linux-kernel - Re: [Patch 1/3] dt-bindings: media: ti-vpe: Document VPE driver

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Date:   Tue, 15 Oct 2019 17:29:47 -0500
From:   Rob Herring <robh@...nel.org>
To:     Benoit Parrot <bparrot@...com>
Cc:     Tony Lindgren <tony@...mide.com>, Tero Kristo <t-kristo@...com>,
        linux-omap@...r.kernel.org, linux-media@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [Patch 1/3] dt-bindings: media: ti-vpe: Document VPE driver

On Wed, Oct 09, 2019 at 12:56:26PM -0500, Benoit Parrot wrote:
> Device Tree bindings for the Video Processing Engine (VPE) driver.
> 
> Signed-off-by: Benoit Parrot <bparrot@...com>
> ---
>  .../devicetree/bindings/media/ti-vpe.txt      | 48 +++++++++++++++++++
>  MAINTAINERS                                   |  1 +
>  2 files changed, 49 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/media/ti-vpe.txt

Please convert to DT schema format.

> 
> diff --git a/Documentation/devicetree/bindings/media/ti-vpe.txt b/Documentation/devicetree/bindings/media/ti-vpe.txt
> new file mode 100644
> index 000000000000..b2942fa8c3ea
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/media/ti-vpe.txt
> @@ -0,0 +1,48 @@
> +Texas Instruments DRA7x VIDEO PROCESSING ENGINE (VPE)
> +------------------------------------------------------
> +
> +The Video Processing Engine (VPE) is a key component for image post
> +processing applications. VPE consist of a single memory to memory
> +path which can perform chroma up/down sampling, deinterlacing,
> +scaling and color space conversion.
> +
> +Required properties:
> +- compatible: must be "ti,vpe"

Needs to have SoC specific compatibles.

> +- reg:	physical base address and length of the registers set for the 4
> +	memory regions required;
> +- reg-names: name associated with the memory regions described is <reg>;

The names need to be documented.

> +- interrupts: should contain IRQ line for VPE;
> +
> +Example:
> +
> +	target-module@...010 {                  /* 0x489d0000, ap 27 30.0 */
> +		compatible = "ti,sysc-omap4", "ti,sysc";
> +		reg = <0x1d0010 0x4>;
> +		reg-names = "sysc";
> +		ti,sysc-midle = <SYSC_IDLE_FORCE>,
> +				<SYSC_IDLE_NO>,
> +				<SYSC_IDLE_SMART>;
> +		ti,sysc-sidle = <SYSC_IDLE_FORCE>,
> +				<SYSC_IDLE_NO>,
> +				<SYSC_IDLE_SMART>;
> +		clocks = <&vpe_clkctrl DRA7_VPE_VPE_CLKCTRL 0>;
> +		clock-names = "fck";
> +		#address-cells = <1>;
> +		#size-cells = <1>;
> +		ranges = <0x0 0x1d0000 0x10000>;

All this is outside the scope of this binding.

> +
> +		vpe: vpe@0 {
> +			compatible = "ti,vpe";
> +			reg = <0x0000 0x120>,
> +			      <0x0700 0x80>,
> +			      <0x5700 0x18>,
> +			      <0xd000 0x400>;
> +			reg-names = "vpe_top",
> +				    "sc",
> +				    "csc",
> +				    "vpdma";
> +			interrupts = <GIC_SPI 354 IRQ_TYPE_LEVEL_HIGH>;

> +			#address-cells = <1>;
> +			#size-cells = <0>;

Not documented, nor needed as there are no child nodes.

> +		};
> +	};
> diff --git a/MAINTAINERS b/MAINTAINERS
> index 8598f49fa2c8..63dcda51f8ae 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -16299,6 +16299,7 @@ W:	http://linuxtv.org/
>  Q:	http://patchwork.linuxtv.org/project/linux-media/list/
>  S:	Maintained
>  F:	drivers/media/platform/ti-vpe/
> +F:	Documentation/devicetree/bindings/media/ti-vpe.txt
>  
>  TI WILINK WIRELESS DRIVERS
>  L:	linux-wireless@...r.kernel.org
> -- 
> 2.17.1
>