* [U-Boot] [PATCH] driver/net/fec: support fixed speed connection
@ 2016-06-22 10:07 Hannes Schmelzer
2016-07-06 15:13 ` Joe Hershberger
2016-07-11 14:23 ` Stefano Babic
0 siblings, 2 replies; 4+ messages in thread
From: Hannes Schmelzer @ 2016-06-22 10:07 UTC (permalink / raw)
To: u-boot
If MAC is directly connected to another MAC (like a switch for example)
we don't need to probe for a phy, autoneogation and so on. We simply
have to setup speed.
Signed-off-by: Hannes Schmelzer <oe5hpm@oevsv.at>
---
doc/README.fec_mxc | 5 +++++
drivers/net/fec_mxc.c | 4 ++++
2 files changed, 9 insertions(+)
diff --git a/doc/README.fec_mxc b/doc/README.fec_mxc
index ed7e47d..9ca6ac2 100644
--- a/doc/README.fec_mxc
+++ b/doc/README.fec_mxc
@@ -27,6 +27,11 @@ CONFIG_FEC_MXC_PHYADDR
Optional, selects the exact phy address that should be connected
and function fecmxc_initialize will try to initialize it.
+CONFIG_FEC_FIXED_SPEED
+ Optional, selects a fixed speed on the MAC interface without asking some
+ phy. This is usefull if there is a direct MAC <-> MAC connection, for
+ example if the CPU is connected directly via the RGMII interface to a
+ ethernet-switch.
Reading the ethaddr from the SoC eFuses:
if CONFIG_FEC_MXC is defined and the U-Boot environment does not contain the
diff --git a/drivers/net/fec_mxc.c b/drivers/net/fec_mxc.c
index 360f8e4..e871b3e 100644
--- a/drivers/net/fec_mxc.c
+++ b/drivers/net/fec_mxc.c
@@ -233,6 +233,7 @@ static int miiphy_restart_aneg(struct eth_device *dev)
return ret;
}
+#ifndef CONFIG_FEC_FIXED_SPEED
static int miiphy_wait_aneg(struct eth_device *dev)
{
uint32_t start;
@@ -260,6 +261,7 @@ static int miiphy_wait_aneg(struct eth_device *dev)
return 0;
}
+#endif /* CONFIG_FEC_FIXED_SPEED */
#endif
static int fec_rx_task_enable(struct fec_priv *fec)
@@ -502,6 +504,8 @@ static int fec_open(struct eth_device *edev)
}
speed = fec->phydev->speed;
}
+#elif CONFIG_FEC_FIXED_SPEED
+ speed = CONFIG_FEC_FIXED_SPEED;
#else
miiphy_wait_aneg(edev);
speed = miiphy_speed(edev->name, fec->phy_id);
--
1.9.1
^ permalink raw reply related [flat|nested] 4+ messages in thread
* [U-Boot] [PATCH] driver/net/fec: support fixed speed connection
2016-06-22 10:07 [U-Boot] [PATCH] driver/net/fec: support fixed speed connection Hannes Schmelzer
@ 2016-07-06 15:13 ` Joe Hershberger
2016-07-11 14:23 ` Stefano Babic
1 sibling, 0 replies; 4+ messages in thread
From: Joe Hershberger @ 2016-07-06 15:13 UTC (permalink / raw)
To: u-boot
On Wed, Jun 22, 2016 at 5:07 AM, Hannes Schmelzer <oe5hpm@oevsv.at> wrote:
> If MAC is directly connected to another MAC (like a switch for example)
> we don't need to probe for a phy, autoneogation and so on. We simply
> have to setup speed.
>
> Signed-off-by: Hannes Schmelzer <oe5hpm@oevsv.at>
You may want to add it to Kconfig, but that's up to Stefano.
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
^ permalink raw reply [flat|nested] 4+ messages in thread
* [U-Boot] [PATCH] driver/net/fec: support fixed speed connection
2016-06-22 10:07 [U-Boot] [PATCH] driver/net/fec: support fixed speed connection Hannes Schmelzer
2016-07-06 15:13 ` Joe Hershberger
@ 2016-07-11 14:23 ` Stefano Babic
2016-07-11 14:36 ` Hannes Schmelzer
1 sibling, 1 reply; 4+ messages in thread
From: Stefano Babic @ 2016-07-11 14:23 UTC (permalink / raw)
To: u-boot
Hi Hannes,
On 22/06/2016 12:07, Hannes Schmelzer wrote:
> If MAC is directly connected to another MAC (like a switch for example)
> we don't need to probe for a phy, autoneogation and so on. We simply
> have to setup speed.
>
> Signed-off-by: Hannes Schmelzer <oe5hpm@oevsv.at>
> ---
>
> doc/README.fec_mxc | 5 +++++
> drivers/net/fec_mxc.c | 4 ++++
> 2 files changed, 9 insertions(+)
>
> diff --git a/doc/README.fec_mxc b/doc/README.fec_mxc
> index ed7e47d..9ca6ac2 100644
> --- a/doc/README.fec_mxc
> +++ b/doc/README.fec_mxc
> @@ -27,6 +27,11 @@ CONFIG_FEC_MXC_PHYADDR
> Optional, selects the exact phy address that should be connected
> and function fecmxc_initialize will try to initialize it.
>
> +CONFIG_FEC_FIXED_SPEED
> + Optional, selects a fixed speed on the MAC interface without asking some
> + phy. This is usefull if there is a direct MAC <-> MAC connection, for
> + example if the CPU is connected directly via the RGMII interface to a
> + ethernet-switch.
>
> Reading the ethaddr from the SoC eFuses:
> if CONFIG_FEC_MXC is defined and the U-Boot environment does not contain the
> diff --git a/drivers/net/fec_mxc.c b/drivers/net/fec_mxc.c
> index 360f8e4..e871b3e 100644
> --- a/drivers/net/fec_mxc.c
> +++ b/drivers/net/fec_mxc.c
> @@ -233,6 +233,7 @@ static int miiphy_restart_aneg(struct eth_device *dev)
> return ret;
> }
>
> +#ifndef CONFIG_FEC_FIXED_SPEED
> static int miiphy_wait_aneg(struct eth_device *dev)
> {
> uint32_t start;
> @@ -260,6 +261,7 @@ static int miiphy_wait_aneg(struct eth_device *dev)
>
> return 0;
> }
> +#endif /* CONFIG_FEC_FIXED_SPEED */
> #endif
>
> static int fec_rx_task_enable(struct fec_priv *fec)
> @@ -502,6 +504,8 @@ static int fec_open(struct eth_device *edev)
> }
> speed = fec->phydev->speed;
> }
> +#elif CONFIG_FEC_FIXED_SPEED
> + speed = CONFIG_FEC_FIXED_SPEED;
> #else
> miiphy_wait_aneg(edev);
> speed = miiphy_speed(edev->name, fec->phy_id);
>
Really I had already sent a patch for this issue, and I merged this into
u-boot-imx, - next
http://git.denx.de/?p=u-boot/u-boot-imx.git;a=commit;h=57b7371e24e429ee37403cfb084d142cf7699bd7
Anyway, your patch is more complete as mine. I will drop my patch and
substitute with your.
Best regards,
Stefano Babic
--
=====================================================================
DENX Software Engineering GmbH, Managing Director: Wolfgang Denk
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: +49-8142-66989-53 Fax: +49-8142-66989-80 Email: sbabic at denx.de
=====================================================================
^ permalink raw reply [flat|nested] 4+ messages in thread
* [U-Boot] [PATCH] driver/net/fec: support fixed speed connection
2016-07-11 14:23 ` Stefano Babic
@ 2016-07-11 14:36 ` Hannes Schmelzer
0 siblings, 0 replies; 4+ messages in thread
From: Hannes Schmelzer @ 2016-07-11 14:36 UTC (permalink / raw)
To: u-boot
On 07/11/2016 04:23 PM, Stefano Babic wrote:
> Hi Hannes,
Hi Stefano,
>
> On 22/06/2016 12:07, Hannes Schmelzer wrote:
>> If MAC is directly connected to another MAC (like a switch for example)
>> we don't need to probe for a phy, autoneogation and so on. We simply
>> have to setup speed.
>>
>> Signed-off-by: Hannes Schmelzer <oe5hpm@oevsv.at>
>> ---
>>
>> doc/README.fec_mxc | 5 +++++
>> drivers/net/fec_mxc.c | 4 ++++
>> 2 files changed, 9 insertions(+)
>>
>> diff --git a/doc/README.fec_mxc b/doc/README.fec_mxc
>> index ed7e47d..9ca6ac2 100644
>> --- a/doc/README.fec_mxc
>> +++ b/doc/README.fec_mxc
>> @@ -27,6 +27,11 @@ CONFIG_FEC_MXC_PHYADDR
>> Optional, selects the exact phy address that should be connected
>> and function fecmxc_initialize will try to initialize it.
>>
>> +CONFIG_FEC_FIXED_SPEED
>> + Optional, selects a fixed speed on the MAC interface without asking some
>> + phy. This is usefull if there is a direct MAC <-> MAC connection, for
>> + example if the CPU is connected directly via the RGMII interface to a
>> + ethernet-switch.
>>
>> Reading the ethaddr from the SoC eFuses:
>> if CONFIG_FEC_MXC is defined and the U-Boot environment does not contain the
>> diff --git a/drivers/net/fec_mxc.c b/drivers/net/fec_mxc.c
>> index 360f8e4..e871b3e 100644
>> --- a/drivers/net/fec_mxc.c
>> +++ b/drivers/net/fec_mxc.c
>> @@ -233,6 +233,7 @@ static int miiphy_restart_aneg(struct eth_device *dev)
>> return ret;
>> }
>>
>> +#ifndef CONFIG_FEC_FIXED_SPEED
>> static int miiphy_wait_aneg(struct eth_device *dev)
>> {
>> uint32_t start;
>> @@ -260,6 +261,7 @@ static int miiphy_wait_aneg(struct eth_device *dev)
>>
>> return 0;
>> }
>> +#endif /* CONFIG_FEC_FIXED_SPEED */
>> #endif
>>
>> static int fec_rx_task_enable(struct fec_priv *fec)
>> @@ -502,6 +504,8 @@ static int fec_open(struct eth_device *edev)
>> }
>> speed = fec->phydev->speed;
>> }
>> +#elif CONFIG_FEC_FIXED_SPEED
>> + speed = CONFIG_FEC_FIXED_SPEED;
>> #else
>> miiphy_wait_aneg(edev);
>> speed = miiphy_speed(edev->name, fec->phy_id);
>>
>
> Really I had already sent a patch for this issue, and I merged this into
> u-boot-imx, - next
>
> http://git.denx.de/?p=u-boot/u-boot-imx.git;a=commit;h=57b7371e24e429ee37403cfb084d142cf7699bd7
>
> Anyway, your patch is more complete as mine. I will drop my patch and
> substitute with your.
many thanks, looking forward for getting merged into u-boot master.
> Best regards,
> Stefano Babic
cheers,
Hannes
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2016-07-11 14:36 UTC | newest]
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2016-06-22 10:07 [U-Boot] [PATCH] driver/net/fec: support fixed speed connection Hannes Schmelzer
2016-07-06 15:13 ` Joe Hershberger
2016-07-11 14:23 ` Stefano Babic
2016-07-11 14:36 ` Hannes Schmelzer
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