[U-Boot] [PATCH] mx6slevk: Fix the reset delay for the the LAN8720 PHY

[Stefano Babic]

On 01/02/2016 14:15, Fabio Estevam wrote:
> From: Fabio Estevam <fabio.estevam at nxp.com>
> 
> Since commit 59370f3fcd1350 ("net: phy: delay only if reset handler is
> registered") Ethernet is no longer functional.
> 
> This commit does not have an issue in itself, but it revelead a problem
> with the Ethernet initialization.
> 
> According to the LAN8720 datasheet tpurstd (time that reset line should
> stay asserted) is 25ms.
> 
> So do as suggested in order to have Ethernet working again.
> 
> Signed-off-by: Fabio Estevam <fabio.estevam at nxp.com>
> ---
>  board/freescale/mx6slevk/mx6slevk.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/board/freescale/mx6slevk/mx6slevk.c b/board/freescale/mx6slevk/mx6slevk.c
> index 5eab4b5..721ec21 100644
> --- a/board/freescale/mx6slevk/mx6slevk.c
> +++ b/board/freescale/mx6slevk/mx6slevk.c
> @@ -156,7 +156,7 @@ static void setup_iomux_fec(void)
>  
>  	/* Reset LAN8720 PHY */
>  	gpio_direction_output(ETH_PHY_RESET , 0);
> -	udelay(1000);
> +	udelay(25000);
>  	gpio_set_value(ETH_PHY_RESET, 1);
>  }


Applied to u-boot-imx, thanks !

Best regards,
Stefano Babic



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