[net-next] bnx2x: Fix link problem with some DACs

Change 2wire transfer rate of SFP+ module EEPROM from 400Khz to 100Khz since some DACs(direct attached cables) do not work at 400Khz.

Reported-by: Krzysztof Oldzki <ole@ans.pl>
Signed-off-by: Yaniv Rosner <yanivr@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
---



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On 2010-06-13 13:43, Yaniv Rosner wrote:
> Change 2wire transfer rate of SFP+ module EEPROM from 400Khz to 100Khz since some DACs(direct attached cables) do not work at 400Khz.
>
> Reported-by: Krzysztof Oldzki <ole@ans.pl>
> Signed-off-by: Yaniv Rosner <yanivr@broadcom.com>
> Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
> ---
> diff --git a/drivers/net/bnx2x_link.c b/drivers/net/bnx2x_link.c
> index a22a7e0..9b15b64 100644
> --- a/drivers/net/bnx2x_link.c
> +++ b/drivers/net/bnx2x_link.c
> @@ -4274,7 +4274,7 @@ static u8 bnx2x_ext_phy_init(struct link_params *params, struct link_vars *vars)
>   				       ext_phy_addr,
>   				       MDIO_PMA_DEVAD,
>   				       MDIO_PMA_REG_8727_TWO_WIRE_SLAVE_ADDR,
> -				       0xa001);
> +				       0xa101);
>
>   			/* Set TX PreEmphasis if needed */
>   			if ((params->feature_config_flags&

Tested-by: Krzysztof Piotr Oledzki <ole@ans.pl>

However, I believe the comment before this code should also be changed, 
because it is now: "Set 2-wire transfer rate to 400Khz since 100Khz
is not operational ".

Thanks.

Best regards,

			Krzysztof Olędzki
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From: Krzysztof Olędzki <ole@ans.pl>
Date: Sun, 13 Jun 2010 23:27:55 +0200

> On 2010-06-13 13:43, Yaniv Rosner wrote:
>> Change 2wire transfer rate of SFP+ module EEPROM from 400Khz to 100Khz
>> since some DACs(direct attached cables) do not work at 400Khz.
>>
>> Reported-by: Krzysztof Oldzki <ole@ans.pl>
>> Signed-off-by: Yaniv Rosner <yanivr@broadcom.com>
>> Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
>> ---
>> diff --git a/drivers/net/bnx2x_link.c b/drivers/net/bnx2x_link.c
>> index a22a7e0..9b15b64 100644
>> --- a/drivers/net/bnx2x_link.c
>> +++ b/drivers/net/bnx2x_link.c
>> @@ -4274,7 +4274,7 @@ static u8 bnx2x_ext_phy_init(struct link_params
>> *params, struct link_vars *vars)
>>   				       ext_phy_addr,
>>   				       MDIO_PMA_DEVAD,
>>   				       MDIO_PMA_REG_8727_TWO_WIRE_SLAVE_ADDR,
>> -				       0xa001);
>> +				       0xa101);
>>
>>   			/* Set TX PreEmphasis if needed */
>>   			if ((params->feature_config_flags&
> 
> Tested-by: Krzysztof Piotr Oledzki <ole@ans.pl>
> 
> However, I believe the comment before this code should also be
> changed, because it is now: "Set 2-wire transfer rate to 400Khz since
> 100Khz
> is not operational ".

Agreed, Yaniv please update your patch.
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