ar71xx:add support for E750G v8

Qxwlan E750G v8 is based on Qualcomm QCA9344.

Specification:

 - 560/450/225 MHz (CPU/DDR/AHB)
 - 128 MB of RAM (DDR2)
 - 8/16 MB of FLASH (SPI NOR)
 - 2T2R 2.4G GHz (AR9344)
 - 2x 10/100 Mbps Ethernet (PoE support)
 - 2x 10/100/1000 Mbps Ethernet
 - 7x LED (6 driven by GPIO)
 - 1x button (reset)
 - 1x DC jack for main power input (9-48 V)
 - UART (J23) and LEDs (J2) headers on PCB

Flash instruction (using U-Boot CLI and tftp server):

 - Configure PC with static IP 192.168.1.10 and tftp server.
 - Rename "sysupgrade" filename to "firmware.bin" and place it in tftp
   server directory.
 - Connect PC with one of RJ45 ports, power up the board and press
   "enter" key to access U-Boot CLI.
 - Use the following command to update the device to OpenWrt: "run lfw".

Flash instruction (using U-Boot web-based recovery):

 - Configure PC with static IP 192.168.1.xxx(2-254)/24.
 - Connect PC with one of RJ45 ports, press the reset button, power up
   the board and keep button pressed for around 6-7 seconds, until LEDs
   start flashing.
 - Open your browser and enter 192.168.1.1, select "sysupgrade" image
   and click the upgrade button.

Signed-off-by: 张鹏 <sd20@qxwlan.com>
(cherry picked from commit 53a45020135b504cb4bee0fa8d98c8eaf6391066)

4 files changed, 164 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 14cd19f1f2..e7655b3c02 100644
--- a/target/linux/ar71xx/files/arch/mips/ath79/Kconfig.openwrt
+++ b/target/linux/ar71xx/files/arch/mips/ath79/Kconfig.openwrt
@@ -744,6 +744,17 @@ config ATH79_MACH_E750A_V4
 	select ATH79_DEV_USB
 	select ATH79_DEV_WMAC
 
+config ATH79_MACH_E750G_V8
+	bool "Qxwlan E750G v8 support"
+	select SOC_AR934X
+	select ATH79_DEV_AP9X_PCI if PCI
+	select ATH79_DEV_ETH
+	select ATH79_DEV_GPIO_BUTTONS
+	select ATH79_DEV_LEDS_GPIO
+	select ATH79_DEV_M25P80
+	select ATH79_DEV_USB
+	select ATH79_DEV_WMAC
+
 config ATH79_MACH_ESR900
 	bool "EnGenius ESR900 board support"
 	select SOC_QCA955X
diff --git a/target/linux/ar71xx/files/arch/mips/ath79/Makefile b/target/linux/ar71xx/files/arch/mips/ath79/Makefile
index 84b61dff9c..8800a7de10 100644
--- a/target/linux/ar71xx/files/arch/mips/ath79/Makefile
+++ b/target/linux/ar71xx/files/arch/mips/ath79/Makefile
@@ -115,6 +115,7 @@ obj-$(CONFIG_ATH79_MACH_E1700AC_V2)		+= mach-e1700ac-v2.o
 obj-$(CONFIG_ATH79_MACH_E558_V2)		+= mach-e558-v2.o
 obj-$(CONFIG_ATH79_MACH_E600G_V2)		+= mach-e600g-v2.o
 obj-$(CONFIG_ATH79_MACH_E750A_V4)		+= mach-e750a-v4.o
+obj-$(CONFIG_ATH79_MACH_E750G_V8)		+= mach-e750g-v8.o
 obj-$(CONFIG_ATH79_MACH_EAP120)			+= mach-eap120.o
 obj-$(CONFIG_ATH79_MACH_EAP300V2)		+= mach-eap300v2.o
 obj-$(CONFIG_ATH79_MACH_EAP7660D)		+= mach-eap7660d.o
diff --git a/target/linux/ar71xx/files/arch/mips/ath79/mach-e750g-v8.c b/target/linux/ar71xx/files/arch/mips/ath79/mach-e750g-v8.c
new file mode 100644
index 0000000000..72d1349123
--- /dev/null
+++ b/target/linux/ar71xx/files/arch/mips/ath79/mach-e750g-v8.c
@@ -0,0 +1,151 @@
+/*
+ *  Qxwlan E750G v8 board support
+ *
+ *  Copyright (C) 2017 Peng Zhang <sd20@qxwlan.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/phy.h>
+#include <linux/platform_device.h>
+#include <linux/ath9k_platform.h>
+#include <linux/ar8216_platform.h>
+
+#include <asm/mach-ath79/ar71xx_regs.h>
+
+#include "common.h"
+#include "pci.h"
+#include "dev-ap9x-pci.h"
+#include "dev-gpio-buttons.h"
+#include "dev-eth.h"
+#include "dev-usb.h"
+#include "dev-leds-gpio.h"
+#include "dev-m25p80.h"
+#include "dev-spi.h"
+#include "dev-wmac.h"
+#include "machtypes.h"
+
+#define E750G_V8_GPIO_LED_SYS	14
+#define E750G_V8_GPIO_LED_DS20	15
+#define E750G_V8_GPIO_LED_DS10	20
+#define E750G_V8_GPIO_LED_WLAN	21
+
+#define E750G_V8_GPIO_BTN_RESET	12
+
+#define E750G_V8_KEYS_POLL_INTERVAL	20	/* msecs */
+#define E750G_V8_KEYS_DEBOUNCE_INTERVAL	(3 * E750G_V8_KEYS_POLL_INTERVAL)
+
+static struct gpio_led e750g_v8_leds_gpio[] __initdata = {
+	{
+		.name		= "e750g-v8:green:system",
+		.gpio		= E750G_V8_GPIO_LED_SYS,
+		.active_low	= 1,
+	},
+	{
+		.name		= "e750g-v8:green:ds10",
+		.gpio		= E750G_V8_GPIO_LED_DS10,
+		.active_low	= 1,
+	},
+	{
+		.name		= "e750g-v8:green:ds20",
+		.gpio		= E750G_V8_GPIO_LED_DS20,
+		.active_low	= 1,
+	},
+	{
+		.name		= "e750g-v8:green:wlan",
+		.gpio		= E750G_V8_GPIO_LED_WLAN,
+		.active_low	= 1,
+	},
+};
+
+static struct gpio_keys_button e750g_v8_gpio_keys[] __initdata = {
+	{
+		.desc		= "reset",
+		.type		= EV_KEY,
+		.code		= KEY_RESTART,
+		.debounce_interval = E750G_V8_KEYS_DEBOUNCE_INTERVAL,
+		.gpio		= E750G_V8_GPIO_BTN_RESET,
+		.active_low	= 1,
+	},
+};
+
+static const struct ar8327_led_info e750g_v8_leds_qca8334[] = {
+	AR8327_LED_INFO(PHY1_0, HW, "e750g-v8:green:lan"),
+	AR8327_LED_INFO(PHY2_0, HW, "e750g-v8:green:wan"),
+};
+
+static struct ar8327_pad_cfg e750g_v8_ar8327_pad0_cfg = {
+	.mode = AR8327_PAD_MAC_RGMII,
+	.txclk_delay_en = true,
+	.rxclk_delay_en = true,
+	.txclk_delay_sel = AR8327_CLK_DELAY_SEL1,
+	.rxclk_delay_sel = AR8327_CLK_DELAY_SEL2,
+	.mac06_exchange_dis = true,
+};
+
+static struct ar8327_led_cfg e750g_v8_ar8327_led_cfg = {
+	.led_ctrl0 = 0x00000000,
+	.led_ctrl1 = 0xc737c737,
+	.led_ctrl2 = 0x00000000,
+	.led_ctrl3 = 0x00c30c00,
+	.open_drain = true,
+};
+
+static struct ar8327_platform_data e750g_v8_ar8327_data = {
+	.pad0_cfg = &e750g_v8_ar8327_pad0_cfg,
+	.port0_cfg = {
+		.force_link = 1,
+		.speed = AR8327_PORT_SPEED_1000,
+		.duplex = 1,
+		.txpause = 1,
+		.rxpause = 1,
+	},
+	.led_cfg = &e750g_v8_ar8327_led_cfg,
+	.leds = e750g_v8_leds_qca8334,
+	.num_leds = ARRAY_SIZE(e750g_v8_leds_qca8334),
+};
+
+static struct mdio_board_info e750g_v8_mdio0_info[] = {
+	{
+		.bus_id = "ag71xx-mdio.0",
+		.phy_addr = 0,
+		.platform_data = &e750g_v8_ar8327_data,
+	},
+};
+
+static void __init e750g_v8_setup(void)
+{
+	u8 *mac = (u8 *) KSEG1ADDR(0x1f050400);
+	u8 *art = (u8 *) KSEG1ADDR(0x1f061000);
+
+	ath79_register_m25p80(NULL);
+	ath79_register_leds_gpio(-1, ARRAY_SIZE(e750g_v8_leds_gpio),
+				 e750g_v8_leds_gpio);
+	ath79_register_gpio_keys_polled(-1, E750G_V8_KEYS_POLL_INTERVAL,
+					ARRAY_SIZE(e750g_v8_gpio_keys),
+					e750g_v8_gpio_keys);
+
+	mdiobus_register_board_info(e750g_v8_mdio0_info,
+					ARRAY_SIZE(e750g_v8_mdio0_info));
+
+	ath79_register_mdio(0, 0x0);
+	ath79_setup_ar934x_eth_cfg(AR934X_ETH_CFG_RGMII_GMAC0 |
+				   AR934X_ETH_CFG_SW_ONLY_MODE);
+
+	/* GMAC0 is connected to an AR8327 switch */
+	ath79_eth0_data.phy_if_mode = PHY_INTERFACE_MODE_RGMII;
+	ath79_eth0_data.phy_mask = BIT(0);
+	ath79_eth0_data.mii_bus_dev = &ath79_mdio0_device.dev;
+	ath79_eth0_pll_data.pll_1000 = 0x06000000;
+	ath79_init_mac(ath79_eth0_data.mac_addr, mac, 0);
+	ath79_register_eth(0);
+
+	ath79_register_pci();
+	ath79_register_usb();
+	ath79_register_wmac(art, NULL);
+}
+
+MIPS_MACHINE(ATH79_MACH_E750G_V8, "E750G-V8", "Qxwlan E750G v8",
+		e750g_v8_setup);
diff --git a/target/linux/ar71xx/files/arch/mips/ath79/machtypes.h b/target/linux/ar71xx/files/arch/mips/ath79/machtypes.h
index c33c02037d..390ec0b2c3 100644
--- a/target/linux/ar71xx/files/arch/mips/ath79/machtypes.h
+++ b/target/linux/ar71xx/files/arch/mips/ath79/machtypes.h
@@ -109,6 +109,7 @@ enum ath79_mach_type {
 	ATH79_MACH_E600G_V2,			/* Qxwlan E600G v2 */
 	ATH79_MACH_E600GAC_V2,			/* Qxwlan E600GAC v2 */
 	ATH79_MACH_E750A_V4,			/* Qxwlan E750A v4 */
+	ATH79_MACH_E750G_V8,			/* Qxwlan E750G v8 */
 	ATH79_MACH_EAP120,			/* TP-LINK EAP120 */
 	ATH79_MACH_EAP300V2,			/* EnGenius EAP300 v2 */
 	ATH79_MACH_EAP7660D,			/* Senao EAP7660D */