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From: Wolfram Sang <wsa+renesas@sang-engineering.com>
To: linux-renesas-soc@vger.kernel.org
Cc: Wolfram Sang <wsa+renesas@sang-engineering.com>,
	Geert Uytterhoeven <geert+renesas@glider.be>,
	Magnus Damm <magnus.damm@gmail.com>,
	Rob Herring <robh@kernel.org>,
	Krzysztof Kozlowski <krzk+dt@kernel.org>,
	Conor Dooley <conor+dt@kernel.org>,
	devicetree@vger.kernel.org
Subject: [PATCH] ARM: dts: renesas: r9a06g032: use proper ordering for UART DMA channels
Date: Mon, 17 Mar 2025 13:03:55 +0100	[thread overview]
Message-ID: <20250317120356.67609-2-wsa+renesas@sang-engineering.com> (raw)

Commit ec956e2c6f4e ("dt-bindings: serial: snps-dw-apb-uart: Switch
dma-names order") enforces "tx", "rx" ordering of DMA channels. Adhere
to it to let the dtbs_check pass it. There is no ABI breakage because
the Linux driver never expected a certain ordering and no other usage is
known.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
---
 arch/arm/boot/dts/renesas/r9a06g032.dtsi | 20 ++++++++++----------
 1 file changed, 10 insertions(+), 10 deletions(-)

diff --git a/arch/arm/boot/dts/renesas/r9a06g032.dtsi b/arch/arm/boot/dts/renesas/r9a06g032.dtsi
index 7548291c8d7e..87e03446fb4d 100644
--- a/arch/arm/boot/dts/renesas/r9a06g032.dtsi
+++ b/arch/arm/boot/dts/renesas/r9a06g032.dtsi
@@ -211,8 +211,8 @@ uart3: serial@50000000 {
 			reg-io-width = <4>;
 			clocks = <&sysctrl R9A06G032_CLK_UART3>, <&sysctrl R9A06G032_HCLK_UART3>;
 			clock-names = "baudclk", "apb_pclk";
-			dmas = <&dmamux 0 0 0 0 0 1>, <&dmamux 1 0 0 0 1 1>;
-			dma-names = "rx", "tx";
+			dmas = <&dmamux 1 0 0 0 1 1>, <&dmamux 0 0 0 0 0 1>;
+			dma-names = "tx", "rx";
 			status = "disabled";
 		};
 
@@ -224,8 +224,8 @@ uart4: serial@50001000 {
 			reg-io-width = <4>;
 			clocks = <&sysctrl R9A06G032_CLK_UART4>, <&sysctrl R9A06G032_HCLK_UART4>;
 			clock-names = "baudclk", "apb_pclk";
-			dmas = <&dmamux 2 0 0 0 2 1>, <&dmamux 3 0 0 0 3 1>;
-			dma-names = "rx", "tx";
+			dmas = <&dmamux 3 0 0 0 3 1>, <&dmamux 2 0 0 0 2 1>;
+			dma-names = "tx", "rx";
 			status = "disabled";
 		};
 
@@ -237,8 +237,8 @@ uart5: serial@50002000 {
 			reg-io-width = <4>;
 			clocks = <&sysctrl R9A06G032_CLK_UART5>, <&sysctrl R9A06G032_HCLK_UART5>;
 			clock-names = "baudclk", "apb_pclk";
-			dmas = <&dmamux 4 0 0 0 4 1>, <&dmamux 5 0 0 0 5 1>;
-			dma-names = "rx", "tx";
+			dmas = <&dmamux 5 0 0 0 5 1>, <&dmamux 4 0 0 0 4 1>;
+			dma-names = "tx", "rx";
 			status = "disabled";
 		};
 
@@ -250,8 +250,8 @@ uart6: serial@50003000 {
 			reg-io-width = <4>;
 			clocks = <&sysctrl R9A06G032_CLK_UART6>, <&sysctrl R9A06G032_HCLK_UART6>;
 			clock-names = "baudclk", "apb_pclk";
-			dmas = <&dmamux 6 0 0 0 6 1>, <&dmamux 7 0 0 0 7 1>;
-			dma-names = "rx", "tx";
+			dmas = <&dmamux 7 0 0 0 7 1>, <&dmamux 6 0 0 0 6 1>;
+			dma-names = "tx", "rx";
 			status = "disabled";
 		};
 
@@ -263,8 +263,8 @@ uart7: serial@50004000 {
 			reg-io-width = <4>;
 			clocks = <&sysctrl R9A06G032_CLK_UART7>, <&sysctrl R9A06G032_HCLK_UART7>;
 			clock-names = "baudclk", "apb_pclk";
-			dmas = <&dmamux 4 0 0 0 20 1>, <&dmamux 5 0 0 0 21 1>;
-			dma-names = "rx", "tx";
+			dmas = <&dmamux 5 0 0 0 21 1>, <&dmamux 4 0 0 0 20 1>;
+			dma-names = "tx", "rx";
 			status = "disabled";
 		};
 
-- 
2.47.2


             reply	other threads:[~2025-03-17 12:04 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-03-17 12:03 Wolfram Sang [this message]
2025-03-17 13:09 ` [PATCH] ARM: dts: renesas: r9a06g032: use proper ordering for UART DMA channels Geert Uytterhoeven
2025-03-17 15:58   ` Wolfram Sang

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