From: Troy Kisky <troy.kisky@boundarydevices.com>
Date: Thu, 2 Oct 2014 19:16:29 +0000 (-0700)
Subject: nitrogen6x: phy: add 100 us delay after phy reset
X-Git-Tag: v2014.10~3^2~19^2~23
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=adc4a2bd03ad6ab4cc7f73609d60ab740c8126e6;p=platform%2Fkernel%2Fu-boot.git

nitrogen6x: phy: add 100 us delay after phy reset

Testing shows that the Micrel PHY may not be completely out
of reset if accessed immediately.

Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>
Signed-off-by: Eric Nelson <eric.nelson@boundarydevices.com>
---

diff --git a/board/boundary/nitrogen6x/nitrogen6x.c b/board/boundary/nitrogen6x/nitrogen6x.c
index e795492..a89a15c 100644
--- a/board/boundary/nitrogen6x/nitrogen6x.c
+++ b/board/boundary/nitrogen6x/nitrogen6x.c
@@ -246,6 +246,7 @@ static void setup_iomux_enet(void)
 	gpio_set_value(IMX_GPIO_NR(1, 27), 1); /* Nitrogen6X PHY reset */
 
 	imx_iomux_v3_setup_multiple_pads(enet_pads2, ARRAY_SIZE(enet_pads2));
+	udelay(100);	/* Wait 100 us before using mii interface */
 }
 
 static iomux_v3_cfg_t const usb_pads[] = {