linux-kernel - Re: [RESEND][PATCH 1/4] of: platform: populate /firmware/ node from of_platform_default_populate

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Message-ID: <52ed3abb-6b05-89c9-5ab4-31b37ffa1db9@arm.com>
Date:   Mon, 23 Oct 2017 16:59:54 +0100
From:   Sudeep Holla <sudeep.holla@....com>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     Rob Herring <robh@...nel.org>, Sudeep Holla <sudeep.holla@....com>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        Frank Rowand <frowand.list@...il.com>
Subject: Re: [RESEND][PATCH 1/4] of: platform: populate /firmware/ node from
 of_platform_default_populate_init()

Hi Arnd,

On 17/10/17 14:02, Rob Herring wrote:
> On Thu, Sep 28, 2017 at 5:45 AM, Sudeep Holla <sudeep.holla@....com> wrote:
>> Since "/firmware" does not have its own "compatible" property as it's
>> just collection of nodes representing firmware interface, it's sub-nodes
>> are not populated during system initialization.
>>
>> Currently different firmware drivers search the /firmware/ node and
>> populate the sub-node devices selectively. Instead we can populate
>> the /firmware/ node during init to avoid more drivers continuing to
>> populate the devices selectively.
>>
>> To generalize the solution this patch populates the /firmware/ node
>> explicitly from of_platform_default_populate_init().
>>

You had concernsin the past and I mentioned that firmware interface to
user-space *has* to continue in /sys/firmware, but he platform_device
management is internal to kernel.

Can we proceed with this change at-least for qcom and meson firmware
which are platform device already ? I can drop optee related changes.

-- 
Regards,
Sudeep