Linux-PM Archive on lore.kernel.org
 help / color / Atom feed
From: Rob Herring <robh@kernel.org>
To: Maulik Shah <mkshah@codeaurora.org>
Cc: swboyd@chromium.org, agross@kernel.org, david.brown@linaro.org,
	linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-pm@vger.kernel.org, bjorn.andersson@linaro.org,
	evgreen@chromium.org, dianders@chromium.org,
	rnayak@codeaurora.org, ilina@codeaurora.org,
	lsrao@codeaurora.org, ulf.hansson@linaro.org,
	devicetree@vger.kernel.org
Subject: Re: [PATCH v2 3/6] dt-bindings: soc: qcom: Add RSC power domain specifier
Date: Tue, 27 Aug 2019 17:32:52 -0500
Message-ID: <20190827223252.GA26039@bogus> (raw)
In-Reply-To: <20190823081703.17325-4-mkshah@codeaurora.org>

On Fri, Aug 23, 2019 at 01:47:00PM +0530, Maulik Shah wrote:
> In addition to transmitting resource state requests to the remote
> processor, the RSC is responsible for powering off/lowering the
> requirements from CPUs subsystem for the associated hardware like
> buses, clocks, and regulators when all CPUs and cluster is powered down.
> 
> The power domain is configured to a low power state and when all the
> CPUs are powered down, the RSC can lower resource state requirements
> and power down the rails that power the CPUs.
> 
> Add PM domain specifier property for RSC controller.
> 
> Cc: devicetree@vger.kernel.org
> Signed-off-by: Maulik Shah <mkshah@codeaurora.org>
> Reviewed-by: Stephen Boyd <swboyd@chromium.org>
> ---
>  Documentation/devicetree/bindings/soc/qcom/rpmh-rsc.txt | 8 ++++++++
>  1 file changed, 8 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/soc/qcom/rpmh-rsc.txt b/Documentation/devicetree/bindings/soc/qcom/rpmh-rsc.txt
> index 9b86d1eff219..d0ab6e9b6745 100644
> --- a/Documentation/devicetree/bindings/soc/qcom/rpmh-rsc.txt
> +++ b/Documentation/devicetree/bindings/soc/qcom/rpmh-rsc.txt
> @@ -83,6 +83,13 @@ Properties:
>  	Value type: <string>
>  	Definition: Name for the RSC. The name would be used in trace logs.
>  
> +- #power-domain-cells:
> +	Usage: optional
> +	Value type: <u32>
> +	Definition: Number of cells in power domain specifier. Optional for
> +		    controllers that may be in 'solver' state where they can
> +		    be in autonomous mode executing low power modes.

What's the value? It's always 0?

> +
>  Drivers that want to use the RSC to communicate with RPMH must specify their
>  bindings as child nodes of the RSC controllers they wish to communicate with.
>  
> @@ -112,6 +119,7 @@ TCS-OFFSET: 0xD00
>  				  <SLEEP_TCS   3>,
>  				  <WAKE_TCS    3>,
>  				  <CONTROL_TCS 1>;
> +		#power-domain-cells = <0>;
>  	};
>  
>  Example 2:
> -- 
> QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, hosted by The Linux Foundation.
> 

  reply index

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-23  8:16 [PATCH v2 0/6] Add RSC power domain support Maulik Shah
2019-08-23  8:16 ` [PATCH v2 1/6] drivers: qcom: rpmh: fix macro to accept NULL argument Maulik Shah
2019-08-23  8:16 ` [PATCH v2 2/6] drivers: qcom: rpmh: remove rpmh_flush export Maulik Shah
2019-08-23  8:17 ` [PATCH v2 3/6] dt-bindings: soc: qcom: Add RSC power domain specifier Maulik Shah
2019-08-27 22:32   ` Rob Herring [this message]
2019-09-03  8:44     ` Maulik Shah
2019-08-23  8:17 ` [PATCH v2 4/6] drivers: qcom: rpmh-rsc: Add RSC power domain support Maulik Shah
2019-09-05 17:32   ` Stephen Boyd
2019-08-23  8:17 ` [PATCH v2 5/6] arm64: dts: Convert to the hierarchical CPU topology layout for sdm845 Maulik Shah
2019-08-23  8:17 ` [PATCH v2 6/6] arm64: dts: Add rsc power domain " Maulik Shah
2019-09-05 17:33   ` Stephen Boyd

Reply instructions:

You may reply publically to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20190827223252.GA26039@bogus \
    --to=robh@kernel.org \
    --cc=agross@kernel.org \
    --cc=bjorn.andersson@linaro.org \
    --cc=david.brown@linaro.org \
    --cc=devicetree@vger.kernel.org \
    --cc=dianders@chromium.org \
    --cc=evgreen@chromium.org \
    --cc=ilina@codeaurora.org \
    --cc=linux-arm-msm@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-pm@vger.kernel.org \
    --cc=lsrao@codeaurora.org \
    --cc=mkshah@codeaurora.org \
    --cc=rnayak@codeaurora.org \
    --cc=swboyd@chromium.org \
    --cc=ulf.hansson@linaro.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

Linux-PM Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-pm/0 linux-pm/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-pm linux-pm/ https://lore.kernel.org/linux-pm \
		linux-pm@vger.kernel.org linux-pm@archiver.kernel.org
	public-inbox-index linux-pm

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.linux-pm


AGPL code for this site: git clone https://public-inbox.org/ public-inbox