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401a6ccfaf
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 The other deleted patch 795-mt7530-register-OF-node-for-internal-MDIO-bus.patch has been replaced by an equivalent commit with a more complete patch description by upstream maintainer Arınç Ünal.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>
84 lines
2.9 KiB
Diff
84 lines
2.9 KiB
Diff
From 89017cac5f6fbaab23955818c31b3c7f1eb26f4a Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Ar=C4=B1n=C3=A7=20=C3=9CNAL?= <arinc.unal@arinc9.com>
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Date: Fri, 1 Mar 2024 12:43:05 +0200
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Subject: [PATCH 45/48] net: dsa: mt7530: simplify link operations
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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The "MT7621 Giga Switch Programming Guide v0.3", "MT7531 Reference Manual
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for Development Board v1.0", and "MT7988A Wi-Fi 7 Generation Router
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Platform: Datasheet (Open Version) v0.1" documents show that these bits are
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enabled at reset:
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PMCR_IFG_XMIT(1) (not part of PMCR_LINK_SETTINGS_MASK)
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PMCR_MAC_MODE (not part of PMCR_LINK_SETTINGS_MASK)
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PMCR_TX_EN
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PMCR_RX_EN
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PMCR_BACKOFF_EN (not part of PMCR_LINK_SETTINGS_MASK)
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PMCR_BACKPR_EN (not part of PMCR_LINK_SETTINGS_MASK)
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PMCR_TX_FC_EN
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PMCR_RX_FC_EN
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These bits also don't exist on the MT7530_PMCR_P(6) register of the switch
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on the MT7988 SoC:
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PMCR_IFG_XMIT()
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PMCR_MAC_MODE
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PMCR_BACKOFF_EN
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PMCR_BACKPR_EN
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Remove the setting of the bits not part of PMCR_LINK_SETTINGS_MASK on
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phylink_mac_config as they're already set.
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The bit for setting the port on force mode is already done on
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mt7530_setup() and mt7531_setup_common(). So get rid of
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PMCR_FORCE_MODE_ID() which helped determine which bit to use for the switch
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model.
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Signed-off-by: Arınç ÜNAL <arinc.unal@arinc9.com>
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Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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---
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drivers/net/dsa/mt7530.c | 12 +-----------
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drivers/net/dsa/mt7530.h | 2 --
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2 files changed, 1 insertion(+), 13 deletions(-)
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--- a/drivers/net/dsa/mt7530.c
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+++ b/drivers/net/dsa/mt7530.c
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@@ -2694,23 +2694,13 @@ mt753x_phylink_mac_config(struct dsa_swi
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const struct phylink_link_state *state)
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{
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struct mt7530_priv *priv = ds->priv;
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- u32 mcr_cur, mcr_new;
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if ((port == 5 || port == 6) && priv->info->mac_port_config)
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priv->info->mac_port_config(ds, port, mode, state->interface);
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- mcr_cur = mt7530_read(priv, MT7530_PMCR_P(port));
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- mcr_new = mcr_cur;
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- mcr_new &= ~PMCR_LINK_SETTINGS_MASK;
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- mcr_new |= PMCR_IFG_XMIT(1) | PMCR_MAC_MODE | PMCR_BACKOFF_EN |
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- PMCR_BACKPR_EN | PMCR_FORCE_MODE_ID(priv->id);
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-
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/* Are we connected to external phy */
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if (port == 5 && dsa_is_user_port(ds, 5))
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- mcr_new |= PMCR_EXT_PHY;
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-
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- if (mcr_new != mcr_cur)
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- mt7530_write(priv, MT7530_PMCR_P(port), mcr_new);
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+ mt7530_set(priv, MT7530_PMCR_P(port), PMCR_EXT_PHY);
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}
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static void mt753x_phylink_mac_link_down(struct dsa_switch *ds, int port,
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--- a/drivers/net/dsa/mt7530.h
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+++ b/drivers/net/dsa/mt7530.h
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@@ -324,8 +324,6 @@ enum mt7530_vlan_port_acc_frm {
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MT7531_FORCE_DPX | \
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MT7531_FORCE_RX_FC | \
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MT7531_FORCE_TX_FC)
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-#define PMCR_FORCE_MODE_ID(id) ((((id) == ID_MT7531) || ((id) == ID_MT7988)) ? \
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- MT7531_FORCE_MODE : PMCR_FORCE_MODE)
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#define PMCR_LINK_SETTINGS_MASK (PMCR_TX_EN | PMCR_FORCE_SPEED_1000 | \
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PMCR_RX_EN | PMCR_FORCE_SPEED_100 | \
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PMCR_TX_FC_EN | PMCR_RX_FC_EN | \
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