linux-kernel - Re: [PATCH v3 1/6] dt-bindings: dsp: fsl,dsp: fix power domain count

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Message-ID: <xx7n7gubb376mreajyux2kzjj56cg3kkokb54pssqexi7b6rlu@4kcgl4gb2wr3>
Date: Mon, 14 Oct 2024 09:14:17 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Laurentiu Mihalcea <laurentiumihalcea111@...il.com>
Cc: Rob Herring <robh@...nel.org>, 
	Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, 
	Shawn Guo <shawnguo@...nel.org>, Sascha Hauer <s.hauer@...gutronix.de>, 
	Daniel Baluta <daniel.baluta@....com>, Shengjiu Wang <shengjiu.wang@....com>, 
	Iuliana Prodan <iuliana.prodan@....com>, Tushar Khandelwal <Tushar.Khandelwal@....com>, 
	Viresh Kumar <viresh.kumar@...aro.org>, Frank Li <Frank.li@....com>, devicetree@...r.kernel.org, 
	linux-kernel@...r.kernel.org, imx@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v3 1/6] dt-bindings: dsp: fsl,dsp: fix power domain count

On Fri, Oct 11, 2024 at 11:04:34AM -0400, Laurentiu Mihalcea wrote:
> From: Laurentiu Mihalcea <laurentiu.mihalcea@....com>
> 
> Per the current binding, QM/QXP DSPs are supposed to have 4
> power domains, while the rest just 1. For QM/QXP, the 4 power
> domains are: DSP, DSP_RAM, MU13A, MU13B.
> 
> First off, drop MU13A from the count as its already attached
> to lsio_mu13. This decreases the count to 3.
> 
> Secondly, drop DSP and DSP_RAM from the count for QXP. These
> are already attached to the DSP's LPCGs.
> 
> Thirdly, a new power domain is required for DSP-SCU communication
> (MU2A). With this in mind, the number of required power domains
> for QXP is 2 (MU2A, MU13B), while for QM it's 4 (MU13B, DSP,
> DSP_RAM, MU2A).
> 
> Update the fsl,dsp binding to reflect all of this information.
> Since the arm,mhuv2 binding has an example node using the
> fsl,imx8qxp-dsp compatible, remove two of the extra PDs to
> align with the required power domain count.
> 
> Signed-off-by: Laurentiu Mihalcea <laurentiu.mihalcea@....com>

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>

Best regards,
Krzysztof