phy: adin: add readext and writeext support for mdio cmd
The adin phy has extended registers that can be accessed using
adin_ext_read and adin_ext_write. These registers can be read directly
using the mdio command using readext and writext. For example:
=> mdio rx ethernet@428a0000 0xff23
Reading from bus ethernet@428a0000
PHY at address 0:
65315 - 0xe01
Signed-off-by: Nate Drude <nate.d@variscite.com>
Reviewed-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
diff --git a/drivers/net/phy/adin.c b/drivers/net/phy/adin.c
index fb9f1e4..0970449 100644
--- a/drivers/net/phy/adin.c
+++ b/drivers/net/phy/adin.c
@@ -155,6 +155,18 @@
return phy_write(phydev, MDIO_DEVAD_NONE, ADIN1300_EXT_REG_DATA, val);
}
+static int adin_extread(struct phy_device *phydev, int addr, int devaddr,
+ int regnum)
+{
+ return adin_ext_read(phydev, regnum);
+}
+
+static int adin_extwrite(struct phy_device *phydev, int addr,
+ int devaddr, int regnum, u16 val)
+{
+ return adin_ext_write(phydev, regnum, val);
+}
+
static int adin_config_clk_out(struct phy_device *phydev)
{
ofnode node = phy_get_ofnode(phydev);
@@ -260,4 +272,6 @@
.config = adin1300_config,
.startup = genphy_startup,
.shutdown = genphy_shutdown,
+ .readext = adin_extread,
+ .writeext = adin_extwrite,
};