linux-kernel - [PATCH v5 3/6] arm64: dts: allwinner: a100: Add device node for DMA controller

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Message-Id: <20220826050942.20067-4-samuel@sholland.org>
Date:   Fri, 26 Aug 2022 00:09:39 -0500
From:   Samuel Holland <samuel@...lland.org>
To:     Pavel Machek <pavel@....cz>, Chen-Yu Tsai <wens@...e.org>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        linux-leds@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-sunxi@...ts.linux.dev, linux-riscv@...ts.infradead.org,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        devicetree@...r.kernel.org, Rob Herring <robh+dt@...nel.org>,
        Samuel Holland <samuel@...lland.org>,
        Yangtao Li <frank@...winnertech.com>
Subject: [PATCH v5 3/6] arm64: dts: allwinner: a100: Add device node for DMA controller

From: Yangtao Li <frank@...winnertech.com>

The A100 SoC has a DMA controller that supports 8 DMA channels
to and from various peripherals.

Add a device node for it.

Signed-off-by: Yangtao Li <frank@...winnertech.com>
Signed-off-by: Samuel Holland <samuel@...lland.org>
---

Changes in v5:
 - New patch for v5, needed since the LEDC binding requires DMA
 - From previous submission: fixed off-by-one in dma-requests property

 arch/arm64/boot/dts/allwinner/sun50i-a100.dtsi | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a100.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-a100.dtsi
index 548539c93ab0..5453a3bb7d81 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-a100.dtsi
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a100.dtsi
@@ -101,6 +101,18 @@ ccu: clock@...1000 {
 			#reset-cells = <1>;
 		};
 
+		dma: dma-controller@...2000 {
+			compatible = "allwinner,sun50i-a100-dma";
+			reg = <0x03002000 0x1000>;
+			interrupts = <GIC_SPI 45 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&ccu CLK_BUS_DMA>, <&ccu CLK_MBUS_DMA>;
+			clock-names = "bus", "mbus";
+			resets = <&ccu RST_BUS_DMA>;
+			dma-channels = <8>;
+			dma-requests = <52>;
+			#dma-cells = <1>;
+		};
+
 		gic: interrupt-controller@...1000 {
 			compatible = "arm,gic-400";
 			reg = <0x03021000 0x1000>, <0x03022000 0x2000>,
-- 
2.35.1