linux-kernel - [RFC PATCH 4/4] dt-bindings: Add support for devices with multiple PM domains

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Date:   Tue, 28 Mar 2017 15:14:03 +0100
From:   Jon Hunter <jonathanh@...dia.com>
To:     "Rafael J . Wysocki" <rjw@...ysocki.net>,
        Kevin Hilman <khilman@...nel.org>,
        Ulf Hansson <ulf.hansson@...aro.org>, <geert@...ux-m68k.org>,
        <rnayak@...eaurora.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>, Jon Hunter <jonathanh@...dia.com>
Subject: [RFC PATCH 4/4] dt-bindings: Add support for devices with multiple PM domains

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.
    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
-- 
2.7.4