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* [U-Boot] [PATCH] net: phy: marvell: Add functions to read PHY's extended registers
@ 2017-09-29 14:47 Lukasz Majewski
  2017-10-26 14:18 ` Lukasz Majewski
  2017-10-26 15:05 ` York Sun
  0 siblings, 2 replies; 7+ messages in thread
From: Lukasz Majewski @ 2017-09-29 14:47 UTC (permalink / raw)
  To: u-boot

This commit allows extended Marvell registers to be read with:

foo > mdio rx FEC 3.10
Reading from bus FEC
PHY at address 0:
3.16 - 0x1063
foo > mdio wx FEC 3.10 0x1011

The above code changes the way ETH connector LEDs blink.

Signed-off-by: Lukasz Majewski <lukma@denx.de>
---
 drivers/net/phy/marvell.c | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/drivers/net/phy/marvell.c b/drivers/net/phy/marvell.c
index b7f300e..a167c34 100644
--- a/drivers/net/phy/marvell.c
+++ b/drivers/net/phy/marvell.c
@@ -104,6 +104,31 @@
 #define MIIM_88E151x_MODE_SGMII		1
 #define MIIM_88E151x_RESET_OFFS		15
 
+static int m88e1xxx_phy_extread(struct phy_device *phydev, int addr,
+				int devaddr, int regnum)
+{
+	int oldpage = phy_read(phydev, MDIO_DEVAD_NONE, MII_MARVELL_PHY_PAGE);
+	int val;
+
+	phy_write(phydev, MDIO_DEVAD_NONE, MII_MARVELL_PHY_PAGE, devaddr);
+	val = phy_read(phydev, MDIO_DEVAD_NONE, regnum);
+	phy_write(phydev, MDIO_DEVAD_NONE, MII_MARVELL_PHY_PAGE, oldpage);
+
+	return val;
+}
+
+static int m88e1xxx_phy_extwrite(struct phy_device *phydev, int addr,
+				 int devaddr, int regnum, u16 val)
+{
+	int oldpage = phy_read(phydev, MDIO_DEVAD_NONE, MII_MARVELL_PHY_PAGE);
+
+	phy_write(phydev, MDIO_DEVAD_NONE, MII_MARVELL_PHY_PAGE, devaddr);
+	phy_write(phydev, MDIO_DEVAD_NONE, regnum, val);
+	phy_write(phydev, MDIO_DEVAD_NONE, MII_MARVELL_PHY_PAGE, oldpage);
+
+	return 0;
+}
+
 /* Marvell 88E1011S */
 static int m88e1011s_config(struct phy_device *phydev)
 {
@@ -669,6 +694,8 @@ static struct phy_driver M88E1510_driver = {
 	.config = &m88e1510_config,
 	.startup = &m88e1011s_startup,
 	.shutdown = &genphy_shutdown,
+	.readext = &m88e1xxx_phy_extread,
+	.writeext = &m88e1xxx_phy_extwrite,
 };
 
 /*
-- 
2.1.4

^ permalink raw reply related	[flat|nested] 7+ messages in thread

end of thread, other threads:[~2017-10-26 21:02 UTC | newest]

Thread overview: 7+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2017-09-29 14:47 [U-Boot] [PATCH] net: phy: marvell: Add functions to read PHY's extended registers Lukasz Majewski
2017-10-26 14:18 ` Lukasz Majewski
2017-10-26 15:05 ` York Sun
2017-10-26 15:15   ` Lukasz Majewski
2017-10-26 15:15     ` Lukasz Majewski
2017-10-26 15:45       ` York Sun
2017-10-26 21:02         ` Lukasz Majewski

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