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net: dsa: b53: fix IP_MULTICAST_CTRL on BCM5325

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[ Upstream commit 044d5ce2788b165798bfd173548e61bf7b6baf4d ]

BCM5325 doesn't implement B53_UC_FWD_EN, B53_MC_FWD_EN or B53_IPMC_FWD_EN.

Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Link: https://patch.msgid.link/20250614080000.1884236-9-noltari@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Álvaro Fernández Rojas 2025-06-14 09:59:54 +02:00 • committed by Greg Kroah-Hartman
commit bcef637358
2 changed files with 12 additions and 7 deletions
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18
drivers/net/dsa/b53/b53_common.c
View file

@ -342,14 +342,18 @@ static void b53_set_forwarding(struct b53_device *dev, int enable)
b53_read8(dev, B53_CTRL_PAGE, B53_SWITCH_CTRL, &mgmt);
mgmt |= B53_MII_DUMB_FWDG_EN;
b53_write8(dev, B53_CTRL_PAGE, B53_SWITCH_CTRL, mgmt);
}
/* Look at B53_UC_FWD_EN and B53_MC_FWD_EN to decide whether
* frames should be flooded or not.
*/
b53_read8(dev, B53_CTRL_PAGE, B53_IP_MULTICAST_CTRL, &mgmt);
mgmt |= B53_UC_FWD_EN | B53_MC_FWD_EN | B53_IPMC_FWD_EN;
b53_write8(dev, B53_CTRL_PAGE, B53_IP_MULTICAST_CTRL, mgmt);
/* Look at B53_UC_FWD_EN and B53_MC_FWD_EN to decide whether
* frames should be flooded or not.
*/
b53_read8(dev, B53_CTRL_PAGE, B53_IP_MULTICAST_CTRL, &mgmt);
mgmt |= B53_UC_FWD_EN | B53_MC_FWD_EN | B53_IPMC_FWD_EN;
b53_write8(dev, B53_CTRL_PAGE, B53_IP_MULTICAST_CTRL, mgmt);
} else {
b53_read8(dev, B53_CTRL_PAGE, B53_IP_MULTICAST_CTRL, &mgmt);
mgmt |= B53_IP_MCAST_25;
b53_write8(dev, B53_CTRL_PAGE, B53_IP_MULTICAST_CTRL, mgmt);
}
}
static void b53_enable_vlan(struct b53_device *dev, bool enable,

1
drivers/net/dsa/b53/b53_regs.h
View file

@ -103,6 +103,7 @@
/* IP Multicast control (8 bit) */
#define B53_IP_MULTICAST_CTRL 0x21
#define B53_IP_MCAST_25 BIT(0)
#define B53_IPMC_FWD_EN BIT(1)
#define B53_UC_FWD_EN BIT(6)
#define B53_MC_FWD_EN BIT(7)