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From: Ed Wildgoose <lists@wildgooses.com>
To: Rob Herring <robh@kernel.org>,
	Krzysztof Kozlowski <krzk+dt@kernel.org>,
	Conor Dooley <conor+dt@kernel.org>,
	Heiko Stuebner <heiko@sntech.de>,
	Ed Wildgoose <lists@wildgooses.com>,
	devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: [PATCH 2/2] rockchip: dts: Enable UART DMA by adding default dma-names property
Date: Thu, 18 Sep 2025 09:32:46 +0000	[thread overview]
Message-ID: <20250918093246.15623-3-lists@wildgooses.com> (raw)
In-Reply-To: <20250918093246.15623-1-lists@wildgooses.com>

Kernel appears to need a dma-names set for DMA to actually enable. Set a
default dma-names property for all UARTs defined in the board
definition: rk3566-radxa-zero-3.dtsi

This is tested on a Radxa Zero 3W (which has 5x UARTs) and removes the
warnings and enables DMA on this platform

Signed-off-by: Ed Wildgoose <lists@wildgooses.com>
---
 arch/arm64/boot/dts/rockchip/rk3566-radxa-zero-3.dtsi | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk3566-radxa-zero-3.dtsi b/arch/arm64/boot/dts/rockchip/rk3566-radxa-zero-3.dtsi
index e644bfc9c..fc26a4a52 100644
--- a/arch/arm64/boot/dts/rockchip/rk3566-radxa-zero-3.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3566-radxa-zero-3.dtsi
@@ -488,21 +488,29 @@ &tsadc {
 	status = "okay";
 };
 
+&uart1 {
+	dma-names = "tx", "rx";
+};
+
 &uart2 {
+	dma-names = "tx", "rx";
 	status = "okay";
 };
 
 &uart4{
+	dma-names = "tx", "rx";
 	pinctrl-names = "default";
 	pinctrl-0 = <&uart4m1_xfer>;
 };
 
 &uart5 {
+	dma-names = "tx", "rx";
 	pinctrl-names = "default";
 	pinctrl-0 = <&uart5m1_xfer>;
 };
 
 &uart9 {
+	dma-names = "tx", "rx";
 	pinctrl-names = "default";
 	pinctrl-0 = <&uart9m1_xfer>;
 };
-- 
2.49.0


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  parent reply	other threads:[~2025-09-18  9:33 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-09-17 11:49 [PATCH 0/2] arm64: dts: rockchip: fix dma and pinctrl defs Ed Wildgoose
2025-09-17 11:49 ` [PATCH 1/2] arm64: dts: rockchip: correct uart mux for Radxa ZERO 3 Ed Wildgoose
2025-09-18  4:53   ` FUKAUMI Naoki
2025-09-18 15:23     ` Ed W
2025-09-18 16:18       ` [PATCH 1/2] arm64: dts: rockchip: correct uart mux for Radxa ZERO3 Heiko Stübner
2025-09-18 23:57         ` FUKAUMI Naoki
2025-09-19  9:28           ` Ed W
2025-09-19 10:17           ` Heiko Stübner
2025-09-19 10:21             ` FUKAUMI Naoki
2025-09-19  0:13       ` [PATCH 1/2] arm64: dts: rockchip: correct uart mux for Radxa ZERO 3 FUKAUMI Naoki
2025-09-20  8:14   ` Jonas Karlman
2025-09-17 11:49 ` [PATCH 2/2] rockchip: dts: Enable UART DMA by adding default dma-names property Ed Wildgoose
2025-09-17 12:22   ` Dragan Simic
2025-09-17 14:25     ` Heiko Stübner
2025-09-18  9:32 ` [PATCH 0/2] arm64: dts: rockchip: fix dma and pinctrl defs v2 Ed Wildgoose
2025-09-18  9:32   ` [PATCH 1/2] arm64: dts: rockchip: correct uart mux for Radxa ZERO 3 Ed Wildgoose
2025-09-18  9:32   ` Ed Wildgoose [this message]
2025-09-18 16:22     ` [PATCH 2/2] rockchip: dts: Enable UART DMA by adding default dma-names property Heiko Stübner
2025-09-18 16:20   ` [PATCH 0/2] arm64: dts: rockchip: fix dma and pinctrl defs v2 Heiko Stübner

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