mediatek: Add support for the UniElec U7623-02

This commit adds support for the MT7623A-based UniElec U7623-02 router,
with eMMC storage and 512MB RAM. The router can be delivered with NAND
Flash and more memory, but I only have access to the one configuration.
The DTS is structured in such a way that adding support for
more/different storage/memory should be straight forward.

The device has the following specifications:

* MT7623A (quad-core, 1.3 GHz)
* 512MB RAM (DDR3)
* 8GB storage (eMMC 4.5)
* 2x normal miniPCIe slots
* 1x miniPCIe slot that is connected via an internal USB OTG port
* 5x 1Gbps Ethernet (MT7530 switch)
* 1x UART header
* 1x USB 3.0 port
* 1x SATA 3.0
* 1x 40P*0.5mm FPC for MIPI LCD
* 1x SIM slot
* 12x LEDs (2 GPIO controlled)
* 1x reset button
* 1x DC jack for main power (12V)

The following has been tested and is working:
* Ethernet switch
* miniPCIe slots (tested with Wi-Fi cards)
* USB 3.0 port
* sysupgrade
* reset button

Not working:
* The miniPCIe connected via USB OTG. For the port to work, some MUSB
glue must be added. I am currently in the process of porting the glue
from the vendor SDK.

Not tested:
* SATA 3.0
* MIPI LCD

Installation:

The board ships with u-boot, and the first installation needs to be done
via the bootloader using tftp. Step number one is to update the MBR of
the eMMC, as the one that ships with the device is broken. Since the
device can ship with different storage sizes, I will not provide the
exact steps for creating a valid MBR. However, I have made some
assumptions about the disk layout - there must be one 8MB recovery
partition (FAT32) and a partition for the rootfs (Linux).

The board loads the kernel from block 0xA00 (2560) and I have reserved
32MB for the kernel (65536 blocks). I have aligned the partitions on the
erase block size (4096 byte), so the recovery partition must start on
block 69632 and end on 86016 (16385 sectors). The rootfs is assumed to
start on sector 90112.

In order to install the mbr, you run the following commands from the
u-boot command line:

* tftpboot ${loadaddr} <name of mbr file>
* mmc device 0
* mmc write ${loadaddr} 0x00 1

Run the following commands to install + boot OpenWRT:

* tftpboot ${loadaddr} openwrt-mediatek-mt7623-7623a-unielec-u7623-02-emmc-512m-squashfs-sysupgrade-emmc.bin.gz
* run boot_wr_img
* run boot_rd_img
* bootm

Recovery:

In order to recover the router, you need to follow the installation
steps above (no need to replace MBR).

Notes:

* F2FS is used as the overlay filesystem.

* The device does not ship with any valid MAC address, so a random
address has to be generated. As a work-around, I write the initial
random MAC to a file on the recovery partition. The MAC of the WAN
interface is set to the MAC-address contained in this file on each boot,
and the address of the LAN-interfaces are WAN + 1. The MAC file is kept
across sysupgrade/firstboot.

My approach is slightly different than what the stock image does. The
first fives bytes of the MAC addresses in the stock image are static,
and then the last byte is random. I believe it is better to create fully
random MAC addresses.

* In order to support the miniPCIe-slots, I needed to add missing
pcie-nodes to mt7623.dtsi. The nodes are just c&p from the upstream
dtsi.

* One of the USB3.0 phys (u3phy2) on the board can be used as either USB
or PCI, and one of the wifi-cards is connected to this phy. In order to
support switching the phy from USB to PCI, I needed to patch the
phy-driver. The patch is based on a rejected (at least last time I
checked) PCI-driver submitted to the linux-mediatek mailing list.

* The eMMC is configured to boot from the user area, and according to
the data sheet of the eMMC this value can't be changed.

* I tried to structure the MBR more nicely and use for example a
FAT32-parition for the kernel, so that we don't need to write/read from
some offset. The bootloader does not support reading from
FAT32-paritions. While the command (fatload) is there, it just throws an
error when I try to use it.

* I will submit and hope to get the DTS for the device accepted
upstream. If and when that happens, I will update the patches
accordingly.

Signed-off-by: Kristian Evensen <kristian.evensen@gmail.com>

11 files changed, 805 insertions, 8 deletions

diff --git a/target/linux/mediatek/base-files/etc/board.d/02_network b/target/linux/mediatek/base-files/etc/board.d/02_network
index 8015cf3cc2..faa2434241 100755
--- a/target/linux/mediatek/base-files/etc/board.d/02_network
+++ b/target/linux/mediatek/base-files/etc/board.d/02_network
@@ -13,9 +13,21 @@ mediatek_setup_interfaces()
 		ucidef_set_interface_lan "lan0 lan1 lan2 lan3"
 		ucidef_set_interface_wan eth1
 		;;
-	'bananapi,bpi-r2') 
-		ucidef_set_interface_lan "lan0 lan1 lan2 lan3"
-		ucidef_set_interface_wan wan
+	'bananapi,bpi-r2'|\
+	"unielec,u7623"*)
+		ucidef_set_interfaces_lan_wan "lan0 lan1 lan2 lan3" "wan"
+		;;
+	esac
+}
+
+mediatek_setup_macs()
+{
+	local board="$1"
+
+	case $board in
+	"unielec,u7623"*)
+		mac=$(cat /sys/class/net/wan/address)
+		ucidef_set_interface_macaddr "wan" $mac
 		;;
 	esac
 }
@@ -23,6 +35,7 @@ mediatek_setup_interfaces()
 board_config_update
 board=$(board_name)
 mediatek_setup_interfaces $board
+mediatek_setup_macs $board
 board_config_flush
 
 exit 0
diff --git a/target/linux/mediatek/base-files/lib/preinit/07_set_iface_mac b/target/linux/mediatek/base-files/lib/preinit/07_set_iface_mac
new file mode 100644
index 0000000000..3d04000738
--- /dev/null
+++ b/target/linux/mediatek/base-files/lib/preinit/07_set_iface_mac
@@ -0,0 +1,47 @@
+#!/bin/sh
+# Copyright (C) 2018 OpenWrt.org
+
+RECOVERY_PART=/dev/mmcblk0p1
+
+preinit_set_mac_address() {
+	local mac
+
+	. /lib/functions.sh
+	. /lib/functions/system.sh
+
+	case $(board_name) in
+	"unielec,u7623"*)
+		if [ -b $RECOVERY_PART ]; then
+			insmod nls_cp437
+			insmod nls_iso8859-1
+			insmod fat
+			insmod vfat
+			mkdir -p /tmp/recovery
+			mount -o rw,noatime $RECOVERY_PART /tmp/recovery
+
+			if [ -f "/tmp/recovery/mac_addr" ];
+			then
+				mac=$(cat /tmp/recovery/mac_addr)
+			else
+				mac=$(cat /sys/class/net/eth0/address)
+				echo "$mac" > /tmp/recovery/mac_addr
+			fi
+
+			sync
+			umount /tmp/recovery
+			rm -rf /tmp/recovery
+		fi
+
+		ip link set dev wan address $mac 2> /dev/null
+
+		mac=$(macaddr_add $mac 1)
+
+		ip link set dev lan0 address $mac 2>/dev/null
+		ip link set dev lan1 address $mac 2>/dev/null
+		ip link set dev lan2 address $mac 2>/dev/null
+		ip link set dev lan3 address $mac 2>/dev/null
+		;;
+	esac
+}
+
+boot_hook_add preinit_main preinit_set_mac_address
diff --git a/target/linux/mediatek/base-files/lib/preinit/79_move_config b/target/linux/mediatek/base-files/lib/preinit/79_move_config
new file mode 100644
index 0000000000..e8e62883dc
--- /dev/null
+++ b/target/linux/mediatek/base-files/lib/preinit/79_move_config
@@ -0,0 +1,19 @@
+#!/bin/sh
+# Copyright (C) 2015 OpenWrt.org
+
+RECOVERY_PART=/dev/mmcblk0p1
+
+move_config() {
+	if [ -b $RECOVERY_PART ]; then
+		insmod nls_cp437
+		insmod nls_iso8859-1
+		insmod fat
+		insmod vfat
+		mkdir -p /recovery
+		mount -o rw,noatime $RECOVERY_PART /recovery
+		[ -f /recovery/sysupgrade.tgz ] && mv -f /recovery/sysupgrade.tgz /
+		umount /recovery
+	fi
+}
+
+boot_hook_add preinit_mount_root move_config
diff --git a/target/linux/mediatek/base-files/lib/upgrade/platform.sh b/target/linux/mediatek/base-files/lib/upgrade/platform.sh
index 646ce0dc53..487a262dc2 100755
--- a/target/linux/mediatek/base-files/lib/upgrade/platform.sh
+++ b/target/linux/mediatek/base-files/lib/upgrade/platform.sh
@@ -1,6 +1,28 @@
 platform_do_upgrade() {                 
-	default_do_upgrade "$ARGV"                                               
-}                                                                                
+	local board=$(board_name)
+	case "$board" in
+	"unielec,u7623"*)
+		#Keep the persisten random mac address (if it exists)
+		mkdir -p /tmp/recovery
+		mount -o rw,noatime /dev/mmcblk0p1 /tmp/recovery
+		[ -f "/tmp/recovery/mac_addr" ] && \
+			mv -f /tmp/recovery/mac_addr /tmp/
+		umount /tmp/recovery
+
+		#1310720 is the offset in bytes from the start of eMMC and to
+		#the location of the kernel (2560 512 byte sectors)
+		get_image "$1" | dd of=/dev/mmcblk0 bs=1310720 seek=1 conv=fsync
+
+		mount -o rw,noatime /dev/mmcblk0p1 /tmp/recovery
+		[ -f "/tmp/mac_addr" ] && mv -f /tmp/mac_addr /tmp/recovery
+		sync
+		umount /tmp/recovery
+		;;
+	*)
+		default_do_upgrade "$ARGV"
+		;;
+	esac
+}
 
 PART_NAME=firmware
 
@@ -11,7 +33,8 @@ platform_check_image() {
 	[ "$#" -gt 1 ] && return 1                                               
 
 	case "$board" in                                                       
-	bananapi,bpi-r2)                                                       
+	bananapi,bpi-r2|\
+	"unielec,u7623"*)
 		[ "$magic" != "27051956" ] && {   
 			echo "Invalid image type."
 			return 1                                     
@@ -26,4 +49,20 @@ platform_check_image() {
 	esac                                      
 
 	return 0                                                                                         
-}                   
+}
+
+platform_copy_config_emmc() {
+	mkdir -p /recovery
+	mount -o rw,noatime /dev/mmcblk0p1 /recovery
+	cp -af "$CONF_TAR" /recovery/
+	sync
+	umount /recovery
+}
+
+platform_copy_config() {
+	case "$(board_name)" in
+	"unielec,u7623"*)
+		platform_copy_config_emmc
+		;;
+	esac
+}
diff --git a/target/linux/mediatek/image/Makefile b/target/linux/mediatek/image/Makefile
index 6659d446d0..5e2b2c6d0a 100644
--- a/target/linux/mediatek/image/Makefile
+++ b/target/linux/mediatek/image/Makefile
@@ -22,6 +22,16 @@ define Build/dtb
 	$(CP) $(DEVICE_DTS_DIR)/$(DEVICE_DTS).dtb $(BIN_DIR)/
 endef
 
+define Build/sysupgrade-emmc
+	rm -f $@.recovery
+	mkfs.fat -C $@.recovery 3070
+
+	./gen_mt7623_emmc_img.sh $@ \
+		$(IMAGE_KERNEL) \
+		$@.recovery \
+		$(IMAGE_ROOTFS)
+endef
+
 # default all platform image(fit) build 
 define Device/Default
   PROFILES = Default $$(DEVICE_NAME)
diff --git a/target/linux/mediatek/image/gen_mt7623_emmc_img.sh b/target/linux/mediatek/image/gen_mt7623_emmc_img.sh
new file mode 100755
index 0000000000..1cb0883fb0
--- /dev/null
+++ b/target/linux/mediatek/image/gen_mt7623_emmc_img.sh
@@ -0,0 +1,18 @@
+#!/usr/bin/env bash
+
+OUTPUT_FILE=$1
+KERNEL_FILE=$2
+RECOVERY_FILE=$3
+ROOTFS_FILE=$4
+
+BS=512
+
+#These to offsets are relative to the absolute location of the kernel on the mmc
+#(0xA00), so their position in the image is -2560 blocks
+RECOVERY_OFFSET=67072
+ROOTFS_OFFSET=87552
+
+dd bs="$BS" of="$OUTPUT_FILE" if="$KERNEL_FILE"
+dd bs="$BS" of="$OUTPUT_FILE" if="$RECOVERY_FILE" seek="$RECOVERY_OFFSET"
+dd bs="$BS" of="$OUTPUT_FILE" if="$ROOTFS_FILE" seek="$ROOTFS_OFFSET"
+dd if=/dev/zero of="$OUTPUT_FILE" bs=128k count=1 oflag=append conv=notrunc
diff --git a/target/linux/mediatek/image/mt7623.mk b/target/linux/mediatek/image/mt7623.mk
index ddb4faa480..fa6774e783 100644
--- a/target/linux/mediatek/image/mt7623.mk
+++ b/target/linux/mediatek/image/mt7623.mk
@@ -1,3 +1,14 @@
+define Device/7623a-unielec-u7623-02-emmc-512m
+  DEVICE_TITLE := MTK7623a UniElec U7623-02 (eMMC/512MB RAM)
+  DEVICE_DTS := mt7623a-unielec-u7623-02-emmc-512M
+  DEVICE_PACKAGES := mkf2fs e2fsprogs kmod-fs-vfat kmod-nls-cp437 kmod-nls-iso8859-1 kmod-mmc
+  SUPPORTED_DEVICES := unielec,u7623-02-emmc-512m
+  IMAGES := sysupgrade-emmc.bin.gz
+  IMAGE/sysupgrade-emmc.bin.gz := sysupgrade-emmc | gzip | append-metadata
+endef
+
+TARGET_DEVICES += 7623a-unielec-u7623-02-emmc-512m
+
 define Device/7623n-bananapi-bpi-r2
   DEVICE_TITLE := MTK7623n BananaPi R2
   DEVICE_DTS := mt7623n-bananapi-bpi-r2
diff --git a/target/linux/mediatek/mt7623/config-4.14 b/target/linux/mediatek/mt7623/config-4.14
index 9f70989410..0437740467 100644
--- a/target/linux/mediatek/mt7623/config-4.14
+++ b/target/linux/mediatek/mt7623/config-4.14
@@ -51,6 +51,7 @@ CONFIG_ARM_UNWIND=y
 CONFIG_ARM_VIRT_EXT=y
 CONFIG_ATAGS=y
 CONFIG_AUTO_ZRELADDR=y
+CONFIG_BLK_DEV_LOOP=y
 CONFIG_BLK_MQ_PCI=y
 CONFIG_BOUNCE=y
 # CONFIG_CACHE_L2X0 is not set
@@ -114,6 +115,8 @@ CONFIG_CROSS_MEMORY_ATTACH=y
 CONFIG_CRYPTO_ACOMP2=y
 CONFIG_CRYPTO_AEAD=y
 CONFIG_CRYPTO_AEAD2=y
+CONFIG_CRYPTO_CRC32=y
+CONFIG_CRYPTO_CRC32C=y
 CONFIG_CRYPTO_CTR=y
 CONFIG_CRYPTO_DEFLATE=y
 CONFIG_CRYPTO_DEV_MEDIATEK=y
@@ -165,9 +168,16 @@ CONFIG_EARLY_PRINTK=y
 CONFIG_EDAC_ATOMIC_SCRUB=y
 CONFIG_EDAC_SUPPORT=y
 CONFIG_ELF_CORE=y
+CONFIG_EXT4_FS=y
+# CONFIG_F2FS_CHECK_FS is not set
+CONFIG_F2FS_FS=y
+# CONFIG_F2FS_FS_SECURITY is not set
+CONFIG_F2FS_FS_XATTR=y
+CONFIG_F2FS_STAT_FS=y
 CONFIG_FIXED_PHY=y
 CONFIG_FIX_EARLYCON_MEM=y
 CONFIG_FREEZER=y
+CONFIG_FS_MBCACHE=y
 CONFIG_GENERIC_ALLOCATOR=y
 CONFIG_GENERIC_BUG=y
 CONFIG_GENERIC_CLOCKEVENTS=y
@@ -269,6 +279,7 @@ CONFIG_IRQ_DOMAIN=y
 CONFIG_IRQ_DOMAIN_HIERARCHY=y
 CONFIG_IRQ_FORCED_THREADING=y
 CONFIG_IRQ_WORK=y
+CONFIG_JBD2=y
 CONFIG_KALLSYMS=y
 CONFIG_LEDS_MT6323=y
 CONFIG_LIBFDT=y
@@ -472,7 +483,6 @@ CONFIG_UNINLINE_SPIN_UNLOCK=y
 CONFIG_USB=y
 CONFIG_USB_COMMON=y
 # CONFIG_USB_EHCI_HCD is not set
-# CONFIG_USB_MTU3 is not set
 CONFIG_USB_SUPPORT=y
 CONFIG_USB_XHCI_HCD=y
 CONFIG_USB_XHCI_MTK=y
diff --git a/target/linux/mediatek/patches-4.14/0225-arm-dts-Add-missing-mt7623-pcie-nodes.patch b/target/linux/mediatek/patches-4.14/0225-arm-dts-Add-missing-mt7623-pcie-nodes.patch
new file mode 100644
index 0000000000..b87f95c1f9
--- /dev/null
+++ b/target/linux/mediatek/patches-4.14/0225-arm-dts-Add-missing-mt7623-pcie-nodes.patch
@@ -0,0 +1,128 @@
+From d31800ff6ed81f44488b590fe372e7b6572d2896 Mon Sep 17 00:00:00 2001
+From: Kristian Evensen <kristian.evensen@gmail.com>
+Date: Sun, 17 Jun 2018 14:18:45 +0200
+Subject: [PATCH] arm: dts: Add missing mt7623 pcie nodes
+
+---
+ arch/arm/boot/dts/mt7623.dtsi | 105 ++++++++++++++++++++++++++++++++++++++++++
+ 1 file changed, 105 insertions(+)
+
+diff --git a/arch/arm/boot/dts/mt7623.dtsi b/arch/arm/boot/dts/mt7623.dtsi
+index 36983a7d7..714245365 100644
+--- a/arch/arm/boot/dts/mt7623.dtsi
++++ b/arch/arm/boot/dts/mt7623.dtsi
+@@ -669,6 +669,111 @@
+ 		#reset-cells = <1>;
+ 	};
+ 
++	pcie: pcie@1a140000 {
++		compatible = "mediatek,mt7623-pcie";
++		device_type = "pci";
++		reg = <0 0x1a140000 0 0x1000>, /* PCIe shared registers */
++		      <0 0x1a142000 0 0x1000>, /* Port0 registers */
++		      <0 0x1a143000 0 0x1000>, /* Port1 registers */
++		      <0 0x1a144000 0 0x1000>; /* Port2 registers */
++		reg-names = "subsys", "port0", "port1", "port2";
++		#address-cells = <3>;
++		#size-cells = <2>;
++		#interrupt-cells = <1>;
++		interrupt-map-mask = <0xf800 0 0 0>;
++		interrupt-map = <0x0000 0 0 0 &sysirq GIC_SPI 193 IRQ_TYPE_LEVEL_LOW>,
++				<0x0800 0 0 0 &sysirq GIC_SPI 194 IRQ_TYPE_LEVEL_LOW>,
++				<0x1000 0 0 0 &sysirq GIC_SPI 195 IRQ_TYPE_LEVEL_LOW>;
++		clocks = <&topckgen CLK_TOP_ETHIF_SEL>,
++			 <&hifsys CLK_HIFSYS_PCIE0>,
++			 <&hifsys CLK_HIFSYS_PCIE1>,
++			 <&hifsys CLK_HIFSYS_PCIE2>;
++		clock-names = "free_ck", "sys_ck0", "sys_ck1", "sys_ck2";
++		resets = <&hifsys MT2701_HIFSYS_PCIE0_RST>,
++			 <&hifsys MT2701_HIFSYS_PCIE1_RST>,
++			 <&hifsys MT2701_HIFSYS_PCIE2_RST>;
++		reset-names = "pcie-rst0", "pcie-rst1", "pcie-rst2";
++		phys = <&pcie0_port PHY_TYPE_PCIE>,
++		       <&pcie1_port PHY_TYPE_PCIE>,
++		       <&u3port1 PHY_TYPE_PCIE>;
++		phy-names = "pcie-phy0", "pcie-phy1", "pcie-phy2";
++		power-domains = <&scpsys MT2701_POWER_DOMAIN_HIF>;
++		bus-range = <0x00 0xff>;
++		status = "disabled";
++		ranges = <0x81000000 0 0x1a160000 0 0x1a160000 0 0x00010000
++			  0x83000000 0 0x60000000 0 0x60000000 0 0x10000000>;
++
++		pcie@0,0 {
++			reg = <0x0000 0 0 0 0>;
++			#address-cells = <3>;
++			#size-cells = <2>;
++			#interrupt-cells = <1>;
++			interrupt-map-mask = <0 0 0 0>;
++			interrupt-map = <0 0 0 0 &sysirq GIC_SPI 193 IRQ_TYPE_LEVEL_LOW>;
++			ranges;
++			num-lanes = <1>;
++			status = "disabled";
++		};
++		pcie@1,0 {
++			reg = <0x0800 0 0 0 0>;
++			#address-cells = <3>;
++			#size-cells = <2>;
++			#interrupt-cells = <1>;
++			interrupt-map-mask = <0 0 0 0>;
++			interrupt-map = <0 0 0 0 &sysirq GIC_SPI 194 IRQ_TYPE_LEVEL_LOW>;
++			ranges;
++			num-lanes = <1>;
++			status = "disabled";
++		};
++
++		pcie@2,0 {
++			reg = <0x1000 0 0 0 0>;
++			#address-cells = <3>;
++			#size-cells = <2>;
++			#interrupt-cells = <1>;
++			interrupt-map-mask = <0 0 0 0>;
++			interrupt-map = <0 0 0 0 &sysirq GIC_SPI 195 IRQ_TYPE_LEVEL_LOW>;
++			ranges;
++			num-lanes = <1>;
++			status = "disabled";
++		};
++	};
++
++	pcie0_phy: pcie-phy@1a149000 {
++		compatible = "mediatek,generic-tphy-v1";
++		reg = <0 0x1a149000 0 0x0700>;
++		#address-cells = <2>;
++		#size-cells = <2>;
++		ranges;
++		status = "disabled";
++
++		pcie0_port: pcie-phy@1a149900 {
++			reg = <0 0x1a149900 0 0x0700>;
++			clocks = <&clk26m>;
++			clock-names = "ref";
++			#phy-cells = <1>;
++			status = "okay";
++		};
++	};
++
++	pcie1_phy: pcie-phy@1a14a000 {
++		compatible = "mediatek,generic-tphy-v1";
++		reg = <0 0x1a14a000 0 0x0700>;
++		#address-cells = <2>;
++		#size-cells = <2>;
++		ranges;
++		status = "disabled";
++
++		pcie1_port: pcie-phy@1a14a900 {
++			reg = <0 0x1a14a900 0 0x0700>;
++			clocks = <&clk26m>;
++			clock-names = "ref";
++			#phy-cells = <1>;
++			status = "okay";
++		};
++	};
++
++
+ 	usb1: usb@1a1c0000 {
+ 		compatible = "mediatek,mt7623-xhci",
+ 			     "mediatek,mt8173-xhci";
+-- 
+2.14.1
+
diff --git a/target/linux/mediatek/patches-4.14/0226-phy-phy-mtk-tphy-Add-hifsys-support.patch b/target/linux/mediatek/patches-4.14/0226-phy-phy-mtk-tphy-Add-hifsys-support.patch
new file mode 100644
index 0000000000..1ac15bdb72
--- /dev/null
+++ b/target/linux/mediatek/patches-4.14/0226-phy-phy-mtk-tphy-Add-hifsys-support.patch
@@ -0,0 +1,71 @@
+From 28f9a5e2a3f5441ab5594669ed82da11e32277a9 Mon Sep 17 00:00:00 2001
+From: Kristian Evensen <kristian.evensen@gmail.com>
+Date: Mon, 30 Apr 2018 14:38:01 +0200
+Subject: [PATCH] phy: phy-mtk-tphy: Add hifsys-support
+
+---
+ drivers/phy/mediatek/phy-mtk-tphy.c | 20 ++++++++++++++++++++
+ 1 file changed, 20 insertions(+)
+
+diff --git a/drivers/phy/mediatek/phy-mtk-tphy.c b/drivers/phy/mediatek/phy-mtk-tphy.c
+index 721a2a1c9..0cb1cea53 100644
+--- a/drivers/phy/mediatek/phy-mtk-tphy.c
++++ b/drivers/phy/mediatek/phy-mtk-tphy.c
+@@ -22,6 +22,8 @@
+ #include <linux/of_address.h>
+ #include <linux/phy/phy.h>
+ #include <linux/platform_device.h>
++#include <linux/mfd/syscon.h>
++#include <linux/regmap.h>
+ 
+ /* version V1 sub-banks offset base address */
+ /* banks shared by multiple phys */
+@@ -259,6 +261,9 @@
+ #define RG_CDR_BIRLTD0_GEN3_MSK		GENMASK(4, 0)
+ #define RG_CDR_BIRLTD0_GEN3_VAL(x)	(0x1f & (x))
+ 
++#define HIF_SYSCFG1			0x14
++#define HIF_SYSCFG1_PHY2_MASK		(0x3 << 20)
++
+ enum mtk_phy_version {
+ 	MTK_PHY_V1 = 1,
+ 	MTK_PHY_V2,
+@@ -302,6 +307,7 @@ struct mtk_tphy {
+ 	struct clk *u3phya_ref;	/* reference clock of usb3 anolog phy */
+ 	const struct mtk_phy_pdata *pdata;
+ 	struct mtk_phy_instance **phys;
++	struct regmap *hif;
+ 	int nphys;
+ };
+ 
+@@ -594,6 +600,10 @@ static void pcie_phy_instance_init(struct mtk_tphy *tphy,
+ 	if (tphy->pdata->version != MTK_PHY_V1)
+ 		return;
+ 
++	if (tphy->hif)
++		regmap_update_bits(tphy->hif, HIF_SYSCFG1,
++				   HIF_SYSCFG1_PHY2_MASK, 0);
++
+ 	tmp = readl(u3_banks->phya + U3P_U3_PHYA_DA_REG0);
+ 	tmp &= ~(P3A_RG_XTAL_EXT_PE1H | P3A_RG_XTAL_EXT_PE2H);
+ 	tmp |= P3A_RG_XTAL_EXT_PE1H_VAL(0x2) | P3A_RG_XTAL_EXT_PE2H_VAL(0x2);
+@@ -1008,6 +1018,16 @@ static int mtk_tphy_probe(struct platform_device *pdev)
+ 		tphy->u3phya_ref = NULL;
+ 	}
+ 
++	if (of_find_property(np, "mediatek,phy-switch", NULL)) {
++		tphy->hif = syscon_regmap_lookup_by_phandle(np,
++							    "mediatek,phy-switch");
++		if (IS_ERR(tphy->hif)) {
++			dev_err(&pdev->dev,
++				"missing \"mediatek,phy-switch\" phandle\n");
++			return PTR_ERR(tphy->hif);
++		}
++	}
++
+ 	port = 0;
+ 	for_each_child_of_node(np, child_np) {
+ 		struct mtk_phy_instance *instance;
+-- 
+2.14.1
+
diff --git a/target/linux/mediatek/patches-4.14/0227-arm-dts-Add-Unielec-U7623-DTS.patch b/target/linux/mediatek/patches-4.14/0227-arm-dts-Add-Unielec-U7623-DTS.patch
new file mode 100644
index 0000000000..9d554da0be
--- /dev/null
+++ b/target/linux/mediatek/patches-4.14/0227-arm-dts-Add-Unielec-U7623-DTS.patch
@@ -0,0 +1,431 @@
+From 0c88c72bf130c9276958dc6f595ea473ea357a75 Mon Sep 17 00:00:00 2001
+From: Kristian Evensen <kristian.evensen@gmail.com>
+Date: Sun, 17 Jun 2018 14:41:47 +0200
+Subject: [PATCH] arm: dts: Add Unielec U7623 DTS
+
+---
+ arch/arm/boot/dts/Makefile                         |   1 +
+ .../dts/mt7623a-unielec-u7623-02-emmc-512M.dts     |  17 +
+ .../boot/dts/mt7623a-unielec-u7623-02-emmc.dtsi    | 374 +++++++++++++++++++++
+ 3 files changed, 392 insertions(+)
+ create mode 100644 arch/arm/boot/dts/mt7623a-unielec-u7623-02-emmc-512M.dts
+ create mode 100644 arch/arm/boot/dts/mt7623a-unielec-u7623-02-emmc.dtsi
+
+diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
+index 3fec84fa0..e685ce9a4 100644
+--- a/arch/arm/boot/dts/Makefile
++++ b/arch/arm/boot/dts/Makefile
+@@ -1062,6 +1062,7 @@ dtb-$(CONFIG_ARCH_MEDIATEK) += \
+ 	mt6589-aquaris5.dtb \
+ 	mt6592-evb.dtb \
+ 	mt7623a-rfb-emmc.dtb \
++	mt7623a-unielec-u7623-02-emmc-512M.dtb \
+ 	mt7623n-rfb-nand.dtb \
+ 	mt7623n-bananapi-bpi-r2.dtb \
+ 	mt8127-moose.dtb \
+diff --git a/arch/arm/boot/dts/mt7623a-unielec-u7623-02-emmc-512M.dts b/arch/arm/boot/dts/mt7623a-unielec-u7623-02-emmc-512M.dts
+new file mode 100644
+index 000000000..3b14eccd3
+--- /dev/null
++++ b/arch/arm/boot/dts/mt7623a-unielec-u7623-02-emmc-512M.dts
+@@ -0,0 +1,17 @@
++/*
++ * Copyright 2018 Kristian Evensen <kristian.evensen@gmail.com>
++ *
++ * SPDX-License-Identifier: (GPL-2.0+ OR MIT)
++ */
++
++/dts-v1/;
++#include "mt7623a-unielec-u7623-02-emmc.dtsi"
++
++/ {
++	model = "UniElec U7623-02 eMMC (512M RAM)";
++	compatible = "unielec,u7623-02-emmc-512m", "unielec,u7623-02-emmc", "mediatek,mt7623";
++
++	memory {
++		reg = <0 0x80000000 0 0x20000000>;
++	};
++};
+diff --git a/arch/arm/boot/dts/mt7623a-unielec-u7623-02-emmc.dtsi b/arch/arm/boot/dts/mt7623a-unielec-u7623-02-emmc.dtsi
+new file mode 100644
+index 000000000..4fc8ce8a9
+--- /dev/null
++++ b/arch/arm/boot/dts/mt7623a-unielec-u7623-02-emmc.dtsi
+@@ -0,0 +1,374 @@
++/*
++ * Copyright 2018 Kristian Evensen <kristian.evensen@gmail.com>
++ *
++ * SPDX-License-Identifier: (GPL-2.0+ OR MIT)
++ */
++
++#include <dt-bindings/input/input.h>
++#include "mt7623.dtsi"
++#include "mt6323.dtsi"
++
++/ {
++	compatible = "unielec,u7623-02-emmc", "mediatek,mt7623";
++
++	aliases {
++		serial2 = &uart2;
++	};
++
++	chosen {
++		bootargs = "root=/dev/mmcblk0p2 rootfstype=squashfs,f2fs";
++		stdout-path = "serial2:115200n8";
++	};
++
++	memory {
++		reg = <0 0x80000000 0 0x20000000>;
++	};
++
++	cpus {
++		cpu@0 {
++			proc-supply = <&mt6323_vproc_reg>;
++		};
++
++		cpu@1 {
++			proc-supply = <&mt6323_vproc_reg>;
++		};
++
++		cpu@2 {
++			proc-supply = <&mt6323_vproc_reg>;
++		};
++
++		cpu@3 {
++			proc-supply = <&mt6323_vproc_reg>;
++		};
++	};
++
++	reg_1p8v: regulator-1p8v {
++		compatible = "regulator-fixed";
++		regulator-name = "fixed-1.8V";
++		regulator-min-microvolt = <1800000>;
++		regulator-max-microvolt = <1800000>;
++		regulator-boot-on;
++		regulator-always-on;
++	};
++
++	reg_3p3v: regulator-3p3v {
++		compatible = "regulator-fixed";
++		regulator-name = "fixed-3.3V";
++		regulator-min-microvolt = <3300000>;
++		regulator-max-microvolt = <3300000>;
++		regulator-boot-on;
++		regulator-always-on;
++	};
++
++	reg_5v: regulator-5v {
++		compatible = "regulator-fixed";
++		regulator-name = "fixed-5V";
++		regulator-min-microvolt = <5000000>;
++		regulator-max-microvolt = <5000000>;
++		regulator-boot-on;
++		regulator-always-on;
++	};
++
++	gpio-keys {
++		compatible = "gpio-keys";
++		pinctrl-names = "default";
++		pinctrl-0 = <&key_pins_a>;
++
++		factory {
++			label = "factory";
++			linux,code = <KEY_RESTART>;
++			gpios = <&pio 256 GPIO_ACTIVE_LOW>;
++		};
++	};
++
++	leds {
++		compatible = "gpio-leds";
++		pinctrl-names = "default";
++		pinctrl-0 = <&led_pins_unielec>;
++
++		led3 {
++			label = "u7623-01:green:led3";
++			gpios = <&pio 14 GPIO_ACTIVE_LOW>;
++			default-state = "off";
++		};
++
++		led4 {
++			label = "u7623-01:green:led4";
++			gpios = <&pio 15 GPIO_ACTIVE_LOW>;
++			default-state = "off";
++		};
++	};
++
++	memory@80000000 {
++		reg = <0 0x80000000 0 0x40000000>;
++	};
++
++	mt7530: switch@0 {
++		compatible = "mediatek,mt7530";
++		#address-cells = <1>;
++		#size-cells = <0>;
++	};
++};
++
++&crypto {
++	status = "okay";
++};
++
++&eth {
++	status = "okay";
++
++	gmac0: mac@0 {
++		compatible = "mediatek,eth-mac";
++		reg = <0>;
++		phy-mode = "trgmii";
++
++		fixed-link {
++			speed = <1000>;
++			full-duplex;
++			pause;
++		};
++	};
++
++	mdio: mdio-bus {
++		#address-cells = <1>;
++		#size-cells = <0>;
++		phy5: ethernet-phy@5 {
++			reg = <5>;
++			phy-mode = "rgmii-rxid";
++		};
++	};
++};
++
++&mt7530 {
++	compatible = "mediatek,mt7530";
++	#address-cells = <1>;
++	#size-cells = <0>;
++	reg = <0>;
++	pinctrl-names = "default";
++	mediatek,mcm;
++	resets = <&ethsys 2>;
++	reset-names = "mcm";
++	core-supply = <&mt6323_vpa_reg>;
++	io-supply = <&mt6323_vemc3v3_reg>;
++
++	dsa,mii-bus = <&mdio>;
++
++	ports {
++		#address-cells = <1>;
++		#size-cells = <0>;
++		reg = <0>;
++
++		port@0 {
++			reg = <0>;
++			label = "lan0";
++			cpu = <&cpu_port0>;
++		};
++
++		port@1 {
++			reg = <1>;
++			label = "lan1";
++			cpu = <&cpu_port0>;
++		};
++
++		port@2 {
++			reg = <2>;
++			label = "lan2";
++			cpu = <&cpu_port0>;
++		};
++
++		port@3 {
++			reg = <3>;
++			label = "lan3";
++			cpu = <&cpu_port0>;
++		};
++
++		port@4 {
++			reg = <4>;
++			label = "wan";
++			cpu = <&cpu_port0>;
++		};
++
++		cpu_port0: port@6 {
++			reg = <6>;
++			label = "cpu";
++			ethernet = <&gmac0>;
++			phy-mode = "trgmii";
++
++			fixed-link {
++				speed = <1000>;
++				full-duplex;
++			};
++		};
++	};
++};
++
++&mmc0 {
++	pinctrl-names = "default", "state_uhs";
++	pinctrl-0 = <&mmc0_pins_default>;
++	pinctrl-1 = <&mmc0_pins_uhs>;
++	status = "okay";
++	bus-width = <8>;
++	max-frequency = <50000000>;
++	cap-mmc-highspeed;
++	vmmc-supply = <&reg_3p3v>;
++	vqmmc-supply = <&reg_1p8v>;
++	non-removable;
++};
++
++&pio {
++	key_pins_a: keys-alt {
++		pins-keys {
++			pinmux = <MT7623_PIN_256_GPIO256_FUNC_GPIO256>,
++				 <MT7623_PIN_257_GPIO257_FUNC_GPIO257>;
++			input-enable;
++		};
++	};
++
++	led_pins_unielec: leds-unielec {
++		pins-leds {
++			pinmux = <MT7623_PIN_14_GPIO14_FUNC_GPIO14>,
++				 <MT7623_PIN_15_GPIO15_FUNC_GPIO15>;
++		};
++	};
++
++	mmc0_pins_default: mmc0default {
++		pins_cmd_dat {
++			pinmux = <MT7623_PIN_111_MSDC0_DAT7_FUNC_MSDC0_DAT7>,
++				 <MT7623_PIN_112_MSDC0_DAT6_FUNC_MSDC0_DAT6>,
++				 <MT7623_PIN_113_MSDC0_DAT5_FUNC_MSDC0_DAT5>,
++				 <MT7623_PIN_114_MSDC0_DAT4_FUNC_MSDC0_DAT4>,
++				 <MT7623_PIN_118_MSDC0_DAT3_FUNC_MSDC0_DAT3>,
++				 <MT7623_PIN_119_MSDC0_DAT2_FUNC_MSDC0_DAT2>,
++				 <MT7623_PIN_120_MSDC0_DAT1_FUNC_MSDC0_DAT1>,
++				 <MT7623_PIN_121_MSDC0_DAT0_FUNC_MSDC0_DAT0>,
++				 <MT7623_PIN_116_MSDC0_CMD_FUNC_MSDC0_CMD>;
++			input-enable;
++			bias-pull-up;
++		};
++
++		pins_clk {
++			pinmux = <MT7623_PIN_117_MSDC0_CLK_FUNC_MSDC0_CLK>;
++			bias-pull-down;
++		};
++
++		pins_rst {
++			pinmux = <MT7623_PIN_115_MSDC0_RSTB_FUNC_MSDC0_RSTB>;
++			bias-pull-up;
++		};
++	};
++
++	mmc0_pins_uhs: mmc0 {
++		pins_cmd_dat {
++			pinmux = <MT7623_PIN_111_MSDC0_DAT7_FUNC_MSDC0_DAT7>,
++				 <MT7623_PIN_112_MSDC0_DAT6_FUNC_MSDC0_DAT6>,
++				 <MT7623_PIN_113_MSDC0_DAT5_FUNC_MSDC0_DAT5>,
++				 <MT7623_PIN_114_MSDC0_DAT4_FUNC_MSDC0_DAT4>,
++				 <MT7623_PIN_118_MSDC0_DAT3_FUNC_MSDC0_DAT3>,
++				 <MT7623_PIN_119_MSDC0_DAT2_FUNC_MSDC0_DAT2>,
++				 <MT7623_PIN_120_MSDC0_DAT1_FUNC_MSDC0_DAT1>,
++				 <MT7623_PIN_121_MSDC0_DAT0_FUNC_MSDC0_DAT0>,
++				 <MT7623_PIN_116_MSDC0_CMD_FUNC_MSDC0_CMD>;
++			input-enable;
++			drive-strength = <MTK_DRIVE_2mA>;
++			bias-pull-up = <MTK_PUPD_SET_R1R0_01>;
++		};
++
++		pins_clk {
++			pinmux = <MT7623_PIN_117_MSDC0_CLK_FUNC_MSDC0_CLK>;
++			drive-strength = <MTK_DRIVE_2mA>;
++			bias-pull-down = <MTK_PUPD_SET_R1R0_01>;
++		};
++
++		pins_rst {
++			pinmux = <MT7623_PIN_115_MSDC0_RSTB_FUNC_MSDC0_RSTB>;
++			bias-pull-up;
++		};
++	};
++
++	pwm_pins_a: pwm@0 {
++		pins_pwm {
++			pinmux = <MT7623_PIN_203_PWM0_FUNC_PWM0>,
++				 <MT7623_PIN_204_PWM1_FUNC_PWM1>,
++				 <MT7623_PIN_205_PWM2_FUNC_PWM2>,
++				 <MT7623_PIN_206_PWM3_FUNC_PWM3>,
++				 <MT7623_PIN_207_PWM4_FUNC_PWM4>;
++		};
++	};
++
++	uart2_pins_b: uart@2 {
++		pins_dat {
++			pinmux = <MT7623_PIN_200_URXD2_FUNC_URXD2>,
++				 <MT7623_PIN_201_UTXD2_FUNC_UTXD2>;
++		};
++	};
++
++	pcie_default: pcie_pin_default {
++		pins_cmd_dat {
++			pinmux = <MT7623_PIN_208_AUD_EXT_CK1_FUNC_PCIE0_PERST_N>,
++				 <MT7623_PIN_209_AUD_EXT_CK2_FUNC_PCIE1_PERST_N>;
++			bias-disable;
++		};
++	};
++};
++
++&pwm {
++	pinctrl-names = "default";
++	pinctrl-0 = <&pwm_pins_a>;
++	status = "okay";
++};
++
++&pwrap {
++	mt6323 {
++		mt6323led: led {
++			compatible = "mediatek,mt6323-led";
++			#address-cells = <1>;
++			#size-cells = <0>;
++
++			led@0 {
++				reg = <0>;
++				label = "led0";
++				default-state = "off";
++			};
++		};
++	};
++};
++
++&uart2 {
++	pinctrl-names = "default";
++	pinctrl-0 = <&uart2_pins_b>;
++	status = "okay";
++};
++
++&usb1 {
++	vusb33-supply = <&reg_3p3v>;
++	vbus-supply = <&reg_3p3v>;
++	status = "okay";
++};
++
++&u3phy1 {
++	status = "okay";
++};
++
++&u3phy2 {
++	status = "okay";
++	mediatek,phy-switch = <&hifsys>;
++};
++
++&pcie {
++	pinctrl-names = "default";
++	pinctrl-0 = <&pcie_default>;
++	status = "okay";
++
++	pcie@1,0 {
++		status = "okay";
++	};
++
++	pcie@2,0 {
++		status = "okay";
++	};
++};
++
++&pcie1_phy {
++	status = "okay";
++};
++
+-- 
+2.14.1
+