Merge branch 'berlin_ethernet'

Sebastian Hesselbarth says:

====================
Marvell PXA168 libphy handling and Berlin Ethernet

This patch series deals with a removing a IP feature that can be found
on all currently supported Marvell Ethernet IP (pxa168_eth, mv643xx_eth,
mvneta). The MAC IP allows to automatically perform PHY auto-negotiation
without software interaction.

However, this feature (a) fundamentally clashes with the way libphy works
and (b) is unable to deal with quirky PHYs that require special treatment.
In this series, pxa168_eth driver is rewritten to completely disable that
feature and properly deal with libphy provided PHYs.

As usual, a branch on top of v3.18-rc1 can be found at

git://git.infradead.org/users/hesselba/linux-berlin.git devel/bg2-bg2cd-eth-v2

Patches 1-5 should go through David's net tree, I'll pick up the DT patches
6-9.

There have been some changes,
compared to the RFT
- added phy-connection-type property to BG2Q PHY DT node
- bail out from pxa168_eth_adjust_link when there is no change in
  PHY parameters. Also, add a call to phy_print_status.
compared to v1
- move phy-connection-type to ethernet node instead of PHY node

Patch 1 adds support for Marvell 88E3016 FastEthernet PHY that is also
integrated in Marvell Berlin BG2/BG2CD SoCs.

Patch 2 allows to pass phy_interface_t on pxa168_eth platform_data that
is only used by mach-mmp/gplug. From the board setup, I guessed gplug's
PHY is connected via RMII. The patch still isn't even compile tested.

Patches 3-5 prepare proper libphy handling and finally remove all in-driver
PHY mangling related to the feature explained above.

Patches 6-9 add corresponding ethernet DT nodes to BG2, BG2CD, add a
phy-connection-type property to BG2Q and enable ethernet on BG2-based Sony
NSZ-GS7. I have tested all this on GS7 successfully with ip=dhcp on 100M FD.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

arch/arm/mach-mmp/gplugd.c

@@ -12,6 +12,7 @@
 #include <linux/platform_device.h>
 #include <linux/gpio.h>
 #include <linux/gpio-pxa.h>
+#include <linux/phy.h>
 
 #include <asm/mach/arch.h>
 #include <asm/mach-types.h>
@@ -158,6 +159,7 @@ struct pxa168_eth_platform_data gplugd_eth_platform_data = {
 	.port_number = 0,
 	.phy_addr    = 0,
 	.speed       = 0, /* Autonagotiation */
+	.intf        = PHY_INTERFACE_MODE_RMII,
 	.init        = gplugd_eth_init,
 };
 

drivers/net/phy/marvell.c

@@ -118,6 +118,9 @@
 
 #define MII_M1116R_CONTROL_REG_MAC	21
 
+#define MII_88E3016_PHY_SPEC_CTRL	0x10
+#define MII_88E3016_DISABLE_SCRAMBLER	0x0200
+#define MII_88E3016_AUTO_MDIX_CROSSOVER	0x0030
 
 MODULE_DESCRIPTION("Marvell PHY driver");
 MODULE_AUTHOR("Andy Fleming");
@@ -434,6 +437,25 @@ static int m88e1116r_config_init(struct phy_device *phydev)
 	return 0;
 }
 
+static int m88e3016_config_init(struct phy_device *phydev)
+{
+	int reg;
+
+	/* Enable Scrambler and Auto-Crossover */
+	reg = phy_read(phydev, MII_88E3016_PHY_SPEC_CTRL);
+	if (reg < 0)
+		return reg;
+
+	reg &= ~MII_88E3016_DISABLE_SCRAMBLER;
+	reg |= MII_88E3016_AUTO_MDIX_CROSSOVER;
+
+	reg = phy_write(phydev, MII_88E3016_PHY_SPEC_CTRL, reg);
+	if (reg < 0)
+		return reg;
+
+	return 0;
+}
+
 static int m88e1111_config_init(struct phy_device *phydev)
 {
 	int err;
@@ -770,6 +792,12 @@ static int marvell_read_status(struct phy_device *phydev)
 	return 0;
 }
 
+static int marvell_aneg_done(struct phy_device *phydev)
+{
+	int retval = phy_read(phydev, MII_M1011_PHY_STATUS);
+	return (retval < 0) ? retval : (retval & MII_M1011_PHY_STATUS_RESOLVED);
+}
+
 static int m88e1121_did_interrupt(struct phy_device *phydev)
 {
 	int imask;
@@ -1050,6 +1078,23 @@ static struct phy_driver marvell_drivers[] = {
 		.suspend = &genphy_suspend,
 		.driver = { .owner = THIS_MODULE },
 	},
+	{
+		.phy_id = MARVELL_PHY_ID_88E3016,
+		.phy_id_mask = MARVELL_PHY_ID_MASK,
+		.name = "Marvell 88E3016",
+		.features = PHY_BASIC_FEATURES,
+		.flags = PHY_HAS_INTERRUPT,
+		.config_aneg = &genphy_config_aneg,
+		.config_init = &m88e3016_config_init,
+		.aneg_done = &marvell_aneg_done,
+		.read_status = &marvell_read_status,
+		.ack_interrupt = &marvell_ack_interrupt,
+		.config_intr = &marvell_config_intr,
+		.did_interrupt = &m88e1121_did_interrupt,
+		.resume = &genphy_resume,
+		.suspend = &genphy_suspend,
+		.driver = { .owner = THIS_MODULE },
+	},
 };
 
 static int __init marvell_init(void)
@@ -1079,6 +1124,7 @@ static struct mdio_device_id __maybe_unused marvell_tbl[] = {
 	{ MARVELL_PHY_ID_88E1318S, MARVELL_PHY_ID_MASK },
 	{ MARVELL_PHY_ID_88E1116R, MARVELL_PHY_ID_MASK },
 	{ MARVELL_PHY_ID_88E1510, MARVELL_PHY_ID_MASK },
+	{ MARVELL_PHY_ID_88E3016, MARVELL_PHY_ID_MASK },
 	{ }
 };
 

include/linux/marvell_phy.h

@@ -16,6 +16,7 @@
 #define MARVELL_PHY_ID_88E1318S		0x01410e90
 #define MARVELL_PHY_ID_88E1116R		0x01410e40
 #define MARVELL_PHY_ID_88E1510		0x01410dd0
+#define MARVELL_PHY_ID_88E3016		0x01410e60
 
 /* struct phy_device dev_flags definitions */
 #define MARVELL_PHY_M1145_FLAGS_RESISTANCE	0x00000001

include/linux/pxa168_eth.h

@@ -13,6 +13,7 @@ struct pxa168_eth_platform_data {
 	 */
 	int	speed;		/* 0, SPEED_10, SPEED_100 */
 	int	duplex;		/* DUPLEX_HALF or DUPLEX_FULL */
+	phy_interface_t intf;
 
 	/*
 	 * Override default RX/TX queue sizes if nonzero.