From: Nicolas Frattaroli <nicolas.frattaroli@collabora.com>
To: Conor Dooley <conor@kernel.org>
Cc: Alim Akhtar <alim.akhtar@samsung.com>,
Avri Altman <avri.altman@wdc.com>,
Bart Van Assche <bvanassche@acm.org>,
Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
Matthias Brugger <matthias.bgg@gmail.com>,
AngeloGioacchino Del Regno
<angelogioacchino.delregno@collabora.com>,
Chunfeng Yun <chunfeng.yun@mediatek.com>,
Vinod Koul <vkoul@kernel.org>,
Kishon Vijay Abraham I <kishon@kernel.org>,
Peter Wang <peter.wang@mediatek.com>,
Stanley Jhu <chu.stanley@gmail.com>,
"James E.J. Bottomley" <James.Bottomley@hansenpartnership.com>,
"Martin K. Petersen" <martin.petersen@oracle.com>,
Philipp Zabel <p.zabel@pengutronix.de>,
Louis-Alexis Eyraud <louisalexis.eyraud@collabora.com>,
kernel@collabora.com, linux-scsi@vger.kernel.org,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-mediatek@lists.infradead.org,
linux-phy@lists.infradead.org
Subject: Re: [PATCH v2 1/5] dt-bindings: ufs: mediatek,ufs: Add mt8196-ufshci variant
Date: Mon, 20 Oct 2025 15:56:39 +0200 [thread overview]
Message-ID: <2018479.PYKUYFuaPT@workhorse> (raw)
In-Reply-To: <10741243.nUPlyArG6x@workhorse>
On Monday, 20 October 2025 15:27:40 Central European Summer Time Nicolas Frattaroli wrote:
> On Saturday, 18 October 2025 23:30:17 Central European Summer Time Conor Dooley wrote:
> > On Fri, Oct 17, 2025 at 09:02:07PM +0200, Nicolas Frattaroli wrote:
> > > On Friday, 17 October 2025 17:42:10 Central European Summer Time Conor Dooley wrote:
> > > > On Thu, Oct 16, 2025 at 02:06:43PM +0200, Nicolas Frattaroli wrote:
> > >
> > > > > +
> > > > > + freq-table-hz: true
> > > >
> > > > Then you add this deprecated property, which isn't mentioned in the
> > > > commit message and I don't see why a deprecated property is needed.
> > >
> > > I'll rework it to use operating-points-v2 instead. It needs one of
> > > the two, or else on mt8196 at least, the hardware locks up.
> > >
> > > I'll still add operating-points-v2 for all SoCs though, if that's
> > > okay with you.
> >
> > Right. I'd accept freq-table-hz if the other devices here have been
> > using it all along, but if this is something new - then please use the
> > operating-points-v2 property. Looking at the binding example, it looks
> > like it does indeed use freq-table-hz, so that's probably justification
> > enough to keep doing so.
>
> Turns out the only usage of freq-table-hz is in the examples I've added.
> Mainline does not at all have any nodes in the DT right now that would
> use this property.
>
> Ergo, I think I will go for operating-points-v2. We might as well clean
> this up now instead of ossifying a deprecated property in a new binding
> for the sake of downstream compatibility (which should never be a concern)
> that I am already breaking. The added benefit is that if we ever do get
> better OPP definitions than just two clock states, then we can actually
> add the OPP bandwidth properties so implementations can make informed
> decisions.
>
Nevermind, I see the existing binding had it in the example for 8183,
just not in the binding itself. So freq-table-hz it is.
next prev parent reply other threads:[~2025-10-20 13:57 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-10-16 12:06 [PATCH v2 0/5] MediaTek UFS Cleanup and MT8196 Enablement Nicolas Frattaroli
2025-10-16 12:06 ` [PATCH v2 1/5] dt-bindings: ufs: mediatek,ufs: Add mt8196-ufshci variant Nicolas Frattaroli
2025-10-17 15:42 ` Conor Dooley
2025-10-17 19:02 ` Nicolas Frattaroli
2025-10-18 21:30 ` Conor Dooley
2025-10-20 13:27 ` Nicolas Frattaroli
2025-10-20 13:56 ` Nicolas Frattaroli [this message]
2025-10-16 12:06 ` [PATCH v2 2/5] dt-bindings: phy: Add mediatek,mt8196-ufsphy variant Nicolas Frattaroli
2025-10-17 6:52 ` Peter Wang (王信友)
2025-10-16 12:06 ` [PATCH v2 3/5] scsi: ufs: mediatek: Move MTK_SIP_UFS_CONTROL to mtk_sip_svc.h Nicolas Frattaroli
2025-10-17 6:53 ` Peter Wang (王信友)
2025-10-16 12:06 ` [PATCH v2 4/5] phy: mediatek: ufs: Add support for resets Nicolas Frattaroli
2025-10-17 6:53 ` Peter Wang (王信友)
2025-10-16 12:06 ` [PATCH v2 5/5] scsi: ufs: mediatek: Rework resets Nicolas Frattaroli
2025-10-16 13:06 ` Philipp Zabel
2025-10-17 6:54 ` Peter Wang (王信友)
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