[OpenWrt-Devel] [PATCH][ar71xx] Mikrotik Routerboard RB2011 switch fix

[Matt Lee]

Hi Chris,

>This patch is the same as the Routerboard 951G fix, I've built this
>and tested it on my rb-2011uias-2hnd.  However we should check that it
>also works on other/older RB2011 routers which did work OK with the
>unpatched code.
>
>diff --git a/target/linux/ar71xx/files/arch/mips/ath79/mach-rb2011.c
>b/target/linux/ar71xx/files/arch/mips/ath79/mach-rb2011.c
>index b73fae6..951ab94 100644
>--- a/target/linux/ar71xx/files/arch/mips/ath79/mach-rb2011.c
>+++ b/target/linux/ar71xx/files/arch/mips/ath79/mach-rb2011.c
>@@ -270,6 +270,7 @@ static int __init rb2011_setup(u32 flags)
>        rb2011_nand_init();
>
>        ath79_setup_ar934x_eth_cfg(AR934X_ETH_CFG_RGMII_GMAC0 |
>+                                   AR934X_ETH_CFG_RXD_DELAY |
>                                   AR934X_ETH_CFG_SW_ONLY_MODE);
>
>        ath79_register_mdio(1, 0x0);
>@@ -283,7 +284,7 @@ static int __init rb2011_setup(u32 flags)
>        ath79_eth0_data.phy_if_mode = PHY_INTERFACE_MODE_RGMII;
>        ath79_eth0_data.phy_mask = BIT(0);
>        ath79_eth0_data.mii_bus_dev = &ath79_mdio0_device.dev;
>-       ath79_eth0_pll_data.pll_1000 = 0x06000000;
>+       ath79_eth0_pll_data.pll_1000 = 0x3e000000;
>
>        ath79_register_eth(0);
>
>--
>Chris Green
This patch is not working correctly for me on the 2011UiAS-2HnD.  Many
packets are dropped, and I can see many FCS Errors and RxBadByte.

root at OpenWrt:/# swconfig dev ag71xx-mdio.0 port 0 show
Port 0:
        mib: Port 0 MIB counters
RxBroad     : 8
RxPause     : 0
RxMulti     : 15
RxFcsErr    : 800
RxAlignErr  : 0
RxRunt      : 0
RxFragment  : 0
Rx64Byte    : 7
Rx128Byte   : 17323
Rx256Byte   : 6
Rx512Byte   : 9
Rx1024Byte  : 0
Rx1518Byte  : 0
RxMaxByte   : 0
RxTooLong   : 0
RxGoodByte  : 1145334
RxBadByte   : 65266
RxOverFlow  : 0
Filtered    : 11
TxBroad     : 244
TxPause     : 0
TxMulti     : 170
TxUnderRun  : 0
Tx64Byte    : 21
Tx128Byte   : 360
Tx256Byte   : 20
Tx512Byte   : 44
Tx1024Byte  : 14459
Tx1518Byte  : 3
TxMaxByte   : 5683
TxOverSize  : 0
TxByte      : 16836688
TxCollision : 0
TxAbortCol  : 0
TxMultiCol  : 0
TxSingleCol : 0
TxExcDefer  : 0
TxDefer     : 0
TxLateCol   : 0
        pvid: 0
        link: port:0 link:up speed:1000baseT full-duplex txflow rxflow

How can we determine the right value for the  ath79_eth0_pll_data.pll_1000 ?

-matt
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