net: stmmac: extend use of snps,multicast-filter-bins property to xgmac

Hash based multicast filtering is an optional feature. Currently,
driver overrides the value of multicast_filter_bins based on the hash
table size. If the feature is not supported, hash table size reads 0
however the value of multicast_filter_bins remains set to default
HASH_TABLE_SIZE which is incorrect. Let's extend the use of the property
snps,multicast-filter-bins to xgmac so it can be set to 0 via devicetree
to indicate multicast filtering is not supported.

Signed-off-by: Nikunj Kela <nikunj.kela@sima.ai>
Reviewed-by: Yanteng Si <si.yanteng@linux.dev>
Link: https://patch.msgid.link/20250610200411.3751943-1-nikunj.kela@sima.ai
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
index b80c1efdb323bb6fef413aad0a0271890fc87928..4164b3a580d8970dd078e6379cc00c95bf8db854 100644 (file)
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
@@ -579,6 +579,8 @@ stmmac_probe_config_dt(struct platform_device *pdev, u8 *mac)
                plat->pmt = 1;
                if (of_property_read_bool(np, "snps,tso"))
                        plat->flags |= STMMAC_FLAG_TSO_EN;
+               of_property_read_u32(np, "snps,multicast-filter-bins",
+                                    &plat->multicast_filter_bins);
        }
 
        dma_cfg = devm_kzalloc(&pdev->dev, sizeof(*dma_cfg),