linux-kernel - [PATCH 06/19] arm64: allwinner: a100: Add device node for DMA controller

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Message-Id: <20201110040553.1381-7-frank@allwinnertech.com>
Date:   Tue, 10 Nov 2020 12:05:40 +0800
From:   Frank Lee <frank@...winnertech.com>
To:     vkoul@...nel.org, robh+dt@...nel.org, mripard@...nel.org,
        wens@...e.org, ulf.hansson@...aro.org, kishon@...com,
        wim@...ux-watchdog.org, linux@...ck-us.net,
        dan.j.williams@...el.com, linus.walleij@...aro.org,
        wsa+renesas@...g-engineering.com, dianders@...omium.org,
        marex@...x.de, colin.king@...onical.com, rdunlap@...radead.org,
        krzk@...nel.org, gregkh@...uxfoundation.org, megous@...ous.com,
        rikard.falkeborn@...il.com, dmaengine@...r.kernel.org,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-mmc@...r.kernel.org,
        linux-watchdog@...r.kernel.org, linux-gpio@...r.kernel.org,
        tiny.windzz@...il.com
Cc:     Yangtao Li <frank@...winnertech.com>
Subject: [PATCH 06/19] arm64: 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>
---
 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 cc321c04f121..c34ed8045363 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";
+			dma-channels = <8>;
+			dma-requests = <51>;
+			resets = <&ccu RST_BUS_DMA>;
+			#dma-cells = <1>;
+		};
+
 		gic: interrupt-controller@...1000 {
 			compatible = "arm,gic-400";
 			reg = <0x03021000 0x1000>, <0x03022000 0x2000>,
-- 
2.28.0