netdev - Re: [PATCH net-next v2 1/7] net: ti: icssg-prueth: Enable IEP1

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Message-ID: <9766c4f6-b687-49d6-8476-8414928a3a0e@ti.com>
Date: Wed, 21 Aug 2024 17:03:46 +0530
From: "Anwar, Md Danish" <a0501179@...com>
To: Roger Quadros <rogerq@...nel.org>, MD Danish Anwar <danishanwar@...com>,
        Dan Carpenter <dan.carpenter@...aro.org>, Andrew Lunn <andrew@...n.ch>,
        Jan
 Kiszka <jan.kiszka@...mens.com>,
        Vignesh Raghavendra <vigneshr@...com>,
        Javier Carrasco <javier.carrasco.cruz@...il.com>,
        Jacob Keller
	<jacob.e.keller@...el.com>,
        Diogo Ivo <diogo.ivo@...mens.com>, Simon Horman
	<horms@...nel.org>,
        Richard Cochran <richardcochran@...il.com>,
        Paolo Abeni
	<pabeni@...hat.com>, Jakub Kicinski <kuba@...nel.org>,
        Eric Dumazet
	<edumazet@...gle.com>,
        "David S. Miller" <davem@...emloft.net>
CC: <linux-kernel@...r.kernel.org>, <netdev@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>, <srk@...com>
Subject: Re: [PATCH net-next v2 1/7] net: ti: icssg-prueth: Enable IEP1

Hi Roger,

On 8/21/2024 4:57 PM, Roger Quadros wrote:
> Hi,
> 
> On 13/08/2024 10:42, MD Danish Anwar wrote:
>> IEP1 is needed by firmware to enable FDB learning and FDB ageing.
> 
> Required by which firmware?
> 

IEP1 is needed by all ICSSG firmwares (Dual EMAC / Switch / HSR)

> Does dual-emac firmware need this?
> 

Yes, Dual EMAC firmware needs IEP1 to enabled.

>> Always enable IEP1
>>
>> Signed-off-by: MD Danish Anwar <danishanwar@...com>
>> ---
>>  drivers/net/ethernet/ti/icssg/icssg_prueth.c | 14 ++++----------
>>  1 file changed, 4 insertions(+), 10 deletions(-)
>>
>> diff --git a/drivers/net/ethernet/ti/icssg/icssg_prueth.c b/drivers/net/ethernet/ti/icssg/icssg_prueth.c
>> index 53a3e44b99a2..613bd8de6eb8 100644
>> --- a/drivers/net/ethernet/ti/icssg/icssg_prueth.c
>> +++ b/drivers/net/ethernet/ti/icssg/icssg_prueth.c
>> @@ -1256,12 +1256,8 @@ static int prueth_probe(struct platform_device *pdev)
>>  		goto put_iep0;
>>  	}
>>  
>> -	if (prueth->pdata.quirk_10m_link_issue) {
>> -		/* Enable IEP1 for FW in 64bit mode as W/A for 10M FD link detect issue under TX
>> -		 * traffic.
>> -		 */
>> -		icss_iep_init_fw(prueth->iep1);
>> -	}
>> +	/* Enable IEP1 for FW as it's needed by FW for FDB Learning and FDB ageing */
>> +	icss_iep_init_fw(prueth->iep1);
>>  
>>  	/* setup netdev interfaces */
>>  	if (eth0_node) {
>> @@ -1366,8 +1362,7 @@ static int prueth_probe(struct platform_device *pdev)
>>  	}
>>  
>>  exit_iep:
>> -	if (prueth->pdata.quirk_10m_link_issue)
>> -		icss_iep_exit_fw(prueth->iep1);
>> +	icss_iep_exit_fw(prueth->iep1);
>>  	icss_iep_put(prueth->iep1);
>>  
>>  put_iep0:
>> @@ -1424,8 +1419,7 @@ static void prueth_remove(struct platform_device *pdev)
>>  		prueth_netdev_exit(prueth, eth_node);
>>  	}
>>  
>> -	if (prueth->pdata.quirk_10m_link_issue)
>> -		icss_iep_exit_fw(prueth->iep1);
>> +	icss_iep_exit_fw(prueth->iep1);
>>  
>>  	icss_iep_put(prueth->iep1);
>>  	icss_iep_put(prueth->iep0);
> 

-- 
Thanks and Regards,
Md Danish Anwar