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| author | Carlo Caione <ccaione@baylibre.com> | 2019-01-16 11:34:50 +0000 |
|---|---|---|
| committer | Joe Hershberger <joe.hershberger@ni.com> | 2019-01-24 11:35:29 -0600 |
| commit | e57c9fdb042741e4049661074c25e7b7ff8a68cc (patch) | |
| tree | fc03aa1871597d175229e1aa37ebf79a1f16ed78 | |
| parent | 9043c4e0fc130aba5a1f4161885c9d97b5d8a73f (diff) | |
| download | u-boot-e57c9fdb042741e4049661074c25e7b7ff8a68cc.zip u-boot-e57c9fdb042741e4049661074c25e7b7ff8a68cc.tar.gz u-boot-e57c9fdb042741e4049661074c25e7b7ff8a68cc.tar.bz2 | |
net: phy: realtek: Add functions to read PHY's extended registers
According to the datasheet to access the extended registers we have to:
1. Write Register 31 Data = 0x0XYZ (Page 0xXYZ)
2. Read/Write the target Register Data
3. Write Register 31 Data = 0x0000 or 0xa42 (switch back to IEEE
Standard Registers)
Hook the missing functions so that we can use the `mdio rx/wx` command to
easily access the extended registers.
Signed-off-by: Carlo Caione <ccaione@baylibre.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
| -rw-r--r-- | drivers/net/phy/realtek.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/drivers/net/phy/realtek.c b/drivers/net/phy/realtek.c index b3e6578..dd45e11 100644 --- a/drivers/net/phy/realtek.c +++ b/drivers/net/phy/realtek.c @@ -57,6 +57,33 @@ #define MIIM_RTL8211F_TX_DELAY 0x100 #define MIIM_RTL8211F_LCR 0x10 +static int rtl8211f_phy_extread(struct phy_device *phydev, int addr, + int devaddr, int regnum) +{ + int oldpage = phy_read(phydev, MDIO_DEVAD_NONE, + MIIM_RTL8211F_PAGE_SELECT); + int val; + + phy_write(phydev, MDIO_DEVAD_NONE, MIIM_RTL8211F_PAGE_SELECT, devaddr); + val = phy_read(phydev, MDIO_DEVAD_NONE, regnum); + phy_write(phydev, MDIO_DEVAD_NONE, MIIM_RTL8211F_PAGE_SELECT, oldpage); + + return val; +} + +static int rtl8211f_phy_extwrite(struct phy_device *phydev, int addr, + int devaddr, int regnum, u16 val) +{ + int oldpage = phy_read(phydev, MDIO_DEVAD_NONE, + MIIM_RTL8211F_PAGE_SELECT); + + phy_write(phydev, MDIO_DEVAD_NONE, MIIM_RTL8211F_PAGE_SELECT, devaddr); + phy_write(phydev, MDIO_DEVAD_NONE, regnum, val); + phy_write(phydev, MDIO_DEVAD_NONE, MIIM_RTL8211F_PAGE_SELECT, oldpage); + + return 0; +} + static int rtl8211b_probe(struct phy_device *phydev) { #ifdef CONFIG_RTL8211X_PHY_FORCE_MASTER @@ -336,6 +363,8 @@ static struct phy_driver RTL8211F_driver = { .config = &rtl8211f_config, .startup = &rtl8211f_startup, .shutdown = &genphy_shutdown, + .readext = &rtl8211f_phy_extread, + .writeext = &rtl8211f_phy_extwrite, }; int phy_realtek_init(void) |