Re: [PATCH 08/13] dt-bindings: media: ov5640: Remove data-shift

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Hi Jacopo,

(CC'ing Sakari)

Thank you for the patch.

On Fri, Jul 17, 2020 at 03:28:54PM +0200, Jacopo Mondi wrote:
> The value of the data-shift property solely depend on the selected
> bus width and it's not freely configurable.
> 
> Remove it from the bindings document and update its users accordingly.

Hmmmm that's an interesting one. Sakari, what do you think ?

> Signed-off-by: Jacopo Mondi <jacopo+renesas@xxxxxxxxxx>
> ---
>  Documentation/devicetree/bindings/media/i2c/ov5640.yaml | 9 ---------
>  arch/arm/boot/dts/stm32mp157c-ev1.dts                   | 1 -
>  2 files changed, 10 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/media/i2c/ov5640.yaml b/Documentation/devicetree/bindings/media/i2c/ov5640.yaml
> index 5e1662e848bd..ab700a1830aa 100644
> --- a/Documentation/devicetree/bindings/media/i2c/ov5640.yaml
> +++ b/Documentation/devicetree/bindings/media/i2c/ov5640.yaml
> @@ -92,12 +92,6 @@ properties:
>                parallel bus.
>              enum: [8, 10]
> 
> -          data-shift:
> -            description: |
> -              Shall be set to <2> for 8 bits parallel bus (lines 9:2 are used) or
> -              <0> for 10 bits parallel bus.
> -            enum: [0, 2]

Should you document in the description of bus-width that data-shift is
implied ?

> -
>            hsync-active:
>              enum: [0, 1]
> 
> @@ -115,7 +109,6 @@ properties:
>              then:
>                  properties:
>                    bus-width: false
> -                  data-shift: false
>                    hsync-active: false
>                    vsync-active: false
>                    pclk-sample: false
> @@ -135,7 +128,6 @@ properties:
>                  - remote-endpoint
>                  - bus-type
>                  - bus-width
> -                - data-shift
>                  - hsync-active
>                  - vsync-active
>                  - pclk-sample
> @@ -204,7 +196,6 @@ examples:
>                      remote-endpoint = <&parallel_from_ov5640>;
>                      bus-type = <5>;
>                      bus-width = <10>;
> -                    data-shift = <0>;
>                      hsync-active = <1>;
>                      vsync-active = <1>;
>                      pclk-sample = <1>;
> diff --git a/arch/arm/boot/dts/stm32mp157c-ev1.dts b/arch/arm/boot/dts/stm32mp157c-ev1.dts
> index 613ede73b65b..96f96202ca63 100644
> --- a/arch/arm/boot/dts/stm32mp157c-ev1.dts
> +++ b/arch/arm/boot/dts/stm32mp157c-ev1.dts
> @@ -192,7 +192,6 @@ ov5640_0: endpoint {
>  				remote-endpoint = <&dcmi_0>;
>  				bus-type = <5>;
>  				bus-width = <8>;
> -				data-shift = <2>; /* lines 9:2 are used */
>  				hsync-active = <0>;
>  				vsync-active = <0>;
>  				pclk-sample = <1>;

-- 
Regards,

Laurent Pinchart



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