From 2ec4d10b65d1f7d45098606e9a6857d587c3027c Mon Sep 17 00:00:00 2001
From: Andrea Merello <andrea.merello@gmail.com>
Date: Thu, 26 May 2016 18:24:28 +0200
Subject: [PATCH] phy: atheros: add support for RGMII_ID, RGMII_TXID and
RGMII_RXID
This adds support for internal delay on RX and TX on RGMII interface for the
AR8035 phy.
This is basically the same Linux driver do. Tested on a Zynq Zturn board (for
which u-boot support in is my tree; first patch waiting ML approval)
Signed-off-by: Andrea Merello <andrea.merello@gmail.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Acked-by: Marek Vasut <marex@denx.de>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
---
drivers/net/phy/atheros.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/drivers/net/phy/atheros.c b/drivers/net/phy/atheros.c
index e57c4120a3..694a338053 100644
--- a/drivers/net/phy/atheros.c
+++ b/drivers/net/phy/atheros.c
@@ -31,6 +31,22 @@ static int ar8035_config(struct phy_device *phydev)
regval = phy_read(phydev, MDIO_DEVAD_NONE, 0x1e);
phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, (regval|0x0100));
+ if ((phydev->interface == PHY_INTERFACE_MODE_RGMII_ID) ||
+ (phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID)) {
+ /* select debug reg 5 */
+ phy_write(phydev, MDIO_DEVAD_NONE, 0x1D, 0x5);
+ /* enable tx delay */
+ phy_write(phydev, MDIO_DEVAD_NONE, 0x1E, 0x0100);
+ }
+
+ if ((phydev->interface == PHY_INTERFACE_MODE_RGMII_ID) ||
+ (phydev->interface == PHY_INTERFACE_MODE_RGMII_RXID)) {
+ /* select debug reg 0 */
+ phy_write(phydev, MDIO_DEVAD_NONE, 0x1D, 0x0);
+ /* enable rx delay */
+ phy_write(phydev, MDIO_DEVAD_NONE, 0x1E, 0x8000);
+ }
+
phydev->supported = phydev->drv->features;
genphy_config_aneg(phydev);
--
2.39.5