linux-kernel.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: Elliot Berman <quic_eberman@quicinc.com>
Cc: Bjorn Andersson <quic_bjorande@quicinc.com>,
	Murali Nalajala <quic_mnalajal@quicinc.com>,
	Trilok Soni <quic_tsoni@quicinc.com>,
	Srivatsa Vaddagiri <quic_svaddagi@quicinc.com>,
	Carl van Schaik <quic_cvanscha@quicinc.com>,
	Andy Gross <agross@kernel.org>,
	Dmitry Baryshkov <dmitry.baryshkov@linaro.org>,
	Jassi Brar <jassisinghbrar@gmail.com>,
	linux-arm-kernel@lists.infradead.org,
	Mark Rutland <mark.rutland@arm.com>,
	Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
	Sudeep Holla <sudeep.holla@arm.com>,
	Marc Zyngier <maz@kernel.org>, Rob Herring <robh+dt@kernel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
	Jonathan Corbet <corbet@lwn.net>, Will Deacon <will@kernel.org>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Arnd Bergmann <arnd@arndb.de>,
	devicetree@vger.kernel.org, linux-doc@vger.kernel.org,
	linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v4 13/14] gunyah: rsc_mgr: Add auxiliary devices for console
Date: Wed, 5 Oct 2022 08:21:55 +0200	[thread overview]
Message-ID: <Yz0ig/Dnp4ovHjeN@kroah.com> (raw)
In-Reply-To: <1db27cda-356e-bae2-3c6a-b7916123a269@quicinc.com>

On Tue, Oct 04, 2022 at 04:49:27PM -0700, Elliot Berman wrote:
> On 9/30/2022 5:19 AM, Greg Kroah-Hartman wrote:
> > On Wed, Sep 28, 2022 at 12:56:32PM -0700, Elliot Berman wrote:
> > > Gunyah resource manager exposes a concrete functionalities which
> > > complicate a single resource manager driver.
> > 
> > I am sorry, but I do not understand this sentance.  What is so
> > complicated about individual devices being created?  Where are they
> > created?  What bus?
> 
> There's no complexity here with using individual devices, that's why I
> wanted to create secondary (auxiliary devices).
> 
> IOW -- "I have a platform device that does a lot of different things. Split
> up the different functionalities of that device into sub devices using the
> auxiliary bus."

Why not just have multiple platform devices?  You control them, don't
make it more complex than it should be.

And why are these platform devices at all?

As you say:

> A key requirement for utilizing the auxiliary bus is that there is no
> dependency on a physical bus, device, register accesses or regmap support.
> These individual devices split from the core cannot live on the platform bus
> as they are not physical devices that are controlled by DT/ACPI.

These are not in the DT.  So just make your own bus for them instead of
using a platform device.  Don't abuse a platform device please.

thanks,

greg k-h

  reply	other threads:[~2022-10-05  6:21 UTC|newest]

Thread overview: 51+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-09-28 19:56 [PATCH v4 00/14] Drivers for gunyah hypervisor Elliot Berman
2022-09-28 19:56 ` [PATCH v4 01/14] docs: gunyah: Introduce Gunyah Hypervisor Elliot Berman
2022-09-29  3:43   ` Bagas Sanjaya
2022-09-29  4:02     ` Elliot Berman
2022-09-28 19:56 ` [PATCH v4 02/14] dt-bindings: Add binding for gunyah hypervisor Elliot Berman
2022-09-28 19:56 ` [PATCH v4 03/14] gunyah: Common types and error codes for Gunyah hypercalls Elliot Berman
2022-09-28 19:56 ` [PATCH v4 04/14] arm64: smccc: Include alternative-macros.h Elliot Berman
2022-09-28 19:56 ` [PATCH v4 05/14] virt: gunyah: Add hypercalls to identify Gunyah Elliot Berman
2022-09-28 19:56 ` [PATCH v4 06/14] virt: gunyah: Add sysfs nodes Elliot Berman
2022-09-30 12:09   ` Greg Kroah-Hartman
2022-10-04 23:50     ` Elliot Berman
2022-10-05  6:23       ` Greg Kroah-Hartman
2022-09-28 19:56 ` [PATCH v4 07/14] mailbox: Allow direct registration to a channel Elliot Berman
2022-09-28 19:56 ` [PATCH v4 08/14] virt: gunyah: msgq: Add hypercalls to send and receive messages Elliot Berman
2022-09-28 19:56 ` [PATCH v4 09/14] mailbox: Add Gunyah message queue mailbox Elliot Berman
2022-09-29 16:59   ` Bjorn Andersson
2022-09-29 17:37     ` Jassi Brar
2022-09-28 19:56 ` [PATCH v4 10/14] gunyah: sysfs: Add node to describe supported features Elliot Berman
2022-09-29  7:36   ` Joe Perches
2022-09-29 20:47     ` Elliot Berman
2022-10-02 23:30     ` Jeff Johnson
2022-10-02 23:58       ` Joe Perches
2022-09-30 12:06   ` Greg Kroah-Hartman
2022-10-04 23:53     ` Elliot Berman
2022-09-28 19:56 ` [PATCH v4 11/14] gunyah: rsc_mgr: Add resource manager RPC core Elliot Berman
2022-09-28 19:56 ` [PATCH v4 12/14] gunyah: rsc_mgr: Add RPC for console services Elliot Berman
2022-09-30 12:22   ` Greg Kroah-Hartman
2022-10-03  1:46     ` new checkpatch flexible array test ? (was Re: [PATCH v4 12/14] gunyah: rsc_mgr: Add RPC for console services) Joe Perches
2022-10-03  5:29       ` Greg Kroah-Hartman
2022-10-03  5:38         ` Joe Perches
2022-10-31 18:23           ` Gustavo A. R. Silva
2022-09-28 19:56 ` [PATCH v4 13/14] gunyah: rsc_mgr: Add auxiliary devices for console Elliot Berman
2022-09-30 12:19   ` Greg Kroah-Hartman
2022-10-04 23:49     ` Elliot Berman
2022-10-05  6:21       ` Greg Kroah-Hartman [this message]
2022-10-05 21:47         ` Elliot Berman
2022-10-06  6:28           ` Greg Kroah-Hartman
2022-09-28 19:56 ` [PATCH v4 14/14] tty: gunyah: Add tty console driver for RM Console Services Elliot Berman
2022-09-30 12:17   ` Greg Kroah-Hartman
2022-10-07  5:59     ` Elliot Berman
2022-10-07  7:40       ` Greg Kroah-Hartman
2022-10-09 20:59         ` Elliot Berman
2022-10-10 20:23           ` Greg Kroah-Hartman
2022-10-10 20:58             ` Elliot Berman
2022-10-11  6:22               ` Greg Kroah-Hartman
2022-10-11 22:04                 ` Elliot Berman
2022-10-12  6:53                   ` Greg Kroah-Hartman
2022-10-08  7:41     ` Zhou Furong
2022-10-08  9:52       ` Greg Kroah-Hartman
2022-10-03  7:01   ` Jiri Slaby
2022-10-10 18:06     ` Elliot Berman

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=Yz0ig/Dnp4ovHjeN@kroah.com \
    --to=gregkh@linuxfoundation.org \
    --cc=agross@kernel.org \
    --cc=arnd@arndb.de \
    --cc=catalin.marinas@arm.com \
    --cc=corbet@lwn.net \
    --cc=devicetree@vger.kernel.org \
    --cc=dmitry.baryshkov@linaro.org \
    --cc=jassisinghbrar@gmail.com \
    --cc=krzysztof.kozlowski+dt@linaro.org \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-arm-msm@vger.kernel.org \
    --cc=linux-doc@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=lorenzo.pieralisi@arm.com \
    --cc=mark.rutland@arm.com \
    --cc=maz@kernel.org \
    --cc=quic_bjorande@quicinc.com \
    --cc=quic_cvanscha@quicinc.com \
    --cc=quic_eberman@quicinc.com \
    --cc=quic_mnalajal@quicinc.com \
    --cc=quic_svaddagi@quicinc.com \
    --cc=quic_tsoni@quicinc.com \
    --cc=robh+dt@kernel.org \
    --cc=sudeep.holla@arm.com \
    --cc=will@kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).