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wifi: mt76: support per-band MAC addresses from OF child nodes

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With dual-band-dual-congruent front-ends which appear as two independent
radios it is desirable to assign a per-band MAC address from device-tree,
eg. using nvmem-cells.
Support specifying MAC-address related properties in band-specific child
nodes, e.g.
        wifi@0,0 {
                reg = <0x0000 0 0 0 0>;
                #addr-cells = <1>;
                #size-cells = <0>;

                band@0 {
                        /* 2.4 GHz */
                        reg = <0>;
                        nvmem-cells = <&macaddr 2>;
                        nvmem-cell-names = "mac-address";
                };

                band@1 {
                        /* 5 GHz */
                        reg = <1>;
                        nvmem-cells = <&macaddr 3>;
                        nvmem-cell-names = "mac-address";
                };
        };

Signed-off-by: Daniel Golle <[email protected]>
Tested-by: Shiji Yang <[email protected]>
Link: https://patch.msgid.link/c69fec6bd0b6e4e8a2a776cbc860fceb977fa4b6.1690841657.git.daniel@makrotopia.org
This commit is contained in:
Daniel Golle
2024-09-05 14:45:03 +02:00
committed by Felix Fietkau
parent a897606f7c
commit 65cc3daf2a
1 changed files with 17 additions and 2 deletions
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eeprom.c
+17 -2
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@@ -163,9 +163,24 @@ void
mt76_eeprom_override(struct mt76_phy *phy)
{
struct mt76_dev *dev = phy->dev;
struct device_node *np = dev->dev->of_node;
struct device_node *np = dev->dev->of_node, *band_np;
bool found_mac = false;
u32 reg;
int ret;
of_get_mac_address(np, phy->macaddr);
for_each_child_of_node(np, band_np) {
ret = of_property_read_u32(band_np, "reg", &reg);
if (ret)
continue;
if (reg == phy->band_idx) {
found_mac = !of_get_mac_address(band_np, phy->macaddr);
break;
}
}
if (!found_mac)
of_get_mac_address(np, phy->macaddr);
if (!is_valid_ether_addr(phy->macaddr)) {
eth_random_addr(phy->macaddr);