ipq40xx: add support for EnGenius EMR3500

SOC:     IPQ4018 / QCA Dakota
CPU:     Quad-Core ARMv7 Processor rev 5 (v7l) Cortex-A7
DRAM:    256 MiB
NOR:     32 MiB
ETH:     Qualcomm Atheros QCA8072 (2 ports)
USB:     1 x 2.0 (Host controller in the SoC)
WLAN1:   Qualcomm Atheros QCA4018 2.4GHz 802.11bgn 2:2x2
WLAN2:   Qualcomm Atheros QCA4018 5GHz 802.11a/n/ac 2:2x2
INPUT:   RESET Button
LEDS:    White, Blue, Red, Orange

Flash instruction:

From EnGenius firmware to OpenWrt firmware:

In Firmware Upgrade page, upgrade your openwrt-ipq40xx-generic-engenius_emr3500-squashfs-factory.bin directly.

From OpenWrt firmware to EnGenius firmware:

1. Setup a TFTP server on your computer and configure static IP to 192.168.99.8
   Put the EnGenius firmware in the TFTP server directory on your computer.
2. Power up EMR3500. Press 4 and then press any key to enter u-boot.
3. Download EnGenius firmware
   (IPQ40xx) # tftpboot 0x84000000 openwrt-ipq40xx-emr3500-nor-fw-s.img
4. Flash the firmware
   (IPQ40xx) # imgaddr=0x84000000 && source 0x84000000:script
5. Reboot
   (IPQ40xx) # reset

Signed-off-by: Yen-Ting-Shen <frank.shen@senao.com>
[squashed update patch, updated to 5.4, dropped BOARD_NAME,
migrated to SOC]
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>

1 files changed, 235 insertions, 0 deletions

diff --git a/target/linux/ipq40xx/files-5.4/arch/arm/boot/dts/qcom-ipq4018-emr3500.dts b/target/linux/ipq40xx/files-5.4/arch/arm/boot/dts/qcom-ipq4018-emr3500.dts
new file mode 100644
index 0000000000..50067aaa91
--- /dev/null
+++ b/target/linux/ipq40xx/files-5.4/arch/arm/boot/dts/qcom-ipq4018-emr3500.dts
@@ -0,0 +1,235 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "qcom-ipq4019.dtsi"
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+#include <dt-bindings/soc/qcom,tcsr.h>
+
+/ {
+	model = "EnGenius EMR3500";
+	compatible = "engenius,emr3500";
+
+	soc {
+		rng@22000 {
+			status = "okay";
+		};
+
+		mdio@90000 {
+			status = "okay";
+		};
+
+		ess-psgmii@98000 {
+			status = "okay";
+		};
+
+		tcsr@1949000 {
+			compatible = "qcom,tcsr";
+			reg = <0x1949000 0x100>;
+			qcom,wifi_glb_cfg = <TCSR_WIFI_GLB_CFG>;
+		};
+
+		ess_tcsr@1953000 {
+			compatible = "qcom,tcsr";
+			reg = <0x1953000 0x1000>;
+			qcom,ess-interface-select = <TCSR_ESS_PSGMII>;
+		};
+
+		tcsr@1957000 {
+			compatible = "qcom,tcsr";
+			reg = <0x1957000 0x100>;
+			qcom,wifi_noc_memtype_m0_m2 = <TCSR_WIFI_NOC_MEMTYPE_M0_M2>;
+		};
+
+		usb2_hs_phy: hsphy@a8000 {
+			status = "okay";
+		};
+
+		crypto@8e3a000 {
+			status = "okay";
+		};
+
+		watchdog@b017000 {
+			status = "okay";
+		};
+
+		ess-switch@c000000 {
+			status = "okay";
+		};
+
+		edma@c080000 {
+			status = "okay";
+		};
+	};
+
+	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;
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		power: white {
+			label = "emr3500:white:power";
+			gpios = <&tlmm 4 GPIO_ACTIVE_HIGH>;
+		};
+
+		blue {
+			label = "emr3500:blue";
+			gpios = <&tlmm 2 GPIO_ACTIVE_HIGH>;
+		};
+
+		red {
+			label = "emr3500:red";
+			gpios = <&tlmm 0 GPIO_ACTIVE_HIGH>;
+		};
+
+		orange {
+			label = "emr3500:orange";
+			gpios = <&tlmm 1 GPIO_ACTIVE_HIGH>;
+		};
+	};
+};
+
+&tlmm {
+	serial_pins: serial_pinmux {
+		mux {
+			pins = "gpio60", "gpio61";
+			function = "blsp_uart0";
+			bias-disable;
+		};
+	};
+
+	spi_0_pins: spi_0_pinmux {
+		pin {
+			function = "blsp_spi0";
+			pins = "gpio54", "gpio55", "gpio56", "gpio57";
+			drive-strength = <12>;
+			bias-disable;
+		};
+		pin_cs {
+			function = "gpio";
+			pins = "gpio54";
+			drive-strength = <2>;
+			bias-disable;
+			output-high;
+		};
+	};
+};
+
+&blsp_dma {
+	status = "okay";
+};
+
+&blsp1_spi1 {
+	pinctrl-0 = <&spi_0_pins>;
+	pinctrl-names = "default";
+	status = "okay";
+	cs-gpios = <&tlmm 54 GPIO_ACTIVE_HIGH>;
+
+	m25p80@0 {
+		compatible = "jedec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <24000000>;
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			partition@0 {
+				label = "0:SBL1";
+				reg = <0x00000000 0x00040000>;
+				read-only;
+			};
+			partition@40000 {
+				label = "0:MIBIB";
+				reg = <0x00040000 0x00020000>;
+				read-only;
+			};
+			partition@60000 {
+				label = "0:QSEE";
+				reg = <0x00060000 0x00060000>;
+				read-only;
+			};
+			partition@c0000 {
+				label = "0:CDT";
+				reg = <0x000c0000 0x00010000>;
+				read-only;
+			};
+			partition@d0000 {
+				label = "0:DDRPARAMS";
+				reg = <0x000d0000 0x00010000>;
+				read-only;
+			};
+			partition@e0000 {
+				label = "0:APPSBLENV";
+				reg = <0x000e0000 0x00010000>;
+				read-only;
+			};
+			partition@f0000 {
+				label = "0:APPSBL";
+				reg = <0x000f0000 0x00080000>;
+				read-only;
+			};
+			partition@170000 {
+				label = "0:ART";
+				reg = <0x00170000 0x00010000>;
+				read-only;
+			};
+			partition@180000 {
+				label = "userconfig";
+				reg = <0x00180000 0x00080000>;
+				read-only;
+			};
+			partition@200000 {
+				compatible = "denx,fit";
+				label = "firmware";
+				reg = <0x200000 0x1e00000>;
+			};
+		};
+	};
+};
+
+&blsp1_uart1 {
+	pinctrl-0 = <&serial_pins>;
+	pinctrl-names = "default";
+	status = "okay";
+};
+
+&cryptobam {
+	status = "okay";
+};
+
+&gmac0 {
+	vlan_tag = <1 0x10>;
+};
+
+&gmac1 {
+	vlan_tag = <2 0x20>;
+};
+
+&usb2_hs_phy {
+	status = "okay";
+};
+
+&wifi0 {
+	status = "okay";
+	qcom,ath10k-calibration-variant = "EnGenius-EMR3500";
+};
+
+&wifi1 {
+	status = "okay";
+	qcom,ath10k-calibration-variant = "EnGenius-EMR3500";
+};