[PATCH] net: dsa: mt7530: increase reset hold time

Justin Swartz
2024-03-12T19:22:42Z

Increase the MT7530 reset hold period from 1000-1100 usec
to 5000-5100 usec.

This should reduce the likelihood of an incorrect external
crystal frequency selection which may occur when reset is
deasserted too early under certain link conditions.

Signed-off-by: Justin Swartz <justin.swartz@risingedge.co.za>
---
drivers/net/dsa/mt7530.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/dsa/mt7530.c b/drivers/net/dsa/mt7530.c
index 3c1f65759..5e9e1381a 100644
--- a/drivers/net/dsa/mt7530.c
+++ b/drivers/net/dsa/mt7530.c
@@ -2243,11 +2243,11 @@ mt7530_setup(struct dsa_switch *ds)
*/
if (priv->mcm) {
reset_control_assert(priv->rstc);
- usleep_range(1000, 1100);
+ usleep_range(5000, 5100);
reset_control_deassert(priv->rstc);
} else {
gpiod_set_value_cansleep(priv->reset, 0);
- usleep_range(1000, 1100);
+ usleep_range(5000, 5100);
gpiod_set_value_cansleep(priv->reset, 1);
}

--