From: Alexander Sverdlin <alexander.sverd...@siemens.com>
am65_cpsw_ofdata_parse_phy() tries to handle the case when PHY is not
specified in DT gracefully:
am65_cpsw_nuss_port ethernet@8000000port@1: can't parse phy-handle port 1 (-2)
am65_cpsw_mdio_init() in turn is prepared for this, checks
if priv->has_phy == 0 and bails out (leaving cpsw_common->bus == NULL).
am65_cpsw_phy_init() however is not prepared for this and calls
phy_connect(cpsw_common->bus, ...) unconditionally, which leads to:
"Synchronous Abort" handler, esr 0x8600000d, far 0x0
elr: ffffffff808ab000 lr : 000000008083bde4 (reloc)
where lr points to the instruction right after bus->read() in get_phy_id().
Fixes: 9d0dca1199d1 ("net: ethernet: ti: Introduce am654 gigabit eth switch
subsystem driver")
Signed-off-by: Alexander Sverdlin <alexander.sverd...@siemens.com>
---
v2: rewritten subject; "is turn" -> "in turn" further down in message body
drivers/net/ti/am65-cpsw-nuss.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/net/ti/am65-cpsw-nuss.c b/drivers/net/ti/am65-cpsw-nuss.c
index 6da018c0f9d5..d1e452b6b43c 100644
--- a/drivers/net/ti/am65-cpsw-nuss.c
+++ b/drivers/net/ti/am65-cpsw-nuss.c
@@ -722,6 +722,9 @@ static int am65_cpsw_phy_init(struct udevice *dev)
u32 supported = PHY_GBIT_FEATURES;
int ret;
+ if (!priv->has_phy || !cpsw_common->bus)
+ return 0;
+
phydev = phy_connect(cpsw_common->bus,
priv->phy_addr,
priv->dev,
--
2.44.0
