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 <oe5...@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
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