From: Alexander Couzens lynxis@fe80.eu
commit 42bc4fafe359ed6b73602b7a2dba0dd99588f8ce upstream.
Move the PLL init of the switch out of the pad configuration of the port 6 (usally cpu port).
Fix a unidirectional 100 mbit limitation on 1 gbit or 2.5 gbit links for outbound traffic on port 5 or port 6.
Fixes: c288575f7810 ("net: dsa: mt7530: Add the support of MT7531 switch") Cc: stable@vger.kernel.org Signed-off-by: Alexander Couzens lynxis@fe80.eu Signed-off-by: Jakub Kicinski kuba@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/dsa/mt7530.c | 15 +++++++++------ 1 file changed, 9 insertions(+), 6 deletions(-)
--- a/drivers/net/dsa/mt7530.c +++ b/drivers/net/dsa/mt7530.c @@ -502,14 +502,19 @@ static bool mt7531_dual_sgmii_supported( static int mt7531_pad_setup(struct dsa_switch *ds, phy_interface_t interface) { - struct mt7530_priv *priv = ds->priv; + return 0; +} + +static void +mt7531_pll_setup(struct mt7530_priv *priv) +{ u32 top_sig; u32 hwstrap; u32 xtal; u32 val;
if (mt7531_dual_sgmii_supported(priv)) - return 0; + return;
val = mt7530_read(priv, MT7531_CREV); top_sig = mt7530_read(priv, MT7531_TOP_SIG_SR); @@ -588,8 +593,6 @@ mt7531_pad_setup(struct dsa_switch *ds, val |= EN_COREPLL; mt7530_write(priv, MT7531_PLLGP_EN, val); usleep_range(25, 35); - - return 0; }
static void @@ -1731,6 +1734,8 @@ mt7531_setup(struct dsa_switch *ds) SYS_CTRL_PHY_RST | SYS_CTRL_SW_RST | SYS_CTRL_REG_RST);
+ mt7531_pll_setup(priv); + if (mt7531_dual_sgmii_supported(priv)) { priv->p5_intf_sel = P5_INTF_SEL_GMAC5_SGMII;
@@ -2281,8 +2286,6 @@ mt7531_cpu_port_config(struct dsa_switch case 6: interface = PHY_INTERFACE_MODE_2500BASEX;
- mt7531_pad_setup(ds, interface); - priv->p6_interface = interface; break; default: