 {
 		};
 
 		uart2: serial@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@5000800 {
 		};
 
 		uart3: serial@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@5000c00 {
 		};
 
 		uart4: serial@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@5001000 {
 		};
 
 		uart5: serial@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



  parent reply	other threads:[~2026-10-29 18:47 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-10-29 18:47 [PATCH v5 0/8] serial: 8250_dw: describe the Allwinner H616 and A523 UART configurations James Hilliard
2026-10-29 18:47 ` [PATCH v5 1/8] serial: 8250_dw: select port setup through platform data James Hilliard
2026-10-30  9:28   ` Ilpo Järvinen
2026-10-29 18:47 ` [PATCH v5 2/8] serial: 8250: share the RX trigger conversion helper James Hilliard
2026-10-30  9:24   ` Ilpo Järvinen
2026-10-29 18:47 ` [PATCH v5 3/8] dt-bindings: serial: snps-dw-apb-uart: add Allwinner H616 James Hilliard
2026-10-29 18:47 ` [PATCH v5 4/8] serial: 8250_dw: configure the Allwinner H616 UART James Hilliard
2026-10-30  9:51   ` Ilpo Järvinen
2026-10-29 18:47 ` James Hilliard [this message]
2026-10-29 18:47 ` [PATCH v5 6/8] dt-bindings: serial: snps-dw-apb-uart: add Allwinner A523 James Hilliard
2026-10-30 10:28   ` Krzysztof Kozlowski
2026-10-29 18:47 ` [PATCH v5 7/8] serial: 8250_dw: discover Allwinner A523 FIFO depths through FCC James Hilliard
2026-10-30 10:00   ` Ilpo Järvinen
2026-10-30 10:15   ` Ilpo Järvinen
2026-10-29 18:47 ` [PATCH v5 8/8] arm64: dts: allwinner: a523: describe the UART integration James Hilliard

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