lantiq: add Falcon support

This adds support for the Intel Falcon SoC for GPON.

Support for the Falcon SoC was removed in commit c8218363951 svn rev:
40392 from OpenWrt, this commit adds it again.

This patch adds a new subtarget for the Falcon SoC, but it still misses
all the drivers needed to control the GPON part.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

1 files changed, 85 insertions, 0 deletions

diff --git a/target/linux/lantiq/dts/EASY98021.dts b/target/linux/lantiq/dts/EASY98021.dts
new file mode 100644
index 0000000000..b2574ac941
--- /dev/null
+++ b/target/linux/lantiq/dts/EASY98021.dts
@@ -0,0 +1,85 @@
+/dts-v1/;
+
+#include <dt-bindings/gpio/gpio.h>
+
+#include "falcon.dtsi"
+#include "falcon-sflash-16M.dtsi"
+
+/ {
+	model = "EASY98021 - Lantiq Falcon HGU Reference Board";
+	compatible = "lantiq,falcon-easy98021", "lantiq,falcon-easy98020", "lantiq,falcon";
+
+	chosen {
+		bootargs-append = "console=ttyLTQ0,115200 init=/etc/preinit";
+	};
+
+	aliases {
+		spi0 = &ebu_cs0;
+	};
+
+	memory@0 {
+		device_type = "memory";
+		reg = <0x0 0x4000000>;  // 64M at 0x0
+	};
+
+	gpio-keys {
+		compatible = "gpio-keys";
+		reset {
+			label = "reset";
+			gpios = <&gpio0 1 GPIO_ACTIVE_LOW>;
+			linux,code = <0x198>;
+		};
+	};
+
+	gpio-mmc {
+		/* Place-holder for SIM-Card connector,
+		   to list the used GPIOs, no official binding */
+		compatible = "gpio-mmc";
+		gpios =  <&gpio0 3 GPIO_ACTIVE_HIGH>,
+			 <&gpio0 3 GPIO_ACTIVE_HIGH>,
+			 <&gpio0 2 GPIO_ACTIVE_HIGH>,
+			 <0>; /* no CS */
+		gpio-names = "di", "do", "clk", "cs";
+		reset-gpio =  <&gpio3 24 GPIO_ACTIVE_HIGH>;
+	};
+
+	pinctrl {
+		led_pins: led-pins {
+			lantiq,pins = "io11", "io14", "io36", "io37", "io38";
+			lantiq,function = "gpio";
+		};
+	};
+
+	easy98021-leds {
+		compatible = "gpio-leds";
+		pinctrl-names = "default";
+		pinctrl-0 = <&led_pins &bootled_pins>;
+
+		GPON {
+			label = "easy98021:green:gpon";
+			gpios = <&gpio0 11 GPIO_ACTIVE_HIGH>;
+			default-state = "keep";
+		};
+		TEST {
+			label = "easy98021:red:test";
+			gpios = <&gpio0 14 GPIO_ACTIVE_HIGH>;
+			default-state = "keep";
+		};
+		ETH {
+			label = "easy98021:green:status";
+			gpios = <&gpio1 4 GPIO_ACTIVE_HIGH>;
+			default-state = "keep";
+		};
+		VOICE {
+			label = "easy98021:green:voice";
+			gpios = <&gpio1 5 GPIO_ACTIVE_HIGH>;
+			default-state = "keep";
+		};
+		SIMCARD {
+			label = "easy98021:green:simcard";
+			gpios = <&gpio1 6 GPIO_ACTIVE_HIGH>;
+			default-state = "keep";
+		};
+	};
+};
+