linux-kernel - [PATCH v2 3/8] riscv: dts: starfive: Mark the JH7100 as having non-coherent DMAs

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Message-Id: <20231130151932.729708-4-emil.renner.berthing@canonical.com>
Date:   Thu, 30 Nov 2023 16:19:27 +0100
From:   Emil Renner Berthing <emil.renner.berthing@...onical.com>
To:     linux-riscv@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     Emil Renner Berthing <kernel@...il.dk>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Conor Dooley <conor@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Cristian Ciocaltea <cristian.ciocaltea@...labora.com>,
        Geert Uytterhoeven <geert@...ux-m68k.org>
Subject: [PATCH v2 3/8] riscv: dts: starfive: Mark the JH7100 as having non-coherent DMAs

From: Emil Renner Berthing <kernel@...il.dk>

The StarFive JH7100 SoC has non-coherent device DMAs, so mark the
soc bus as such.

Link: https://github.com/starfive-tech/JH7100_Docs/blob/main/JH7100%20Cache%20Coherence%20V1.0.pdf
Signed-off-by: Emil Renner Berthing <kernel@...il.dk>
---
 arch/riscv/boot/dts/starfive/jh7100.dtsi | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/riscv/boot/dts/starfive/jh7100.dtsi b/arch/riscv/boot/dts/starfive/jh7100.dtsi
index a40a8544b860..7c1009428c1f 100644
--- a/arch/riscv/boot/dts/starfive/jh7100.dtsi
+++ b/arch/riscv/boot/dts/starfive/jh7100.dtsi
@@ -144,6 +144,7 @@ soc {
 		interrupt-parent = <&plic>;
 		#address-cells = <2>;
 		#size-cells = <2>;
+		dma-noncoherent;
 		ranges;
 
 		clint: clint@...0000 {
-- 
2.40.1