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

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@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

I was informed that gpio-hogs might be the thing we are looking for, i
will look into that. So this patch should be hold back for now.

On 8/16/18 2:15 AM, David Bauer wrote:
> 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@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@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@0 {
> +		compatible = "jedec,spi-nor";
> +		reg = <0>;
> +		spi-max-frequency = <25000000>;
> +
> +		partitions {
> +			compatible = "fixed-partitions";
> +			#address-cells = <1>;
> +			#size-cells = <1>;
> +
> +			partition@0 {
> +				label = "urlader";
> +				reg = <0x000000 0x020000>;
> +				read-only;
> +			};
> +
> +			partition@1 {
> +				label = "firmware";
> +				reg = <0x020000 0xee0000>;
> +			};
> +
> +			partition@2 {
> +				label = "tffs (1)";
> +				reg = <0xf00000 0x080000>;
> +				read-only;
> +			};
> +
> +			partition@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);
>