From: Marek Vasut <marex@denx.de>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH V4] ARM: mx6: Add support for Kosagi Novena
Date: Sat, 27 Sep 2014 22:29:44 +0200 [thread overview]
Message-ID: <201409272229.44301.marex@denx.de> (raw)
In-Reply-To: <aaf350a9-c3c0-43e0-845e-f26de0402fb4@email.android.com>
On Saturday, September 27, 2014 at 06:46:24 PM, Sean Cross wrote:
> I asked Bunnie about this, and the routing is 50 ohms.
>
> On 24 September, 2014 5:40:59 pm GMT+08:00, Marek Vasut <marex@denx.de> wrote:
> >On Wednesday, September 24, 2014 at 04:46:42 AM, Nikolay Dimitrov
> >
> >wrote:
> >> Hi Marek,
> >>
> >> Following are some comments about FEC Ethernet:
> >>
> >> On 09/23/2014 01:18 PM, Marek Vasut wrote:
> >> > +#define ENET_PAD_CTRL \
> >> > + (PAD_CTL_PKE | PAD_CTL_PUE | \
> >> > + PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED | \
> >> > + PAD_CTL_DSE_40ohm | PAD_CTL_HYS)
> >> > +
> >>
> >> PAD_CTL_SPEED_MED falls on reserved bits (7-6).
Fixed.
[...]
> >> > +
> >> > + gpio_direction_output(IMX_GPIO_NR(3, 23), 0);
> >> > + gpio_direction_output(IMX_GPIO_NR(6, 30), 1);
> >> > + gpio_direction_output(IMX_GPIO_NR(6, 25), 1);
> >> > + gpio_direction_output(IMX_GPIO_NR(6, 27), 1);
> >> > + gpio_direction_output(IMX_GPIO_NR(6, 28), 1);
> >> > + gpio_direction_output(IMX_GPIO_NR(6, 29), 1);
> >> > + gpio_direction_output(IMX_GPIO_NR(6, 24), 1);
> >> > +}
> >>
> >> I think that setting the iomuxes immediately one after the other
> >
> >doesn't
> >
> >> achieve the intended goal. After the 2nd iomux setup, the pads are
> >> connected to the FEC, not to the GPIOs.
Good point, moved the second mux below the GPIO settings.
But what about the reset timing?
Best regards,
Marek Vasut
next prev parent reply other threads:[~2014-09-27 20:29 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-23 10:18 [U-Boot] [PATCH V4] ARM: mx6: Add support for Kosagi Novena Marek Vasut
2014-09-23 23:57 ` Nikolay Dimitrov
2014-09-24 9:37 ` Marek Vasut
2014-09-24 11:03 ` Nikolay Dimitrov
2014-09-24 11:15 ` Marek Vasut
2014-09-24 2:46 ` Nikolay Dimitrov
2014-09-24 9:40 ` Marek Vasut
2014-09-27 16:46 ` Sean Cross
2014-09-27 20:29 ` Marek Vasut [this message]
2014-10-06 15:35 ` Sean Cross
2014-10-06 15:57 ` Marek Vasut
2014-10-06 12:50 ` Nikolay Dimitrov
2014-10-06 14:00 ` Marek Vasut
2014-10-09 0:50 ` Nikolay Dimitrov
2014-10-09 0:54 ` Marek Vasut
2014-09-28 4:44 ` Nikolay Dimitrov
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