linux-kernel - Re: [PATCH v2 1/3] dt-bindings: phy: cadence-torrent: Add latency properties

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Date:   Tue, 9 May 2023 17:31:19 +0200
From:   Christian Gmeiner <christian.gmeiner@...il.com>
To:     Bjorn Helgaas <helgaas@...nel.org>
Cc:     Dominic Rath <rath@...-augsburg.de>, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, tjoseph@...ence.com,
        bhelgaas@...gle.com, lpieralisi@...nel.org, nm@...com,
        vigneshr@...com, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org,
        bahle@...-augsburg.de
Subject: Re: [PATCH v2 1/3] dt-bindings: phy: cadence-torrent: Add latency properties

Hi Bjorn,

>
> On Thu, Apr 27, 2023 at 07:50:30AM +0200, Dominic Rath wrote:
> > From: Alexander Bahle <bahle@...-augsburg.de>
> >
> > Add "tx-phy-latency-ps" and "rx-phy-latency-ps" DT bindings for
> > setting the PCIe PHY latencies.
> > The properties expect a list of uint32 PHY latencies in picoseconds for
> > every supported speed starting at PCIe Gen1, e.g.:
> >
> >   tx-phy-latency-ps = <100000 200000>; /* Gen1: 100ns, Gen2: 200ns */
> >   rx-phy-latency-ps = <150000 250000>; /* Gen1: 150ns, Gen2: 250ns */
>
> Are these things that could/should be described in a more generic
> place?  They don't look necessarily Cadence-specific.
>

As there is currently no generic binding, would you like to see a new
yaml binding
added (Documentation/devicetree/bindings/phy/phy.yaml) that contains just the
two phy properties?

-- 
greets
--
Christian Gmeiner, MSc

https://christian-gmeiner.info/privacypolicy