Received-SPF: pass (google.com: domain of linux-kernel+bounces-183940-linux.lists.archive=gmail.com@vger.kernel.org designates 139.178.88.99 as permitted sender) client-ip=139.178.88.99;
From: Amelie Delaunay <amelie.delaunay@foss.st.com>
To: Vinod Koul <vkoul@kernel.org>, Rob Herring <robh+dt@kernel.org>,
        Krzysztof
 Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        Conor Dooley
	<conor+dt@kernel.org>,
        Maxime Coquelin <mcoquelin.stm32@gmail.com>,
        Alexandre
 Torgue <alexandre.torgue@foss.st.com>
CC: <dmaengine@vger.kernel.org>, <devicetree@vger.kernel.org>,
        <linux-stm32@st-md-mailman.stormreply.com>,
        <linux-arm-kernel@lists.infradead.org>, <linux-kernel@vger.kernel.org>,
        <linux-hardening@vger.kernel.org>,
        Amelie Delaunay
	<amelie.delaunay@foss.st.com>
Subject: [PATCH v3 12/12] arm64: dts: st: add HPDMA nodes on stm32mp251
Date: Mon, 20 May 2024 17:49:48 +0200
Message-ID: <20240520154948.690697-13-amelie.delaunay@foss.st.com>
In-Reply-To: <20240520154948.690697-1-amelie.delaunay@foss.st.com>
References: <20240520154948.690697-1-amelie.delaunay@foss.st.com>
Precedence: bulk
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Content-Type: text/plain

The High Performance Direct Memory Access (HPDMA) controller is used to
perform programmable data transfers between memory-mapped peripherals
and memories (or between memories) via linked-lists.

There are 3 instances of HPDMA on stm32mp251, using stm32-dma3 driver, with
16 channels per instance and with one interrupt per channel.
Channels 0 to 7 are implemented with a FIFO of 8 bytes.
Channels 8 to 11 are implemented with a FIFO of 32 bytes.
Channels 12 to 15 are implemented with a FIFO of 128 bytes.
Thanks to stm32-dma3 bindings, the user can ask for a channel with specific
FIFO size.

Signed-off-by: Amelie Delaunay <amelie.delaunay@foss.st.com>
---
v2: use SoC specific compatible st,stm32mp25-dma3
---
 arch/arm64/boot/dts/st/stm32mp251.dtsi | 69 ++++++++++++++++++++++++++
 1 file changed, 69 insertions(+)

diff --git a/arch/arm64/boot/dts/st/stm32mp251.dtsi b/arch/arm64/boot/dts/st/stm32mp251.dtsi
index 5dd4f3580a60..73125657e7f0 100644
--- a/arch/arm64/boot/dts/st/stm32mp251.dtsi
+++ b/arch/arm64/boot/dts/st/stm32mp251.dtsi
@@ -123,6 +123,75 @@ soc@0 {
 		interrupt-parent = <&intc>;
 		ranges = <0x0 0x0 0x0 0x80000000>;
 
+		hpdma: dma-controller@40400000 {
+			compatible = "st,stm32mp25-dma3";
+			reg = <0x40400000 0x1000>;
+			interrupts = <GIC_SPI 33 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 34 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 35 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 36 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 37 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 38 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 39 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 40 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 41 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 42 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 43 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 44 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 45 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 46 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 47 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 48 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&ck_icn_ls_mcu>;
+			#dma-cells = <3>;
+		};
+
+		hpdma2: dma-controller@40410000 {
+			compatible = "st,stm32mp25-dma3";
+			reg = <0x40410000 0x1000>;
+			interrupts = <GIC_SPI 49 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 50 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 51 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 52 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 53 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 54 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 55 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 56 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 57 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 58 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 59 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 60 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 61 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 62 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 63 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 64 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&ck_icn_ls_mcu>;
+			#dma-cells = <3>;
+		};
+
+		hpdma3: dma-controller@40420000 {
+			compatible = "st,stm32mp25-dma3";
+			reg = <0x40420000 0x1000>;
+			interrupts = <GIC_SPI 65 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 66 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 67 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 68 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 69 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 70 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 71 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 72 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 73 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 74 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 75 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 76 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 77 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 78 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 79 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 80 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&ck_icn_ls_mcu>;
+			#dma-cells = <3>;
+		};
+
 		rifsc: rifsc-bus@42080000 {
 			compatible = "simple-bus";
 			reg = <0x42080000 0x1000>;
-- 
2.25.1