On some boards MDIO may get stuck if it detects echo on the line. This is
a know hardware issue, there is a board fix for it. In case we're running
on a board that doesn't have the fix, we don't want to loop here forever
and freeze U-Boot.
Signed-off-by: Alex Marginean <alexandru.margin...@nxp.com>
---
drivers/net/fsl_enetc_mdio.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/net/fsl_enetc_mdio.c b/drivers/net/fsl_enetc_mdio.c
index b4463a58a5..47257a6cf6 100644
--- a/drivers/net/fsl_enetc_mdio.c
+++ b/drivers/net/fsl_enetc_mdio.c
@@ -17,8 +17,13 @@
static void enetc_mdio_wait_bsy(struct enetc_mdio_priv *priv)
{
- while (enetc_read(priv, ENETC_MDIO_CFG) & ENETC_EMDIO_CFG_BSY)
+ int to = 10000;
+
+ while ((enetc_read(priv, ENETC_MDIO_CFG) & ENETC_EMDIO_CFG_BSY) &&
+ --to)
cpu_relax();
+ if (!to)
+ printf("T");
}
int enetc_mdio_read_priv(struct enetc_mdio_priv *priv, int addr, int devad,
--
2.17.1
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