[PATCH 1/3] dt-bindings: clock: meson8b: use the registers from the HHI syscon

Martin Blumenstingl martin.blumenstingl at googlemail.com
Sat Jul 21 12:28:44 PDT 2018

The clock controller on Meson8/Meson8m2 and Meson8b is part of a
register region called "HHI". This register area contains more
functionality than just a clock controller:
- the clock controller
- some reset controller bits
- temperature sensor calibration data (on Meson8b and Meson8m2 only)
- HDMI controller

The HHI register area may be accessed concurrently. Allow this by using
a "system controller" as parent node.

Signed-off-by: Martin Blumenstingl <martin.blumenstingl at googlemail.com>
 .../bindings/clock/amlogic,meson8b-clkc.txt         | 13 +++++--------
 1 file changed, 5 insertions(+), 8 deletions(-)

diff --git a/Documentation/devicetree/bindings/clock/amlogic,meson8b-clkc.txt b/Documentation/devicetree/bindings/clock/amlogic,meson8b-clkc.txt
index b455c5aa9139..38fb979210d3 100644
--- a/Documentation/devicetree/bindings/clock/amlogic,meson8b-clkc.txt
+++ b/Documentation/devicetree/bindings/clock/amlogic,meson8b-clkc.txt
@@ -9,15 +9,13 @@ Required Properties:
 	- "amlogic,meson8-clkc" for Meson8 (S802) SoCs
 	- "amlogic,meson8b-clkc" for Meson8 (S805) SoCs
 	- "amlogic,meson8m2-clkc" for Meson8m2 (S812) SoCs
-- reg: it must be composed by two tuples:
-	0) physical base address of the xtal register and length of memory
-	   mapped region.
-	1) physical base address of the clock controller and length of memory
-	   mapped region.
 - #clock-cells: should be 1.
 - #reset-cells: should be 1.
+Parent node should have the following properties :
+- compatible: "syscon", "simple-mfd"
+- reg: base address and size of the HHI system control register space.
 Each clock is assigned an identifier and client nodes can use this identifier
 to specify the clock which they consume. All available clocks are defined as
 preprocessor macros in the dt-bindings/clock/meson8b-clkc.h header and can be
@@ -30,9 +28,8 @@ device tree sources).
 Example: Clock controller node:
-	clkc: clock-controller at c1104000 {
+	clkc: clock-controller {
 		compatible = "amlogic,meson8b-clkc";
-		reg = <0xc1108000 0x4>, <0xc1104000 0x460>;
 		#clock-cells = <1>;
 		#reset-cells = <1>;

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