[U-Boot] [PATCH] tqma6_wru4: Fix the reset delay for the the LAN8720 PHY

Fabio Estevam festevam at gmail.com
Mon Feb 1 14:19:59 CET 2016


From: Fabio Estevam <fabio.estevam at nxp.com>

According to the LAN8720 datasheet tpurstd (time that reset line should
stay asserted) is 25ms.

So do as suggested by the LAN8720 datasheet.

Signed-off-by: Fabio Estevam <fabio.estevam at nxp.com>
---
 board/tqc/tqma6/tqma6_wru4.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/board/tqc/tqma6/tqma6_wru4.c b/board/tqc/tqma6/tqma6_wru4.c
index 4427799..c9a7ab7 100644
--- a/board/tqc/tqma6/tqma6_wru4.c
+++ b/board/tqc/tqma6/tqma6_wru4.c
@@ -177,7 +177,7 @@ static void setup_iomuxc_enet(void)
 	ret = gpio_request(ENET_PHY_RESET_GPIO, "phy-reset");
 	if (!ret)
 		gpio_direction_output(ENET_PHY_RESET_GPIO , 0);
-	udelay(1000);
+	udelay(25000);
 	gpio_set_value(ENET_PHY_RESET_GPIO, 1);
 }
 
-- 
1.9.1



More information about the U-Boot mailing list