ARM: dts: ixp4xx: Add device trees for Coyote and IXDPG425

This adds device trees for the ADI Engineering Coyote and the
Intel IXDPG425 reference design. The ethernet set-up on the
IXDPG425 is a bit dubious because I think it uses a DSA
switch chip, but this is a good as it gets right now.

The Coyote boardfile claims an IDE port exist at 0xFFFE1000
but the implementation does not use this. If you have the
board and can/want to test, please contact me.

Cc: Deepak Saxena <dsaxena@plexity.net>
Cc: Vladimir Barinov <vladimir.barinov@cogentembedded.com>
Cc: Zoltan HERPAI <wigyori@uid0.hu>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

1 files changed, 125 insertions, 0 deletions

diff --git a/arch/arm/boot/dts/intel-ixp42x-ixdpg425.dts b/arch/arm/boot/dts/intel-ixp42x-ixdpg425.dts
new file mode 100644
index 000000000000..002a8705abc9
--- /dev/null
+++ b/arch/arm/boot/dts/intel-ixp42x-ixdpg425.dts
@@ -0,0 +1,125 @@
+// SPDX-License-Identifier: ISC
+/*
+ * Device Tree file for the Intel IXDPG425 reference design.
+ * Derived from boardfiles written by MontaVista software.
+ * Ethernet set-up from OpenWrt.
+ *
+ * The device has 4 x FXS RJ11 ports for analog phones for
+ * internet telephony. (Not supported yet.)
+ *
+ * The device has 9 status LEDs we do not support yet.
+ *
+ * This device is very similar to ADI engingeering Coyote.
+ */
+
+/dts-v1/;
+
+#include "intel-ixp42x.dtsi"
+#include <dt-bindings/input/input.h>
+
+/ {
+	model = "Intel IXDPG425 reference design";
+	compatible = "intel,ixdpg425", "intel,ixp42x";
+	#address-cells = <1>;
+	#size-cells = <1>;
+
+	memory@0 {
+		/* 32 MB SDRAM */
+		device_type = "memory";
+		reg = <0x00000000 0x02000000>;
+	};
+
+	chosen {
+		bootargs = "console=ttyS0,115200n8 root=/dev/sda1 rw rootwait";
+		stdout-path = "uart0:115200n8";
+	};
+
+	aliases {
+		serial0 = &uart0;
+	};
+
+	soc {
+		bus@c4000000 {
+			flash@0,0 {
+				compatible = "intel,ixp4xx-flash", "cfi-flash";
+				bank-width = <2>;
+				/*
+				 * CHECKME: the product brief says 16MB in a flash
+				 * socket.
+				 */
+				reg = <0 0x00000000 0x1000000>;
+
+				/* Configure expansion bus to allow writes */
+				intel,ixp4xx-eb-write-enable = <1>;
+
+				partitions {
+					compatible = "redboot-fis";
+					/* CHECKME: guess this is Redboot FIS */
+					fis-index-block = <0x7f>;
+				};
+			};
+		};
+
+		pci@c0000000 {
+			status = "ok";
+
+			/*
+			 * Taken from IXDPG425 PCI boardfile.
+			 * We have slots (IDSEL) 12, 13 and 14 with one assigned IRQ
+			 * for 12 & 13 and one for 14.
+			 */
+			interrupt-map =
+			/* IDSEL 12 */
+			<0x6000 0 0 1 &gpio0 7 IRQ_TYPE_LEVEL_LOW>, /* INT A on slot 12 is irq 7 */
+			<0x6000 0 0 2 &gpio0 7 IRQ_TYPE_LEVEL_LOW>, /* INT B on slot 12 is irq 7 */
+			<0x6000 0 0 3 &gpio0 7 IRQ_TYPE_LEVEL_LOW>, /* INT C on slot 12 is irq 7 */
+			<0x6000 0 0 4 &gpio0 7 IRQ_TYPE_LEVEL_LOW>, /* INT D on slot 12 is irq 7 */
+			/* IDSEL 13 */
+			<0x6800 0 0 1 &gpio0 7 IRQ_TYPE_LEVEL_LOW>, /* INT A on slot 13 is irq 7 */
+			<0x6800 0 0 2 &gpio0 7 IRQ_TYPE_LEVEL_LOW>, /* INT B on slot 13 is irq 7 */
+			<0x6800 0 0 3 &gpio0 7 IRQ_TYPE_LEVEL_LOW>, /* INT C on slot 13 is irq 7 */
+			<0x6800 0 0 4 &gpio0 7 IRQ_TYPE_LEVEL_LOW>, /* INT D on slot 13 is irq 7 */
+			/* IDSEL 14 */
+			<0x7000 0 0 1 &gpio0 6 IRQ_TYPE_LEVEL_LOW>, /* INT A on slot 14 is irq 6 */
+			<0x7000 0 0 2 &gpio0 6 IRQ_TYPE_LEVEL_LOW>, /* INT B on slot 14 is irq 6 */
+			<0x7000 0 0 3 &gpio0 6 IRQ_TYPE_LEVEL_LOW>, /* INT C on slot 14 is irq 6 */
+			<0x7000 0 0 4 &gpio0 6 IRQ_TYPE_LEVEL_LOW>; /* INT D on slot 14 is irq 6 */
+		};
+
+		/*
+		 * CHECKME: this ethernet setup seems dubious. Photos of the board shows some kind
+		 * of Realtek DSA switch on the board.
+		 */
+
+		/* EthB */
+		ethernet@c8009000 {
+			status = "ok";
+			queue-rx = <&qmgr 3>;
+			queue-txready = <&qmgr 20>;
+			phy-mode = "rgmii";
+			phy-handle = <&phy5>;
+
+			mdio {
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				phy4: ethernet-phy@4 {
+					reg = <4>;
+				};
+
+				phy5: ethernet-phy@5 {
+					reg = <5>;
+				};
+			};
+		};
+
+		/* EthC */
+		ethernet@c800a000 {
+			status = "ok";
+			queue-rx = <&qmgr 4>;
+			queue-txready = <&qmgr 21>;
+			phy-mode = "rgmii";
+			phy-handle = <&phy4>;
+		};
+	};
+};