Re: [PATCH RFC 1/3] arm64: dts: qcom: nord: Add Ethernet support

[Shawn Guo]

On Wed, Nov 04, 2026 at 09:04:33AM +0100, Konrad Dybcio wrote:
> On 11/4/26 8:59 AM, Shawn Guo wrote:
> > On Mon, Nov 02, 2026 at 04:01:03PM +0100, Konrad Dybcio wrote:
> >> On 11/1/26 9:04 AM, Shawn Guo wrote:
> >>> From: Mohd Ayaan Anwar <mohd.anwar@xxxxxxxxxxxxxxxx>
> >>>
> >>> Describe both Nord 10-Gbps Ethernet controllers, including their XPCS and
> >>> SerDes blocks, clocks, resets, power domains, interconnects, SMMU streams
> >>> and DMA queues.
> >>>
> >>> Signed-off-by: Mohd Ayaan Anwar <mohd.anwar@xxxxxxxxxxxxxxxx>
> >>> Signed-off-by: Shawn Guo <shengchao.guo@xxxxxxxxxxxxxxxx>
> >>> ---
> >>
> >> [...]
> >>
> >>> +	phys = <&serdes0>;
> >>> +	phy-names = "serdes";
> >>
> >> I believe this holds for both GearVM and embedded, so you can move
> >> it to the common DTSI
> > 
> > No, this doesn't apply to GearVM. The SerDes is owned entirely by the SCMI
> > server firmware for GearVM variant. LDOs, clkref, reset, and the per-speed
> > PLL/RX/TX programming driven by an SCMI perf domain whose level is
> > the link speed.
> 
> Right, but I meant the assignment to the EMACs specifically

The EMAC0/SerDes0 and EMAC1/SerDes1 pairing is indeed the same on both
variants. But the serdes nodes only exist in nord-embedded.dtsi, since
GearVM doesn't expose the PHY to Linux. Or am I missing your point
completely?

Shawn