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realtek: tl-sg2xxx: read MAC address from nvmem-cells

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The TP-Link RTL83xx based switches have their MAC address programmed
in the "para" partition. While in theory, the format of this partition
is dynamic, in practice, the MAC address appears to be located at a
consistent address. Thus, use nvmem-cells to read this MAC address.

The main MAC is required for deriving the MAC address of the switch
ports. Instead of reading it via mtd_get_mac_binary(), alias the
ethernet0 node as the label-mac-device, and use get_mac_label().

Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
This commit is contained in:
Alexandru Gagniuc 2022-08-20 18:22:40 -05:00 committed by Sander Vanheule
parent 5f026f1272
commit d55c087390
3 changed files with 23 additions and 1 deletions
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2
target/linux/realtek/base-files/etc/board.d/02_network
View File

@ -41,7 +41,7 @@ hpe,1920-24g)
;;
tplink,sg2008p-v1|\
tplink,sg2452p-v4)
label_mac=$(mtd_get_mac_binary para 0xfdff4)
label_mac=$(get_mac_label)
lan_mac="$label_mac"
;;
*)

11
target/linux/realtek/dts-5.10/rtl8380_tplink_sg2xxx.dtsi
View File

@ -11,6 +11,7 @@
led-failsafe = &led_power;
led-running = &led_power;
led-upgrade = &led_power;
label-mac-device = &ethernet0;
};
memory@0 {
@ -128,15 +129,25 @@
reg = <0x1b00000 0x400000>;
};
partition@1f00000 {
compatible = "nvmem-cells";
label = "para";
reg = <0x1f00000 0x100000>;
#address-cells = <1>;
#size-cells = <1>;
read-only;
factory_macaddr: macaddr@fdff4 {
reg = <0xfdff4 0x6>;
};
};
};
};
};
&ethernet0 {
nvmem-cells = <&factory_macaddr>;
nvmem-cell-names = "mac-address";
mdio: mdio-bus {
compatible = "realtek,rtl838x-mdio";
#address-cells = <1>;

11
target/linux/realtek/dts-5.10/rtl8393_tplink_sg2452p-v4.dts
View File

@ -20,6 +20,7 @@
led-failsafe = &led_sys;
led-running = &led_sys;
led-upgrade = &led_sys;
label-mac-device = &ethernet0;
};
chosen {
@ -261,15 +262,25 @@
reg = <0x1b00000 0x400000>;
};
partition@1f00000 {
compatible = "nvmem-cells";
label = "para";
reg = <0x1f00000 0x100000>;
#address-cells = <1>;
#size-cells = <1>;
read-only;
factory_macaddr: macaddr@fdff4 {
reg = <0xfdff4 0x6>;
};
};
};
};
};
&ethernet0 {
nvmem-cells = <&factory_macaddr>;
nvmem-cell-names = "mac-address";
mdio: mdio-bus {
compatible = "realtek,rtl838x-mdio";
#address-cells = <1>;