From: Justin Swartz <justin.swartz@risingedge.co.za> To: "Arınç ÜNAL" <arinc.unal@arinc9.com>, "Daniel Golle" <daniel@makrotopia.org>, "DENG Qingfang" <dqfext@gmail.com>, "Sean Wang" <sean.wang@mediatek.com>, "Andrew Lunn" <andrew@lunn.ch>, "Florian Fainelli" <f.fainelli@gmail.com>, "Vladimir Oltean" <olteanv@gmail.com>, "David S. Miller" <davem@davemloft.net>, "Eric Dumazet" <edumazet@google.com>, "Jakub Kicinski" <kuba@kernel.org>, "Paolo Abeni" <pabeni@redhat.com>, "Matthias Brugger" <matthias.bgg@gmail.com>, "AngeloGioacchino Del Regno" <angelogioacchino.delregno@collabora.com> Cc: Justin Swartz <justin.swartz@risingedge.co.za>, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org Subject: [PATCH] net: dsa: mt7530: increase reset hold time Date: Tue, 12 Mar 2024 21:21:16 +0200 [thread overview] Message-ID: <20240312192117.7789-1-justin.swartz@risingedge.co.za> (raw) In-Reply-To: <f594a72a91d12f1d027a06962caa9750@risingedge.co.za> 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); } --
WARNING: multiple messages have this Message-ID (diff)
From: Justin Swartz <justin.swartz@risingedge.co.za> To: "Arınç ÜNAL" <arinc.unal@arinc9.com>, "Daniel Golle" <daniel@makrotopia.org>, "DENG Qingfang" <dqfext@gmail.com>, "Sean Wang" <sean.wang@mediatek.com>, "Andrew Lunn" <andrew@lunn.ch>, "Florian Fainelli" <f.fainelli@gmail.com>, "Vladimir Oltean" <olteanv@gmail.com>, "David S. Miller" <davem@davemloft.net>, "Eric Dumazet" <edumazet@google.com>, "Jakub Kicinski" <kuba@kernel.org>, "Paolo Abeni" <pabeni@redhat.com>, "Matthias Brugger" <matthias.bgg@gmail.com>, "AngeloGioacchino Del Regno" <angelogioacchino.delregno@collabora.com> Cc: Justin Swartz <justin.swartz@risingedge.co.za>, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org Subject: [PATCH] net: dsa: mt7530: increase reset hold time Date: Tue, 12 Mar 2024 21:21:16 +0200 [thread overview] Message-ID: <20240312192117.7789-1-justin.swartz@risingedge.co.za> (raw) In-Reply-To: <f594a72a91d12f1d027a06962caa9750@risingedge.co.za> 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); } -- _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2024-03-12 19:22 UTC|newest] Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top 2024-03-05 4:39 [PATCH] net: dsa: mt7530: disable LEDs before reset Justin Swartz 2024-03-05 4:39 ` Justin Swartz 2024-03-08 9:51 ` Arınç ÜNAL 2024-03-08 14:46 ` Daniel Golle 2024-03-08 14:46 ` Daniel Golle 2024-03-12 0:07 ` Justin Swartz 2024-03-12 0:07 ` Justin Swartz 2024-03-12 1:03 ` Andrew Lunn 2024-03-12 1:03 ` Andrew Lunn 2024-03-12 2:41 ` Arınç ÜNAL 2024-03-12 12:01 ` Justin Swartz 2024-03-12 12:01 ` Justin Swartz 2024-03-12 14:06 ` Arınç ÜNAL 2024-03-12 15:25 ` Justin Swartz 2024-03-12 15:25 ` Justin Swartz 2024-03-12 16:35 ` Justin Swartz 2024-03-12 16:35 ` Justin Swartz 2024-03-12 19:21 ` Justin Swartz [this message] 2024-03-12 19:21 ` [PATCH] net: dsa: mt7530: increase reset hold time Justin Swartz 2024-03-13 8:59 ` Arınç ÜNAL 2024-03-13 11:52 ` Justin Swartz 2024-03-13 11:52 ` Justin Swartz 2024-03-13 12:06 ` Arınç ÜNAL 2024-03-13 13:13 ` Justin Swartz 2024-03-13 13:13 ` Justin Swartz 2024-03-13 15:04 ` Arınç ÜNAL 2024-03-13 15:38 ` Justin Swartz 2024-03-13 15:38 ` Justin Swartz 2024-03-13 15:51 ` Arınç ÜNAL 2024-03-11 21:10 ` [PATCH] net: dsa: mt7530: disable LEDs before reset patchwork-bot+netdevbpf 2024-03-11 21:10 ` patchwork-bot+netdevbpf 2024-03-11 21:22 ` Arınç ÜNAL 2024-03-11 21:58 ` Jakub Kicinski 2024-03-11 21:58 ` Jakub Kicinski 2024-03-11 21:58 ` Daniel Golle 2024-03-11 21:58 ` Daniel Golle 2024-03-11 23:27 ` Arınç ÜNAL 2024-03-11 23:43 ` Daniel Golle 2024-03-11 23:43 ` Daniel Golle 2024-03-12 3:17 ` Arınç ÜNAL 2024-03-12 8:38 ` Arınç ÜNAL 2024-03-12 10:46 ` Paolo Abeni 2024-03-12 10:46 ` Paolo Abeni 2024-03-12 11:21 ` Arınç ÜNAL
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