ar71xx: add support for Wallys DR531

Wallys DR531 is based on Qualcomm Atheros QCA9531 v2.
Short specification:

- 550/400/200 MHz (CPU/DDR/AHB)
- 2x 10/100 Mbps Ethernet
- 64 MB of RAM (DDR2)
- 8 MB of FLASH
- 2T2R 2.4 GHz with external PA (SE2576L), up to 30 dBm
- 2x MMCX connectors
- mini-PCIe connector with PCIe/USB buses and SIM slot
- 7x LED, 1x button, 1x optional buzzer
- UART, (E)JTAG and LED headers

Default configuration:

- WAN on eth1 (RJ45 near DC jack)
- LAN on eth0 (RJ45 near button)
- S4 LED set to be status LED
- all LEDs configurable form user space
- button configured for reset

Flash instruction (do it under U-Boot, using UART):

1. tftp 0x80060000 lede-ar71xx-generic-dr531-squashfs-sysupgrade.bin
2. erase 0x9f050000 +$filesize
3. cp.b $fileaddr 0x9f050000 $filesize
4. setenv bootcmd "bootm 0x9f050000"
5. saveenv && reset

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

4 files changed, 167 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 52b9b5527e..9ab6fed9b7 100644
--- a/target/linux/ar71xx/files/arch/mips/ath79/Kconfig.openwrt
+++ b/target/linux/ar71xx/files/arch/mips/ath79/Kconfig.openwrt
@@ -522,6 +522,16 @@ config ATH79_MACH_DR344
 	select ATH79_DEV_USB
 	select ATH79_DEV_WMAC
 
+config ATH79_MACH_DR531
+	bool "Wallys DR531 board 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_USB
+	select ATH79_DEV_WMAC
+
 config ATH79_MACH_DRAGINO2
 	bool "DRAGINO V2 support"
 	select SOC_AR933X
diff --git a/target/linux/ar71xx/files/arch/mips/ath79/Makefile b/target/linux/ar71xx/files/arch/mips/ath79/Makefile
index f8b0b2bb5a..33c274fcc4 100644
--- a/target/linux/ar71xx/files/arch/mips/ath79/Makefile
+++ b/target/linux/ar71xx/files/arch/mips/ath79/Makefile
@@ -80,6 +80,7 @@ obj-$(CONFIG_ATH79_MACH_DIR_615_I1)	+= mach-dir-615-i1.o
 obj-$(CONFIG_ATH79_MACH_DIR_825_B1)	+= mach-dir-825-b1.o
 obj-$(CONFIG_ATH79_MACH_DIR_825_C1)	+= mach-dir-825-c1.o
 obj-$(CONFIG_ATH79_MACH_DR344)	+= mach-dr344.o
+obj-$(CONFIG_ATH79_MACH_DR531)		+= mach-dr531.o
 obj-$(CONFIG_ATH79_MACH_DRAGINO2)	+= mach-dragino2.o
 obj-$(CONFIG_ATH79_MACH_ESR900)	+= mach-esr900.o
 obj-$(CONFIG_ATH79_MACH_EW_DORIN)	+= mach-ew-dorin.o
diff --git a/target/linux/ar71xx/files/arch/mips/ath79/mach-dr531.c b/target/linux/ar71xx/files/arch/mips/ath79/mach-dr531.c
new file mode 100644
index 0000000000..b638a9001c
--- /dev/null
+++ b/target/linux/ar71xx/files/arch/mips/ath79/mach-dr531.c
@@ -0,0 +1,155 @@
+/*
+ * Wallys DR531 board support
+ *
+ * Copyright (C) 2016 Piotr Dymacz <pepe2k@gmail.com>
+ *
+ * Based on mach-wpj531.c
+ *
+ * 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/pci.h>
+#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-ap9x-pci.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"
+#include "pci.h"
+
+#define DR531_GPIO_BUZZER	4
+#define DR531_GPIO_LED_WAN	11
+#define DR531_GPIO_LED_LAN	14
+#define DR531_GPIO_LED_SIG1	12
+#define DR531_GPIO_LED_SIG2	16
+#define DR531_GPIO_LED_SIG3	15
+#define DR531_GPIO_LED_SIG4	13
+
+#define DR531_GPIO_BTN_RESET	17
+
+#define DR531_KEYS_POLL_INTERVAL	20	/* msecs */
+#define DR531_KEYS_DEBOUNCE_INTERVAL	(3 * DR531_KEYS_POLL_INTERVAL)
+
+#define DR531_MAC0_OFFSET		0x0
+#define DR531_MAC1_OFFSET		0x8
+#define DR531_WMAC_CALDATA_OFFSET	0x1000
+
+static struct gpio_led dr531_leds_gpio[] __initdata = {
+	{
+		.name		= "dr531:green:wan",
+		.gpio		= DR531_GPIO_LED_WAN,
+		.active_low	= 1,
+	},
+	{
+		.name		= "dr531:green:lan",
+		.gpio		= DR531_GPIO_LED_LAN,
+		.active_low	= 1,
+	},
+	{
+		.name		= "dr531:green:sig1",
+		.gpio		= DR531_GPIO_LED_SIG1,
+		.active_low	= 1,
+	},
+	{
+		.name		= "dr531:green:sig2",
+		.gpio		= DR531_GPIO_LED_SIG2,
+		.active_low	= 1,
+	},
+	{
+		.name		= "dr531:green:sig3",
+		.gpio		= DR531_GPIO_LED_SIG3,
+		.active_low	= 1,
+	},
+	{
+		.name		= "dr531:green:sig4",
+		.gpio		= DR531_GPIO_LED_SIG4,
+		.active_low	= 1,
+	},
+	{
+		.name		= "dr531:buzzer",
+		.gpio		= DR531_GPIO_BUZZER,
+		.active_low	= 0,
+	}
+};
+
+static struct gpio_keys_button dr531_gpio_keys[] __initdata = {
+	{
+		.desc		= "reset",
+		.type		= EV_KEY,
+		.code		= KEY_RESTART,
+		.debounce_interval = DR531_KEYS_DEBOUNCE_INTERVAL,
+		.gpio		= DR531_GPIO_BTN_RESET,
+		.active_low	= 1,
+	},
+};
+
+static void __init dr531_gpio_setup(void)
+{
+	ath79_gpio_direction_select(DR531_GPIO_BUZZER, true);
+	ath79_gpio_direction_select(DR531_GPIO_LED_WAN, true);
+	ath79_gpio_direction_select(DR531_GPIO_LED_LAN, true);
+	ath79_gpio_direction_select(DR531_GPIO_LED_SIG1, true);
+	ath79_gpio_direction_select(DR531_GPIO_LED_SIG2, true);
+	ath79_gpio_direction_select(DR531_GPIO_LED_SIG3, true);
+	ath79_gpio_direction_select(DR531_GPIO_LED_SIG4, true);
+
+	ath79_gpio_output_select(DR531_GPIO_BUZZER, 0);
+	ath79_gpio_output_select(DR531_GPIO_LED_WAN, 0);
+	ath79_gpio_output_select(DR531_GPIO_LED_LAN, 0);
+
+	ath79_register_leds_gpio(-1, ARRAY_SIZE(dr531_leds_gpio),
+				 dr531_leds_gpio);
+
+	ath79_register_gpio_keys_polled(-1, DR531_KEYS_POLL_INTERVAL,
+					ARRAY_SIZE(dr531_gpio_keys),
+					dr531_gpio_keys);
+}
+
+static void __init dr531_setup(void)
+{
+	u8 *art = (u8 *) KSEG1ADDR(0x1fff0000);
+	u8 *mac = (u8 *) KSEG1ADDR(0x1f03f810);
+
+	ath79_register_m25p80(NULL);
+
+	dr531_gpio_setup();
+
+	ath79_setup_ar933x_phy4_switch(false, false);
+
+	ath79_register_mdio(0, 0x0);
+
+	/* LAN */
+	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 + DR531_MAC1_OFFSET, 0);
+	ath79_register_eth(0);
+
+	/* WAN */
+	ath79_switch_data.phy4_mii_en = 1;
+	ath79_eth1_data.duplex = DUPLEX_FULL;
+	ath79_eth1_data.phy_if_mode = PHY_INTERFACE_MODE_GMII;
+	ath79_eth1_data.speed = SPEED_1000;
+	ath79_switch_data.phy_poll_mask |= BIT(4);
+	ath79_init_mac(ath79_eth1_data.mac_addr, mac + DR531_MAC0_OFFSET, 0);
+	ath79_register_eth(1);
+
+	ath79_register_wmac(art + DR531_WMAC_CALDATA_OFFSET, NULL);
+
+	ath79_register_pci();
+	ath79_register_usb();
+}
+
+MIPS_MACHINE(ATH79_MACH_DR531, "DR531", "Wallys DR531", dr531_setup);
diff --git a/target/linux/ar71xx/files/arch/mips/ath79/machtypes.h b/target/linux/ar71xx/files/arch/mips/ath79/machtypes.h
index f40b4a43b5..3425ce901b 100644
--- a/target/linux/ar71xx/files/arch/mips/ath79/machtypes.h
+++ b/target/linux/ar71xx/files/arch/mips/ath79/machtypes.h
@@ -72,6 +72,7 @@ enum ath79_mach_type {
 	ATH79_MACH_DLAN_PRO_500_WP,	/* devolo dLAN pro 500 Wireless+ */
 	ATH79_MACH_DLAN_PRO_1200_AC,	/* devolo dLAN pro 1200+ WiFi ac*/
 	ATH79_MACH_DR344,		/* Wallys DR344 */
+	ATH79_MACH_DR531,		/* Wallys DR531 */
 	ATH79_MACH_DRAGINO2,		/* Dragino Version 2 */
 	ATH79_MACH_ESR900,		/* EnGenius ESR900 */
 	ATH79_MACH_EW_DORIN,		/* embedded wireless Dorin Platform */