From: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
To: Geert Uytterhoeven <geert+renesas@glider.be>,
Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
David Airlie <airlied@linux.ie>, Daniel Vetter <daniel@ffwll.ch>,
Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>
Cc: dri-devel@lists.freedesktop.org,
linux-renesas-soc@vger.kernel.org, devicetree@vger.kernel.org
Subject: Re: [PATCH v5] dt-bindings: display: renesas: du: Document optional reset properties
Date: Fri, 14 Feb 2020 09:35:22 +0000 [thread overview]
Message-ID: <78fd5397-8294-7bc5-de5d-1b71d78a96a4@ideasonboard.com> (raw)
In-Reply-To: <20200214082623.4893-1-geert+renesas@glider.be>
Hi Geert,
On 14/02/2020 08:26, Geert Uytterhoeven wrote:
> Document the optional properties for describing module resets, to
> support resetting display channels on R-Car Gen2 and Gen3.
>
> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
> Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
> ---
> Who's taking this kind of patches?
> V1 was submmitted in March 2017.
Hrm ... presumably through the DRM subsystem trees?
Or just for Laurent to pick up ...
--
KB
>
> v5:
> - Rebase on top of renesas,cmms and renesas,vsps patches,
>
> v4:
> - Use "All but R8A7779" instead of "R8A779[0123456]", to reduce future
> churn,
>
> v3:
> - Add Acked-by,
> - Drop LVDS resets, as LVDS is now covered by a separate binding,
> - Update the example.
>
> v2:
> - s/phandles/phandle/.
> ---
> .../devicetree/bindings/display/renesas,du.txt | 10 ++++++++++
> 1 file changed, 10 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/display/renesas,du.txt b/Documentation/devicetree/bindings/display/renesas,du.txt
> index eb4ae41fe41f83c7..51cd4d1627703a15 100644
> --- a/Documentation/devicetree/bindings/display/renesas,du.txt
> +++ b/Documentation/devicetree/bindings/display/renesas,du.txt
> @@ -50,6 +50,14 @@ Required Properties:
> VSP instance that serves the DU channel, and the channel index identifies
> the LIF instance in that VSP.
>
> +Optional properties:
> + - resets: A list of phandle + reset-specifier pairs, one for each entry in
> + the reset-names property.
> + - reset-names: Names of the resets. This property is model-dependent.
> + - All but R8A7779 use one reset for a group of one or more successive
> + channels. The resets must be named "du.x" with "x" being the numerical
> + index of the lowest channel in the group.
> +
> Required nodes:
>
> The connections to the DU output video ports are modeled using the OF graph
> @@ -96,6 +104,8 @@ Example: R8A7795 (R-Car H3) ES2.0 DU
> <&cpg CPG_MOD 722>,
> <&cpg CPG_MOD 721>;
> clock-names = "du.0", "du.1", "du.2", "du.3";
> + resets = <&cpg 724>, <&cpg 722>;
> + reset-names = "du.0", "du.2";
> renesas,cmms = <&cmm0>, <&cmm1>, <&cmm2>, <&cmm3>;
> renesas,vsps = <&vspd0 0>, <&vspd1 0>, <&vspd2 0>, <&vspd0 1>;
>
>
next prev parent reply other threads:[~2020-02-14 9:35 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-14 8:26 [PATCH v5] dt-bindings: display: renesas: du: Document optional reset properties Geert Uytterhoeven
2020-02-14 9:35 ` Kieran Bingham [this message]
2020-02-19 16:04 ` Laurent Pinchart
2020-02-19 16:36 ` Geert Uytterhoeven
2020-02-19 16:48 ` Laurent Pinchart
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