Thread (24 messages) 24 messages, 3 authors, 2015-08-25

[PATCH-v2 3/5] mfd: devicetree: bindings: Add clock subdevice node information

From: Lee Jones <hidden>
Date: 2015-08-25 07:59:05
Also in: linux-clk, linux-devicetree, lkml

On Tue, 25 Aug 2015, Vaibhav Hiremath wrote:
quoted hunk ↗ jump to hunk
This patch updates the binding documentation for optional
clocks node and related information for buffered 32KHz clock.

Signed-off-by: Vaibhav Hiremath <redacted>
Reviewed-by: Krzysztof Kozlowski <redacted>
Acked-by: Rob Herring <robh@kernel.org>
---
 Documentation/devicetree/bindings/mfd/88pm800.txt | 27 +++++++++++++++++++++++
 1 file changed, 27 insertions(+)
diff --git a/Documentation/devicetree/bindings/mfd/88pm800.txt b/Documentation/devicetree/bindings/mfd/88pm800.txt
index 2c82fcb..bc6cb02 100644
--- a/Documentation/devicetree/bindings/mfd/88pm800.txt
+++ b/Documentation/devicetree/bindings/mfd/88pm800.txt
@@ -15,6 +15,26 @@ Optional properties :
   Without this both BUCK1A and BUCK1B operates independently with 3A capacity.
   (This property is only applicable to 88PM860)
 
+Optional nodes:
+- clocks: 88pm800 family of devices provide multiple buffered 32.768
+  KHz outputs, so to register these as clocks with common clock framework
+  instantiate a sub-node named "clocks". It uses the common clock binding
+  documented in :
+  [Documentation/devicetree/bindings/clock/clock-bindings.txt]
I tend to prefer relative paths.  Firstly because they're shorter and
more succinct and secondly because if we do eventually move DT out of
the kernel, it will be less hassle to rename each of them.
quoted hunk ↗ jump to hunk
+  - #clock-cells: should be 1.
+
+  - The following is the list of clocks generated by the controller. Each clock
+    is assigned an identifier and client nodes use this identifier to specify
+    the clock which they consume.
+    Clock		ID           	Devices
+    ----------------------------------------------------------
+    pm800_clk32k_1	0		88PM800 and 88PM860
+    pm800_clk32k_2	1		88PM800 and 88PM860
+    pm800_clk32k_3	2		88PM800
+
+  - compatible: Should be : "marvell,88pm800-clk"
+
 88pm80x family of devices consists of varied group of sub-devices:
 
 Device		 	Supply Names	 Description
@@ -22,6 +42,7 @@ Device		 	Supply Names	 Description
 88pm80x-onkey		:		: On key
 88pm80x-rtc		:		: RTC
 88pm80x-regulator	:		: Regulators
+88pm80x-clk		:		: 32KHz Clk provider
Nit: Alphabetical?
quoted hunk ↗ jump to hunk
 Example:
 
@@ -33,6 +54,12 @@ Example:
 		interrupt-controller;
 		#interrupt-cells = <1>;
 
+		pm800clk: clocks {
+			compatible = "marvell,88pm800-clk";
+			#clock-cells = <1>;
+			clock-output-names = "xx", "yy", "zz";
+		};
+
 		regulators {
 			compatible = "marvell,88pm80x-regulator";
 
-- 
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org ? Open source software for ARM SoCs
Follow Linaro: Facebook | Twitter | Blog
Keyboard shortcuts
hback out one level
jnext message in thread
kprevious message in thread
ldrill in
Escclose help / fold thread tree
?toggle this help