ar71xx: add support for YunCore AP90Q

YunCore AP90Q is an outdoor CPE/AP based on Qualcomm/Atheros QCA9531 v2.
Short specification:

- 650/600/216 MHz (CPU/DDR/AHB)
- 2x 10/100 Mbps Ethernet, passive PoE support
- 64/128 MB of RAM (DDR2)
- 16 MB of FLASH
- 2T2R 2.4 GHz with external PA, up to 29 dBm
- 2x internal 5 dBi omni antennas
- 4x LED, 1x button
- UART (JP1) header on PCB

Flash instruction under U-Boot, using UART:

1. tftp 0x80060000 lede-ar71xx-generic-ap90q-squashfs-sysupgrade
2. erase 0x9f050000 +$filesize
3. cp.b $fileaddr 0x9f050000 $filesize
4. setenv bootcmd "bootm 0x9f050000"
5. saveenv && reset

Flash instruction under vendor fimrware, using telnet/SSH:

1. Connect PC with 192.168.1.x address to WAN port
2. Power up device, enter failsafe mode with button (no LED indicator!)
3. Change root password and reboot (mount_root, passwd ..., reboot -f)
4. Upload lede-ar71xx-generic-ap90q-squashfs-sysupgrade.bin to /tmp using SCP
5. Connect PC with 192.168.188.x address to LAN port, SSH to 192.168.188.253
6. Invoke:
- cd /tmp
- fw_setenv bootcmd "bootm 0x9f050000"
- mtd erase firmware
- mtd -r write lede-ar71xx-generic-ap90q-squashfs-sysupgrade.bin firmware

Signed-off-by: Piotr Dymacz <pepe2k@gmail.com>

4 files changed, 134 insertions, 0 deletions

diff --git a/target/linux/ar71xx/files/arch/mips/ath79/Kconfig.openwrt b/target/linux/ar71xx/files/arch/mips/ath79/Kconfig.openwrt
index 3a3ed14..e9431f1 100644
--- a/target/linux/ar71xx/files/arch/mips/ath79/Kconfig.openwrt
+++ b/target/linux/ar71xx/files/arch/mips/ath79/Kconfig.openwrt
@@ -174,6 +174,15 @@ config ATH79_MACH_AP83
 	select ATH79_DEV_USB
 	select ATH79_DEV_WMAC
 
+config ATH79_MACH_AP90Q
+	bool "YunCore AP90Q support"
+	select SOC_QCA953X
+	select ATH79_DEV_ETH
+	select ATH79_DEV_GPIO_BUTTONS
+	select ATH79_DEV_LEDS_GPIO
+	select ATH79_DEV_M25P80
+	select ATH79_DEV_WMAC
+
 config ATH79_MACH_AP96
 	bool "Atheros AP96 board support"
 	select SOC_AR71XX
diff --git a/target/linux/ar71xx/files/arch/mips/ath79/Makefile b/target/linux/ar71xx/files/arch/mips/ath79/Makefile
index 1924179..c0caccd 100644
--- a/target/linux/ar71xx/files/arch/mips/ath79/Makefile
+++ b/target/linux/ar71xx/files/arch/mips/ath79/Makefile
@@ -55,6 +55,7 @@ obj-$(CONFIG_ATH79_MACH_AP147)			+= mach-ap147.o
 obj-$(CONFIG_ATH79_MACH_AP152)			+= mach-ap152.o
 obj-$(CONFIG_ATH79_MACH_AP81)			+= mach-ap81.o
 obj-$(CONFIG_ATH79_MACH_AP83)			+= mach-ap83.o
+obj-$(CONFIG_ATH79_MACH_AP90Q)			+= mach-ap90q.o
 obj-$(CONFIG_ATH79_MACH_AP96)			+= mach-ap96.o
 obj-$(CONFIG_ATH79_MACH_ARCHER_C7)		+= mach-archer-c7.o
 obj-$(CONFIG_ATH79_MACH_ARDUINO_YUN)		+= mach-arduino-yun.o
diff --git a/target/linux/ar71xx/files/arch/mips/ath79/mach-ap90q.c b/target/linux/ar71xx/files/arch/mips/ath79/mach-ap90q.c
new file mode 100644
index 0000000..35e5781
--- /dev/null
+++ b/target/linux/ar71xx/files/arch/mips/ath79/mach-ap90q.c
@@ -0,0 +1,123 @@
+/*
+ * YunCore AP90Q board support
+ *
+ * Copyright (C) 2016 Piotr Dymacz <pepe2k@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ */
+
+#include <linux/gpio.h>
+#include <linux/platform_device.h>
+
+#include <asm/mach-ath79/ath79.h>
+#include <asm/mach-ath79/ar71xx_regs.h>
+
+#include "common.h"
+#include "dev-eth.h"
+#include "dev-gpio-buttons.h"
+#include "dev-leds-gpio.h"
+#include "dev-m25p80.h"
+#include "dev-usb.h"
+#include "dev-wmac.h"
+#include "machtypes.h"
+
+#define AP90Q_GPIO_LED_WAN	4
+#define AP90Q_GPIO_LED_WLAN	12
+#define AP90Q_GPIO_LED_LAN	16
+
+#define AP90Q_GPIO_BTN_RESET	17
+
+#define AP90Q_KEYS_POLL_INTERVAL	20
+#define AP90Q_KEYS_DEBOUNCE_INTERVAL	(3 * AP90Q_KEYS_POLL_INTERVAL)
+
+static struct gpio_led ap90q_leds_gpio[] __initdata = {
+	{
+		.name		= "ap90q:green:lan",
+		.gpio		= AP90Q_GPIO_LED_LAN,
+		.active_low	= 1,
+	},
+	{
+		.name		= "ap90q:green:wan",
+		.gpio		= AP90Q_GPIO_LED_WAN,
+		.active_low	= 1,
+	},
+	{
+		.name		= "ap90q:green:wlan",
+		.gpio		= AP90Q_GPIO_LED_WLAN,
+		.active_low	= 1,
+	},
+};
+
+static struct gpio_keys_button ap90q_gpio_keys[] __initdata = {
+	{
+		.desc		= "reset",
+		.type		= EV_KEY,
+		.code		= KEY_RESTART,
+		.debounce_interval = AP90Q_KEYS_DEBOUNCE_INTERVAL,
+		.gpio		= AP90Q_GPIO_BTN_RESET,
+		.active_low	= 1,
+	},
+};
+
+static void __init ap90q_gpio_setup(void)
+{
+	/* For LED on GPIO4 */
+	ath79_gpio_function_disable(AR934X_GPIO_FUNC_CLK_OBS4_EN);
+
+	ath79_gpio_direction_select(AP90Q_GPIO_LED_LAN, true);
+	ath79_gpio_direction_select(AP90Q_GPIO_LED_WAN, true);
+	ath79_gpio_direction_select(AP90Q_GPIO_LED_WLAN, true);
+
+	/* Mute LEDs on boot */
+	gpio_set_value(AP90Q_GPIO_LED_LAN, 1);
+	gpio_set_value(AP90Q_GPIO_LED_WAN, 1);
+
+	ath79_gpio_output_select(AP90Q_GPIO_LED_LAN, 0);
+	ath79_gpio_output_select(AP90Q_GPIO_LED_WAN, 0);
+	ath79_gpio_output_select(AP90Q_GPIO_LED_WLAN, 0);
+
+	ath79_register_leds_gpio(-1, ARRAY_SIZE(ap90q_leds_gpio),
+				 ap90q_leds_gpio);
+
+	ath79_register_gpio_keys_polled(-1, AP90Q_KEYS_POLL_INTERVAL,
+					ARRAY_SIZE(ap90q_gpio_keys),
+					ap90q_gpio_keys);
+}
+
+static void __init ap90q_setup(void)
+{
+	u8 *art = (u8 *) KSEG1ADDR(0x1fff1000);
+	u8 *mac = (u8 *) KSEG1ADDR(0x1fff0000);
+
+	ath79_register_m25p80(NULL);
+
+	ap90q_gpio_setup();
+
+	ath79_setup_ar933x_phy4_switch(false, false);
+
+	ath79_register_mdio(0, 0x0);
+
+	ath79_switch_data.phy4_mii_en = 1;
+	ath79_switch_data.phy_poll_mask |= BIT(4);
+
+	/* LAN */
+	ath79_eth1_data.duplex = DUPLEX_FULL;
+	ath79_eth1_data.phy_if_mode = PHY_INTERFACE_MODE_GMII;
+	ath79_eth1_data.speed = SPEED_1000;
+	ath79_init_mac(ath79_eth1_data.mac_addr, mac, 1);
+	ath79_register_eth(1);
+
+	/* WAN */
+	ath79_eth0_data.duplex = DUPLEX_FULL;
+	ath79_eth0_data.phy_if_mode = PHY_INTERFACE_MODE_MII;
+	ath79_eth0_data.speed = SPEED_100;
+	ath79_eth0_data.phy_mask = BIT(4);
+	ath79_init_mac(ath79_eth0_data.mac_addr, mac, 0);
+	ath79_register_eth(0);
+
+	ath79_register_wmac(art, NULL);
+}
+
+MIPS_MACHINE(ATH79_MACH_AP90Q, "AP90Q", "YunCore AP90Q", ap90q_setup);
diff --git a/target/linux/ar71xx/files/arch/mips/ath79/machtypes.h b/target/linux/ar71xx/files/arch/mips/ath79/machtypes.h
index 5e504b1..e69cf3b 100644
--- a/target/linux/ar71xx/files/arch/mips/ath79/machtypes.h
+++ b/target/linux/ar71xx/files/arch/mips/ath79/machtypes.h
@@ -38,6 +38,7 @@ enum ath79_mach_type {
 	ATH79_MACH_AP152,			/* Atheros AP152 reference board */
 	ATH79_MACH_AP81,			/* Atheros AP81 reference board */
 	ATH79_MACH_AP83,			/* Atheros AP83 */
+	ATH79_MACH_AP90Q,			/* YunCore AP90Q */
 	ATH79_MACH_AP96,			/* Atheros AP96 */
 	ATH79_MACH_ARCHER_C5,			/* TP-LINK Archer C5 board */
 	ATH79_MACH_ARCHER_C7,			/* TP-LINK Archer C7 board */