dts: arm: adi: Add MAX32675 DMA instance and binding file

Add DMA0 node to MAX32675 dtsi file and add binding file for DMA slots.

Signed-off-by: Mert Ekren <[email protected]>

Author: mertekren

dts/arm/adi/max32/max32675.dtsi

@@ -6,6 +6,7 @@
 
 #include <arm/armv7-m.dtsi>
 #include <adi/max32/max32xxx.dtsi>
+#include <zephyr/dt-bindings/dma/max32675_dma.h>
 
 &flash0 {
 	reg = <0x10000000 DT_SIZE_K(384)>;
@@ -60,6 +61,16 @@
 			reg = <0x20024000 DT_SIZE_K(16)>;
 		};
 
+		dma0: dma@40028000 {
+			compatible = "adi,max32-dma";
+			reg = <0x40028000 0x1000>;
+			clocks = <&gcr ADI_MAX32_CLOCK_BUS0 5>;
+			interrupts = <28 0>, <29 0>, <30 0>, <31 0>, <68 0>, <69 0>, <70 0>, <71 0>;
+			dma-channels = <8>;
+			status = "disabled";
+			#dma-cells = <2>;
+		};
+
 		spi1: spi@40047000 {
 			compatible = "adi,max32-spi";
 			reg = <0x40047000 0x1000>;

include/zephyr/dt-bindings/dma/max32675_dma.h

@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) 2024 Analog Devices, Inc.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#ifndef ZEPHYR_INCLUDE_DT_BINDINGS_DMA_MAX32675_DMA_H_
+#define ZEPHYR_INCLUDE_DT_BINDINGS_DMA_MAX32675_DMA_H_
+
+#define MAX32_DMA_SLOT_MEMTOMEM  0x00U
+#define MAX32_DMA_SLOT_SPI0_RX   0x01U
+#define MAX32_DMA_SLOT_SPI1_RX   0x02U
+#define MAX32_DMA_SLOT_UART0_RX  0x04U
+#define MAX32_DMA_SLOT_I2C0_RX   0x07U
+#define MAX32_DMA_SLOT_I2C2_RX   0x0AU
+#define MAX32_DMA_SLOT_UART2_RX  0x0EU
+#define MAX32_DMA_SLOT_AES_RX    0x10U
+#define MAX32_DMA_SLOT_I2S_RX    0x1EU
+#define MAX32_DMA_SLOT_SPI0_TX   0x21U
+#define MAX32_DMA_SLOT_SPI1_TX   0x22U
+#define MAX32_DMA_SLOT_UART0_TX  0x24U
+#define MAX32_DMA_SLOT_I2C0_TX   0x27U
+#define MAX32_DMA_SLOT_I2C2_TX   0x2AU
+#define MAX32_DMA_SLOT_CRC       0x2CU
+#define MAX32_DMA_SLOT_UART2_TX  0x2EU
+#define MAX32_DMA_SLOT_AES_TX    0x30U
+#define MAX32_DMA_SLOT_I2S_TX    0x3EU
+
+#endif /* ZEPHYR_INCLUDE_DT_BINDINGS_DMA_MAX32675_DMA_H_ */