linux-kernel - Re: [PATCH v4 2/7] dt-bindings: interconnect: Add MediaTek EMI Interconnect bindings

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Message-ID: <171379262174.1121504.1745329422512464486.robh@kernel.org>
Date: Mon, 22 Apr 2024 08:30:24 -0500
From: Rob Herring <robh@...nel.org>
To: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
Cc: conor+dt@...nel.org, matthias.bgg@...il.com, gustavoars@...nel.org,
	henryc.chen@...iatek.com, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org, broonie@...nel.org,
	linux-mediatek@...ts.infradead.org,
	krzysztof.kozlowski+dt@...aro.org, kernel@...labora.com,
	keescook@...omium.org, wenst@...omium.org, djakov@...nel.org,
	amergnat@...libre.com, lgirdwood@...il.com,
	devicetree@...r.kernel.org, linux-pm@...r.kernel.org
Subject: Re: [PATCH v4 2/7] dt-bindings: interconnect: Add MediaTek EMI
 Interconnect bindings


On Thu, 18 Apr 2024 11:41:29 +0200, AngeloGioacchino Del Regno wrote:
> Add bindings for the MediaTek External Memory Interface Interconnect,
> which providers support system bandwidth requirements through Dynamic
> Voltage Frequency Scaling Resource Collector (DVFSRC) hardware.
> 
> This adds bindings for MediaTek MT8183 and MT8195 SoCs.
> 
> Note that this is modeled as a subnode of DVFSRC for multiple reasons:
>  - Some SoCs have more than one interconnect on the DVFSRC (and two
>    different kinds of EMI interconnect, and also a SMI interconnect);
> 
>  - Some boards will want to not enable the interconnect driver because
>    some of those are not battery powered (so they just keep the knobs
>    at full thrust from the bootloader and never care scaling busses);
> 
>  - Some DVFSRC interconnect features may depend on firmware.
> 
> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
> ---
>  .../interconnect/mediatek,mt8183-emi.yaml     | 51 +++++++++++++++++++
>  .../interconnect/mediatek,mt8183.h            | 23 +++++++++
>  .../interconnect/mediatek,mt8195.h            | 44 ++++++++++++++++
>  3 files changed, 118 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/interconnect/mediatek,mt8183-emi.yaml
>  create mode 100644 include/dt-bindings/interconnect/mediatek,mt8183.h
>  create mode 100644 include/dt-bindings/interconnect/mediatek,mt8195.h
> 

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