The ADIN1200/ADIN1300 supports inverting the link status output signal
on the LINK_ST pin.
Add support for selecting this feature via device-tree properties.
Signed-off-by: Atsushi Nemoto <atsushi.nemoto@xxxxxxxxxx>
---
drivers/net/phy/adin.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/drivers/net/phy/adin.c b/drivers/net/phy/adin.c
index 134637584a83..331f9574328f 100644
--- a/drivers/net/phy/adin.c
+++ b/drivers/net/phy/adin.c
@@ -140,6 +140,9 @@
#define ADIN1300_RMII_20_BITS 0x0004
#define ADIN1300_RMII_24_BITS 0x0005
+#define ADIN1300_GE_LNK_STAT_INV_REG 0xff3c
+#define ADIN1300_GE_LNK_STAT_INV_EN BIT(0)
+
/**
* struct adin_cfg_reg_map - map a config value to aregister value
* @cfg: value in device configuration
@@ -495,6 +498,15 @@ static int adin_config_init(struct phy_device *phydev)
if (rc < 0)
return rc;
+ if (device_property_read_bool(&phydev->mdio.dev,
+ "adi,link-stat-inv")) {
+ rc = phy_set_bits_mmd(phydev, MDIO_MMD_VEND1,
+ ADIN1300_GE_LNK_STAT_INV_REG,
+ ADIN1300_GE_LNK_STAT_INV_EN);
+ if (rc < 0)
+ return rc;
+ }
+
phydev_dbg(phydev, "PHY is using mode '%s'\n",
phy_modes(phydev->interface));
--
2.30.2
