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Message-ID: <3f96256d-0de5-26a2-e656-7912e06806ea@codeaurora.org>
Date: Mon, 10 Apr 2017 09:42:42 +0530
From: Rajendra Nayak <rnayak@...eaurora.org>
To: Jon Hunter <jonathanh@...dia.com>,
"Rafael J . Wysocki" <rjw@...ysocki.net>,
Kevin Hilman <khilman@...nel.org>,
Ulf Hansson <ulf.hansson@...aro.org>, geert@...ux-m68k.org
Cc: stanimir.varbanov@...aro.org, sboyd@...eaurora.org,
Marek Szyprowski <m.szyprowski@...sung.com>,
linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-tegra@...r.kernel.org
Subject: Re: [RFC PATCH 4/4] dt-bindings: Add support for devices with
multiple PM domains
On 03/28/2017 07:44 PM, Jon Hunter wrote:
> Now that the generic PM domain framework supports consumers that can
> control multiple PM domains, update the device-tree binding for generic
> PM domains to state that one or more PM domain is permitted for a
> device.
>
> Signed-off-by: Jon Hunter <jonathanh@...dia.com>
> ---
> Documentation/devicetree/bindings/power/power_domain.txt | 11 +++++++++--
> 1 file changed, 9 insertions(+), 2 deletions(-)
>
> diff --git a/Documentation/devicetree/bindings/power/power_domain.txt b/Documentation/devicetree/bindings/power/power_domain.txt
> index 723e1ad937da..fb28d37f9e1f 100644
> --- a/Documentation/devicetree/bindings/power/power_domain.txt
> +++ b/Documentation/devicetree/bindings/power/power_domain.txt
> @@ -20,8 +20,15 @@ Required properties:
> as specified by device tree binding documentation of particular provider.
>
> Optional properties:
> - - power-domains : A phandle and PM domain specifier as defined by bindings of
> - the power controller specified by phandle.
> + - power-domains : An array of one or more PM domain specifiers (defined by the
> + bindings of the PM domain provider) for each PM domain that
> + is required by the device.
> + - power-domain-names: A list of strings of PM domain names. The list must have
> + a name for each PM domain specifier in the
> + 'power-domains' property and these names must be unique
> + within the context of this property. The names must be
> + indexed so that the first name corresponds to the first
> + PM domain specifier and so on.
These bindings are for power-domain providers. We also need to update the bindings
for the consumers (look further down in the same file)
> Some power domains might be powered from another power domain (or have
> other hardware specific dependencies). For representing such dependency
> a standard PM domain consumer binding is used. When provided, all domains
>
--
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