From aa474698f75f4790a4de2052dd487736d2361b2e Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Ar=C4=B1n=C3=A7=20=C3=9CNAL?= Date: Fri, 1 Mar 2024 12:43:04 +0200 Subject: [PATCH 26/30] net: dsa: mt7530: sort link settings ops and force link down on all ports MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit port_enable and port_disable clears the link settings. Move that to mt7530_setup() and mt7531_setup_common() which set up the switches. This way, the link settings are cleared on all ports at setup, and then only once with phylink_mac_link_down() when a link goes down. Enable force mode at setup to apply the force part of the link settings. This ensures that disabled ports will have their link down. Suggested-by: Vladimir Oltean Signed-off-by: Arınç ÜNAL Signed-off-by: Paolo Abeni --- drivers/net/dsa/mt7530.c | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-) --- a/drivers/net/dsa/mt7530.c +++ b/drivers/net/dsa/mt7530.c @@ -1215,7 +1215,6 @@ mt7530_port_enable(struct dsa_switch *ds priv->ports[port].enable = true; mt7530_rmw(priv, MT7530_PCR_P(port), PCR_MATRIX_MASK, priv->ports[port].pm); - mt7530_clear(priv, MT7530_PMCR_P(port), PMCR_LINK_SETTINGS_MASK); mutex_unlock(&priv->reg_mutex); @@ -1235,7 +1234,6 @@ mt7530_port_disable(struct dsa_switch *d priv->ports[port].enable = false; mt7530_rmw(priv, MT7530_PCR_P(port), PCR_MATRIX_MASK, PCR_MATRIX_CLR); - mt7530_clear(priv, MT7530_PMCR_P(port), PMCR_LINK_SETTINGS_MASK); mutex_unlock(&priv->reg_mutex); } @@ -2457,6 +2455,12 @@ mt7530_setup(struct dsa_switch *ds) mt7530_mib_reset(ds); for (i = 0; i < MT7530_NUM_PORTS; i++) { + /* Clear link settings and enable force mode to force link down + * on all ports until they're enabled later. + */ + mt7530_rmw(priv, MT7530_PMCR_P(i), PMCR_LINK_SETTINGS_MASK | + PMCR_FORCE_MODE, PMCR_FORCE_MODE); + /* Disable forwarding by default on all ports */ mt7530_rmw(priv, MT7530_PCR_P(i), PCR_MATRIX_MASK, PCR_MATRIX_CLR); @@ -2562,6 +2566,12 @@ mt7531_setup_common(struct dsa_switch *d UNU_FFP_MASK); for (i = 0; i < MT7530_NUM_PORTS; i++) { + /* Clear link settings and enable force mode to force link down + * on all ports until they're enabled later. + */ + mt7530_rmw(priv, MT7530_PMCR_P(i), PMCR_LINK_SETTINGS_MASK | + MT7531_FORCE_MODE, MT7531_FORCE_MODE); + /* Disable forwarding by default on all ports */ mt7530_rmw(priv, MT7530_PCR_P(i), PCR_MATRIX_MASK, PCR_MATRIX_CLR);