[U-Boot] [PATCH] net: phy: marvell: Add functions to read PHY's extended registers
Lukasz Majewski
lukma at denx.de
Fri Sep 29 14:47:36 UTC 2017
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 at 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
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