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From: Rob Herring <robh+dt@kernel.org>
To: Arnd Bergmann <arnd@kernel.org>
Cc: "Viresh Kumar" <viresh.kumar@linaro.org>,
	"Jason Wang" <jasowang@redhat.com>,
	"Michael S. Tsirkin" <mst@redhat.com>,
	"Jean-Philippe Brucker" <jean-philippe@linaro.org>,
	"Vincent Guittot" <vincent.guittot@linaro.org>,
	"Bill Mills" <bill.mills@linaro.org>,
	"Alex Bennée" <alex.bennee@linaro.org>,
	"Enrico Weigelt, metux IT consult" <info@metux.net>,
	"Jie Deng" <jie.deng@intel.com>,
	DTML <devicetree@vger.kernel.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"open list:DRM DRIVER FOR QEMU'S CIRRUS DEVICE"
	<virtualization@lists.linux-foundation.org>
Subject: Re: [PATCH V3 1/5] dt-bindings: virtio: Add binding for virtio devices
Date: Mon, 26 Jul 2021 14:36:14 -0600	[thread overview]
Message-ID: <CAL_JsqLk8q6N2Sf43em57OXKkrQ7SW01GBnAEV1zzPMYQF7agA@mail.gmail.com> (raw)
In-Reply-To: <CAK8P3a3bCk+iA+YziQrQFg6xH_d9cyySdTN_1j94D9CA8a_Sjw@mail.gmail.com>

On Mon, Jul 26, 2021 at 9:54 AM Arnd Bergmann <arnd@kernel.org> wrote:
>
> On Mon, Jul 26, 2021 at 4:57 PM Rob Herring <robh+dt@kernel.org> wrote:
> > On Sun, Jul 25, 2021 at 10:52 PM Viresh Kumar <viresh.kumar@linaro.org> wrote:
> > > +    description: |
> > > +      Exactly one node describing the virtio device. The name of the node isn't
> > > +      significant but its phandle can be used to by a user of the virtio device.
> > > +
> > > +  compatible:
> > > +    pattern: "^virtio,[0-9a-f]+$"
> >
> > DID is only 4 chars? If so, "^virtio,[0-9a-f]{1,4}$"
>
> Any opinion on whether this should have any namespace prefix (or infix, I guess)
> after "virtio,"?
>
> I previously suggested making it "virtio,device[0-9a-f]{1,4}$", which would
> make it clearer that the following digits are the device ID rather
> than something
> else we might define in the future. Viresh picked this version because it's
> somewhat more consistent with other subsystems.

I'm fine either way, though I do find just a number a bit strange. So
I'd lean toward adding 'device' or even just a 'd'.

BTW, what happens if/when the device protocol is rev'ed? A new DID or
is there a separate revision that's discoverable?

Rob

  reply	other threads:[~2021-07-26 20:36 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-26  4:51 [PATCH V3 0/5] virtio: Add virtio-device bindings Viresh Kumar
2021-07-26  4:51 ` [PATCH V3 1/5] dt-bindings: virtio: Add binding for virtio devices Viresh Kumar
2021-07-26 14:57   ` Rob Herring
2021-07-26 15:53     ` Arnd Bergmann
2021-07-26 20:36       ` Rob Herring [this message]
2021-07-26 21:20         ` Arnd Bergmann
2021-07-27  5:09     ` Viresh Kumar
2021-07-26  4:51 ` [PATCH V3 2/5] dt-bindings: i2c: Add bindings for i2c-virtio Viresh Kumar
2021-07-26  8:06   ` Arnd Bergmann
2021-07-26  8:11     ` Arnd Bergmann
2021-07-26  9:21       ` Viresh Kumar
2021-07-26 15:06   ` Rob Herring
2021-07-26  4:51 ` [PATCH V3 3/5] dt-bindings: gpio: Add bindings for gpio-virtio Viresh Kumar
2021-07-26  8:13   ` Arnd Bergmann
2021-07-26 15:11   ` Rob Herring
2021-07-26  4:51 ` [PATCH V3 4/5] uapi: virtio_ids: Sync ids with specification Viresh Kumar
2021-07-26  4:51 ` [PATCH V3 5/5] virtio: Bind virtio device to device-tree node Viresh Kumar
2021-09-13  9:19   ` Alexey Kardashevskiy
2021-09-13  9:45     ` Michael S. Tsirkin
2021-09-13 10:27       ` Alexey Kardashevskiy
2021-09-13 14:49   ` Guenter Roeck
2021-09-13 16:19     ` Guenter Roeck

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