openwrt/target/linux/generic/backport-6.1/790-17-v6.5-net-dsa-mt7530-update-PCS-driver-to-use-neg_mode.patch
Daniel Golle 401a6ccfaf generic: 6.1: sync mt7530 DSA driver with upstream
Backport lots upstream changes, many of them fixes, for the mt7530 DSA
driver. Some of them may or may not find they way into Linux 6.1
stable, some certainly won't because they are fixes for backported
commits which aren't even present in Linux 6.1 upstream.

Apart from adding new patches, also remove mutated patch
723-net-mt7531-ensure-all-MACs-are-powered-down-before-r.patch
which should never have been added for Linux 6.1 -- it was applied
already upstream but coincidentally would fuzzy-apply in the wrong
place as well (for MT7530 instead of MT7531). While that didn't really
hurt anyone it is just unneeded.

The other deleted patch
795-mt7530-register-OF-node-for-internal-MDIO-bus.patch
has been replaced by an equivalent commit with a more complete patch
description by upstream maintainer Arınç Ünal.

The remaining differences compared to the upstream driver are:
 * C22/C45 MDIO ops aren't split
   Upstream did that, backporting it would require making changes to
   *all* DSA drivers
 * 'slave' -> 'user', 'master' -> 'conduit' language change in DSA
 * support for selecting preferred CPU port on MT7531
   Also this would require too many DSA framework changes potentially
   affecting other devices. If we ever really use Linux 6.1 in a
   release (I hope not) we can still reconsider to make the effort to
   backport that.

In addition to some minor bug fixes and style improvements the switch
should now behave more conformant when it comes to link-local frames,
and we will again be able to cleanly pick patches from upstream.

MAINTAIERS NOTE:
Three patches are already part of Linux stable and should be removed with
the next minor kernel version bump:
789-STABLE-01-net-dsa-mt7530-prevent-possible-incorrect-XTAL-frequ.patch
789-STABLE-02-net-dsa-mt7530-fix-link-local-frames-that-ingress-vl.patch
789-STABLE-03-net-dsa-mt7530-fix-handling-of-all-link-local-frames.patch

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
2024-04-10 18:50:32 +01:00

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From fb6858e2c3b931433ea4d25871c272ee4c01bd99 Mon Sep 17 00:00:00 2001
From: "Russell King (Oracle)" <rmk+kernel@armlinux.org.uk>
Date: Fri, 16 Jun 2023 13:07:29 +0100
Subject: [PATCH 17/48] net: dsa: mt7530: update PCS driver to use neg_mode
Update mt7530's embedded PCS driver to use neg_mode, even though it
makes no use of it or the "mode" argument. This makes the driver
consistent with converted drivers.
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://lore.kernel.org/r/E1qA8Ej-00EaGR-Fk@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
drivers/net/dsa/mt7530.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/net/dsa/mt7530.c
+++ b/drivers/net/dsa/mt7530.c
@@ -3036,7 +3036,7 @@ static void mt7530_pcs_get_state(struct
state->pause |= MLO_PAUSE_TX;
}
-static int mt753x_pcs_config(struct phylink_pcs *pcs, unsigned int mode,
+static int mt753x_pcs_config(struct phylink_pcs *pcs, unsigned int neg_mode,
phy_interface_t interface,
const unsigned long *advertising,
bool permit_pause_to_mac)
@@ -3064,6 +3064,7 @@ mt753x_setup(struct dsa_switch *ds)
/* Initialise the PCS devices */
for (i = 0; i < priv->ds->num_ports; i++) {
priv->pcs[i].pcs.ops = priv->info->pcs_ops;
+ priv->pcs[i].pcs.neg_mode = true;
priv->pcs[i].priv = priv;
priv->pcs[i].port = i;
}