Messages in this thread | | | Date | Wed, 31 Mar 2021 12:46:50 +0100 | From | Mark Brown <> | Subject | Re: [PATCH v3 1/6] dt-bindings: PCI: Add bindings for Brcmstb EP voltage regulators |
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On Tue, Mar 30, 2021 at 12:23:35PM -0400, Jim Quinlan wrote: > On Tue, Mar 30, 2021 at 11:30 AM Mark Brown <broonie@kernel.org> wrote:
> > For a soldered down part I'd expect we'd want both (if the host even > > cares) - for anything except a supply that I/O or something else shared > > is referenced off there's no great reason why it has to be physically > > the same supply going to every device on the bus so each device should > > be able to specify separately.
> Our developer and reference boards frequently have Mini and half-mini > PCIe sockets (a few exceptions), whereas production boards are mostly > soldered down.
On reflection I think the above probably also applies to sockets - you'd just have to have a socket visible in the DT.
> If I resubmit this pullreq so that it looks for "vpcie12v-supply" > and "vpcie3v3-supply" in the host node, will that be acceptable for > both of you?
I think you will need both (assuming the controller actually physically gets the supplies) - like I say the sockets/devices may not all share the same 12V and 3.3V rails. [unhandled content-type:application/pgp-signature] | |