linux-kernel - Re: [PATCH] dt-bindings: gpio: fairchild,74hc595: use spi-peripheral-props.yaml

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Date:   Thu, 28 Jul 2022 09:19:59 -0600
From:   Rob Herring <robh@...nel.org>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc:     Maxime Ripard <mripard@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        linux-kernel@...r.kernel.org, linux-gpio@...r.kernel.org,
        devicetree@...r.kernel.org, Bartosz Golaszewski <brgl@...ev.pl>,
        Rob Herring <robh+dt@...nel.org>
Subject: Re: [PATCH] dt-bindings: gpio: fairchild,74hc595: use
 spi-peripheral-props.yaml

On Wed, 27 Jul 2022 18:42:51 +0200, Krzysztof Kozlowski wrote:
> Instead of listing directly properties typical for SPI peripherals,
> reference the spi-peripheral-props.yaml schema.  This allows using all
> properties typical for SPI-connected devices, even these which device
> bindings author did not tried yet.
> 
> Remove the spi-* properties which now come via spi-peripheral-props.yaml
> schema, except for the cases when device schema adds some constraints
> like maximum frequency.
> 
> While changing additionalProperties->unevaluatedProperties, put it in
> typical place, just before example DTS.
> 
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
> 
> ---
> 
> Technically, this depends on [1] merged to SPI tree, if we want to
> preserve existing behavior of not allowing SPI CPHA and CPOL in each of
> schemas in this patch.
> 
> If this patch comes independently via different tree, the SPI CPHA and
> CPOL will be allowed for brief period of time, before [1] is merged.
> This will not have negative impact, just DT schema checks will be
> loosened for that period.
> 
> [1] https://lore.kernel.org/all/20220722191539.90641-2-krzysztof.kozlowski@linaro.org/
> ---
>  .../devicetree/bindings/gpio/fairchild,74hc595.yaml        | 7 ++++---
>  1 file changed, 4 insertions(+), 3 deletions(-)
> 

Acked-by: Rob Herring <robh@...nel.org>