From: Siva Durga Prasad Paladugu <siva.durga.paladugu@xilinx.com>
Date: Tue, 20 Feb 2018 06:26:19 +0000 (+0530)
Subject: net: zynq_gem: Dont run any phy detection logic for GMII case
X-Git-Tag: v2018.05-rc1~9^2~15
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=d77081cf50489a441739481e096411858c632276;p=platform%2Fkernel%2Fu-boot.git

net: zynq_gem: Dont run any phy detection logic for GMII case

This patch bypasses phy detection logic for GMII interface
and just depend on phy address received from DT. This patch
is required as phy detection logic is different for some phys
like xilinx phy which can be connected over SGMII and GMII
interface.
This fixes the issue of ethernet failures when xilinx phy is
connected over GMII interface.

Signed-off-by: Siva Durga Prasad Paladugu <sivadur@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
---

diff --git a/drivers/net/zynq_gem.c b/drivers/net/zynq_gem.c
index 2cc49bc..1390c36 100644
--- a/drivers/net/zynq_gem.c
+++ b/drivers/net/zynq_gem.c
@@ -325,7 +325,8 @@ static int zynq_phy_init(struct udevice *dev)
 	/* Enable only MDIO bus */
 	writel(ZYNQ_GEM_NWCTRL_MDEN_MASK, &regs->nwctrl);
 
-	if (priv->interface != PHY_INTERFACE_MODE_SGMII) {
+	if ((priv->interface != PHY_INTERFACE_MODE_SGMII) &&
+	    (priv->interface != PHY_INTERFACE_MODE_GMII)) {
 		ret = phy_detection(dev);
 		if (ret) {
 			printf("GEM PHY init failed\n");