From 4e0309630b871ecaf9e247b479c4a4ef3f9667f8 Mon Sep 17 00:00:00 2001
From: Gabor Juhos <juhosg@openwrt.org>
Date: Thu, 20 Feb 2014 17:07:56 +0000
Subject: [PATCH] ar71xx: rb91x: fix pll_1000 value for eth0 to avoid packet
 loss

When the RB91x device uses a GbE link the connection
suffers from packet loss:

  root@OpenWrt:/# ping 192.168.1.254 -s 65507 -c 20 -q
  PING 192.168.1.254 (192.168.1.254): 65507 data bytes

  --- 192.168.1.254 ping statistics ---
  20 packets transmitted, 9 packets received, 55% packet loss
  round-trip min/avg/max = 4.570/4.815/4.999 ms

Using a different PLL value fixes the issue.

  root@OpenWrt:/# ping 192.168.1.254 -s 65507 -c 100 -q
  PING 192.168.1.254 (192.168.1.254): 65507 data bytes

  --- 192.168.1.254 ping statistics ---
  100 packets transmitted, 100 packets received, 0% packet loss
  round-trip min/avg/max = 4.449/5.413/13.870 ms

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>

SVN-Revision: 39642
---
 target/linux/ar71xx/files/arch/mips/ath79/mach-rb91x.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/target/linux/ar71xx/files/arch/mips/ath79/mach-rb91x.c b/target/linux/ar71xx/files/arch/mips/ath79/mach-rb91x.c
index 65d9ee5b9d..3cbffed291 100644
--- a/target/linux/ar71xx/files/arch/mips/ath79/mach-rb91x.c
+++ b/target/linux/ar71xx/files/arch/mips/ath79/mach-rb91x.c
@@ -156,6 +156,7 @@ static void __init rb711gr100_setup(void)
 	ath79_init_mac(ath79_eth0_data.mac_addr, ath79_mac_base, 0);
 	ath79_eth0_data.phy_if_mode = PHY_INTERFACE_MODE_RGMII;
 	ath79_eth0_data.phy_mask = BIT(0);
+	ath79_eth0_pll_data.pll_1000 = 0x02000000;
 
 	ath79_register_eth(0);