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ARC: [plat-axs*/plat-hsdk]: Allow U-Boot to pass MAC-address to the kernel

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Otherwise kernel uses random MAC which is not very conveniet.
With that change in place use might set desired MAC in U-Boot
with "setenv ethaddr 11:22:33:44:55:66", save environment and
then from boot to boot the same MAC will be used by the kernel.

One other note for this to happen it's required to pass
board's .dtb in U-Boot's "bootm" command like that:
------------------->8-----------------
bootm 0x82000000 - 0x84000000
------------------->8-----------------

Here 0x82000000 is location of uImage while
0x80000000 is location of either axs10x.dtb or hsdk.dtb
previously loaded from SD-card, USB storage or TFTP server.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: stable@vger.kernel.org # 4.14
Cc: devicetree@vger.kernel.org
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
This commit is contained in:
Alexey Brodkin 2018-08-02 13:19:37 +03:00 committed by Vineet Gupta
parent 4051c323c5
commit 5c0920897a
2 changed files with 12 additions and 2 deletions
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7
arch/arc/boot/dts/axs10x_mb.dtsi
View File

@ -9,6 +9,10 @@
*/
/ {
aliases {
ethernet = &gmac;
};
axs10x_mb {
compatible = "simple-bus";
#address-cells = <1>;
@ -68,7 +72,7 @@
};
};
ethernet@0x18000 {
gmac: ethernet@0x18000 {
#interrupt-cells = <1>;
compatible = "snps,dwmac";
reg = < 0x18000 0x2000 >;
@ -81,6 +85,7 @@
max-speed = <100>;
resets = <&creg_rst 5>;
reset-names = "stmmaceth";
mac-address = [00 00 00 00 00 00]; /* Filled in by U-Boot */
};
ehci@0x40000 {

7
arch/arc/boot/dts/hsdk.dts
View File

@ -25,6 +25,10 @@
bootargs = "earlycon=uart8250,mmio32,0xf0005000,115200n8 console=ttyS0,115200n8 debug print-fatal-signals=1";
};
aliases {
ethernet = &gmac;
};
cpus {
#address-cells = <1>;
#size-cells = <0>;
@ -163,7 +167,7 @@
#clock-cells = <0>;
};
ethernet@8000 {
gmac: ethernet@8000 {
#interrupt-cells = <1>;
compatible = "snps,dwmac";
reg = <0x8000 0x2000>;
@ -176,6 +180,7 @@
phy-handle = <&phy0>;
resets = <&cgu_rst HSDK_ETH_RESET>;
reset-names = "stmmaceth";
mac-address = [00 00 00 00 00 00]; /* Filled in by U-Boot */
mdio {
#address-cells = <1>;