ar71xx: add support for OCEDO Koala

This commit adds support for the OCEDO Koala

SOC:	Qualcomm QCA9558 (Scorpion)
RAM:    128MB
FLASH:  16MiB
WLAN1:  QCA9558 2.4 GHz 802.11bgn 3x3
WLAN2:  QCA9880 5 GHz 802.11nac 3x3
INPUT:  RESET button
LED:    Power, LAN, WiFi 2.4, WiFi 5, SYS
Serial: Header Next to Black metal shield
        Pinout is 3.3V - GND - TX - RX (Arrow Pad is 3.3V)
        The Serial setting is 115200-8-N-1.

Tested and working:
 - Ethernet
 - 2.4 GHz WiFi
 - 5 GHz WiFi
 - TFTP boot from ramdisk image
 - Installation via ramdisk image
 - OpenWRT sysupgrade
 - Buttons
 - LEDs

Installation seems to be possible only through booting an OpenWRT
ramdisk image.

Hold down the reset button while powering on the device. It will load a
ramdisk image named 'koala-uImage-initramfs-lzma.bin' from 192.168.100.8.

Note: depending on the present software, the device might also try to
pull a file called 'koala-uimage-factory'. Only the name differs, it
is still used as a ramdisk image.

Wait for the ramdisk image to boot. OpenWRT can be written to the flash
via sysupgrade or mtd.

Due to the flip-flop bootloader which we not (yet) support, you need to
set the partition the bootloader is selecting. It is possible from the
initramfs image with

 > fw_setenv bootcmd run bootcmd_1

Afterwards you can reboot the device.

Signed-off-by: David Bauer <mail@david-bauer.net>
(cherry picked from commit e36f8b3f3980903d5cefc51fe274c19c7a0719f2)

4 files changed, 173 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 74da7418e2..5ea7a6f532 100644
--- a/target/linux/ar71xx/files/arch/mips/ath79/Kconfig.openwrt
+++ b/target/linux/ar71xx/files/arch/mips/ath79/Kconfig.openwrt
@@ -949,6 +949,16 @@ config ATH79_MACH_JWAP230
 	select ATH79_DEV_USB
 	select ATH79_DEV_WMAC
 
+config ATH79_MACH_KOALA
+	bool "OCEDO Koala board support"
+	select SOC_QCA955X
+	select ATH79_DEV_AP9X_PCI if PCI
+	select ATH79_DEV_GPIO_BUTTONS
+	select ATH79_DEV_ETH
+	select ATH79_DEV_LEDS_GPIO
+	select ATH79_DEV_M25P80
+	select ATH79_DEV_WMAC
+
 config ATH79_MACH_WAM250
 	bool "Samsung WAM250 support"
 	select SOC_AR934X
diff --git a/target/linux/ar71xx/files/arch/mips/ath79/Makefile b/target/linux/ar71xx/files/arch/mips/ath79/Makefile
index 898853e5c0..17529499ac 100644
--- a/target/linux/ar71xx/files/arch/mips/ath79/Makefile
+++ b/target/linux/ar71xx/files/arch/mips/ath79/Makefile
@@ -142,6 +142,7 @@ obj-$(CONFIG_ATH79_MACH_HORNET_UB)		+= mach-hornet-ub.o
 obj-$(CONFIG_ATH79_MACH_JA76PF)			+= mach-ja76pf.o
 obj-$(CONFIG_ATH79_MACH_JWAP003)		+= mach-jwap003.o
 obj-$(CONFIG_ATH79_MACH_JWAP230)		+= mach-jwap230.o
+obj-$(CONFIG_ATH79_MACH_KOALA)			+= mach-koala.o
 obj-$(CONFIG_ATH79_MACH_LAN_TURTLE)		+= mach-lan-turtle.o
 obj-$(CONFIG_ATH79_MACH_LIMA)			+= mach-lima.o
 obj-$(CONFIG_ATH79_MACH_MC_MAC1200R)		+= mach-mc-mac1200r.o
diff --git a/target/linux/ar71xx/files/arch/mips/ath79/mach-koala.c b/target/linux/ar71xx/files/arch/mips/ath79/mach-koala.c
new file mode 100644
index 0000000000..48354b4d2c
--- /dev/null
+++ b/target/linux/ar71xx/files/arch/mips/ath79/mach-koala.c
@@ -0,0 +1,161 @@
+/*
+ * OCEDO Koala board support
+ * Based on the MR1750 machine file
+ *
+ * Copyright (c) 2012 Qualcomm Atheros
+ * Copyright (c) 2012-2013 Marek Lindner <marek@open-mesh.com>
+ * Copyright (c) 2018 David Bauer <mail@david-bauer.net>
+ *
+ * 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/ar8216_platform.h>
+
+#include <asm/mach-ath79/ar71xx_regs.h>
+#include <linux/platform_data/phy-at803x.h>
+
+#include "common.h"
+#include "dev-ap9x-pci.h"
+#include "dev-gpio-buttons.h"
+#include "dev-eth.h"
+#include "dev-leds-gpio.h"
+#include "dev-m25p80.h"
+#include "dev-wmac.h"
+#include "machtypes.h"
+#include "pci.h"
+
+#define KOALA_GPIO_LED_POWER		22
+#define KOALA_GPIO_LED_WLAN_5G		13
+#define KOALA_GPIO_LED_WLAN_2G		23
+#define KOALA_GPIO_LED_WLAN_SYS		19
+
+#define KOALA_GPIO_BTN_RESET		17
+
+#define KOALA_KEYS_POLL_INTERVAL	20	/* msecs */
+#define KOALA_KEYS_DEBOUNCE_INTERVAL	(3 * KOALA_KEYS_POLL_INTERVAL)
+
+#define KOALA_LAN_MAC_OFFSET		0
+#define KOALA_WIFI2G_MAC_OFFSET		0x06
+#define KOALA_WMAC_CALDATA_OFFSET	0x1000
+
+static struct gpio_led koala_leds_gpio[] __initdata = {
+	{
+		.name		= "koala:green:power",
+		.gpio		= KOALA_GPIO_LED_POWER,
+		.active_low	= 1,
+	},
+	{
+		.name		= "koala:red:wlan58",
+		.gpio		= KOALA_GPIO_LED_WLAN_5G,
+		.active_low	= 1,
+	},
+	{
+		.name		= "koala:yellow:wlan2",
+		.gpio		= KOALA_GPIO_LED_WLAN_2G,
+		.active_low	= 1,
+	},
+	{
+		.name		= "koala:blue:sys",
+		.gpio		= KOALA_GPIO_LED_WLAN_SYS,
+		.active_low	= 1,
+		},
+};
+
+static struct gpio_keys_button koala_gpio_keys[] __initdata = {
+	{
+		.desc		= "Reset button",
+		.type		= EV_KEY,
+		.code		= KEY_RESTART,
+		.debounce_interval = KOALA_KEYS_DEBOUNCE_INTERVAL,
+		.gpio		= KOALA_GPIO_BTN_RESET,
+		.active_low	= 1,
+	},
+};
+
+static struct at803x_platform_data koala_at803x_data = {
+	.disable_smarteee = 1,
+	.enable_rgmii_rx_delay = 1,
+	.enable_rgmii_tx_delay = 0,
+	.fixup_rgmii_tx_delay = 1,
+};
+
+static struct mdio_board_info koala_mdio0_info[] = {
+	{
+		.bus_id = "ag71xx-mdio.0",
+		.phy_addr = 5,
+		.platform_data = &koala_at803x_data,
+	},
+};
+
+static void __init koala_setup_qca955x_eth_cfg(u32 mask,
+						unsigned int rxd,
+						unsigned int rxdv,
+						unsigned int txd,
+						unsigned int txe)
+{
+	void __iomem *base;
+	u32 t;
+
+	base = ioremap(QCA955X_GMAC_BASE, QCA955X_GMAC_SIZE);
+
+	t = mask;
+	t |= rxd << QCA955X_ETH_CFG_RXD_DELAY_SHIFT;
+	t |= rxdv << QCA955X_ETH_CFG_RDV_DELAY_SHIFT;
+	t |= txd << QCA955X_ETH_CFG_TXD_DELAY_SHIFT;
+	t |= txe << QCA955X_ETH_CFG_TXE_DELAY_SHIFT;
+
+	__raw_writel(t, base + QCA955X_GMAC_REG_ETH_CFG);
+
+	iounmap(base);
+}
+
+static void __init koala_setup(void)
+{
+	u8 *art = (u8 *)KSEG1ADDR(0x1fff0000);
+	u8 mac[6];
+
+	ath79_eth0_pll_data.pll_1000 = 0xae000000;
+	ath79_eth0_pll_data.pll_100 = 0xa0000101;
+	ath79_eth0_pll_data.pll_10 = 0xa0001313;
+
+	ath79_register_m25p80(NULL);
+
+	ath79_register_leds_gpio(-1, ARRAY_SIZE(koala_leds_gpio),
+				 koala_leds_gpio);
+	ath79_register_gpio_keys_polled(-1, KOALA_KEYS_POLL_INTERVAL,
+					ARRAY_SIZE(koala_gpio_keys),
+					koala_gpio_keys);
+
+	ath79_init_mac(mac, art + KOALA_WIFI2G_MAC_OFFSET, 0);
+	ath79_register_wmac(art + KOALA_WMAC_CALDATA_OFFSET, mac);
+	ath79_register_pci();
+
+	koala_setup_qca955x_eth_cfg(QCA955X_ETH_CFG_RGMII_EN, 3, 3, 0, 0);
+	ath79_register_mdio(0, 0x0);
+
+	mdiobus_register_board_info(koala_mdio0_info,
+				    ARRAY_SIZE(koala_mdio0_info));
+
+	ath79_init_mac(ath79_eth0_data.mac_addr, art + KOALA_LAN_MAC_OFFSET, 0);
+
+	/* GMAC0 is connected to the RMGII interface */
+	ath79_eth0_data.phy_if_mode = PHY_INTERFACE_MODE_RGMII;
+	ath79_eth0_data.phy_mask = BIT(5);
+	ath79_eth0_data.mii_bus_dev = &ath79_mdio0_device.dev;
+
+	ath79_register_eth(0);
+}
+
+MIPS_MACHINE(ATH79_MACH_KOALA, "KOALA", "OCEDO Koala", koala_setup);
diff --git a/target/linux/ar71xx/files/arch/mips/ath79/machtypes.h b/target/linux/ar71xx/files/arch/mips/ath79/machtypes.h
index 0d0d309ce8..5f2244d209 100644
--- a/target/linux/ar71xx/files/arch/mips/ath79/machtypes.h
+++ b/target/linux/ar71xx/files/arch/mips/ath79/machtypes.h
@@ -140,6 +140,7 @@ enum ath79_mach_type {
 	ATH79_MACH_JA76PF2,			/* jjPlus JA76PF2 */
 	ATH79_MACH_JWAP003,			/* jjPlus JWAP003 */
 	ATH79_MACH_JWAP230,			/* jjPlus JWAP230 */
+	ATH79_MACH_KOALA,			/* OCEDO Koala */
 	ATH79_MACH_LAN_TURTLE,			/* Hak5 LAN Turtle */
 	ATH79_MACH_LIMA,			/* 8devices Lima */
 	ATH79_MACH_MC_MAC1200R,			/* MERCURY MAC1200R */