[PATCH] net: dsa: mt7530: increase reset hold time
flat view
STALE943d
From: Justin Swartz <hidden>
Date: 2024-03-12 19:22:42
Also in:
linux-arm-kernel, linux-mediatek, lkml
Subsystem:
mediatek switch driver, networking drivers, networking [dsa], the rest · Maintainers:
Chester A. Unal, Daniel Golle, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Andrew Lunn, Vladimir Oltean, Linus Torvalds
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 <redacted> --- 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); }
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