linux-kernel - [PATCH v2 06/10] riscv: dts: allwinner: d1: Switch dma-names order for snps,dw-apb-uart nodes

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Message-Id: <20230321215624.78383-7-cristian.ciocaltea@collabora.com>
Date:   Tue, 21 Mar 2023 23:56:20 +0200
From:   Cristian Ciocaltea <cristian.ciocaltea@...labora.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Chen-Yu Tsai <wens@...e.org>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        Samuel Holland <samuel@...lland.org>,
        Heiko Stuebner <heiko@...ech.de>,
        Conor Dooley <conor@...nel.org>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Nicolas Frattaroli <frattaroli.nicolas@...il.com>
Cc:     linux-serial@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-sunxi@...ts.linux.dev, linux-rockchip@...ts.infradead.org,
        linux-riscv@...ts.infradead.org, kernel@...labora.com
Subject: [PATCH v2 06/10] riscv: dts: allwinner: d1: Switch dma-names order for snps,dw-apb-uart nodes

Commit 370f696e4474 ("dt-bindings: serial: snps-dw-apb-uart: add dma &
dma-names properties") documented dma-names property to handle Allwinner
D1 dtbs_check warnings, but relies on the rx->tx ordering, which is the
reverse of what a bunch of different boards expect.

The initial proposed solution was to allow a flexible dma-names order in
the binding, due to potential ABI breakage concerns after fixing the DTS
files. But luckily the Allwinner boards are not affected, since they are
using a shared DMA channel for rx and tx.

Hence, the first step in fixing the inconsistency was to change
dma-names order in the binding to tx->rx.

Do the same for the snps,dw-apb-uart nodes in the DTS file.

Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@...labora.com>
---
 arch/riscv/boot/dts/allwinner/sunxi-d1s-t113.dtsi | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/arch/riscv/boot/dts/allwinner/sunxi-d1s-t113.dtsi b/arch/riscv/boot/dts/allwinner/sunxi-d1s-t113.dtsi
index 951810d46307..922e8e0e2c09 100644
--- a/arch/riscv/boot/dts/allwinner/sunxi-d1s-t113.dtsi
+++ b/arch/riscv/boot/dts/allwinner/sunxi-d1s-t113.dtsi
@@ -211,7 +211,7 @@ uart0: serial@...0000 {
 			clocks = <&ccu CLK_BUS_UART0>;
 			resets = <&ccu RST_BUS_UART0>;
 			dmas = <&dma 14>, <&dma 14>;
-			dma-names = "rx", "tx";
+			dma-names = "tx", "rx";
 			status = "disabled";
 		};
 
@@ -224,7 +224,7 @@ uart1: serial@...0400 {
 			clocks = <&ccu CLK_BUS_UART1>;
 			resets = <&ccu RST_BUS_UART1>;
 			dmas = <&dma 15>, <&dma 15>;
-			dma-names = "rx", "tx";
+			dma-names = "tx", "rx";
 			status = "disabled";
 		};
 
@@ -237,7 +237,7 @@ uart2: serial@...0800 {
 			clocks = <&ccu CLK_BUS_UART2>;
 			resets = <&ccu RST_BUS_UART2>;
 			dmas = <&dma 16>, <&dma 16>;
-			dma-names = "rx", "tx";
+			dma-names = "tx", "rx";
 			status = "disabled";
 		};
 
@@ -250,7 +250,7 @@ uart3: serial@...0c00 {
 			clocks = <&ccu CLK_BUS_UART3>;
 			resets = <&ccu RST_BUS_UART3>;
 			dmas = <&dma 17>, <&dma 17>;
-			dma-names = "rx", "tx";
+			dma-names = "tx", "rx";
 			status = "disabled";
 		};
 
@@ -263,7 +263,7 @@ uart4: serial@...1000 {
 			clocks = <&ccu CLK_BUS_UART4>;
 			resets = <&ccu RST_BUS_UART4>;
 			dmas = <&dma 18>, <&dma 18>;
-			dma-names = "rx", "tx";
+			dma-names = "tx", "rx";
 			status = "disabled";
 		};
 
@@ -276,7 +276,7 @@ uart5: serial@...1400 {
 			clocks = <&ccu CLK_BUS_UART5>;
 			resets = <&ccu RST_BUS_UART5>;
 			dmas = <&dma 19>, <&dma 19>;
-			dma-names = "rx", "tx";
+			dma-names = "tx", "rx";
 			status = "disabled";
 		};
 
-- 
2.40.0