Re: [PATCH] riscv: dts: spacemit: k3-pico-itx: Fix non-functional ethernet TX timing
Yixun Lan <[email protected]> Tue, 14 Jul 2026 09:08:18 +0000
| Newsgroups | dev.linux.lists.spacemit,org.kernel.vger.linux-kernel |
|---|---|
| Message-ID | <178402007498.1567320.3036390177940599255.b4-ty@b4> |
On Mon, 08 Jun 2026 20:23:58 +0200, Andrew Rembrandt wrote:
> The "rgmii-id" PHY mode applies a symmetric 2ns internal delay in the
> PHY. On the Pico-ITX board this leaves insufficient TX timing margin and
> no ethernet traffic passes.
>
> Add a 400ps MAC-side TX internal delay on top of the PHY's delay to
> correct the TX clock/data skew. The value follows the vendor fork's
> asymmetric tuning (tx-phase 73 x 33.3ps - 2000ps ID ~= 400ps); the
> driver rounds tx-internal-delay-ps to the nearest supported step.
>
> [...]
Applied, thanks!
[1/1] riscv: dts: spacemit: k3-pico-itx: Fix non-functional ethernet TX timing
https://git.kernel.org/pub/scm/linux/kernel/git/spacemit/linux.git/commit/?id=773a0731959424d7f82be207b64acfa5b99a4978
Best regards,
--
Yixun Lan <[email protected]>