Olav Morken wrote:
> 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 100mbps mode.
>
> Signed-off-by: Gunnar Rangoy <[EMAIL PROTECTED]>
> Signed-off-by: Paul Driveklepp <[EMAIL PROTECTED]>
> Signed-off-by: Olav Morken <[EMAIL PROTECTED]>
> ---
> drivers/net/macb.c | 23 ++++++++++++++++++++++-
> 1 files changed, 22 insertions(+), 1 deletions(-)
>
> diff --git a/drivers/net/macb.c b/drivers/net/macb.c
> index 08bebf7..4fef374 100644
> --- a/drivers/net/macb.c
> +++ b/drivers/net/macb.c
> @@ -296,8 +296,29 @@ static void macb_phy_reset(struct macb_device *macb)
> struct eth_device *netdev = &macb->netdev;
> int i;
> u16 status, adv;
> + int rmii_mode;
> + unsigned min_hz;
> +
> +#ifdef CONFIG_RMII
> + rmii_mode = 1;
> + min_hz = 50000000;
> +#else
> + rmii_mode = 0;
> + min_hz = 25000000;
> +#endif
> +
> + adv = ADVERTISE_CSMA | ADVERTISE_ALL ;
> +
> + if (get_hsb_clk_rate() < min_hz) {
> + printf("%s: HSB clock < %u MHz in %s mode - "
> + "disabling 100mbit.\n", netdev->name, min_hz / 1000000,
> + (rmii_mode ? "RMII" : "MII"));
> +
> + adv &= ~ADVERTISE_100FULL;
> + adv &= ~ADVERTISE_100HALF;
> + adv &= ~ADVERTISE_100BASE4;
> + }
>
> - adv = ADVERTISE_CSMA | ADVERTISE_ALL;
> macb_mdio_write(macb, MII_ADVERTISE, adv);
> printf("%s: Starting autonegotiation...\n", netdev->name);
> macb_mdio_write(macb, MII_BMCR, (BMCR_ANENABLE
>
Applied to net/testing.
regards,
Ben
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