ar71xx: add support for TP-LINK Archer C7 v4

TP-Link Archer C7 v4 is a dual-band AC1750 router, based on Qualcomm/Atheros
QCA9561+QCA9888.

Specification:

- 775/650/258 MHz (CPU/DDR/AHB)
- 128 MB of RAM (DDR2)
- 16 MB of FLASH (SPI NOR)
- 3T3R 2.4 GHz
- 3T3R 5 GHz
- 5x 10/100/1000 Mbps Ethernet
- 7x LED, 2x button
- UART header on PCB

Flash instruction:
1. Upload lede-ar71xx-generic-archer-c7-v4-squashfs-factory.bin via Web interface

Flash instruction using TFTP recovery:
1. Set PC to fixed ip address 192.168.0.66
2. Download lede-ar71xx-generic-archer-c7-v4-squashfs-factory.bin
and rename it to ArcherC7v4_tp_recovery.bin
3. Start a tftp server with the file tp_recovery.bin in its root directory
4. Turn off the router
5. Press and hold Reset button
6. Turn on router with the reset button pressed and wait ~15 seconds
7. Release the reset button and after a short time
the firmware should be transferred from the tftp server
8. Wait ~30 second to complete recovery.

Flash instruction under U-Boot, using UART:

1. tftp 0x81000000 lede-ar71xx-...-sysupgrade.bin
2. erase 0x9f040000 +$filesize
3. cp.b $fileaddr 0x9f040000 $filesize
4. reset

Signed-off-by: Felix Fietkau <nbd@nbd.name>

1 files changed, 260 insertions, 0 deletions

diff --git a/target/linux/ar71xx/files/arch/mips/ath79/mach-archer-c7-v4.c b/target/linux/ar71xx/files/arch/mips/ath79/mach-archer-c7-v4.c
new file mode 100644
index 0000000000..64955c7994
--- /dev/null
+++ b/target/linux/ar71xx/files/arch/mips/ath79/mach-archer-c7-v4.c
@@ -0,0 +1,260 @@
+
+/*
+ * Atheros ARCHER_C7 reference board support
+ *
+ * Copyright (c) 2017 Felix Fietkau <nbd@nbd.name>
+ * Copyright (c) 2014 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2012 Gabor Juhos <juhosg@openwrt.org>
+ *
+ * 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 <linux/platform_device.h>
+#include <linux/ath9k_platform.h>
+#include <linux/ar8216_platform.h>
+#include <linux/proc_fs.h>
+#include <linux/gpio.h>
+#include <linux/spi/spi_gpio.h>
+#include <linux/spi/74x164.h>
+
+#include <asm/mach-ath79/ar71xx_regs.h>
+
+#include "common.h"
+#include "dev-m25p80.h"
+#include "machtypes.h"
+#include "pci.h"
+#include "dev-eth.h"
+#include "dev-gpio-buttons.h"
+#include "dev-leds-gpio.h"
+#include "dev-spi.h"
+#include "dev-usb.h"
+#include "dev-wmac.h"
+
+
+#define ARCHER_C7_GPIO_SHIFT_OE		1
+#define ARCHER_C7_GPIO_SHIFT_SER	14
+#define ARCHER_C7_GPIO_SHIFT_SRCLK	15
+#define ARCHER_C7_GPIO_SHIFT_RCLK	16
+#define ARCHER_C7_GPIO_SHIFT_SRCLR	21
+
+#define ARCHER_C7_GPIO_BTN_RESET	5
+#define ARCHER_C7_GPIO_BTN_WPS_WIFI	2
+
+#define ARCHER_C7_GPIO_LED_WLAN5	9
+#define ARCHER_C7_GPIO_LED_POWER	6
+#define ARCHER_C7_GPIO_LED_USB1		7
+#define ARCHER_C7_GPIO_LED_USB2		8
+
+#define ARCHER_C7_74HC_GPIO_BASE	QCA956X_GPIO_COUNT
+#define ARCHER_C7_GPIO_LED_WPS		(ARCHER_C7_74HC_GPIO_BASE + 0)
+#define ARCHER_C7_GPIO_LED_LAN1		(ARCHER_C7_74HC_GPIO_BASE + 1)
+#define ARCHER_C7_GPIO_LED_LAN2		(ARCHER_C7_74HC_GPIO_BASE + 2)
+#define ARCHER_C7_GPIO_LED_LAN3		(ARCHER_C7_74HC_GPIO_BASE + 3)
+#define ARCHER_C7_GPIO_LED_LAN4		(ARCHER_C7_74HC_GPIO_BASE + 4)
+#define ARCHER_C7_GPIO_LED_WAN_GREEN	(ARCHER_C7_74HC_GPIO_BASE + 5)
+#define ARCHER_C7_GPIO_LED_WAN_AMBER	(ARCHER_C7_74HC_GPIO_BASE + 6)
+#define ARCHER_C7_GPIO_LED_WLAN2	(ARCHER_C7_74HC_GPIO_BASE + 7)
+
+#define ARCHER_C7_KEYS_POLL_INTERVAL        20     /* msecs */
+#define ARCHER_C7_KEYS_DEBOUNCE_INTERVAL    (3 * ARCHER_C7_KEYS_POLL_INTERVAL)
+
+#define ARCHER_C7_MAC0_OFFSET               0
+#define ARCHER_C7_MAC1_OFFSET               6
+#define ARCHER_C7_WMAC_CALDATA_OFFSET       0x1000
+
+#define ARCHER_C7_GPIO_MDC			3
+#define ARCHER_C7_GPIO_MDIO			4
+
+static struct spi_gpio_platform_data archer_c7_v4_spi_data = {
+	.sck		= ARCHER_C7_GPIO_SHIFT_SRCLK,
+	.miso		= SPI_GPIO_NO_MISO,
+	.mosi		= ARCHER_C7_GPIO_SHIFT_SER,
+	.num_chipselect	= 1,
+};
+
+static u8 archer_c7_v4_ssr_initdata __initdata = 0xff;
+
+static struct gen_74x164_chip_platform_data archer_c7_v4_ssr_data = {
+	.base = ARCHER_C7_74HC_GPIO_BASE,
+	.num_registers = 1,
+	.init_data = &archer_c7_v4_ssr_initdata,
+};
+
+static struct platform_device archer_c7_v4_spi_device = {
+	.name		= "spi_gpio",
+	.id		= 1,
+	.dev = {
+		.platform_data = &archer_c7_v4_spi_data,
+	},
+};
+
+static struct spi_board_info archer_c7_v4_spi_info[] = {
+	{
+		.bus_num		= 1,
+		.chip_select		= 0,
+		.max_speed_hz		= 10000000,
+		.modalias		= "74x164",
+		.platform_data		= &archer_c7_v4_ssr_data,
+		.controller_data	= (void *) ARCHER_C7_GPIO_SHIFT_RCLK,
+	},
+};
+
+static struct gpio_led archer_c7_v4_leds_gpio[] __initdata = {
+	{
+		.name		= "archer-c7-v4:green:power",
+		.gpio		= ARCHER_C7_GPIO_LED_POWER,
+		.active_low	= 1,
+	}, {
+		.name		= "archer-c7-v4:green:wps",
+		.gpio		= ARCHER_C7_GPIO_LED_WPS,
+		.active_low	= 1,
+	}, {
+		.name		= "archer-c7-v4:green:wlan2g",
+		.gpio		= ARCHER_C7_GPIO_LED_WLAN2,
+		.active_low	= 1,
+	}, {
+		.name		= "archer-c7-v4:green:wlan5g",
+		.gpio		= ARCHER_C7_GPIO_LED_WLAN5,
+		.active_low	= 1,
+	}, {
+		.name		= "archer-c7-v4:green:lan1",
+		.gpio		= ARCHER_C7_GPIO_LED_LAN1,
+		.active_low	= 1,
+	}, {
+		.name		= "archer-c7-v4:green:lan2",
+		.gpio		= ARCHER_C7_GPIO_LED_LAN2,
+		.active_low	= 1,
+	}, {
+		.name		= "archer-c7-v4:green:lan3",
+		.gpio		= ARCHER_C7_GPIO_LED_LAN3,
+		.active_low	= 1,
+	}, {
+		.name		= "archer-c7-v4:green:lan4",
+		.gpio		= ARCHER_C7_GPIO_LED_LAN4,
+		.active_low	= 1,
+	}, {
+		.name		= "archer-c7-v4:green:wan",
+		.gpio		=  ARCHER_C7_GPIO_LED_WAN_GREEN,
+		.active_low	= 1,
+	}, {
+		.name		= "archer-c7-v4:amber:wan",
+		.gpio		=  ARCHER_C7_GPIO_LED_WAN_AMBER,
+		.active_low	= 1,
+	}, {
+		.name		= "archer-c7-v4:green:usb1",
+		.gpio		=  ARCHER_C7_GPIO_LED_USB1,
+		.active_low	= 1,
+	}, {
+		.name		= "archer-c7-v4:green:usb2",
+		.gpio		=  ARCHER_C7_GPIO_LED_USB2,
+		.active_low	= 1,
+	},
+};
+
+static struct gpio_keys_button archer_c7_v4_gpio_keys[] __initdata = {
+        {
+                .desc           = "WPS and WIFI button",
+                .type           = EV_KEY,
+                .code           = KEY_WPS_BUTTON,
+                .debounce_interval = ARCHER_C7_KEYS_DEBOUNCE_INTERVAL,
+                .gpio           = ARCHER_C7_GPIO_BTN_WPS_WIFI,
+                .active_low     = 1,
+        },
+        {
+                .desc           = "Reset button",
+                .type           = EV_KEY,
+                .code           = KEY_RESTART,
+                .debounce_interval = ARCHER_C7_KEYS_DEBOUNCE_INTERVAL,
+                .gpio           = ARCHER_C7_GPIO_BTN_RESET,
+                .active_low     = 1,
+        },
+};
+
+static struct ar8327_pad_cfg archer_c7_v4_ar8337_pad0_cfg = {
+	.mode = AR8327_PAD_MAC_SGMII,
+	.sgmii_delay_en = true,
+};
+
+static struct ar8327_platform_data archer_c7_v4_ar8337_data = {
+	.pad0_cfg = &archer_c7_v4_ar8337_pad0_cfg,
+	.port0_cfg = {
+		.force_link = 1,
+		.speed = AR8327_PORT_SPEED_1000,
+		.duplex = 1,
+		.txpause = 1,
+		.rxpause = 1,
+	},
+};
+
+static struct mdio_board_info archer_c7_v4_mdio0_info[] = {
+	{
+		.bus_id = "ag71xx-mdio.0",
+		.phy_addr = 0,
+		.platform_data = &archer_c7_v4_ar8337_data,
+	},
+};
+
+
+static void __init archer_c7_v4_setup(void)
+{
+	u8 *art = (u8 *) KSEG1ADDR(0x1fff0000);
+	u8 *mac = (u8 *) KSEG1ADDR(0x1ff00008);
+
+	ath79_register_m25p80(NULL);
+
+	spi_register_board_info(archer_c7_v4_spi_info,
+				ARRAY_SIZE(archer_c7_v4_spi_info));
+
+	platform_device_register(&archer_c7_v4_spi_device);
+
+	gpio_request_one(ARCHER_C7_GPIO_SHIFT_OE,
+			 GPIOF_OUT_INIT_LOW | GPIOF_EXPORT_DIR_FIXED,
+			 "LED control");
+
+	gpio_request_one(ARCHER_C7_GPIO_SHIFT_SRCLR,
+			 GPIOF_OUT_INIT_HIGH | GPIOF_EXPORT_DIR_FIXED,
+			 "LED reset");
+
+	ath79_register_leds_gpio(-1, ARRAY_SIZE(archer_c7_v4_leds_gpio),
+				archer_c7_v4_leds_gpio);
+
+	ath79_register_gpio_keys_polled(-1, ARCHER_C7_KEYS_POLL_INTERVAL,
+					ARRAY_SIZE(archer_c7_v4_gpio_keys),
+					archer_c7_v4_gpio_keys);
+
+	ath79_register_usb();
+
+	ath79_gpio_output_select(ARCHER_C7_GPIO_MDC, QCA956X_GPIO_OUT_MUX_GE0_MDC);
+	ath79_gpio_output_select(ARCHER_C7_GPIO_MDIO, QCA956X_GPIO_OUT_MUX_GE0_MDO);
+
+	ath79_register_mdio(0, 0x0);
+
+	mdiobus_register_board_info(archer_c7_v4_mdio0_info,
+				    ARRAY_SIZE(archer_c7_v4_mdio0_info));
+
+	ath79_register_wmac(art + ARCHER_C7_WMAC_CALDATA_OFFSET, mac);
+	ath79_register_pci();
+
+	/* GMAC0 is connected to an AR8337 switch */
+	ath79_init_mac(ath79_eth0_data.mac_addr, mac, 0);
+	ath79_eth0_data.phy_if_mode = PHY_INTERFACE_MODE_SGMII;
+	ath79_eth0_data.speed = SPEED_1000;
+	ath79_eth0_data.duplex = DUPLEX_FULL;
+	ath79_eth0_data.phy_mask = BIT(0);
+	ath79_eth0_data.mii_bus_dev = &ath79_mdio0_device.dev;
+	ath79_register_eth(0);
+}
+
+MIPS_MACHINE(ATH79_MACH_ARCHER_C7_V4, "ARCHER-C7-V4", "TP-LINK Archer C7 v4",
+	     archer_c7_v4_setup);