From: Samuel Holland <samuel@sholland.org>
To: Chen-Yu Tsai <wens@csie.org>, Jernej Skrabec <jernej.skrabec@gmail.com>
Cc: Samuel Holland <samuel@sholland.org>,
Gregory CLEMENT <gregory.clement@bootlin.com>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Rob Herring <robh+dt@kernel.org>,
devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-i2c@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-sunxi@lists.linux.dev, Yangtao Li <frank@allwinnertech.com>
Subject: [PATCH 2/3] arm64: dts: allwinner: a100: Add device node for DMA controller
Date: Mon, 29 Aug 2022 21:08:23 -0500 [thread overview]
Message-ID: <20220830020824.62288-3-samuel@sholland.org> (raw)
In-Reply-To: <20220830020824.62288-1-samuel@sholland.org>
From: Yangtao Li <frank@allwinnertech.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@allwinnertech.com>
Signed-off-by: Samuel Holland <samuel@sholland.org>
---
Changes in v1:
- 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@3001000 {
#reset-cells = <1>;
};
+ dma: dma-controller@3002000 {
+ 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@3021000 {
compatible = "arm,gic-400";
reg = <0x03021000 0x1000>, <0x03022000 0x2000>,
--
2.35.1
next prev parent reply other threads:[~2022-08-30 2:08 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-30 2:08 [PATCH 0/3] DMA binding for Allwinner V536/newer I2C Samuel Holland
2022-08-30 2:08 ` [PATCH 1/3] dt-bindings: i2c: mv64xxx: Document DMA properties Samuel Holland
2022-08-30 9:36 ` Krzysztof Kozlowski
2022-08-30 13:10 ` Samuel Holland
2022-08-30 13:23 ` Krzysztof Kozlowski
2022-09-07 20:02 ` Wolfram Sang
2022-08-30 2:08 ` Samuel Holland [this message]
2022-09-06 21:09 ` [PATCH 2/3] arm64: dts: allwinner: a100: Add device node for DMA controller Jernej Škrabec
2022-09-08 20:01 ` Jernej Škrabec
2022-08-30 2:08 ` [PATCH 3/3] arm64: dts: allwinner: a100: Add I2C DMA requests Samuel Holland
2022-09-06 21:11 ` Jernej Škrabec
2022-09-08 20:01 ` Jernej Škrabec
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