ipq806x: add support for OpenMesh A42

* QCA IPQ401x
* 256 MB of RAM
* 32 MB of SPI NOR flash (s25fl256s1)
  - 2x 15 MB available; but one of the 15 MB regions is the recovery image
* 2T2R 2.4 GHz
  - QCA4019 hw1.0 (SoC)
  - requires special BDF in QCA4019/hw1.0/board-2.bin with
    bus=ahb,bmi-chip-id=0,bmi-board-id=16,variant=OM-A42
* 2T2R 5 GHz
  - QCA4019 hw1.0 (SoC)
  - requires special BDF in QCA4019/hw1.0/board-2.bin with
    bus=ahb,bmi-chip-id=0,bmi-board-id=17,variant=OM-A42
* multi-color LED (controlled via red/green/blue GPIOs)
* 1x button (reset; kmod-input-gpio-keys compatible)
* external watchdog
  - triggered GPIO
* 1x USB (xHCI)
* TTL pins are on board (arrow points to VCC, then follows: GND, TX, RX)
* 2x gigabit ethernet
* powered only via POE
  - 802.3af POE on Ethernet 1
  - 18-24v passive POE (mode B) on Ethernet 2

The tool ap51-flash (https://github.com/ap51-flash/ap51-flash) should be
used to transfer the factory image to the u-boot when the device boots up.

Signed-off-by: Sven Eckelmann <sven.eckelmann@open-mesh.com>

1 files changed, 244 insertions, 0 deletions

diff --git a/target/linux/ipq806x/files-4.9/arch/arm/boot/dts/qcom-ipq4019-a42.dts b/target/linux/ipq806x/files-4.9/arch/arm/boot/dts/qcom-ipq4019-a42.dts
new file mode 100644
index 0000000000..887be993e8
--- /dev/null
+++ b/target/linux/ipq806x/files-4.9/arch/arm/boot/dts/qcom-ipq4019-a42.dts
@@ -0,0 +1,244 @@
+/* Copyright (c) 2015, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2017, Sven Eckelmann <sven.eckelmann@openmesh.com>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ */
+
+#include "qcom-ipq4019.dtsi"
+#include "qcom-ipq4019-bus.dtsi"
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+#include <dt-bindings/soc/qcom,tcsr.h>
+
+/ {
+	model = "OpenMesh A42";
+	compatible = "openmesh,a42", "qcom,ipq4019";
+
+	reserved-memory {
+		#address-cells = <0x1>;
+		#size-cells = <0x1>;
+		ranges;
+
+		rsvd1@87000000 {
+			reg = <0x87000000 0x500000>;
+			no-map;
+		};
+
+		wifi_dump@87500000 {
+			reg = <0x87500000 0x600000>;
+			no-map;
+		};
+
+		rsvd2@87B00000 {
+			reg = <0x87b00000 0x500000>;
+			no-map;
+		};
+	};
+
+	soc {
+		tcsr@194b000 {
+			/* select hostmode */
+			compatible = "qcom,tcsr";
+			reg = <0x194b000 0x100>;
+			qcom,usb-hsphy-mode-select = <TCSR_USB_HSPHY_HOST_MODE>;
+			status = "ok";
+		};
+
+		ess_tcsr@1953000 {
+			compatible = "qcom,tcsr";
+			reg = <0x1953000 0x1000>;
+			qcom,ess-interface-select = <TCSR_ESS_PSGMII>;
+		};
+
+		tcsr@1949000 {
+			compatible = "qcom,tcsr";
+			reg = <0x1949000 0x100>;
+			qcom,wifi_glb_cfg = <TCSR_WIFI_GLB_CFG>;
+		};
+
+		tcsr@1957000 {
+			compatible = "qcom,tcsr";
+			reg = <0x1957000 0x100>;
+			qcom,wifi_noc_memtype_m0_m2 = <TCSR_WIFI_NOC_MEMTYPE_M0_M2>;
+		};
+
+		pinctrl@1000000 {
+			serial_pins: serial_pinmux {
+				mux {
+					pins = "gpio60", "gpio61";
+					function = "blsp_uart0";
+					bias-disable;
+				};
+			};
+
+			spi_0_pins: spi_0_pinmux {
+				pinmux {
+					function = "blsp_spi0";
+					pins = "gpio55", "gpio56", "gpio57";
+				};
+				pinmux_cs {
+					function = "gpio";
+					pins = "gpio54";
+				};
+				pinconf {
+					pins = "gpio55", "gpio56", "gpio57";
+					drive-strength = <12>;
+					bias-disable;
+				};
+				pinconf_cs {
+					pins = "gpio54";
+					drive-strength = <2>;
+					bias-disable;
+					output-high;
+				};
+			};
+		};
+
+		blsp_dma: dma@7884000 {
+			status = "ok";
+		};
+
+		spi_0: spi@78b5000 {
+			pinctrl-0 = <&spi_0_pins>;
+			pinctrl-names = "default";
+			status = "ok";
+			cs-gpios = <&tlmm 54 0>;
+
+			m25p80@0 {
+				#address-cells = <1>;
+				#size-cells = <1>;
+				compatible = "jedec,spi-nor";
+				reg = <0>;
+				spi-max-frequency = <24000000>;
+
+				/* partitions are passed via bootloader */
+			};
+		};
+
+		serial@78af000 {
+			pinctrl-0 = <&serial_pins>;
+			pinctrl-names = "default";
+			status = "ok";
+		};
+
+		cryptobam: dma@8e04000 {
+			status = "ok";
+		};
+
+		crypto@8e3a000 {
+			status = "ok";
+		};
+
+		watchdog@b017000 {
+			status = "ok";
+		};
+
+		usb2_hs_phy: hsphy@a8000 {
+			status = "ok";
+		};
+
+		usb2: usb2@60f8800 {
+			status = "ok";
+		};
+
+		mdio@90000 {
+			status = "okay";
+		};
+
+		ess-switch@c000000 {
+			status = "okay";
+		};
+
+		ess-psgmii@98000 {
+			status = "okay";
+		};
+
+		edma@c080000 {
+			status = "okay";
+		};
+
+		wifi@a000000 {
+			status = "okay";
+			qcom,ath10k-calibration-variant = "OM-A42";
+		};
+
+		wifi@a800000 {
+			status = "okay";
+			qcom,ath10k-calibration-variant = "OM-A42";
+		};
+	};
+
+	gpio-keys {
+		compatible = "gpio-keys";
+
+		reset {
+			label = "reset";
+			gpios = <&tlmm 59 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_RESTART>;
+		};
+	};
+
+	aliases {
+		led-boot = &power;
+		led-failsafe = &power;
+		led-running = &power;
+		led-upgrade = &power;
+	};
+
+	gpio-leds {
+		compatible = "gpio-leds";
+
+		red {
+			label = "a42:red:status";
+			gpios = <&tlmm 0 GPIO_ACTIVE_HIGH>;
+			linux,default-trigger = "default-off";
+		};
+
+		power: green {
+			label = "a42:green:status";
+			gpios = <&tlmm 1 GPIO_ACTIVE_HIGH>;
+		};
+
+		blue {
+			label = "a42:blue:status";
+			gpios = <&tlmm 2 GPIO_ACTIVE_HIGH>;
+			linux,default-trigger = "default-off";
+		};
+	};
+
+	watchdog {
+		compatible = "linux,wdt-gpio";
+		gpios = <&tlmm 5 GPIO_ACTIVE_LOW>;
+		hw_algo = "toggle";
+		/* hw_margin_ms is actually 300s but driver limits it to 60s */
+		hw_margin_ms = <60000>;
+		always-running;
+	};
+};
+
+&gmac0 {
+	qcom,phy_mdio_addr = <4>;
+	qcom,poll_required = <1>;
+	qcom,forced_speed = <1000>;
+	qcom,forced_duplex = <1>;
+	vlan_tag = <2 0x20>;
+};
+
+&gmac1 {
+	qcom,phy_mdio_addr = <3>;
+	qcom,poll_required = <1>;
+	qcom,forced_speed = <1000>;
+	qcom,forced_duplex = <1>;
+	vlan_tag = <1 0x10>;
+};