linux-kernel - [PATCH v3 1/3] riscv: dts: Add dma-channels property in dma node

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Date:   Fri, 14 Jan 2022 17:17:39 +0800
From:   Zong Li <zong.li@...ive.com>
To:     robh+dt@...nel.org, paul.walmsley@...ive.com, palmer@...belt.com,
        aou@...s.berkeley.edu, krzysztof.kozlowski@...onical.com,
        conor.dooley@...rochip.com, geert@...ux-m68k.org,
        bin.meng@...driver.com, green.wan@...ive.com, vkoul@...nel.org,
        dmaengine@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-riscv@...ts.infradead.org
Cc:     Zong Li <zong.li@...ive.com>
Subject: [PATCH v3 1/3] riscv: dts: Add dma-channels property in dma node

Add dma-channels property, then we can determine how many channels there
by device tree.

Signed-off-by: Zong Li <zong.li@...ive.com>
---
 arch/riscv/boot/dts/microchip/microchip-mpfs.dtsi | 1 +
 arch/riscv/boot/dts/sifive/fu540-c000.dtsi        | 1 +
 2 files changed, 2 insertions(+)

diff --git a/arch/riscv/boot/dts/microchip/microchip-mpfs.dtsi b/arch/riscv/boot/dts/microchip/microchip-mpfs.dtsi
index c9f6d205d2ba..3c48f2d7a4a4 100644
--- a/arch/riscv/boot/dts/microchip/microchip-mpfs.dtsi
+++ b/arch/riscv/boot/dts/microchip/microchip-mpfs.dtsi
@@ -188,6 +188,7 @@ dma@...0000 {
 			reg = <0x0 0x3000000 0x0 0x8000>;
 			interrupt-parent = <&plic>;
 			interrupts = <23 24 25 26 27 28 29 30>;
+			dma-channels = <4>;
 			#dma-cells = <1>;
 		};
 
diff --git a/arch/riscv/boot/dts/sifive/fu540-c000.dtsi b/arch/riscv/boot/dts/sifive/fu540-c000.dtsi
index 0655b5c4201d..2bdfe7f06e4b 100644
--- a/arch/riscv/boot/dts/sifive/fu540-c000.dtsi
+++ b/arch/riscv/boot/dts/sifive/fu540-c000.dtsi
@@ -171,6 +171,7 @@ dma: dma@...0000 {
 			reg = <0x0 0x3000000 0x0 0x8000>;
 			interrupt-parent = <&plic0>;
 			interrupts = <23 24 25 26 27 28 29 30>;
+			dma-channels = <4>;
 			#dma-cells = <1>;
 		};
 		uart1: serial@...11000 {
-- 
2.31.1