From mboxrd@z Thu Jan 1 00:00:00 1970 From: Hannes Schmelzer Date: Mon, 11 Jul 2016 16:36:41 +0200 Subject: [U-Boot] [PATCH] driver/net/fec: support fixed speed connection In-Reply-To: <5783ABF3.2050303@denx.de> References: <1466590034-15127-1-git-send-email-oe5hpm@oevsv.at> <5783ABF3.2050303@denx.de> Message-ID: <5783AEF9.4000808@schmelzer.or.at> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de 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 >> --- >> >> 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