[PATCH u-boot 2/4] eth/r8152: reset PHY after setting it

Marek Vasut marex at denx.de
Tue Jun 9 16:22:28 CEST 2020


On 6/9/20 10:53 AM, Hayes Wang wrote:
> Some settings of PHY have to work after resetting PHY.
> 
> Signed-off-by: Hayes Wang <hayeswang at realtek.com>
> ---
>  drivers/usb/eth/r8152.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/usb/eth/r8152.c b/drivers/usb/eth/r8152.c
> index dbb1721882..d774a0fa63 100644
> --- a/drivers/usb/eth/r8152.c
> +++ b/drivers/usb/eth/r8152.c
> @@ -947,7 +947,7 @@ static int rtl8152_set_speed(struct r8152 *tp, u8 autoneg, u16 speed, u8 duplex)
>  			return -EINVAL;
>  		}
>  
> -		bmcr = BMCR_ANENABLE | BMCR_ANRESTART;
> +		bmcr = BMCR_ANENABLE | BMCR_ANRESTART | BMCR_RESET;

Do you really need to reset a PHY while resetting the autonegotiation ?
I think if you reset the PHY , then the ANEG operation is restarted by
default or undefined, no ?


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