linux-kernel - Re: [PATCH 1/2] spi: dt-bindings: amlogic, meson-gx-spicc: Add pinctrl names for SPI signal states

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Date:   Tue, 27 Sep 2022 10:29:58 +0200
From:   Neil Armstrong <neil.armstrong@...aro.org>
To:     Amjad Ouled-Ameur <aouledameur@...libre.com>, broonie@...nel.org
Cc:     linux-kernel@...r.kernel.org, linux-amlogic@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-spi@...r.kernel.org,
        narmstrong@...libre.com, Da Xue <da@...re.computer>
Subject: Re: [PATCH 1/2] spi: dt-bindings: amlogic, meson-gx-spicc: Add
 pinctrl names for SPI signal states

Hi,

On 09/08/2022 19:20, Amjad Ouled-Ameur wrote:
> SPI pins of the SPICC Controller in Meson-GX needs to be controlled by
> pin biais when idle. Therefore define three pinctrl names:
> - default: SPI pins are controlled by spi function.
> - idle-high: SCLK pin is pulled-up, but MOSI/MISO are still controlled
> by spi function.
> - idle-low: SCLK pin is pulled-down, but MOSI/MISO are still controlled
> by spi function.
> 
> Reported-by: Da Xue <da@...re.computer>
> Signed-off-by: Neil Armstrong <narmstrong@...libre.com>
> Signed-off-by: Amjad Ouled-Ameur <aouledameur@...libre.com>

Don't forget to CC devicetree@...r.kernel.org otherwise it won't be reviewed.

> ---
>   .../bindings/spi/amlogic,meson-gx-spicc.yaml      | 15 +++++++++++++++
>   1 file changed, 15 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/spi/amlogic,meson-gx-spicc.yaml b/Documentation/devicetree/bindings/spi/amlogic,meson-gx-spicc.yaml
> index 50de0da42c13..10707a8216f5 100644
> --- a/Documentation/devicetree/bindings/spi/amlogic,meson-gx-spicc.yaml
> +++ b/Documentation/devicetree/bindings/spi/amlogic,meson-gx-spicc.yaml
> @@ -43,6 +43,14 @@ properties:
>       minItems: 1
>       maxItems: 2
>   
> +  pinctrl-0:
> +    minItems: 1
> +
> +  pinctrl-1:
> +    maxItems: 1
> +
> +  pinctrl-names: true
> +
>   if:
>     properties:
>       compatible:
> @@ -69,6 +77,13 @@ else:
>         items:
>           - const: core
>   
> +    pinctrl-names:
> +      minItems: 1
> +      items:
> +        - const: default
> +        - const: idle-high
> +        - const: idle-low
> +
>   required:
>     - compatible
>     - reg