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318b789cf3
A considerable amount of b53 patches has been backported to 6.12, so we can rename and group the remaining ones. Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
113 lines
3.2 KiB
Diff
113 lines
3.2 KiB
Diff
From 0cbec9aef5a86194117a956546dc1aec95031f37 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= <noltari@gmail.com>
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Date: Sat, 14 Jun 2025 09:59:50 +0200
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Subject: [PATCH] net: dsa: b53: detect BCM5325 variants
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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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We need to be able to differentiate the BCM5325 variants because:
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- BCM5325M switches lack the ARLIO_PAGE->VLAN_ID_IDX register.
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- BCM5325E have less 512 ARL buckets instead of 1024.
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Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
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Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
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Link: https://patch.msgid.link/20250614080000.1884236-5-noltari@gmail.com
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Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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---
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drivers/net/dsa/b53/b53_common.c | 24 +++++++++++++++++++++---
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drivers/net/dsa/b53/b53_priv.h | 19 +++++++++++++++++++
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2 files changed, 40 insertions(+), 3 deletions(-)
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--- a/drivers/net/dsa/b53/b53_common.c
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+++ b/drivers/net/dsa/b53/b53_common.c
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@@ -1835,7 +1835,8 @@ static int b53_arl_op(struct b53_device
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/* Perform a read for the given MAC and VID */
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b53_write48(dev, B53_ARLIO_PAGE, B53_MAC_ADDR_IDX, mac);
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- b53_write16(dev, B53_ARLIO_PAGE, B53_VLAN_ID_IDX, vid);
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+ if (!is5325m(dev))
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+ b53_write16(dev, B53_ARLIO_PAGE, B53_VLAN_ID_IDX, vid);
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/* Issue a read operation for this MAC */
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ret = b53_arl_rw_op(dev, 1);
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@@ -2903,6 +2904,9 @@ static int b53_switch_init(struct b53_de
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}
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}
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+ if (is5325e(dev))
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+ dev->num_arl_buckets = 512;
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+
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dev->num_ports = fls(dev->enabled_ports);
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dev->ds->num_ports = min_t(unsigned int, dev->num_ports, DSA_MAX_PORTS);
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@@ -3004,10 +3008,24 @@ int b53_switch_detect(struct b53_device
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b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_TABLE_ACCESS_25, 0xf);
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b53_read16(dev, B53_VLAN_PAGE, B53_VLAN_TABLE_ACCESS_25, &tmp);
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- if (tmp == 0xf)
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+ if (tmp == 0xf) {
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+ u32 phy_id;
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+ int val;
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+
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dev->chip_id = BCM5325_DEVICE_ID;
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- else
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+
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+ val = b53_phy_read16(dev->ds, 0, MII_PHYSID1);
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+ phy_id = (val & 0xffff) << 16;
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+ val = b53_phy_read16(dev->ds, 0, MII_PHYSID2);
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+ phy_id |= (val & 0xfff0);
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+
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+ if (phy_id == 0x00406330)
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+ dev->variant_id = B53_VARIANT_5325M;
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+ else if (phy_id == 0x0143bc30)
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+ dev->variant_id = B53_VARIANT_5325E;
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+ } else {
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dev->chip_id = BCM5365_DEVICE_ID;
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+ }
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break;
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case BCM5389_DEVICE_ID:
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case BCM5395_DEVICE_ID:
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--- a/drivers/net/dsa/b53/b53_priv.h
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+++ b/drivers/net/dsa/b53/b53_priv.h
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@@ -84,6 +84,12 @@ enum {
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BCM53134_DEVICE_ID = 0x5075,
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};
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+enum b53_variant_id {
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+ B53_VARIANT_NONE = 0,
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+ B53_VARIANT_5325E,
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+ B53_VARIANT_5325M,
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+};
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+
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struct b53_pcs {
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struct phylink_pcs pcs;
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struct b53_device *dev;
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@@ -118,6 +124,7 @@ struct b53_device {
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/* chip specific data */
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u32 chip_id;
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+ enum b53_variant_id variant_id;
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u8 core_rev;
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u8 vta_regs[3];
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u8 duplex_reg;
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@@ -165,6 +172,18 @@ static inline int is5325(struct b53_devi
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return dev->chip_id == BCM5325_DEVICE_ID;
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}
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+static inline int is5325e(struct b53_device *dev)
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+{
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+ return is5325(dev) &&
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+ dev->variant_id == B53_VARIANT_5325E;
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+}
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+
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+static inline int is5325m(struct b53_device *dev)
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+{
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+ return is5325(dev) &&
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+ dev->variant_id == B53_VARIANT_5325M;
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+}
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+
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static inline int is5365(struct b53_device *dev)
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{
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#ifdef CONFIG_BCM47XX
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