[U-Boot-Users] [PATCH] mpc83xx: UEC: add support for Broadcom BCM5481 Gigabit PHY

[Anton Vorontsov]

This patch adds basic support for Broadcom BCM5481 PHY,
with the quirk needed for at least MPC8360E-RDK.

Quirk comes from MPC8360E-RDK BSP source, I think author is
Peter Barada <peterb at logicpd.com>, but I'm not sure.

There are no openly available specifications for that PHY.

Signed-off-by: Anton Vorontsov <avorontsov at ru.mvista.com>
---
 drivers/qe/uec_phy.c |   77 ++++++++++++++++++++++++++++++++++++++++++++++++++
 drivers/qe/uec_phy.h |    5 +++
 2 files changed, 82 insertions(+), 0 deletions(-)

diff --git a/drivers/qe/uec_phy.c b/drivers/qe/uec_phy.c
index ca6faa6..6882d03 100644
--- a/drivers/qe/uec_phy.c
+++ b/drivers/qe/uec_phy.c
@@ -237,6 +237,44 @@ static int gbit_config_aneg (struct uec_mii_info *mii_info)
 	return 0;
 }
 
+static int gbit_read_status(struct uec_mii_info *mii_info)
+{
+	u16 status;
+	int err;
+
+	err = genmii_update_link(mii_info);
+	if (err)
+		return err;
+
+	if (mii_info->autoneg) {
+		mii_info->pause = 0;
+		status = phy_read(mii_info, MII_1000BASETSTATUS);
+		if (status & (LPA_1000FULL | LPA_1000HALF)) {
+			mii_info->speed = SPEED_1000;
+			if (status & LPA_1000FULL)
+				mii_info->duplex = DUPLEX_FULL;
+			else
+				mii_info->duplex = DUPLEX_HALF;
+		} else {
+			status = phy_read(mii_info, PHY_ANLPAR);
+
+			if (status & (PHY_ANLPAR_10FD | PHY_ANLPAR_TXFD))
+				mii_info->duplex = DUPLEX_FULL;
+			else
+				mii_info->duplex = DUPLEX_HALF;
+			if (status & (PHY_ANLPAR_TXFD | PHY_ANLPAR_TX))
+				mii_info->speed = SPEED_100;
+			else
+				mii_info->speed = SPEED_10;
+		}
+	}
+	/*
+	 * On non-aneg, we assume what we put in BMCR is the speed,
+	 * though magic-aneg shouldn't prevent this case from occurring.
+	 */
+	 return 0;
+}
+
 static int marvell_config_aneg (struct uec_mii_info *mii_info)
 {
 	/* The Marvell PHY has an errata which requires
@@ -319,6 +357,35 @@ static int genmii_read_status (struct uec_mii_info *mii_info)
 	return 0;
 }
 
+static int bcm_init(struct uec_mii_info *mii_info)
+{
+	gbit_config_aneg(mii_info);
+
+#ifdef CONFIG_MPC8360ERDK
+	{
+		u16 val;
+		int cnt = 50;
+
+		/* Wait for aneg to complete. */
+		do
+			val = phy_read(mii_info, PHY_BMSR);
+		while (--cnt && !(val & PHY_BMSR_AUTN_COMP));
+
+		/* Set RDX clk delay. */
+		phy_write(mii_info, 0x18, 0x7 | (7 << 12));
+
+		val = phy_read(mii_info, 0x18);
+		/* Set RDX-RXC skew. */
+		val |= (1<<8);
+		val |= (7 | (7 << 12));
+		/* Write bits 14:0. */
+		val |= (1<<15);
+		phy_write(mii_info, 0x18, val);
+	}
+#endif
+	 return 0;
+}
+
 static int marvell_read_status (struct uec_mii_info *mii_info)
 {
 	u16 status;
@@ -491,6 +558,15 @@ static struct phy_info phy_info_marvell = {
 	.config_intr = &marvell_config_intr,
 };
 
+static struct phy_info phy_info_bcm5481 = {
+	.phy_id = 0x0143bca0,
+	.phy_id_mask = 0xffffff0,
+	.name = "Broadcom 5481",
+	.features = MII_GBIT_FEATURES,
+	.read_status = gbit_read_status,
+	.init = bcm_init,
+};
+
 static struct phy_info phy_info_genmii = {
 	.phy_id = 0x00000000,
 	.phy_id_mask = 0x00000000,
@@ -504,6 +580,7 @@ static struct phy_info *phy_info[] = {
 	&phy_info_dm9161,
 	&phy_info_dm9161a,
 	&phy_info_marvell,
+	&phy_info_bcm5481,
 	&phy_info_genmii,
 	NULL
 };
diff --git a/drivers/qe/uec_phy.h b/drivers/qe/uec_phy.h
index e59a940..6f769fb 100644
--- a/drivers/qe/uec_phy.h
+++ b/drivers/qe/uec_phy.h
@@ -29,6 +29,11 @@
 #define MII_1000BASETCONTROL_FULLDUPLEXCAP    0x0200
 #define MII_1000BASETCONTROL_HALFDUPLEXCAP    0x0100
 
+/* 1000BT status */
+#define MII_1000BASETSTATUS	0x0a
+#define LPA_1000FULL		0x0400
+#define LPA_1000HALF		0x0200
+
 /* Cicada Extended Control Register 1 */
 #define MII_CIS8201_EXT_CON1	    0x17
 #define MII_CIS8201_EXTCON1_INIT    0x0000
-- 
1.5.2.2