linux-kernel - Re: [PATCH v2 1/4] dt-bindings: power: Add A523 PPU and PCK600 power controllers

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Message-ID: <175218663372.4188922.16230112848863911974.robh@kernel.org>
Date: Thu, 10 Jul 2025 17:30:34 -0500
From: "Rob Herring (Arm)" <robh@...nel.org>
To: Chen-Yu Tsai <wens@...nel.org>
Cc: Jernej Skrabec <jernej@...nel.org>,
	Andre Przywara <andre.przywara@....com>,
	linux-sunxi@...ts.linux.dev,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org,
	Chen-Yu Tsai <wens@...e.org>, Ulf Hansson <ulf.hansson@...aro.org>,
	devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	Conor Dooley <conor+dt@...nel.org>,
	Samuel Holland <samuel@...lland.org>
Subject: Re: [PATCH v2 1/4] dt-bindings: power: Add A523 PPU and PCK600 power
 controllers


On Wed, 09 Jul 2025 23:53:40 +0800, Chen-Yu Tsai wrote:
> From: Chen-Yu Tsai <wens@...e.org>
> 
> The A523 PPU is likely the same kind of hardware seen on previous SoCs.
> 
> The A523 PCK600, as the name suggests, is likely a customized version
> of ARM's PCK-600 power controller. Comparing the BSP driver against
> ARM's PPU datasheet shows that the basic registers line up, but
> Allwinner's hardware has some additional delay controls in the reserved
> register range. As such it is likely not fully compatible with the
> standard ARM version.
> 
> Document A523 PPU and PCK600 compatibles.
> 
> Also reorder the compatible string entries so they are grouped and
> ordered by family first, then by SoC model.
> 
> Reviewed-by: Andre Przywara <andre.przywara@....com>
> Signed-off-by: Chen-Yu Tsai <wens@...e.org>
> 
> ---
> Changes since v1:
> - Re-order compatible string entries
> - Fix name of header file to match compatible string
> ---
>  .../bindings/power/allwinner,sun20i-d1-ppu.yaml   |  4 +++-
>  .../power/allwinner,sun55i-a523-pck-600.h         | 15 +++++++++++++++
>  .../dt-bindings/power/allwinner,sun55i-a523-ppu.h | 12 ++++++++++++
>  3 files changed, 30 insertions(+), 1 deletion(-)
>  create mode 100644 include/dt-bindings/power/allwinner,sun55i-a523-pck-600.h
>  create mode 100644 include/dt-bindings/power/allwinner,sun55i-a523-ppu.h
> 

Reviewed-by: Rob Herring (Arm) <robh@...nel.org>