xtensa: add support for the 'xtfpga' evaluation board

The 'xtfpga' board is actually a set of FPGA evaluation boards that
can be configured to run an Xtensa processor.

 - Avnet Xilinx LX60
 - Avnet Xilinx LX110
 - Avnet Xilinx LX200
 - Xilinx ML605
 - Xilinx KC705

These boards share the same components (open-ethernet, ns16550 serial,
lcd display, flash, etc.).

Signed-off-by: Chris Zankel <chris@zankel.net>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>

9 files changed, 263 insertions, 0 deletions

diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig
index bb6a678f87..2ba7132c20 100644
--- a/arch/xtensa/Kconfig
+++ b/arch/xtensa/Kconfig
@@ -11,8 +11,11 @@ config SYS_CPU
 choice
 	prompt "Target select"
 
+config TARGET_XTFPGA
+	bool "Support XTFPGA"
 
 endchoice
 
+source "board/cadence/xtfpga/Kconfig"
 
 endmenu
diff --git a/arch/xtensa/dts/Makefile b/arch/xtensa/dts/Makefile
index eacf6f313b..e14cdac0fc 100644
--- a/arch/xtensa/dts/Makefile
+++ b/arch/xtensa/dts/Makefile
@@ -2,6 +2,8 @@
 # SPDX-License-Identifier:	GPL-2.0+
 #
 
+dtb-$(CONFIG_XTFPGA) += ml605.dtb ml605_nommu.dtb kc705.dtb kc705_nommu.dtb
+
 targets += $(dtb-y)
 
 DTC_FLAGS +=
diff --git a/arch/xtensa/dts/kc705.dts b/arch/xtensa/dts/kc705.dts
new file mode 100644
index 0000000000..3b89e83b30
--- /dev/null
+++ b/arch/xtensa/dts/kc705.dts
@@ -0,0 +1,15 @@
+/dts-v1/;
+/include/ "xtfpga.dtsi"
+/include/ "xtfpga-flash-128m.dtsi"
+
+/ {
+	compatible = "cdns,xtensa-kc705";
+	chosen {
+		bootargs = "earlycon=uart8250,mmio32native,0xfd050020,115200n8 console=ttyS0,115200n8 ip=dhcp root=/dev/nfs rw debug";
+		stdout-path = &serial0;
+	};
+	memory@0 {
+		device_type = "memory";
+		reg = <0x00000000 0x38000000>;
+	};
+};
diff --git a/arch/xtensa/dts/kc705_nommu.dts b/arch/xtensa/dts/kc705_nommu.dts
new file mode 100644
index 0000000000..57f0dab87c
--- /dev/null
+++ b/arch/xtensa/dts/kc705_nommu.dts
@@ -0,0 +1,17 @@
+/dts-v1/;
+/include/ "xtfpga.dtsi"
+/include/ "xtfpga-flash-128m.dtsi"
+
+/ {
+	compatible = "cdns,xtensa-kc705";
+	chosen {
+		bootargs = "earlycon=uart8250,mmio32native,0x9d050020,115200n8 console=ttyS0,115200n8 ip=dhcp root=/dev/nfs rw debug";
+	};
+	memory@0 {
+		device_type = "memory";
+		reg = <0x60000000 0x10000000>;
+	};
+	soc {
+		ranges = <0x00000000 0x90000000 0x10000000>;
+	};
+};
diff --git a/arch/xtensa/dts/ml605.dts b/arch/xtensa/dts/ml605.dts
new file mode 100644
index 0000000000..f323f96f98
--- /dev/null
+++ b/arch/xtensa/dts/ml605.dts
@@ -0,0 +1,15 @@
+/dts-v1/;
+/include/ "xtfpga.dtsi"
+/include/ "xtfpga-flash-16m.dtsi"
+
+/ {
+	compatible = "cdns,xtensa-ml605";
+	chosen {
+		bootargs = "earlycon=uart8250,mmio32native,0xfd050020,115200n8 console=ttyS0,115200n8 ip=dhcp root=/dev/nfs rw debug";
+		stdout-path = &serial0;
+	};
+	memory@0 {
+		device_type = "memory";
+		reg = <0x00000000 0x18000000>;
+	};
+};
diff --git a/arch/xtensa/dts/ml605_nommu.dts b/arch/xtensa/dts/ml605_nommu.dts
new file mode 100644
index 0000000000..6bdf40055b
--- /dev/null
+++ b/arch/xtensa/dts/ml605_nommu.dts
@@ -0,0 +1,18 @@
+/dts-v1/;
+/include/ "xtfpga.dtsi"
+/include/ "xtfpga-flash-16m.dtsi"
+
+/ {
+	compatible = "cdns,xtensa-ml605";
+	chosen {
+		bootargs = "earlycon=uart8250,mmio32native,0x9d050020,115200n8 console=ttyS0,115200n8 ip=dhcp root=/dev/nfs rw debug";
+		stdout-path = &serial0;
+	};
+	memory@0 {
+		device_type = "memory";
+		reg = <0x00000000 0x10000000>;
+	};
+	soc {
+		ranges = <0x00000000 0x90000000 0x10000000>;
+	};
+};
diff --git a/arch/xtensa/dts/xtfpga-flash-128m.dtsi b/arch/xtensa/dts/xtfpga-flash-128m.dtsi
new file mode 100644
index 0000000000..d3a88e0298
--- /dev/null
+++ b/arch/xtensa/dts/xtfpga-flash-128m.dtsi
@@ -0,0 +1,28 @@
+/ {
+	soc {
+		flash: flash@00000000 {
+			#address-cells = <1>;
+			#size-cells = <1>;
+			compatible = "cfi-flash";
+			reg = <0x00000000 0x08000000>;
+			bank-width = <2>;
+			device-width = <2>;
+			partition@0x0 {
+				label = "data";
+				reg = <0x00000000 0x06000000>;
+			};
+			partition@0x6000000 {
+				label = "boot loader area";
+				reg = <0x06000000 0x00800000>;
+			};
+			partition@0x6800000 {
+				label = "kernel image";
+				reg = <0x06800000 0x017e0000>;
+			};
+			partition@0x7fe0000 {
+				label = "boot environment";
+				reg = <0x07fe0000 0x00020000>;
+			};
+		};
+        };
+};
diff --git a/arch/xtensa/dts/xtfpga-flash-16m.dtsi b/arch/xtensa/dts/xtfpga-flash-16m.dtsi
new file mode 100644
index 0000000000..1d97203c18
--- /dev/null
+++ b/arch/xtensa/dts/xtfpga-flash-16m.dtsi
@@ -0,0 +1,28 @@
+/ {
+	soc {
+		flash: flash@08000000 {
+			#address-cells = <1>;
+			#size-cells = <1>;
+			compatible = "cfi-flash";
+			reg = <0x08000000 0x01000000>;
+			bank-width = <2>;
+			device-width = <2>;
+			partition@0x0 {
+				label = "boot loader area";
+				reg = <0x00000000 0x00400000>;
+			};
+			partition@0x400000 {
+				label = "kernel image";
+				reg = <0x00400000 0x00600000>;
+			};
+			partition@0xa00000 {
+				label = "data";
+				reg = <0x00a00000 0x005e0000>;
+			};
+			partition@0xfe0000 {
+				label = "boot environment";
+				reg = <0x00fe0000 0x00020000>;
+			};
+		};
+	};
+};
diff --git a/arch/xtensa/dts/xtfpga.dtsi b/arch/xtensa/dts/xtfpga.dtsi
new file mode 100644
index 0000000000..cd45f9c2c4
--- /dev/null
+++ b/arch/xtensa/dts/xtfpga.dtsi
@@ -0,0 +1,137 @@
+/ {
+	compatible = "cdns,xtensa-xtfpga";
+	#address-cells = <1>;
+	#size-cells = <1>;
+	interrupt-parent = <&pic>;
+
+	chosen {
+		bootargs = "earlycon=uart8250,mmio32native,0xfd050020,115200n8 console=ttyS0,115200n8 ip=dhcp root=/dev/nfs rw debug";
+	};
+
+	memory@0 {
+		device_type = "memory";
+		reg = <0x00000000 0x06000000>;
+	};
+
+	cpus {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		cpu@0 {
+			compatible = "cdns,xtensa-cpu";
+			reg = <0>;
+			/* Filled in by platform_setup from FPGA register
+			 * clock-frequency = <100000000>;
+			 */
+		};
+	};
+
+	pic: pic {
+		compatible = "cdns,xtensa-pic";
+		/* one cell: internal irq number,
+		 * two cells: second cell == 0: internal irq number
+		 *            second cell == 1: external irq number
+		 */
+		#interrupt-cells = <2>;
+		interrupt-controller;
+	};
+
+	clocks {
+		osc: main-oscillator {
+			#clock-cells = <0>;
+			compatible = "fixed-clock";
+		};
+
+		clk54: clk54 {
+			#clock-cells = <0>;
+			compatible = "fixed-clock";
+			clock-frequency = <54000000>;
+		};
+	};
+
+	soc {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "simple-bus";
+		ranges = <0x00000000 0xf0000000 0x10000000>;
+
+		serial0: serial@0d050020 {
+			device_type = "serial";
+			compatible = "ns16550a";
+			no-loopback-test;
+			reg = <0x0d050020 0x20>;
+			reg-shift = <2>;
+			reg-io-width = <4>;
+			native-endian;
+			interrupts = <0 1>; /* external irq 0 */
+			clocks = <&osc>;
+		};
+
+		enet0: ethoc@0d030000 {
+			compatible = "opencores,ethoc";
+			reg = <0x0d030000 0x4000 0x0d800000 0x4000>;
+			native-endian;
+			interrupts = <1 1>; /* external irq 1 */
+			local-mac-address = [00 50 c2 13 6f 00];
+			clocks = <&osc>;
+		};
+
+		i2s0: xtfpga-i2s@0d080000 {
+			#sound-dai-cells = <0>;
+			compatible = "cdns,xtfpga-i2s";
+			reg = <0x0d080000 0x40>;
+			interrupts = <2 1>; /* external irq 2 */
+			clocks = <&cdce706 4>;
+		};
+
+		i2c0: i2c-master@0d090000 {
+			compatible = "opencores,i2c-ocores";
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <0x0d090000 0x20>;
+			reg-shift = <2>;
+			reg-io-width = <4>;
+			native-endian;
+			interrupts = <4 1>;
+			clocks = <&osc>;
+
+			cdce706: clock-synth@69 {
+				compatible = "ti,cdce706";
+				#clock-cells = <1>;
+				reg = <0x69>;
+				clocks = <&clk54>;
+				clock-names = "clk_in0";
+			};
+		};
+
+		spi0: spi-master@0d0a0000 {
+			compatible = "cdns,xtfpga-spi";
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <0x0d0a0000 0xc>;
+
+			tlv320aic23: sound-codec@0 {
+				#sound-dai-cells = <0>;
+				compatible = "tlv320aic23";
+				reg = <0>;
+				spi-max-frequency = <12500000>;
+			};
+		};
+	};
+
+	sound {
+		compatible = "simple-audio-card";
+		simple-audio-card,format = "i2s";
+		simple-audio-card,mclk-fs = <256>;
+
+		simple-audio-card,cpu {
+			sound-dai = <&i2s0>;
+		};
+
+		simple-audio-card,codec {
+			sound-dai = <&tlv320aic23>;
+			simple-audio-card,bitclock-master = <0>;
+			simple-audio-card,frame-master = <0>;
+			clocks = <&cdce706 4>;
+		};
+	};
+};