[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date: Fri, 7 Jul 2023 09:27:24 -0600
From: Rob Herring <robh@...nel.org>
To: Oleksii Moisieiev <Oleksii_Moisieiev@...m.com>
Cc: Gatien Chevallier <gatien.chevallier@...s.st.com>,
"gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
"herbert@...dor.apana.org.au" <herbert@...dor.apana.org.au>, "davem@...emloft.net" <davem@...emloft.net>,
"krzysztof.kozlowski+dt@...aro.org" <krzysztof.kozlowski+dt@...aro.org>,
"conor+dt@...nel.org" <conor+dt@...nel.org>,
"alexandre.torgue@...s.st.com" <alexandre.torgue@...s.st.com>, "vkoul@...nel.org" <vkoul@...nel.org>,
"jic23@...nel.org" <jic23@...nel.org>,
"olivier.moysan@...s.st.com" <olivier.moysan@...s.st.com>,
"arnaud.pouliquen@...s.st.com" <arnaud.pouliquen@...s.st.com>, "mchehab@...nel.org" <mchehab@...nel.org>,
"fabrice.gasnier@...s.st.com" <fabrice.gasnier@...s.st.com>,
"andi.shyti@...nel.org" <andi.shyti@...nel.org>, "ulf.hansson@...aro.org" <ulf.hansson@...aro.org>,
"edumazet@...gle.com" <edumazet@...gle.com>, "kuba@...nel.org" <kuba@...nel.org>,
"pabeni@...hat.com" <pabeni@...hat.com>,
"hugues.fruchet@...s.st.com" <hugues.fruchet@...s.st.com>, "lee@...nel.org" <lee@...nel.org>,
"will@...nel.org" <will@...nel.org>, "catalin.marinas@....com" <catalin.marinas@....com>,
"arnd@...nel.org" <arnd@...nel.org>, "richardcochran@...il.com" <richardcochran@...il.com>,
"linux-crypto@...r.kernel.org" <linux-crypto@...r.kernel.org>,
"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
"linux-stm32@...md-mailman.stormreply.com" <linux-stm32@...md-mailman.stormreply.com>,
"linux-arm-kernel@...ts.infradead.org" <linux-arm-kernel@...ts.infradead.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"dmaengine@...r.kernel.org" <dmaengine@...r.kernel.org>,
"linux-i2c@...r.kernel.org" <linux-i2c@...r.kernel.org>,
"linux-iio@...r.kernel.org" <linux-iio@...r.kernel.org>,
"alsa-devel@...a-project.org" <alsa-devel@...a-project.org>,
"linux-media@...r.kernel.org" <linux-media@...r.kernel.org>,
"linux-mmc@...r.kernel.org" <linux-mmc@...r.kernel.org>,
"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
"linux-phy@...ts.infradead.org" <linux-phy@...ts.infradead.org>,
"linux-serial@...r.kernel.org" <linux-serial@...r.kernel.org>,
"linux-spi@...r.kernel.org" <linux-spi@...r.kernel.org>,
"linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>
Subject: Re: [PATCH 04/10] dt-bindings: treewide: add feature-domains
description in binding files
On Fri, Jul 07, 2023 at 02:07:18PM +0000, Oleksii Moisieiev wrote:
>
> Gatien Chevallier <gatien.chevallier@...s.st.com> writes:
>
> > feature-domains is an optional property that allows a peripheral to
> > refer to one or more feature domain controller(s).
> >
> > Description of this property is added to all peripheral binding files of
> > the peripheral under the STM32 firewall controllers. It allows an accurate
> > representation of the hardware, where various peripherals are connected
> > to this firewall bus. The firewall can then check the peripheral accesses
> > before allowing it to probe.
> >
> > Signed-off-by: Gatien Chevallier <gatien.chevallier@...s.st.com>
> > ---
> >
> > Disclaimer: Some error with dtbs_check will be observed as I've
> > considered the property to be generic, as Rob asked
> >
> > Documentation/devicetree/bindings/crypto/st,stm32-hash.yaml | 4 ++++
> > Documentation/devicetree/bindings/dma/st,stm32-dma.yaml | 4 ++++
> > Documentation/devicetree/bindings/dma/st,stm32-dmamux.yaml | 4 ++++
> > Documentation/devicetree/bindings/i2c/st,stm32-i2c.yaml | 4 ++++
> > Documentation/devicetree/bindings/iio/adc/st,stm32-adc.yaml | 4 ++++
> > .../devicetree/bindings/iio/adc/st,stm32-dfsdm-adc.yaml | 4 ++++
> > Documentation/devicetree/bindings/iio/dac/st,stm32-dac.yaml | 4 ++++
> > .../devicetree/bindings/media/cec/st,stm32-cec.yaml | 4 ++++
> > Documentation/devicetree/bindings/media/st,stm32-dcmi.yaml | 4 ++++
> > .../bindings/memory-controllers/st,stm32-fmc2-ebi.yaml | 4 ++++
> > Documentation/devicetree/bindings/mfd/st,stm32-lptimer.yaml | 4 ++++
> > Documentation/devicetree/bindings/mfd/st,stm32-timers.yaml | 5 +++++
> > Documentation/devicetree/bindings/mmc/arm,pl18x.yaml | 4 ++++
> > Documentation/devicetree/bindings/net/stm32-dwmac.yaml | 4 ++++
> > Documentation/devicetree/bindings/phy/phy-stm32-usbphyc.yaml | 4 ++++
> > .../devicetree/bindings/regulator/st,stm32-vrefbuf.yaml | 4 ++++
> > Documentation/devicetree/bindings/rng/st,stm32-rng.yaml | 4 ++++
> > Documentation/devicetree/bindings/serial/st,stm32-uart.yaml | 4 ++++
> > Documentation/devicetree/bindings/sound/st,stm32-i2s.yaml | 4 ++++
> > Documentation/devicetree/bindings/sound/st,stm32-sai.yaml | 4 ++++
> > .../devicetree/bindings/sound/st,stm32-spdifrx.yaml | 4 ++++
> > Documentation/devicetree/bindings/spi/st,stm32-qspi.yaml | 4 ++++
> > Documentation/devicetree/bindings/spi/st,stm32-spi.yaml | 4 ++++
> > Documentation/devicetree/bindings/usb/dwc2.yaml | 4 ++++
> > 24 files changed, 97 insertions(+)
> >
> > diff --git a/Documentation/devicetree/bindings/crypto/st,stm32-hash.yaml b/Documentation/devicetree/bindings/crypto/st,stm32-hash.yaml
> > index b767ec72a999..daf8dcaef627 100644
> > --- a/Documentation/devicetree/bindings/crypto/st,stm32-hash.yaml
> > +++ b/Documentation/devicetree/bindings/crypto/st,stm32-hash.yaml
> > @@ -50,6 +50,10 @@ properties:
> > power-domains:
> > maxItems: 1
> >
> > + feature-domains:
> > + minItems: 1
> > + maxItems: 3
> > +
>
> I beliewe feature-domains is generic binding. This means that maxItems
> can be implementation dependend. I would rather drop maxItems so the
> following format will be possible:
>
> feature-domains = <&etzpc 1>, <&etzpc 2>, <&some_other_domain 1 2 3 4>
> feature-domain-names = "firewall 1", "firewall 2", "other_domain"
The above already allows this (not -names, but the number of entries).
>
> Also I beliewe driver will handle feature-domain-names property so it
> will parse feature-domains only related to the firewall.
Now I'm curious. What's an example that's not a firewall?
(Note I'm still not happy with the naming of 'feature' as anything is a
feature, but that's the least of the issues really.)
Rob
Powered by blists - more mailing lists