linux-kernel - Re: [PATCH 1/2] arm64: dts: ti: k3-am62-wakeup: Enable cpsw_mac

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Message-ID: <1d0e3bd6-eabb-4083-aa20-faae7fd79cff@ti.com>
Date: Mon, 27 Oct 2025 10:50:54 +0530
From: Vignesh Raghavendra <vigneshr@...com>
To: Daniel Schultz <d.schultz@...tec.de>, <nm@...com>, <kristo@...nel.org>,
        <robh@...nel.org>, <krzk+dt@...nel.org>, <conor+dt@...nel.org>,
        <linux-arm-kernel@...ts.infradead.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
CC: <upstream@...ts.phytec.de>
Subject: Re: [PATCH 1/2] arm64: dts: ti: k3-am62-wakeup: Enable
 cpsw_mac_syscon in U-Boot

Hi Daniel,

On 23/09/25 18:39, Daniel Schultz wrote:
> Add the "bootph-all" property to cpsw_mac_syscon.
> 
> This fuse region contains the internal MAC address. Without this
> syscon node enabled, this interface will get a random MAC during
> network boot. This is problematic because the AM62x network
> boot is using BOOTP protocol for some binaries and this protocol
> does not support dynamic lease expiration. Therefore, the DHCP
> server can run out of free IP addresses.
> 
> Signed-off-by: Daniel Schultz <d.schultz@...tec.de>
> ---
>  arch/arm64/boot/dts/ti/k3-am62-wakeup.dtsi | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/arch/arm64/boot/dts/ti/k3-am62-wakeup.dtsi b/arch/arm64/boot/dts/ti/k3-am62-wakeup.dtsi
> index 6549b7efa656..41ac17e809be 100644
> --- a/arch/arm64/boot/dts/ti/k3-am62-wakeup.dtsi
> +++ b/arch/arm64/boot/dts/ti/k3-am62-wakeup.dtsi
> @@ -30,6 +30,7 @@ opp_efuse_table: syscon@18 {
>  		cpsw_mac_syscon: ethernet-mac-syscon@200 {
>  			compatible = "ti,am62p-cpsw-mac-efuse", "syscon";
>  			reg = <0x200 0x8>;
> +			bootph-all;

Please restrict this to boards that actually support network boot by
moving to dts or SoM specific dtsi? Same applies to 2/2

>  		};
>  
>  		usb0_phy_ctrl: syscon@...8 {

-- 
Regards
Vignesh
https://ti.com/opensource