linux-kernel - [PATCH v5 1/8] PM / Domains: Add DT bindings for power-on/off latencies

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <1416231044-1903-2-git-send-email-geert+renesas@glider.be>
Date:	Mon, 17 Nov 2014 14:30:37 +0100
From:	Geert Uytterhoeven <geert+renesas@...der.be>
To:	Simon Horman <horms@...ge.net.au>,
	Magnus Damm <magnus.damm@...il.com>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>
Cc:	Ulf Hansson <ulf.hansson@...aro.org>,
	Kevin Hilman <khilman@...aro.org>,
	Grygorii Strashko <grygorii.strashko@...com>,
	Philipp Zabel <philipp.zabel@...il.com>,
	Tomasz Figa <tomasz.figa@...il.com>, linux-sh@...r.kernel.org,
	linux-pm@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	Geert Uytterhoeven <geert+renesas@...der.be>
Subject: [PATCH v5 1/8] PM / Domains: Add DT bindings for power-on/off latencies

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@...der.be>
Acked-by: Kevin Hilman <khilman@...aro.org>
Reviewed-by: Ulf Hansson <ulf.hansson@...aro.org>
---
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 | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/power/power_domain.txt b/Documentation/devicetree/bindings/power/power_domain.txt
index 98c16672ab5f49e0..c4a4afb2ac3b0500 100644
--- a/Documentation/devicetree/bindings/power/power_domain.txt
+++ b/Documentation/devicetree/bindings/power/power_domain.txt
@@ -19,16 +19,26 @@ Required properties:
    providing multiple PM domains (e.g. power controllers), but can be any value
    as specified by device tree binding documentation of particular provider.
 
+Optional properties:
+ - 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:
 
 	power: power-controller@...40000 {
 		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.
 
 ==PM domain consumers==
 
-- 
1.9.1

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/