[U-Boot] [PATCH v2 5/9] AVR32: macb - Disable 100mbps if clock is slow

Jean-Christophe PLAGNIOL-VILLARD
2009-01-23T15:38:56Z

On 12:56 Fri 23 Jan , Gunnar Rangoy wrote:
> From: Olav Morken <olavmrk@gmail.com>
>
> For 100mbps operation, the ethernet controller requires a 25 MHz clock
> in MII mode, and a 50 MHz clock in RMII mode. If the clock is slower,
> disable 100 Mbps mode.
>
> Signed-off-by: Gunnar Rangoy <gunnar@rangoy.com>
> Signed-off-by: Paul Driveklepp <pauldriveklepp@gmail.com>
> Signed-off-by: Olav Morken <olavmrk@gmail.com>
> ---
> drivers/net/macb.c | 12 +++++++++++-
> 1 files changed, 11 insertions(+), 1 deletions(-)
>
> diff --git a/drivers/net/macb.c b/drivers/net/macb.c
> index 08bebf7..d47a052 100644
> --- a/drivers/net/macb.c
> +++ b/drivers/net/macb.c
> @@ -297,7 +297,17 @@ static void macb_phy_reset(struct macb_device *macb)
> int i;
> u16 status, adv;
>
> - adv = ADVERTISE_CSMA | ADVERTISE_ALL;
> + adv = ADVERTISE_CSMA | ADVERTISE_ALL ;
??
> +
> +#ifdef CONFIG_MACB_FORCE10M
> + printf("%s: 100Mbps is not supported on this board - forcing 10Mbps.\n",
> + netdev->name);
> +
> + adv &= ~ADVERTISE_100FULL;
> + adv &= ~ADVERTISE_100HALF;
> + adv &= ~ADVERTISE_100BASE4;
> +#endif
not a fan
could you be more specific about the problem?

Best Regards,
J.