From mboxrd@z Thu Jan 1 00:00:00 1970 From: Geert Uytterhoeven Subject: [PATCH v4 2/9] PM / Domains: Add DT bindings for power-on/off latencies Date: Mon, 3 Nov 2014 16:34:49 +0100 Message-ID: <1415028896-9005-3-git-send-email-geert+renesas@glider.be> References: <1415028896-9005-1-git-send-email-geert+renesas@glider.be> Return-path: In-Reply-To: <1415028896-9005-1-git-send-email-geert+renesas@glider.be> Sender: linux-pm-owner@vger.kernel.org To: "Rafael J. Wysocki" , Simon Horman , Magnus Damm Cc: Ulf Hansson , Kevin Hilman , Grygorii Strashko , Philipp Zabel , Tomasz Figa , linux-sh@vger.kernel.org, linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Geert Uytterhoeven List-Id: devicetree@vger.kernel.org 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 Acked-by: Kevin Hilman Reviewed-by: Ulf Hansson --- 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@12340000 { 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