From: Stephan Gerhold <stephan@gerhold.net>
To: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Cc: Bongsu Jeon <bongsu.jeon@samsung.com>,
"David S. Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>,
Rob Herring <robh+dt@kernel.org>,
linux-nfc@lists.01.org, netdev@vger.kernel.org,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
~postmarketos/upstreaming@lists.sr.ht
Subject: Re: [linux-nfc] Re: [PATCH 2/2] nfc: s3fwrn5: i2c: Enable optional clock from device tree
Date: Thu, 20 May 2021 09:41:31 +0200 [thread overview]
Message-ID: <YKYSq5WTeZyMIZYn@gerhold.net> (raw)
In-Reply-To: <10b3a50e-877c-d5b1-3e35-e5dff4ef53d8@canonical.com>
On Wed, May 19, 2021 at 11:58:38AM -0400, Krzysztof Kozlowski wrote:
> >
> > Personally, I just skip all firmware/RF configuration (which works thanks
> > to commit 4fb7b98c7be3 ("nfc: s3fwrn5: skip the NFC bootloader mode")).
> > That way, S3FWRN5 just continues using the proper configuration
> > that was loaded by the vendor drivers at some point. :)
>
> But isn't that configuration lost after power off?
>
I don't know exactly but I don't think it's lost. At least the firmware
and rfreg configuration seem to be preserved since I've never provided
the driver with the necessary firmware. It just works without :)
Stephan
WARNING: multiple messages have this Message-ID (diff)
From: Stephan Gerhold <stephan@gerhold.net>
To: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Cc: Bongsu Jeon <bongsu.jeon@samsung.com>,
"David S. Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>,
Rob Herring <robh+dt@kernel.org>,
linux-nfc@lists.01.org, netdev@vger.kernel.org,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
~postmarketos/upstreaming@lists.sr.ht
Subject: [linux-nfc] Re: [PATCH 2/2] nfc: s3fwrn5: i2c: Enable optional clock from device tree
Date: Thu, 20 May 2021 09:41:31 +0200 [thread overview]
Message-ID: <YKYSq5WTeZyMIZYn@gerhold.net> (raw)
In-Reply-To: <10b3a50e-877c-d5b1-3e35-e5dff4ef53d8@canonical.com>
On Wed, May 19, 2021 at 11:58:38AM -0400, Krzysztof Kozlowski wrote:
> >
> > Personally, I just skip all firmware/RF configuration (which works thanks
> > to commit 4fb7b98c7be3 ("nfc: s3fwrn5: skip the NFC bootloader mode")).
> > That way, S3FWRN5 just continues using the proper configuration
> > that was loaded by the vendor drivers at some point. :)
>
> But isn't that configuration lost after power off?
>
I don't know exactly but I don't think it's lost. At least the firmware
and rfreg configuration seem to be preserved since I've never provided
the driver with the necessary firmware. It just works without :)
Stephan
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WARNING: multiple messages have this Message-ID (diff)
From: Stephan Gerhold <stephan@gerhold.net>
To: linux-nfc@lists.01.org
Subject: Re: [PATCH 2/2] nfc: s3fwrn5: i2c: Enable optional clock from device tree
Date: Thu, 20 May 2021 09:41:31 +0200 [thread overview]
Message-ID: <YKYSq5WTeZyMIZYn@gerhold.net> (raw)
In-Reply-To: <10b3a50e-877c-d5b1-3e35-e5dff4ef53d8@canonical.com>
[-- Attachment #1: Type: text/plain, Size: 646 bytes --]
On Wed, May 19, 2021 at 11:58:38AM -0400, Krzysztof Kozlowski wrote:
> >
> > Personally, I just skip all firmware/RF configuration (which works thanks
> > to commit 4fb7b98c7be3 ("nfc: s3fwrn5: skip the NFC bootloader mode")).
> > That way, S3FWRN5 just continues using the proper configuration
> > that was loaded by the vendor drivers at some point. :)
>
> But isn't that configuration lost after power off?
>
I don't know exactly but I don't think it's lost. At least the firmware
and rfreg configuration seem to be preserved since I've never provided
the driver with the necessary firmware. It just works without :)
Stephan
next prev parent reply other threads:[~2021-05-20 7:41 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-18 13:39 [PATCH 1/2] dt-bindings: net: nfc: s3fwrn5: Add optional clock Stephan Gerhold
2021-05-18 13:39 ` Stephan Gerhold
2021-05-18 13:39 ` [linux-nfc] " Stephan Gerhold
2021-05-18 13:39 ` [PATCH 2/2] nfc: s3fwrn5: i2c: Enable optional clock from device tree Stephan Gerhold
2021-05-18 13:39 ` Stephan Gerhold
2021-05-18 13:39 ` [linux-nfc] " Stephan Gerhold
2021-05-18 14:30 ` Krzysztof Kozlowski
2021-05-18 14:30 ` Krzysztof Kozlowski
2021-05-18 14:30 ` [linux-nfc] " Krzysztof Kozlowski
2021-05-18 15:00 ` [linux-nfc] " Stephan Gerhold
2021-05-18 15:00 ` Stephan Gerhold
2021-05-18 15:00 ` [linux-nfc] " Stephan Gerhold
2021-05-18 15:25 ` Krzysztof Kozlowski
2021-05-18 15:25 ` Krzysztof Kozlowski
2021-05-18 15:25 ` [linux-nfc] " Krzysztof Kozlowski
2021-05-18 15:37 ` Stephan Gerhold
2021-05-18 15:37 ` Stephan Gerhold
2021-05-18 15:37 ` [linux-nfc] " Stephan Gerhold
2021-05-19 8:07 ` Stephan Gerhold
2021-05-19 8:07 ` Stephan Gerhold
2021-05-19 8:07 ` [linux-nfc] " Stephan Gerhold
2021-05-19 15:58 ` Krzysztof Kozlowski
2021-05-19 15:58 ` Krzysztof Kozlowski
2021-05-19 15:58 ` [linux-nfc] " Krzysztof Kozlowski
2021-05-20 7:41 ` Stephan Gerhold [this message]
2021-05-20 7:41 ` Stephan Gerhold
2021-05-20 7:41 ` [linux-nfc] " Stephan Gerhold
2021-05-20 11:40 ` Bongsu Jeon
2021-05-20 11:40 ` Bongsu Jeon
2021-05-20 11:40 ` [linux-nfc] " Bongsu Jeon
2021-05-21 15:02 ` Krzysztof Kozlowski
2021-05-21 15:02 ` Krzysztof Kozlowski
2021-05-21 15:02 ` [linux-nfc] " Krzysztof Kozlowski
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