netdev - [PATCH v2 4/5] net: phy: at803x: Disable phy delay for RGMII mode

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Date:   Tue,  8 Jan 2019 21:59:25 +0530
From:   Vinod Koul <vkoul@...nel.org>
To:     David S Miller <davem@...emloft.net>
Cc:     netdev@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        Niklas Cassel <niklas.cassel@...aro.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Vinod Koul <vkoul@...nel.org>, Andrew Lunn <andrew@...n.ch>,
        Florian Fainelli <f.fainelli@...il.com>
Subject: [PATCH v2 4/5] net: phy: at803x: Disable phy delay for RGMII mode

For RGMII mode, phy delay should be disabled. Add this case along
with disable delay routines.

Signed-off-by: Vinod Koul <vkoul@...nel.org>
---
 drivers/net/phy/at803x.c | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/drivers/net/phy/at803x.c b/drivers/net/phy/at803x.c
index f9432d053a22..e7cf1d5b0514 100644
--- a/drivers/net/phy/at803x.c
+++ b/drivers/net/phy/at803x.c
@@ -122,6 +122,18 @@ static inline int at803x_enable_tx_delay(struct phy_device *phydev)
 					AT803X_DEBUG_TX_CLK_DLY_EN);
 }
 
+static inline int at803x_disable_rx_delay(struct phy_device *phydev)
+{
+	return at803x_debug_reg_mask(phydev, AT803X_DEBUG_REG_0,
+				     AT803X_DEBUG_RX_CLK_DLY_EN, 0);
+}
+
+static inline int at803x_disable_tx_delay(struct phy_device *phydev)
+{
+	return at803x_debug_reg_mask(phydev, AT803X_DEBUG_REG_5,
+				     AT803X_DEBUG_TX_CLK_DLY_EN, 0);
+}
+
 /* save relevant PHY registers to private copy */
 static void at803x_context_save(struct phy_device *phydev,
 				struct at803x_context *context)
@@ -269,6 +281,15 @@ static int at803x_config_init(struct phy_device *phydev)
 			return ret;
 	}
 
+	if (phydev->interface == PHY_INTERFACE_MODE_RGMII) {
+		ret = at803x_disable_rx_delay(phydev);
+		if (ret < 0)
+			return ret;
+		ret = at803x_disable_tx_delay(phydev);
+		if (ret < 0)
+			return ret;
+	}
+
 	return 0;
 }
 
-- 
2.20.1