From: Fugang Duan <B38611@freescale.com>
Date: Fri, 4 Nov 2011 08:21:31 +0000 (+0800)
Subject: ENGR00159982 - [MX6Q]: Add FEC phy save power function.
X-Git-Tag: v3.0.35-fsl~1944
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=bd2bb96f4a92ca7e324c453ba81246bda8c0dbbe;p=karo-tx-linux.git

ENGR00159982 - [MX6Q]: Add FEC phy save power function.

- Set Phy AR8031 to saving power mode while no cable connect.

Signed-off-by: Fugang Duan  <B38611@freescale.com>
---

diff --git a/arch/arm/mach-mx6/board-mx6q_arm2.c b/arch/arm/mach-mx6/board-mx6q_arm2.c
index a6e57d9bc4f7..01a15200bf7e 100644
--- a/arch/arm/mach-mx6/board-mx6q_arm2.c
+++ b/arch/arm/mach-mx6/board-mx6q_arm2.c
@@ -497,8 +497,23 @@ static int mx6q_arm2_fec_phy_init(struct phy_device *phydev)
 	return 0;
 }
 
+static int mx6q_arm2_fec_power_hibernate(struct phy_device *phydev)
+{
+	unsigned short val;
+
+	/*set AR8031 debug reg 0xb to hibernate power*/
+	phy_write(phydev, 0x1d, 0xb);
+	val = phy_read(phydev, 0x1e);
+
+	val |= 0x8000;
+	phy_write(phydev, 0x1e, val);
+
+	return 0;
+}
+
 static struct fec_platform_data fec_data __initdata = {
 	.init = mx6q_arm2_fec_phy_init,
+	.power_hibernate = mx6q_arm2_fec_power_hibernate,
 	.phy = PHY_INTERFACE_MODE_RGMII,
 };