[OpenWrt-Devel] [PATCH v2] ath79: add support for Fritz!Box 4020

David Bauer mail at david-bauer.net
Wed Aug 15 20:15:15 EDT 2018 

This commit adds support for the AVM Fritz!Box 4020 WiFi-router.

SoC:   Qualcomm Atheros QCA9561 (Dragonfly) 750MHz
RAM:   Winbond W971GG6KB-25
FLASH: Macronix MX25L12835F
WiFi:  QCA9561 b/g/n 3x3 450Mbit/s
USB:   1x USB 2.0
IN:    WPS button, WiFi button
OUT:   Power LED green, Internet LED green, WLAN LED green,
       LAN LED green, INFO LED green, INFO LED red
UART:  Header Next to Black metal shield
       Pinout is 3.3V - RX - TX - GND (Square Pad is 3.3V)
       The Serial setting is 115200-8-N-1.

Tested and working:
 - Ethernet (LAN + WAN)
 - WiFi (correct MAC)
 - Installation via EVA bootloader
 - OpenWRT sysupgrade
 - Buttons
 - LEDs

Not working:
 - USB port

Installation via EVA:
In the first seconds after Power is connected, the bootloader will
listen for FTP connections on 169.254.157.1 (Might also be 192.168.178.1).
Firmware can be uploaded like following:

  ftp> quote USER adam2
  ftp> quote PASS adam2
  ftp> binary
  ftp> debug
  ftp> passive
  ftp> quote MEDIA FLSH
  ftp> put openwrt-sysupgrade.bin mtd1

Note that this procedure might take up to two minutes. After transfer is
complete you need to powercycle the device to boot OpenWRT.

Signed-off-by: David Bauer <mail at david-bauer.net>
---

v2 changes:
 - add annotation for initial output-line-state setting
 - rebase onto current master

 .../ath79/base-files/etc/board.d/01_leds      |   4 +
 .../ath79/base-files/etc/board.d/02_network   |   5 +
 .../etc/hotplug.d/firmware/10-ath9k-eeprom    |   3 +
 .../linux/ath79/dts/qca9561_avm_fritz4020.dts | 172 ++++++++++++++++++
 target/linux/ath79/image/generic.mk           |  14 ++
 .../005-gpio-74x164-add-initvals.patch        |  15 ++
 6 files changed, 213 insertions(+)
 create mode 100644 target/linux/ath79/dts/qca9561_avm_fritz4020.dts
 create mode 100644 target/linux/ath79/patches-4.14/005-gpio-74x164-add-initvals.patch

diff --git a/target/linux/ath79/base-files/etc/board.d/01_leds b/target/linux/ath79/base-files/etc/board.d/01_leds
index c3dc1bbe56..f058bf599e 100755
--- a/target/linux/ath79/base-files/etc/board.d/01_leds
+++ b/target/linux/ath79/base-files/etc/board.d/01_leds
@@ -17,6 +17,10 @@ avm,fritz300e)
 	ucidef_set_led_rssi "rssimediumhigh" "RSSIMEDIUMHIGH" "$boardname:green:rssi3" "wlan0" "60" "100"
 	ucidef_set_led_rssi "rssihigh" "RSSIHIGH" "$boardname:green:rssi4" "wlan0" "80" "100"
 	;;
+avm,fritz4020)
+	ucidef_set_led_netdev "wan" "WAN" "$boardname:green:wan" "eth0"
+	ucidef_set_led_switch "lan" "LAN" "$boardname:green:lan" "switch0" "0x1E"
+	;;
 etactica,eg200)
 	ucidef_set_led_netdev "lan" "LAN" "$boardname:red:eth0" "eth0"
 	ucidef_set_led_oneshot "modbus" "Modbus" "$boardname:red:modbus" "100" "33"
diff --git a/target/linux/ath79/base-files/etc/board.d/02_network b/target/linux/ath79/base-files/etc/board.d/02_network
index a29a295c56..6cd1686e23 100755
--- a/target/linux/ath79/base-files/etc/board.d/02_network
+++ b/target/linux/ath79/base-files/etc/board.d/02_network
@@ -43,6 +43,7 @@ ath79_setup_interfaces()
 	etactica,eg200)
 		ucidef_set_interface_lan "eth0" "dhcp"
 		;;
+	avm,fritz4020|\
 	glinet,ar150|\
 	glinet,ar300m)
 		ucidef_set_interfaces_lan_wan "eth1" "eth0"
@@ -155,6 +156,10 @@ ath79_setup_macs()
 	avm,fritz300e)
 		lan_mac=$(fritz_tffs -n maca -i $(find_mtd_part "tffs (1)"))
 		;;
+	avm,fritz4020)
+		lan_mac=$(fritz_tffs -n maca -i $(find_mtd_part "tffs (1)"))
+		wan_mac=$(fritz_tffs -n macb -i $(find_mtd_part "tffs (1)"))
+		;;
 	dlink,dir-825-b1)
 		lan_mac=$(mtd_get_mac_text "caldata" 65440)
 		wan_mac=$(mtd_get_mac_text "caldata" 65460)
diff --git a/target/linux/ath79/base-files/etc/hotplug.d/firmware/10-ath9k-eeprom b/target/linux/ath79/base-files/etc/hotplug.d/firmware/10-ath9k-eeprom
index f71139c55c..c36b566a35 100644
--- a/target/linux/ath79/base-files/etc/hotplug.d/firmware/10-ath9k-eeprom
+++ b/target/linux/ath79/base-files/etc/hotplug.d/firmware/10-ath9k-eeprom
@@ -97,6 +97,9 @@ board=$(board_name)
 case "$FIRMWARE" in
 "ath9k-eeprom-ahb-18100000.wmac.bin")
 	case $board in
+	avm,fritz4020)
+		ath9k_eeprom_extract_reverse "urlader" 5441 1088
+		;;
 	iodata,wn-ac1600dgr2)
 		ath9k_eeprom_extract "art" 4096 1088
 		ath9k_patch_fw_mac $(mtd_get_mac_ascii u-boot-env ethaddr) 2
diff --git a/target/linux/ath79/dts/qca9561_avm_fritz4020.dts b/target/linux/ath79/dts/qca9561_avm_fritz4020.dts
new file mode 100644
index 0000000000..a4e059efd4
--- /dev/null
+++ b/target/linux/ath79/dts/qca9561_avm_fritz4020.dts
@@ -0,0 +1,172 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+/dts-v1/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+
+#include "qca956x.dtsi"
+
+/ {
+	compatible = "avm,fritz4020", "qca,qca9560";
+	model = "AVM FRITZ!Box 4020";
+
+	aliases {
+		led-boot = &power;
+		led-failsafe = &info_red;
+		led-running = &power;
+		led-upgrade = &info_red;
+	};
+
+	chosen {
+		bootargs = "console=ttyS0,115200n8";
+	};
+
+	led_spi {
+		compatible = "spi-gpio";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		gpio-sck = <&gpio 20 GPIO_ACTIVE_HIGH>;
+		gpio-mosi = <&gpio 19 GPIO_ACTIVE_HIGH>;
+		num-chipselects = <0>;
+
+		led_gpio: led_gpio at 0 {
+			compatible = "fairchild,74hc595";
+			reg = <0>;
+			gpio-controller;
+			#gpio-cells = <2>;
+			registers-number = <1>;
+			lines-initial-states = /bits/ 8 <0xff>;
+			spi-max-frequency = <10000000>;
+		};
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		power: power {
+			label = "fritz4020:green:power";
+			gpios = <&led_gpio 2 GPIO_ACTIVE_LOW>;
+			default-state = "on";
+		};
+
+		wlan {
+			label = "fritz4020:green:wlan";
+			gpios = <&led_gpio 3 GPIO_ACTIVE_LOW>;
+			linux,default-trigger = "phy0tpt";
+			default-state = "off";
+		};
+
+		lan {
+			label = "fritz4020:green:lan";
+			gpios = <&led_gpio 0 GPIO_ACTIVE_LOW>;
+			default-state = "off";
+		};
+
+		wan {
+			label = "fritz4020:green:wan";
+			gpios = <&led_gpio 4 GPIO_ACTIVE_LOW>;
+			default-state = "off";
+		};
+
+		info {
+			label = "fritz4020:green:info";
+			gpios = <&led_gpio 6 GPIO_ACTIVE_LOW>;
+			default-state = "off";
+		};
+
+		info_red: info_red {
+			label = "fritz4020:red:info";
+			gpios = <&led_gpio 1 GPIO_ACTIVE_LOW>;
+			default-state = "off";
+		};
+	};
+
+	keys {
+		compatible = "gpio-keys-polled";
+		poll-interval = <100>;
+
+		wps_button {
+			label = "WPS button";
+			linux,code = <KEY_WPS_BUTTON>;
+			gpios = <&gpio 2 GPIO_ACTIVE_HIGH>;
+		};
+
+		wlan_button {
+			label = "WLAN button";
+			linux,code = <KEY_RFKILL>;
+			gpios = <&gpio 21 GPIO_ACTIVE_HIGH>;
+		};
+	};
+};
+
+&uart {
+	status = "okay";
+};
+
+&gpio {
+	status = "okay";
+};
+
+&spi {
+	status = "okay";
+	num-cs = <1>;
+
+	flash at 0 {
+		compatible = "jedec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <25000000>;
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			partition at 0 {
+				label = "urlader";
+				reg = <0x000000 0x020000>;
+				read-only;
+			};
+
+			partition at 1 {
+				label = "firmware";
+				reg = <0x020000 0xee0000>;
+			};
+
+			partition at 2 {
+				label = "tffs (1)";
+				reg = <0xf00000 0x080000>;
+				read-only;
+			};
+
+			partition at 3 {
+				label = "tffs (2)";
+				reg = <0xf80000 0x080000>;
+				read-only;
+			};
+		};
+	};
+};
+
+&eth0 {
+	status = "okay";
+
+	phy-mode = "mii";
+	phy-handle = <&swphy0>;
+
+	gmac-config {
+		device = <&gmac>;
+
+		switch-phy-addr-swap = <1>;
+		switch-phy-swap = <1>;
+	};
+};
+
+&eth1 {
+	status = "okay";
+};
+
+&wmac {
+	status = "okay";
+	qca,no-eeprom;
+};
diff --git a/target/linux/ath79/image/generic.mk b/target/linux/ath79/image/generic.mk
index 01020810cc..64043d7535 100644
--- a/target/linux/ath79/image/generic.mk
+++ b/target/linux/ath79/image/generic.mk
@@ -13,6 +13,20 @@ define Device/avm_fritz300e
 endef
 TARGET_DEVICES += avm_fritz300e
 
+define Device/avm_fritz4020
+  ATH_SOC := qca9561
+  DEVICE_TITLE := AVM FRITZ!Box 4020
+  IMAGE_SIZE := 15232k
+  KERNEL := kernel-bin | append-dtb | lzma | eva-image
+  KERNEL_INITRAMFS := $$(KERNEL)
+  IMAGE/sysupgrade.bin := append-kernel | pad-to 64k | \
+      append-squashfs-fakeroot-be | pad-to 256 | \
+      append-rootfs | pad-rootfs | append-metadata | check-size $$$$(IMAGE_SIZE)
+  DEVICE_PACKAGES := fritz-tffs
+  SUPPORTED_DEVICES += fritz4020
+endef
+TARGET_DEVICES += avm_fritz4020
+
 define Device/buffalo_wzr-hp-g450h
   ATH_SOC := ar7242
   DEVICE_TITLE := Buffalo WZR-HP-G450H
diff --git a/target/linux/ath79/patches-4.14/005-gpio-74x164-add-initvals.patch b/target/linux/ath79/patches-4.14/005-gpio-74x164-add-initvals.patch
new file mode 100644
index 0000000000..d72f7140c2
--- /dev/null
+++ b/target/linux/ath79/patches-4.14/005-gpio-74x164-add-initvals.patch
@@ -0,0 +1,15 @@
+Index: linux-4.14.62/drivers/gpio/gpio-74x164.c
+===================================================================
+--- linux-4.14.62.orig/drivers/gpio/gpio-74x164.c
++++ linux-4.14.62/drivers/gpio/gpio-74x164.c
+@@ -151,6 +151,10 @@ static int gen_74x164_probe(struct spi_d
+ 	chip->gpio_chip.parent = &spi->dev;
+ 	chip->gpio_chip.owner = THIS_MODULE;
+ 
++	/* Set initial output line values */
++	of_property_read_u8_array(spi->dev.of_node, "lines-initial-states", chip->buffer,
++				  chip->registers);
++
+ 	mutex_init(&chip->lock);
+ 
+ 	ret = __gen_74x164_write_config(chip);
-- 
2.18.0


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