From: lina.iyer@linaro.org (Lina Iyer)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v5 02/16] dt/bindings: Update binding for PM domain idle states
Date: Fri, 26 Aug 2016 14:17:44 -0600 [thread overview]
Message-ID: <1472242678-33700-3-git-send-email-lina.iyer@linaro.org> (raw)
In-Reply-To: <1472242678-33700-1-git-send-email-lina.iyer@linaro.org>
From: Axel Haslam <ahaslam+renesas@baylibre.com>
Update DT bindings to describe idle states of PM domains.
Cc: <devicetree@vger.kernel.org>
Signed-off-by: Marc Titinger <mtitinger+renesas@baylibre.com>
Signed-off-by: Lina Iyer <lina.iyer@linaro.org>
[Lina: Added state properties, removed state names, wakeup-latency,
added of_pm_genpd_init() API, pruned commit text]
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
[Ulf: Moved around code to make it compile properly, rebased on top of multiple state support]
---
.../devicetree/bindings/power/power_domain.txt | 57 ++++++++++++++++++++++
1 file changed, 57 insertions(+)
diff --git a/Documentation/devicetree/bindings/power/power_domain.txt b/Documentation/devicetree/bindings/power/power_domain.txt
index 025b5e7..4960486 100644
--- a/Documentation/devicetree/bindings/power/power_domain.txt
+++ b/Documentation/devicetree/bindings/power/power_domain.txt
@@ -29,6 +29,10 @@ Optional properties:
specified by this binding. More details about power domain specifier are
available in the next section.
+- domain-idle-states : A phandle of an idle-state that shall be soaked into a
+ generic domain power state. The idle state definitions are
+ compatible with arm,idle-state specified in [1].
+
Example:
power: power-controller at 12340000 {
@@ -59,6 +63,57 @@ The nodes above define two power controllers: 'parent' and 'child'.
Domains created by the 'child' power controller are subdomains of '0' power
domain provided by the 'parent' power controller.
+Example 3: ARM v7 style CPU PM domains (Linux domain controller)
+
+ cpus {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ CPU0: cpu at 0 {
+ device_type = "cpu";
+ compatible = "arm,cortex-a7", "arm,armv7";
+ reg = <0x0>;
+ power-domains = <&a7_pd>;
+ };
+
+ CPU1: cpu at 1 {
+ device_type = "cpu";
+ compatible = "arm,cortex-a15", "arm,armv7";
+ reg = <0x0>;
+ power-domains = <&a15_pd>;
+ };
+ };
+
+ pm-domains {
+ a15_pd: a15_pd {
+ /* will have A15 platform ARM_PD_METHOD_OF_DECLARE*/
+ compatible = "arm,cortex-a15";
+ #power-domain-cells = <0>;
+ domain-idle-states = <&CLUSTER_SLEEP_0>;
+ };
+
+ a7_pd: a7_pd {
+ /* will have a A7 platform ARM_PD_METHOD_OF_DECLARE*/
+ compatible = "arm,cortex-a7";
+ #power-domain-cells = <0>;
+ domain-idle-states = <&CLUSTER_SLEEP_0>, <&CLUSTER_SLEEP_1>;
+ };
+
+ CLUSTER_SLEEP_0: state0 {
+ compatible = "arm,idle-state";
+ entry-latency-us = <1000>;
+ exit-latency-us = <2000>;
+ min-residency-us = <10000>;
+ };
+
+ CLUSTER_SLEEP_1: state1 {
+ compatible = "arm,idle-state";
+ entry-latency-us = <5000>;
+ exit-latency-us = <5000>;
+ min-residency-us = <100000>;
+ };
+ };
+
==PM domain consumers==
Required properties:
@@ -76,3 +131,5 @@ Example:
The node above defines a typical PM domain consumer device, which is located
inside a PM domain with index 0 of a power controller represented by a node
with the label "power".
+
+[1]. Documentation/devicetree/bindings/arm/idle-states.txt
--
2.7.4
next prev parent reply other threads:[~2016-08-26 20:17 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-08-26 20:17 [PATCH v5 00/16] PM: SoC idle support using PM domains Lina Iyer
2016-08-26 20:17 ` [PATCH v5 01/16] PM / Domains: Allow domain power states to be read from DT Lina Iyer
2016-08-26 20:17 ` Lina Iyer [this message]
2016-09-02 14:21 ` [PATCH v5 02/16] dt/bindings: Update binding for PM domain idle states Sudeep Holla
2016-09-02 20:16 ` Lina Iyer
2016-09-12 15:19 ` Brendan Jackman
2016-09-12 16:16 ` Lina Iyer
2016-09-12 17:09 ` Sudeep Holla
2016-09-13 17:50 ` Brendan Jackman
2016-09-13 19:38 ` Lina Iyer
2016-09-14 10:14 ` Brendan Jackman
2016-09-14 11:37 ` Ulf Hansson
2016-09-14 14:55 ` Lina Iyer
2016-09-16 17:13 ` Kevin Hilman
2016-09-16 17:39 ` Sudeep Holla
2016-09-19 15:09 ` Brendan Jackman
2016-09-20 16:17 ` Lina Iyer
2016-09-21 9:48 ` Brendan Jackman
2016-08-26 20:17 ` [PATCH v5 03/16] PM / Domains: Abstract genpd locking Lina Iyer
2016-08-26 20:17 ` [PATCH v5 04/16] PM / Domains: Support IRQ safe PM domains Lina Iyer
2016-08-26 20:17 ` [PATCH v5 05/16] PM / doc: Update device documentation for devices in " Lina Iyer
2016-08-26 20:17 ` [PATCH v5 06/16] drivers: cpu: Setup CPU devices to do runtime PM Lina Iyer
2016-08-26 20:17 ` [PATCH v5 07/16] kernel/cpu_pm: Add runtime PM support for CPUs Lina Iyer
2016-08-26 20:17 ` [PATCH v5 08/16] PM / cpu_domains: Setup PM domains for CPUs/clusters Lina Iyer
2016-08-26 20:17 ` [PATCH v5 09/16] PM / cpu_domains: Initialize CPU PM domains from DT Lina Iyer
2016-08-26 23:28 ` kbuild test robot
2016-08-26 20:17 ` [PATCH v5 10/16] timer: Export next wake up of a CPU Lina Iyer
2016-08-26 21:29 ` kbuild test robot
2016-08-26 20:17 ` [PATCH v5 11/16] PM / cpu_domains: Add PM Domain governor for CPUs Lina Iyer
2016-08-26 23:10 ` kbuild test robot
2016-08-26 20:17 ` [PATCH v5 12/16] doc / cpu_domains: Describe CPU PM domains setup and governor Lina Iyer
2016-08-26 20:17 ` [PATCH v5 13/16] drivers: firmware: psci: Allow OS Initiated suspend mode Lina Iyer
2016-08-26 20:17 ` [PATCH v5 14/16] drivers: firmware: psci: Support cluster idle states for OS-Initiated Lina Iyer
2016-08-26 20:17 ` [PATCH v5 15/16] dt/bindings: Add PSCI OS-Initiated PM Domains bindings Lina Iyer
2016-08-26 20:17 ` [PATCH v5 16/16] ARM64: dts: Define CPU power domain for MSM8916 Lina Iyer
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