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Message-ID: <20220731115955.1977f429@jic23-huawei>
Date: Sun, 31 Jul 2022 11:59:55 +0100
From: Jonathan Cameron <jic23@...nel.org>
To: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc: Thierry Reding <thierry.reding@...il.com>,
Sam Ravnborg <sam@...nborg.org>,
David Airlie <airlied@...ux.ie>,
Daniel Vetter <daniel@...ll.ch>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Mark Brown <broonie@...nel.org>,
Tomi Valkeinen <tomi.valkeinen@...com>,
Andrzej Hajda <andrzej.hajda@...el.com>,
Maxime Ripard <mripard@...nel.org>,
Marek Belisko <marek@...delico.com>,
"H. Nikolaus Schaller" <hns@...delico.com>,
Pratyush Yadav <p.yadav@...com>,
dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-spi@...r.kernel.org,
Rob Herring <robh@...nel.org>
Subject: Re: [PATCH v2 1/1] spi/panel: dt-bindings: drop CPHA and CPOL from
common properties
On Fri, 22 Jul 2022 21:15:39 +0200
Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org> wrote:
> The spi-cpha and spi-cpol properties are device specific and should be
> accepted only if device really needs them. Drop them from common
> spi-peripheral-props.yaml schema, mention in few panel drivers which use
> them and include instead in the SPI controller bindings. The controller
> bindings will provide CPHA/CPOL type validation and one place for
> description. Each device schema must list the properties if they are
> applicable.
>
> Suggested-by: Jonathan Cameron <jic23@...nel.org>
> Suggested-by: Rob Herring <robh@...nel.org>
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
This seems like a good solution to me.
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@...wei.com>
> ---
> .../bindings/display/panel/lgphilips,lb035q02.yaml | 3 +++
> .../bindings/display/panel/samsung,ld9040.yaml | 3 +++
> .../bindings/display/panel/sitronix,st7789v.yaml | 3 +++
> .../devicetree/bindings/display/panel/tpo,td.yaml | 3 +++
> .../devicetree/bindings/spi/spi-controller.yaml | 11 +++++++++++
> .../devicetree/bindings/spi/spi-peripheral-props.yaml | 10 ----------
> 6 files changed, 23 insertions(+), 10 deletions(-)
>
> diff --git a/Documentation/devicetree/bindings/display/panel/lgphilips,lb035q02.yaml b/Documentation/devicetree/bindings/display/panel/lgphilips,lb035q02.yaml
> index 5e4e0e552c2f..628c4b898111 100644
> --- a/Documentation/devicetree/bindings/display/panel/lgphilips,lb035q02.yaml
> +++ b/Documentation/devicetree/bindings/display/panel/lgphilips,lb035q02.yaml
> @@ -21,6 +21,9 @@ properties:
> enable-gpios: true
> port: true
>
> + spi-cpha: true
> + spi-cpol: true
> +
> required:
> - compatible
> - enable-gpios
> diff --git a/Documentation/devicetree/bindings/display/panel/samsung,ld9040.yaml b/Documentation/devicetree/bindings/display/panel/samsung,ld9040.yaml
> index d525165d6d63..c0fabeb38628 100644
> --- a/Documentation/devicetree/bindings/display/panel/samsung,ld9040.yaml
> +++ b/Documentation/devicetree/bindings/display/panel/samsung,ld9040.yaml
> @@ -42,6 +42,9 @@ properties:
> panel-height-mm:
> description: physical panel height [mm]
>
> + spi-cpha: true
> + spi-cpol: true
> +
> required:
> - compatible
> - reg
> diff --git a/Documentation/devicetree/bindings/display/panel/sitronix,st7789v.yaml b/Documentation/devicetree/bindings/display/panel/sitronix,st7789v.yaml
> index 9e1d707c2ace..d984b59daa4a 100644
> --- a/Documentation/devicetree/bindings/display/panel/sitronix,st7789v.yaml
> +++ b/Documentation/devicetree/bindings/display/panel/sitronix,st7789v.yaml
> @@ -23,6 +23,9 @@ properties:
> backlight: true
> port: true
>
> + spi-cpha: true
> + spi-cpol: true
> +
> required:
> - compatible
> - reg
> diff --git a/Documentation/devicetree/bindings/display/panel/tpo,td.yaml b/Documentation/devicetree/bindings/display/panel/tpo,td.yaml
> index f902a9d74141..e8c8ee8d7c88 100644
> --- a/Documentation/devicetree/bindings/display/panel/tpo,td.yaml
> +++ b/Documentation/devicetree/bindings/display/panel/tpo,td.yaml
> @@ -28,6 +28,9 @@ properties:
> backlight: true
> port: true
>
> + spi-cpha: true
> + spi-cpol: true
> +
> required:
> - compatible
> - port
> diff --git a/Documentation/devicetree/bindings/spi/spi-controller.yaml b/Documentation/devicetree/bindings/spi/spi-controller.yaml
> index 678cee68b52a..655713fba7e2 100644
> --- a/Documentation/devicetree/bindings/spi/spi-controller.yaml
> +++ b/Documentation/devicetree/bindings/spi/spi-controller.yaml
> @@ -95,6 +95,17 @@ patternProperties:
> type: object
> $ref: spi-peripheral-props.yaml
>
> + properties:
> + spi-cpha:
> + $ref: /schemas/types.yaml#/definitions/flag
> + description:
> + The device requires shifted clock phase (CPHA) mode.
> +
> + spi-cpol:
> + $ref: /schemas/types.yaml#/definitions/flag
> + description:
> + The device requires inverse clock polarity (CPOL) mode.
> +
> required:
> - compatible
> - reg
> diff --git a/Documentation/devicetree/bindings/spi/spi-peripheral-props.yaml b/Documentation/devicetree/bindings/spi/spi-peripheral-props.yaml
> index 5e32928c4fc3..2349f83c07f3 100644
> --- a/Documentation/devicetree/bindings/spi/spi-peripheral-props.yaml
> +++ b/Documentation/devicetree/bindings/spi/spi-peripheral-props.yaml
> @@ -34,16 +34,6 @@ properties:
> description:
> The device requires 3-wire mode.
>
> - spi-cpha:
> - $ref: /schemas/types.yaml#/definitions/flag
> - description:
> - The device requires shifted clock phase (CPHA) mode.
> -
> - spi-cpol:
> - $ref: /schemas/types.yaml#/definitions/flag
> - description:
> - The device requires inverse clock polarity (CPOL) mode.
> -
> spi-cs-high:
> $ref: /schemas/types.yaml#/definitions/flag
> description:
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