Le 16/12/2015 11:27, Gregory CLEMENT a écrit :
> During the initialization of PHY the gigabit bit capable is set if the
> controller is a GEM. However, for sama5d2 and sama5d4, the GEM is
> configured to support only 10/100.
>
> Improperly setting the GBE capability leads to an unresponsive MAC
> controller. This patch fix this behavior allowing to use the gmac with
> these SoCs.
>
> Suggested-by: Nicolas Ferre <nicolas.fe...@atmel.com>
> Signed-off-by: Gregory CLEMENT <gregory.clem...@free-electrons.com>
>
> fix gem
> ---
> drivers/net/macb.c | 13 +++++++++++--
> 1 file changed, 11 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/net/macb.c b/drivers/net/macb.c
> index a5c1880..ab38f48 100644
> --- a/drivers/net/macb.c
> +++ b/drivers/net/macb.c
> @@ -109,6 +109,15 @@ static int macb_is_gem(struct macb_device *macb)
> return MACB_BFEXT(IDNUM, macb_readl(macb, MID)) == 0x2;
> }
>
> +static int gem_is_gigabit_capable(struct macb_device *macb)
> +{
> + /*
> + * The GEM controllers embeded in SAMA5D2 and SAMA5D4 are
> + * configured to support only 10/100.
> + */
> + return macb_is_gem(macb) && !cpu_is_sama5d2() && !cpu_is_sama5d2();
Typo here: sama5d2 twice!
;-)
> +}
> +
> static void macb_mdio_write(struct macb_device *macb, u8 reg, u16 value)
> {
> unsigned long netctl;
> @@ -480,8 +489,8 @@ static int macb_phy_init(struct macb_device *macb)
> return 0;
> }
>
> - /* First check for GMAC */
> - if (macb_is_gem(macb)) {
> + /* First check for GMAC and that it is GiB capable */
> + if (gem_is_gigabit_capable(macb))
> lpa = macb_mdio_read(macb, MII_STAT1000);
>
> if (lpa & (LPA_1000FULL | LPA_1000HALF)) {
>
--
Nicolas Ferre
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