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Subject[PATCH/RFC v6 1/7] PM / Domains: Add DT bindings for power-on/off latencies
Date
PM domain power-on/off latencies are properties of the hardware.
In legacy code, they're specified from platform code.
On DT platforms, their values should come from DT.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Kevin Hilman <khilman@linaro.org>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
---
v6:
- Rebased on top of v4.1-rc1 for new RFC,

v5:
- No changes,

v4:
- Add Reviewed-by,
- Replace single latency value by list of latencies,

v3:
- No changes,

v2:
- Add Acked-by.
---
Documentation/devicetree/bindings/power/power_domain.txt | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/power/power_domain.txt b/Documentation/devicetree/bindings/power/power_domain.txt
index 025b5e7df61c630c..d659e5cb39be6057 100644
--- a/Documentation/devicetree/bindings/power/power_domain.txt
+++ b/Documentation/devicetree/bindings/power/power_domain.txt
@@ -28,6 +28,12 @@ Optional properties:
created by the given provider should be subdomains of the domain
specified by this binding. More details about power domain specifier are
available in the next section.
+ - power-on-latency: List of power-on latencies (in ns), one for each PM
+ domain. If all power-on latencies are identical, the list may be shortened
+ to a single value.
+ - power-off-latency: List of power-off latencies (in ns), one for each PM
+ domain. If all power-off latencies are identical, the list may be shortened
+ to a single value.

Example:

@@ -35,10 +41,12 @@ Example:
compatible = "foo,power-controller";
reg = <0x12340000 0x1000>;
#power-domain-cells = <1>;
+ power-on-latency = <250000 400000 180000>;
+ power-off-latency = <250000 400000 300000>;
};

-The node above defines a power controller that is a PM domain provider and
-expects one cell as its phandle argument.
+The node above defines a power controller that is a PM domain provider for
+3 PM domains, and expects one cell as its phandle argument.

Example 2:

--
1.9.1


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