bcm53xx: try to fix network on Asus RT-AC87U

This device seems to have switch port 7 connected to the CPU:
vlan1ports=1 2 3 5 7*
vlan2ports=0 7u
it should be handled by eth1 and NVRAM seems to confirm that (no
et0macaddr entry, existing et1macaddr & et1phyaddr entries).

One of the remaining ports (4/8?) may be connected to the Quantenna SoC.
Original firmware boot log contains following messages:
(0x00,0x5d)Port 5 States Override: 0xfb
(0x00,0x5f)Port 7 States Override: 0xfb
(0x00,0x0e)Port 8 States Override: 0x0a
(why does it force port 5 state?!)

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>

SVN-Revision: 45692

target/linux/bcm53xx/base-files/etc/board.d/02_network

@@ -9,6 +9,9 @@ board_config_update
 
 board=$(cat /proc/device-tree/compatible | tr '\0' '\t' | cut -f 1)
 case "$board" in
+asus,rt-ac87u)
+	ifname=eth1
+	;;
 netgear,r8000)
 	ifname=eth2
 	;;
@@ -32,6 +35,10 @@ if echo "$vlan1ports" | egrep -q "^1 2 3 4 5" && \
    echo "$vlan2ports" | egrep -q "^0 5"; then
 	ucidef_add_switch_vlan "switch0" "1" "1 2 3 4 5t"
 	ucidef_add_switch_vlan "switch0" "2" "0 5t"
+elif echo "$vlan1ports" | egrep -q "^1 2 3 5 7" && \
+     echo "$vlan2ports" | egrep -q "^0 7"; then
+	ucidef_add_switch_vlan "switch0" "1" "1 2 3 5 7t"
+	ucidef_add_switch_vlan "switch0" "2" "0 7t"
 elif echo "$vlan1ports" | egrep -q "^0 1 2 3 5 7 8" && \
      echo "$vlan2ports" | egrep -q "^4 8"; then
 	ucidef_add_switch_vlan "switch0" "1" "0 1 2 3 5 7 8t"

target/linux/bcm53xx/patches-3.18/710-b53-add-hacky-CPU-port-fixes-for-devices-not-using-p.patch

@@ -1,18 +1,18 @@
-From ec2ae8fc837772afd7a89f98c8a1ec71e2ab322b Mon Sep 17 00:00:00 2001
+From 4abdde3ad6bc0b3b157c4bf6ec0bf139d11d07e8 Mon Sep 17 00:00:00 2001
 From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
 Date: Wed, 13 May 2015 14:13:28 +0200
-Subject: [PATCH] b53: add hacky CPU port fix for Netgear R8000
+Subject: [PATCH] b53: add hacky CPU port fixes for devices not using port 5
 MIME-Version: 1.0
 Content-Type: text/plain; charset=UTF-8
 Content-Transfer-Encoding: 8bit
 
 Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
 ---
- drivers/net/phy/b53/b53_common.c | 4 ++++
- 1 file changed, 4 insertions(+)
+ drivers/net/phy/b53/b53_common.c | 6 ++++++
+ 1 file changed, 6 insertions(+)
 
 diff --git a/drivers/net/phy/b53/b53_common.c b/drivers/net/phy/b53/b53_common.c
-index 2b05d5d..ba16107 100644
+index 2b05d5d..fd3b39c 100644
 --- a/drivers/net/phy/b53/b53_common.c
 +++ b/drivers/net/phy/b53/b53_common.c
 @@ -25,6 +25,7 @@
@@ -23,11 +23,13 @@ index 2b05d5d..ba16107 100644
  
  #include "b53_regs.h"
  #include "b53_priv.h"
-@@ -1313,6 +1314,9 @@ static int b53_switch_init(struct b53_device *dev)
+@@ -1313,6 +1314,11 @@ static int b53_switch_init(struct b53_device *dev)
  			sw_dev->cpu_port = 5;
  	}
  
-+	if (of_machine_is_compatible("netgear,r8000"))
++	if (of_machine_is_compatible("asus,rt-ac87u"))
++		sw_dev->cpu_port = 7;
++	else if (of_machine_is_compatible("netgear,r8000"))
 +		sw_dev->cpu_port = 8;
 +
  	/* cpu port is always last */