target/linux/generic/backport-6.1/790-29-v6.9-net-dsa-mt7530-do-not-run-mt7530_setup_port5-if-port.patch

   1 From 3b423061eb3a62e59b57939ae1e1234756a0f6a1 Mon Sep 17 00:00:00 2001
   2 From: =?UTF-8?q?Ar=C4=B1n=C3=A7=20=C3=9CNAL?= <arinc.unal@arinc9.com>
   3 Date: Mon, 22 Jan 2024 08:35:58 +0300
   4 Subject: [PATCH 29/48] net: dsa: mt7530: do not run mt7530_setup_port5() if
   5  port 5 is disabled
   6 MIME-Version: 1.0
   7 Content-Type: text/plain; charset=UTF-8
   8 Content-Transfer-Encoding: 8bit
   9
  10 There's no need to run all the code on mt7530_setup_port5() if port 5 is
  11 disabled. The only case for calling mt7530_setup_port5() from
  12 mt7530_setup() is when PHY muxing is enabled. That is because port 5 is not
  13 defined as a port on the devicetree, therefore, it cannot be controlled by
  14 phylink.
  15
  16 Because of this, run mt7530_setup_port5() if priv->p5_intf_sel is
  17 P5_INTF_SEL_PHY_P0 or P5_INTF_SEL_PHY_P4. Remove the P5_DISABLED case from
  18 mt7530_setup_port5().
  19
  20 Stop initialising the interface variable as the remaining cases will always
  21 call mt7530_setup_port5() with it initialised.
  22
  23 Signed-off-by: Arınç ÜNAL <arinc.unal@arinc9.com>
  24 Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
  25 Link: https://lore.kernel.org/r/20240122-for-netnext-mt7530-improvements-1-v3-7-042401f2b279@arinc9.com
  26 Signed-off-by: Jakub Kicinski <kuba@kernel.org>
  27 ---
  28  drivers/net/dsa/mt7530.c | 9 +++------
  29  1 file changed, 3 insertions(+), 6 deletions(-)
  30
  31 --- a/drivers/net/dsa/mt7530.c
  32 +++ b/drivers/net/dsa/mt7530.c
  33 @@ -935,9 +935,6 @@ static void mt7530_setup_port5(struct ds
  34                 /* MT7530_P5_MODE_GMAC: P5 -> External phy or 2nd GMAC */
  35                 val &= ~MHWTRAP_P5_DIS;
  36                 break;
  37 -       case P5_DISABLED:
  38 -               interface = PHY_INTERFACE_MODE_NA;
  39 -               break;
  40         default:
  41                 dev_err(ds->dev, "Unsupported p5_intf_sel %d\n",
  42                         priv->p5_intf_sel);
  43 @@ -2358,8 +2355,6 @@ mt7530_setup(struct dsa_switch *ds)
  44                  * Set priv->p5_intf_sel to the appropriate value if PHY muxing
  45                  * is detected.
  46                  */
  47 -               interface = PHY_INTERFACE_MODE_NA;
  48 -
  49                 for_each_child_of_node(dn, mac_np) {
  50                         if (!of_device_is_compatible(mac_np,
  51                                                      "mediatek,eth-mac"))
  52 @@ -2391,7 +2386,9 @@ mt7530_setup(struct dsa_switch *ds)
  53                         break;
  54                 }
  55
  56 -               mt7530_setup_port5(ds, interface);
  57 +               if (priv->p5_intf_sel == P5_INTF_SEL_PHY_P0 ||
  58 +                   priv->p5_intf_sel == P5_INTF_SEL_PHY_P4)
  59 +                       mt7530_setup_port5(ds, interface);
  60         }
  61
  62  #ifdef CONFIG_GPIOLIB