From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stefano Babic Date: Tue, 2 Feb 2016 21:20:33 +0100 Subject: [U-Boot] [PATCH] mx6slevk: Fix the reset delay for the the LAN8720 PHY In-Reply-To: <1454332510-21860-1-git-send-email-festevam@gmail.com> References: <1454332510-21860-1-git-send-email-festevam@gmail.com> Message-ID: <56B10F91.20508@denx.de> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de On 01/02/2016 14:15, Fabio Estevam wrote: > From: Fabio Estevam > > 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 > --- > 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 -- ===================================================================== DENX Software Engineering GmbH, Managing Director: Wolfgang Denk HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: +49-8142-66989-53 Fax: +49-8142-66989-80 Email: sbabic at denx.de =====================================================================