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dt-bindings: clock: amlogic, gxbb-aoclkc: Update bindings

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On the first revision of the bindings, only the gates + resets were known
in the AO Clock HW, but more registers used to configures AO clock are known
to be spread among the AO register space.
This patch adds a parent node for the entire system control zone for the AO
domain then moves the clock controller as a subnode of the system control
node.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
This commit is contained in:
Neil Armstrong
2017-08-01 13:56:56 +02:00
parent 914e6e80b3
commit 3b3025625f
1 changed files with 16 additions and 6 deletions
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Documentation/devicetree/bindings/clock/amlogic,gxbb-aoclkc.txt
+16 -6
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@@ -5,9 +5,11 @@ controllers within the Always-On part of the SoC.
Required Properties: Required Properties:
- compatible: should be "amlogic,gxbb-aoclkc" - compatible: value should be different for each SoC family as :
- reg: physical base address of the clock controller and length of memory - GXBB (S905) : "amlogic,meson-gxbb-aoclkc"
mapped region. - GXL (S905X, S905D) : "amlogic,meson-gxl-aoclkc"
- GXM (S912) : "amlogic,meson-gxm-aoclkc"
followed by the common "amlogic,meson-gx-aoclkc"
- #clock-cells: should be 1. - #clock-cells: should be 1.
@@ -23,14 +25,22 @@ to specify the reset which they consume. All available resets are defined as
preprocessor macros in the dt-bindings/reset/gxbb-aoclkc.h header and can be preprocessor macros in the dt-bindings/reset/gxbb-aoclkc.h header and can be
used in device tree sources. used in device tree sources.
Parent node should have the following properties :
- compatible: "amlogic,meson-gx-ao-sysctrl", "syscon", "simple-mfd"
- reg: base address and size of the AO system control register space.
Example: AO Clock controller node: Example: AO Clock controller node:
clkc_AO: clock-controller@040 { ao_sysctrl: sys-ctrl@0 {
compatible = "amlogic,gxbb-aoclkc"; compatible = "amlogic,meson-gx-ao-sysctrl", "syscon", "simple-mfd";
reg = <0x0 0x040 0x0 0x4>; reg = <0x0 0x0 0x0 0x100>;
clkc_AO: clock-controller {
compatible = "amlogic,meson-gxbb-aoclkc", "amlogic,meson-gx-aoclkc";
#clock-cells = <1>; #clock-cells = <1>;
#reset-cells = <1>; #reset-cells = <1>;
}; };
};
Example: UART controller node that consumes the clock and reset generated Example: UART controller node that consumes the clock and reset generated
by the clock controller: by the clock controller: