[U-Boot] [PATCH V4] ARM: mx6: Add support for Kosagi Novena

Marek Vasut
2014-09-27T20:29:44Z

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