lkml.org 
[lkml]   [2013]   [Nov]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 04/11] devicetree: bindings: Document qcom,saw2 node
Date
The saw2 binding describes the SPM/AVS wrapper hardware used to
control the regulator supplying voltage to the Krait CPUs.

Cc: <devicetree@vger.kernel.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
---

When a SAW is for a CPU it is put behind the CPU alias region similar
to the ACC and timers. I haven't documented that here because I'm not using
it right now. I'm also thinking perhaps l2-saw2 is not important (technically
its the same hardware block as a CPU's saw). Instead I should point to this
node via the l2-cache node via some *-supply property. Thoughts?

.../devicetree/bindings/arm/msm/qcom,saw2.txt | 23 ++++++++++++++++++++++
1 file changed, 23 insertions(+)
create mode 100644 Documentation/devicetree/bindings/arm/msm/qcom,saw2.txt

diff --git a/Documentation/devicetree/bindings/arm/msm/qcom,saw2.txt b/Documentation/devicetree/bindings/arm/msm/qcom,saw2.txt
new file mode 100644
index 0000000..6360db2
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/msm/qcom,saw2.txt
@@ -0,0 +1,23 @@
+* SPM AVS Wrapper 2 (SAW2)
+
+The SAW2 is a wrapper around the Subsystem Power Manager (SPM) and the
+Adaptive Voltage Scaling (AVS) hardware. The SPM is programmable
+micro-controller that transitions a piece of hardware (like a processor) into
+and out of low power modes via a direct connection to the PMIC. It can also
+be wired up to interact with other processors in the system, notifying them
+when a low power state is entered or exited.
+
+Required Properties:
+
+- compatible : Shall contain "qcom,saw2".
+ A more specific property can be specified as follows:
+ "qcom,l2-saw2"
+- reg: Specifies the base address and size of the register region.
+
+Example:
+
+ regulator@f9012000 {
+ compatible = "qcom,l2-saw2", "qcom,saw2";
+ reg = <0xf9012000 0x1000>;
+ };
+
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
hosted by The Linux Foundation


\
 
 \ /
  Last update: 2013-11-02 00:01    [W:0.252 / U:0.204 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site