bmips: bcm6348: add bcm6348-iudma support

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

diff --git a/arch/mips/dts/brcm,bcm6348.dtsi b/arch/mips/dts/brcm,bcm6348.dtsi
index cc80bbc808d12f6983398aec32d9aa0a20897045..875de232ca9e68679e194f756598341650f446bf 100644 (file)
--- a/arch/mips/dts/brcm,bcm6348.dtsi
+++ b/arch/mips/dts/brcm,bcm6348.dtsi
@@ -4,6 +4,7 @@
  */
 
 #include <dt-bindings/clock/bcm6348-clock.h>
+#include <dt-bindings/dma/bcm6348-dma.h>
 #include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/reset/bcm6348-reset.h>
 #include "skeleton.dtsi"
@@ -159,5 +160,20 @@
                        reg = <0xfffe2300 0x38>;
                        u-boot,dm-pre-reloc;
                };
+
+               iudma: dma-controller@fffe7000 {
+                       compatible = "brcm,bcm6348-iudma";
+                       reg = <0xfffe7000 0x1c>,
+                             <0xfffe7100 0x40>,
+                             <0xfffe7200 0x40>;
+                       reg-names = "dma",
+                                   "dma-channels",
+                                   "dma-sram";
+                       #dma-cells = <1>;
+                       dma-channels = <4>;
+                       clocks = <&periph_clk BCM6348_CLK_ENET>;
+                       resets = <&periph_rst BCM6348_RST_ENET>,
+                                <&periph_rst BCM6348_RST_DMAMEM>;
+               };
        };
 };

diff --git a/include/dt-bindings/dma/bcm6348-dma.h b/include/dt-bindings/dma/bcm6348-dma.h
new file mode 100644 (file)
index 0000000..36c2ffd
--- /dev/null
+++ b/include/dt-bindings/dma/bcm6348-dma.h
@@ -0,0 +1,16 @@
+// 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_BCM6348_H
+#define __DT_BINDINGS_DMA_BCM6348_H
+
+#define BCM6348_DMA_ENET0_RX   0
+#define BCM6348_DMA_ENET0_TX   1
+#define BCM6348_DMA_ENET1_RX   2
+#define BCM6348_DMA_ENET1_TX   3
+
+#endif /* __DT_BINDINGS_DMA_BCM6348_H */