ath79: add support for Phicomm K2T

This patch adds dts for qca956x and also support for Phicomm K2T

The qca965x.dtsi adds nearly all the necessary components.
Both ath9k AHB and PCIe worked well.

The Phicomm K2T uses MTD partition 'config' to store the mac addresses in
JSON format. To extract these fields correctly, a script is introduced:
    /lib/functions/k2t.sh
This script provides a helper function to extract mac addresses, and is used
in three places.

Hardware spec of Phicomm K2T:
CPU: QCA9563
DRAM: 64MB DDR2
Flash: 16MB SPI-NOR
Switch: QCA8337
WiFi 5.8GHz: QCA9886

Flash instruction:
Apply sysupgrade.bin via serial console:

tftp 0x80000000 sysupgrade.bin && erase 0x9f090000 +$filesize && cp.b $fileaddr 0x9f090000 $filesize

Signed-off-by: Weijie Gao <hackpascal@gmail.com>

1 files changed, 151 insertions, 0 deletions

diff --git a/target/linux/ath79/dts/qca9563_phicomm-k2t.dts b/target/linux/ath79/dts/qca9563_phicomm-k2t.dts
new file mode 100644
index 0000000000..4ff9320d5c
--- /dev/null
+++ b/target/linux/ath79/dts/qca9563_phicomm-k2t.dts
@@ -0,0 +1,151 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+/dts-v1/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+
+#include "qca956x.dtsi"
+
+/ {
+	model = "Phicomm K2T";
+	compatible = "phicomm,k2t";
+
+	aliases {
+		led-status = &status_red;
+	};
+
+	chosen {
+		bootargs = "console=ttyS0,115200n8";
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		status_blue {
+			label = "phicomm:blue:status";
+			gpios = <&gpio 6 GPIO_ACTIVE_LOW>;
+			default-state = "off";
+		};
+
+		status_red: status_red {
+			label = "phicomm:red:status";
+			gpios = <&gpio 7 GPIO_ACTIVE_HIGH>;
+			default-state = "off";
+		};
+
+		status_yellow {
+			label = "phicomm:yellow:status";
+			gpios = <&gpio 8 GPIO_ACTIVE_LOW>;
+			default-state = "off";
+		};
+	};
+
+	keys {
+		compatible = "gpio-keys-polled";
+		#address-cells = <1>;
+		#size-cells = <0>;
+		poll-interval = <20>;
+
+		reset {
+			linux,code = <KEY_RESTART>;
+			gpios = <&gpio 2 GPIO_ACTIVE_LOW>;
+			debounce-interval = <60>;
+		};
+	};
+};
+
+&uart {
+	status = "okay";
+};
+
+&gpio {
+	status = "okay";
+};
+
+&pcie {
+	status = "okay";
+};
+
+&spi {
+	num-cs = <1>;
+
+	status = "okay";
+
+	flash@0 {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "jedec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <25000000>;
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			partition@0 {
+				label = "u-boot";
+				reg = <0x000000 0x30000>;
+				read-only;
+			};
+
+			partition@30000 {
+				label = "config";
+				reg = <0x030000 0x10000>;
+				read-only;
+			};
+
+			partition@40000 {
+				label = "permanent";
+				reg = <0x040000 0x50000>;
+				read-only;
+			};
+
+			partition@90000 {
+				label = "firmware";
+				reg = <0x090000 0xf60000>;
+			};
+
+			art: partition@ff0000 {
+				label = "art";
+				reg = <0xff0000 0x010000>;
+				read-only;
+			};
+		};
+	};
+};
+
+&mdio0 {
+	status = "okay";
+
+	phy-mask = <0>;
+
+	phy0: ethernet-phy@0 {
+		reg = <0>;
+		phy-mode = "sgmii";
+
+		qca,ar8327-initvals = <
+			0x04 0x00080080 /* PORT0 PAD MODE CTRL */
+			0x10 0x81000080 /* POWER_ON_STRIP */
+			0x50 0xcc35cc35 /* LED_CTRL0 */
+			0x54 0xcb37cb37 /* LED_CTRL1 */
+			0x58 0x00000000 /* LED_CTRL2 */
+			0x5c 0x00f3cf00 /* LED_CTRL3 */
+			0x7c 0x0000007e /* PORT0_STATUS */
+			>;
+	};
+};
+
+&eth0 {
+	status = "okay";
+
+	pll-data = <0x03000101 0x00000101 0x00001919>;
+
+	phy-mode = "sgmii";
+	phy-handle = <&phy0>;
+};
+
+&wmac {
+	status = "okay";
+	mtd-cal-data = <&art 0x1000>;
+};