bmips: bcm63268: add bcm6348-iudma support

Signed-off-by: NÁlvaro Fernández Rojas <noltari@gmail.com>

arch/mips/dts/brcm,bcm63268.dtsi

@@ -4,6 +4,7 @@
  */
 
 #include <dt-bindings/clock/bcm63268-clock.h>
+#include <dt-bindings/dma/bcm63268-dma.h>
 #include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/power-domain/bcm63268-power-domain.h>
 #include <dt-bindings/reset/bcm63268-reset.h>
@@ -217,5 +218,17 @@
 			reg = <0x10003000 0x894>;
 			u-boot,dm-pre-reloc;
 		};
+
+		iudma: dma-controller@1000d800 {
+			compatible = "brcm,bcm6368-iudma";
+			reg = <0x1000d800 0x80>,
+			      <0x1000da00 0x80>,
+			      <0x1000dc00 0x80>;
+			reg-names = "dma",
+				    "dma-channels",
+				    "dma-sram";
+			#dma-cells = <1>;
+			dma-channels = <8>;
+		};
 	};
 };

include/dt-bindings/dma/bcm63268-dma.h

+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2018 Álvaro Fernández Rojas <noltari@gmail.com>
+ *
+ * Derived from linux/drivers/net/ethernet/broadcom/bcm63xx_enet.c
+ */
+
+#ifndef __DT_BINDINGS_DMA_BCM63268_H
+#define __DT_BINDINGS_DMA_BCM63268_H
+
+#define BCM63268_DMA_ENETSW_RX	0
+#define BCM63268_DMA_ENETSW_TX	1
+
+#endif /* __DT_BINDINGS_DMA_BCM63268_H */