On 6/9/21 12:19 AM, Grygorii Strashko wrote:
> The current device tree CPSW3g node adds non-zero "mac-address" property to
> the ports, which prevents random MAC address assignment to network devices
> if bootloader failed to update DT. This may cause more then one host to
> have the same MAC in the network.
>
> mac-address = [00 00 de ad be ef];
> mac-address = [00 01 de ad be ef];
>
> In addition, there is one MAC address available in eFuse registers which
> can be used for default port 1.
>
> Hence, fix ports MAC properties by:
> - resetting "mac-address" property to 0
> - adding ti,syscon-efuse = <&main_conf 0x200> to Port 1
>
> Fixes: 3753b12877b6 ("arm64: dts: ti: k3-am64-main: Add CPSW DT node")
> Signed-off-by: Grygorii Strashko <grygorii.strashko@xxxxxx>
> ---
Reviewed-by: Vignesh Raghavendra <vigneshr@xxxxxx>
> arch/arm64/boot/dts/ti/k3-am64-main.dtsi | 5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/arch/arm64/boot/dts/ti/k3-am64-main.dtsi b/arch/arm64/boot/dts/ti/k3-am64-main.dtsi
> index effb9d2e3c25..7f7178a7a055 100644
> --- a/arch/arm64/boot/dts/ti/k3-am64-main.dtsi
> +++ b/arch/arm64/boot/dts/ti/k3-am64-main.dtsi
> @@ -514,7 +514,8 @@
> ti,mac-only;
> label = "port1";
> phys = <&phy_gmii_sel 1>;
> - mac-address = [00 00 de ad be ef];
> + mac-address = [00 00 00 00 00 00];
> + ti,syscon-efuse = <&main_conf 0x200>;
> };
>
> cpsw_port2: port@2 {
> @@ -522,7 +523,7 @@
> ti,mac-only;
> label = "port2";
> phys = <&phy_gmii_sel 2>;
> - mac-address = [00 01 de ad be ef];
> + mac-address = [00 00 00 00 00 00];
> };
> };
>
>
