[PATCH] phy: micrel: Add definitions for common Micrel PHY registers

[dinguyen at altera.com]

From: Dinh Nguyen <dinguyen at altera.com>

Add defines for common Micrel PHY setups so that other platforms
can use them. Update imx61 and sama5 hardware to use the micrel_phy.h
PHY defines.

Also add support for the KSZ9021RLRN PHY.

Signed-off-by: Dinh Nguyen <dinguyen at altera.com>
Acked-by: Shawn Guo <shawn.guo at linaro.org>
Acked-by: Nicolas Ferre <nicolas.ferre at atmel.com>
Cc: David S. Miller <davem at davemloft.net>
CC: Andrew Victor <linux at maxim.org.za>
CC: Jean-Christophe Plagniol-Villard <plagnioj at jcrosoft.com>
Cc: Shawn Guo <shawn.guo at linaro.org>
Cc: Nicolas Ferre <nicolas.ferre at atmel.com>
Cc: netdev at vger.kernel.org
Cc: linux-arm-kernel at lists.infradead.org
---
 arch/arm/mach-at91/board-dt-sama5.c |   17 ++++++-----------
 arch/arm/mach-imx/mach-imx6q.c      |   13 ++++++++-----
 include/linux/micrel_phy.h          |    6 ++++++
 3 files changed, 20 insertions(+), 16 deletions(-)

diff --git a/arch/arm/mach-at91/board-dt-sama5.c b/arch/arm/mach-at91/board-dt-sama5.c
index ad95f6a..bf00d15 100644
--- a/arch/arm/mach-at91/board-dt-sama5.c
+++ b/arch/arm/mach-at91/board-dt-sama5.c
@@ -42,20 +42,15 @@ static int ksz9021rn_phy_fixup(struct phy_device *phy)
 {
 	int value;
 
-#define GMII_RCCPSR	260
-#define GMII_RRDPSR	261
-#define GMII_ERCR	11
-#define GMII_ERDWR	12
-
 	/* Set delay values */
-	value = GMII_RCCPSR | 0x8000;
-	phy_write(phy, GMII_ERCR, value);
+	value = MICREL_KSZ9021_RGMII_CLK_CTRL_PAD_SCEW | 0x8000;
+	phy_write(phy, MICREL_KSZ9021_EXTREG_CTRL, value);
 	value = 0xF2F4;
-	phy_write(phy, GMII_ERDWR, value);
-	value = GMII_RRDPSR | 0x8000;
-	phy_write(phy, GMII_ERCR, value);
+	phy_write(phy, MICREL_KSZ9021_EXTREG_DATA_WRITE, value);
+	value = MICREL_KSZ9021_RGMII_RX_DATA_PAD_SCEW | 0x8000;
+	phy_write(phy, MICREL_KSZ9021_EXTREG_CTRL, value);
 	value = 0x2222;
-	phy_write(phy, GMII_ERDWR, value);
+	phy_write(phy, MICREL_KSZ9021_EXTREG_DATA_WRITE, value);
 
 	return 0;
 }
diff --git a/arch/arm/mach-imx/mach-imx6q.c b/arch/arm/mach-imx/mach-imx6q.c
index 7be13f8..c8d7814 100644
--- a/arch/arm/mach-imx/mach-imx6q.c
+++ b/arch/arm/mach-imx/mach-imx6q.c
@@ -103,13 +103,16 @@ static int ksz9021rn_phy_fixup(struct phy_device *phydev)
 {
 	if (IS_BUILTIN(CONFIG_PHYLIB)) {
 		/* min rx data delay */
-		phy_write(phydev, 0x0b, 0x8105);
-		phy_write(phydev, 0x0c, 0x0000);
+		phy_write(phydev, MICREL_KSZ9021_EXTREG_CTRL,
+			0x8000 | MICREL_KSZ9021_RGMII_RX_DATA_PAD_SCEW);
+		phy_write(phydev, MICREL_KSZ9021_EXTREG_DATA_WRITE, 0x0000);
 
 		/* max rx/tx clock delay, min rx/tx control delay */
-		phy_write(phydev, 0x0b, 0x8104);
-		phy_write(phydev, 0x0c, 0xf0f0);
-		phy_write(phydev, 0x0b, 0x104);
+		phy_write(phydev, MICREL_KSZ9021_EXTREG_CTRL,
+			0x8000 | MICREL_KSZ9021_RGMII_CLK_CTRL_PAD_SCEW);
+		phy_write(phydev, MICREL_KSZ9021_EXTREG_DATA_WRITE, 0xf0f0);
+		phy_write(phydev, MICREL_KSZ9021_EXTREG_CTRL,
+			MICREL_KSZ9021_RGMII_CLK_CTRL_PAD_SCEW);
 	}
 
 	return 0;
diff --git a/include/linux/micrel_phy.h b/include/linux/micrel_phy.h
index 8752dbb..ad05ce6 100644
--- a/include/linux/micrel_phy.h
+++ b/include/linux/micrel_phy.h
@@ -17,6 +17,7 @@
 
 #define PHY_ID_KSZ8873MLL	0x000e7237
 #define PHY_ID_KSZ9021		0x00221610
+#define PHY_ID_KSZ9021RLRN	0x00221611
 #define PHY_ID_KS8737		0x00221720
 #define PHY_ID_KSZ8021		0x00221555
 #define PHY_ID_KSZ8031		0x00221556
@@ -35,4 +36,9 @@
 /* struct phy_device dev_flags definitions */
 #define MICREL_PHY_50MHZ_CLK	0x00000001
 
+#define MICREL_KSZ9021_EXTREG_CTRL	0xB
+#define MICREL_KSZ9021_EXTREG_DATA_WRITE	0xC
+#define MICREL_KSZ9021_RGMII_CLK_CTRL_PAD_SCEW	0x104
+#define MICREL_KSZ9021_RGMII_RX_DATA_PAD_SCEW	0x105
+
 #endif /* _MICREL_PHY_H */
-- 
1.7.9.5