Re: [PATCH] ARM: dts: aspeed: Enable networking for Asus Kommando IPMI Card

[Andrew Lunn <andrew@lunn.ch>]

On Sat, Mar 28, 2026 at 06:39:59PM -0500, Anirudh Srinivasan wrote:
> Adds the DT nodes needed for ethernet support for Asus Kommando, with
> phy mode set to rgmii-id.
> 
> When this DT was originally added, the phy mode was set to rgmii (which
> was incorrect). It was suggested to remove networking support from the
> DT till the Aspeed networking driver was patched so that the correct phy
> mode could be used.
> 
> The discussion in [1] mentions that u-boot was inserting clk delays that
> weren't needed, which resulted in needing to set the phy mode in linux
> to rgmii incorrectly. The solution suggested there was to patch u-boot to
> no longer insert these clk delays and use rgmii-id as the phy mode for
> any future DTs added to linux.
> 
> This DT was tested with a u-boot DT modified to insert clk delays of 0
> (instead of patching u-boot itself). [2] adds a u-boot DT for this
> device (without networking) and describes how to patch it to add
> networking support. If this patched DT is used, then networking works
> with rgmii-id phy mode in both u-boot and linux.

I've been looking at

https://elixir.bootlin.com/u-boot/v2026.04-rc5/source/drivers/clk/aspeed/clk_ast2600.c

And i don't see where mac2-clk-delay is implemented. Could you point
out the code?

Thanks
	Andrew