linux-kernel - Re: [PATCH v2 3/4] arm64: dts: allwinner: h6: Add GPU OPP table

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Message-ID: <873b8e79-9f68-027a-5c46-153c6a9e62b1@sholland.org>
Date:   Mon, 22 Aug 2022 22:13:43 -0500
From:   Samuel Holland <samuel@...lland.org>
To:     Clément Péron <peron.clem@...il.com>,
        Chen-Yu Tsai <wens@...e.org>,
        Jernej Skrabec <jernej.skrabec@...il.com>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-sunxi@...ts.linux.dev, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 3/4] arm64: dts: allwinner: h6: Add GPU OPP table

On 8/21/22 12:30 PM, Clément Péron wrote:
> Add an Operating Performance Points table for the GPU to
> enable Dynamic Voltage & Frequency Scaling on the H6.
> 
> The voltage range is set with minival voltage set to the target
> and the maximal voltage set to 1.2V. This allow DVFS framework to
> work properly on board with fixed regulator.
> 
> Signed-off-by: Clément Péron <peron.clem@...il.com>
> ---
>  .../boot/dts/allwinner/sun50i-h6-gpu-opp.dtsi | 88 +++++++++++++++++++
>  1 file changed, 88 insertions(+)
>  create mode 100644 arch/arm64/boot/dts/allwinner/sun50i-h6-gpu-opp.dtsi
> 
> diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h6-gpu-opp.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-h6-gpu-opp.dtsi
> new file mode 100644
> index 000000000000..a66204243515
> --- /dev/null
> +++ b/arch/arm64/boot/dts/allwinner/sun50i-h6-gpu-opp.dtsi
> @@ -0,0 +1,88 @@
> +// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
> +// Copyright (C) 2022 Clément Péron <peron.clem@...il.com>
> +
> +/ {
> +	gpu_opp_table: gpu-opp-table {
> +		compatible = "operating-points-v2";
> +
> +		opp@...000000 {

Please fix the `make dtbs_check` warnings:

arch/arm64/boot/dts/allwinner/sun50i-h6-beelink-gs1.dtb: gpu-opp-table:
$nodename:0: 'gpu-opp-table' does not match '^opp-table(-[a-z0-9]+)?$'
        From schema: Documentation/devicetree/bindings/opp/opp-v2.yaml
arch/arm64/boot/dts/allwinner/sun50i-h6-beelink-gs1.dtb: gpu-opp-table:
Unevaluated properties are not allowed ('opp@...000000', 'opp@...000000',
'opp@...000000', 'opp@...000000', 'opp@...000000', 'opp@...000000',
'opp@...000000', 'opp@...000000', 'opp@...000000', 'opp@...000000',
'opp@...000000', 'opp@...000000', 'opp@...000000', 'opp@...000000',
'opp@...000000' were unexpected)
        From schema: Documentation/devicetree/bindings/opp/opp-v2.yaml

Regards,
Samuel