[PATCH 1/2] dt-bindings: drm: bridge: adi,adv7533: Document adi,disable-lanes-override property

Biju Das biju.das.jz at bp.renesas.com
Mon Apr 10 16:24:51 UTC 2023


Hi All,

I would like to drop this patch as[1] and [2] fixes the issue

[1] https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/drivers/gpu/drm/bridge/adv7511/adv7533.c?h=next-20230406&id=9a0cdcd6649b76f0b7ceec0e55b0a718321e34d3

[2] https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/drivers/gpu/drm/bridge/adv7511/adv7533.c?h=next-20230406&id=ee0285e13455fdbce5de315bdbe91b5f198a2a06

Cheers,
Biju


> -----Original Message-----
> From: Biju Das <biju.das.jz at bp.renesas.com>
> Sent: Wednesday, March 9, 2022 3:11 PM
> To: David Airlie <airlied at linux.ie>; Daniel Vetter <daniel at ffwll.ch>; Rob
> Herring <robh+dt at kernel.org>
> Cc: Biju Das <biju.das.jz at bp.renesas.com>; Ricardo Cañuelo
> <ricardo.canuelo at collabora.com>; Laurent Pinchart
> <laurent.pinchart at ideasonboard.com>; dri-devel at lists.freedesktop.org;
> devicetree at vger.kernel.org; Geert Uytterhoeven <geert+renesas at glider.be>;
> Chris Paterson <Chris.Paterson2 at renesas.com>; Biju Das
> <biju.das at bp.renesas.com>; Prabhakar Mahadev Lad <prabhakar.mahadev-
> lad.rj at bp.renesas.com>; linux-renesas-soc at vger.kernel.org
> Subject: [PATCH 1/2] dt-bindings: drm: bridge: adi,adv7533: Document
> adi,disable-lanes-override property
> 
> On Renesas RZ/{G2L,V2L} platforms changing the lanes from 4 to 3 at lower
> frequencies causes display instability. On such platforms, it is better to
> avoid switching lanes from 4 to 3 as it needs different set of PLL parameter
> constraints to make the display stable with 3 lanes.
> 
> This patch introduces 'adi,disable-lanes-override' property to disable lane
> switching at lower frequencies.
> 
> Signed-off-by: Biju Das <biju.das.jz at bp.renesas.com>
> Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj at bp.renesas.com>
> ---
>  .../devicetree/bindings/display/bridge/adi,adv7533.yaml      | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git
> a/Documentation/devicetree/bindings/display/bridge/adi,adv7533.yaml
> b/Documentation/devicetree/bindings/display/bridge/adi,adv7533.yaml
> index f36209137c8a..2dc378039d21 100644
> --- a/Documentation/devicetree/bindings/display/bridge/adi,adv7533.yaml
> +++ b/Documentation/devicetree/bindings/display/bridge/adi,adv7533.yaml
> @@ -84,6 +84,11 @@ properties:
>        timings for HDMI output.
>      type: boolean
> 
> +  adi,disable-lanes-override:
> +    description:
> +      Disables the overriding lanes at lower frequencies.
> +    type: boolean
> +
>    adi,dsi-lanes:
>      description: Number of DSI data lanes connected to the DSI host.
>      $ref: /schemas/types.yaml#/definitions/uint32
> --
> 2.17.1



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