[U-Boot] How do I use AM335x eth1 rather than eth0 ?

[U-Boot] How do I use AM335x eth1 rather than eth0 ?

[Mark Jackson]

We have a dual Ethernet board (based on the BeagelBone) but with both Ethernet ports connected.

I'm wanting to use eth1 (rather than eth0), so in my board.c file, I changed:-

static struct cpsw_slave_data cpsw_slaves[] = {
	{
		.slave_reg_ofs	= 0x208,
		.sliver_reg_ofs	= 0xd80,
		.phy_id		= 0,
	},
	{
		.slave_reg_ofs	= 0x308,
		.sliver_reg_ofs	= 0xdc0,
		.phy_id		= 1,
	},
};

... to ...

static struct cpsw_slave_data cpsw_slaves[] = {
	{
		.slave_reg_ofs	= 0x308,
		.sliver_reg_ofs	= 0xdc0,
		.phy_id		= 1,
	},
	{
		.slave_reg_ofs	= 0x208,
		.sliver_reg_ofs	= 0xd80,
		.phy_id		= 0,
	},
};

... assuming that eth0 would now be ignored (as only 1 slave is configured).

But (eg) dhcp still only responds on eth0 !?!

What else do I have to change ?

Cheers
Mark J.

[U-Boot] How do I use AM335x eth1 rather than eth0 ?

[Mark Jackson]

We have a dual Ethernet board (based on the BeagelBone) but with both Ethernet ports connected.

I'm wanting to use eth1 (rather than eth0), so in my board.c file, I changed:-

static struct cpsw_slave_data cpsw_slaves[] = {
	{
		.slave_reg_ofs	= 0x208,
		.sliver_reg_ofs	= 0xd80,
		.phy_id		= 0,
	},
	{
		.slave_reg_ofs	= 0x308,
		.sliver_reg_ofs	= 0xdc0,
		.phy_id		= 1,
	},
};

... to ...

static struct cpsw_slave_data cpsw_slaves[] = {
	{
		.slave_reg_ofs	= 0x308,
		.sliver_reg_ofs	= 0xdc0,
		.phy_id		= 1,
	},
	{
		.slave_reg_ofs	= 0x208,
		.sliver_reg_ofs	= 0xd80,
		.phy_id		= 0,
	},
};

... assuming that eth0 would now be ignored (as only 1 slave is configured).

But (eg) dhcp still only responds on eth0 !?!

What else do I have to change ?

Cheers
Mark J.

[U-Boot] How do I use AM335x eth1 rather than eth0 ?

[Tom Rini]

On Fri, Apr 12, 2013 at 11:56:57AM +0100, Mark Jackson wrote:

> We have a dual Ethernet board (based on the BeagelBone) but with both Ethernet ports connected.
> 
> I'm wanting to use eth1 (rather than eth0), so in my board.c file, I changed:-
> 
> static struct cpsw_slave_data cpsw_slaves[] = {
> 	{
> 		.slave_reg_ofs	= 0x208,
> 		.sliver_reg_ofs	= 0xd80,
> 		.phy_id		= 0,
> 	},
> 	{
> 		.slave_reg_ofs	= 0x308,
> 		.sliver_reg_ofs	= 0xdc0,
> 		.phy_id		= 1,
> 	},
> };
> 
> ... to ...
> 
> static struct cpsw_slave_data cpsw_slaves[] = {
> 	{
> 		.slave_reg_ofs	= 0x308,
> 		.sliver_reg_ofs	= 0xdc0,
> 		.phy_id		= 1,
> 	},
> 	{
> 		.slave_reg_ofs	= 0x208,
> 		.sliver_reg_ofs	= 0xd80,
> 		.phy_id		= 0,
> 	},
> };
> 
> ... assuming that eth0 would now be ignored (as only 1 slave is configured).
> 
> But (eg) dhcp still only responds on eth0 !?!
> 
> What else do I have to change ?

Good question, do you have both ports working in Linux yet?  The EVM-SK
design supports two interfaces and I know the cpsw driver in the kernel
required some changes to support two.  I strongly suspect similar
changes would be required in the U-Boot driver (I don't have any
specific links other than look at the vendor kernel tree).

-- 
Tom
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[U-Boot] How do I use AM335x eth1 rather than eth0 ?

[Mark Jackson]

On 12/04/13 17:05, Tom Rini wrote:
> On Fri, Apr 12, 2013 at 11:56:57AM +0100, Mark Jackson wrote:
>
>> We have a dual Ethernet board (based on the BeagelBone) but with both Ethernet ports connected.
>>
>> I'm wanting to use eth1 (rather than eth0), so in my board.c file, I changed:-

<snip>

>> ... assuming that eth0 would now be ignored (as only 1 slave is configured).
>>
>> But (eg) dhcp still only responds on eth0 !?!
>>
>> What else do I have to change ?
>
> Good question, do you have both ports working in Linux yet?  The EVM-SK
> design supports two interfaces and I know the cpsw driver in the kernel
> required some changes to support two.  I strongly suspect similar
> changes would be required in the U-Boot driver (I don't have any
> specific links other than look at the vendor kernel tree).

Well, I've realised I needed to change CONFIG_PHY_ADDR in my board 
config file.

So the link up/down portion now works to PHY#2, but I'm still unable to 
ping anything from our board.

I'm guessing there's some hard-coded assumptions in the cpsw.c driver. 
I've taken quick look at the Ethernet section of the TRM, but that's 
*waaaay* over my head !?!

I've so far been unable to get Linux to see the 2nd port, and there is 
no "vendor kernel tree" ... I'm the vendor :-)

Mark J.

[U-Boot] How do I use AM335x eth1 rather than eth0 ?

[Bo Shen]

Hi Mark,

On 04/12/2013 06:32 PM, Mark Jackson wrote:
> We have a dual Ethernet board (based on the BeagelBone) but with both Ethernet ports connected.
>
> I'm wanting to use eth1 (rather than eth0), so in my board.c file, I changed:-
>
> static struct cpsw_slave_data cpsw_slaves[] = {
> 	{
> 		.slave_reg_ofs	= 0x208,
> 		.sliver_reg_ofs	= 0xd80,
> 		.phy_id		= 0,
> 	},
> 	{
> 		.slave_reg_ofs	= 0x308,
> 		.sliver_reg_ofs	= 0xdc0,
> 		.phy_id		= 1,
> 	},
> };
>
> ... to ...
>
> static struct cpsw_slave_data cpsw_slaves[] = {
> 	{
> 		.slave_reg_ofs	= 0x308,
> 		.sliver_reg_ofs	= 0xdc0,
> 		.phy_id		= 1,
> 	},
> 	{
> 		.slave_reg_ofs	= 0x208,
> 		.sliver_reg_ofs	= 0xd80,
> 		.phy_id		= 0,
> 	},
> };
>
> ... assuming that eth0 would now be ignored (as only 1 slave is configured).
>
> But (eg) dhcp still only responds on eth0 !?!
>
> What else do I have to change ?

Have you try "setenv ethprime eth1"? Then reset board, and do dhcp.

Best Regards,
Bo Shen

>
> Cheers
> Mark J.
> _______________________________________________
> U-Boot mailing list
> U-Boot at lists.denx.de
> http://lists.denx.de/mailman/listinfo/u-boot

[U-Boot] How do I use AM335x eth1 rather than eth0 ?

[Wolfgang Denk]

Dear Bo Shen,

In message <517015FC.20007@gmail.com> you wrote:
> 
> > What else do I have to change ?
> 
> Have you try "setenv ethprime eth1"? Then reset board, and do dhcp.

Before thje reset, doi also a "saveenv" to make the setting stick.

Or "setenv ethact eth1" and retry then (without reset).

Best regards,

Wolfgang Denk

-- 
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de

[U-Boot] How do I use AM335x eth1 rather than eth0 ?

[Bo Shen]

Hi Wolfgang,

On 04/19/2013 01:23 AM, Wolfgang Denk wrote:
> Dear Bo Shen,
>
> In message <517015FC.20007@gmail.com> you wrote:
>>> What else do I have to change ?
>> Have you try "setenv ethprime eth1"? Then reset board, and do dhcp.
> Before thje reset, doi also a "saveenv" to make the setting stick.
>
> Or "setenv ethact eth1" and retry then (without reset).

Thanks for you information, without reset is better.

Best Regards,
Bo Shen

>
> Best regards,
>
> Wolfgang Denk
>