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Subject[PATCH 2/2] dt-bindings: power: add amlogic meeson power domain bindings
Date
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
---
.../bindings/power/amlogic,meson-gx-pwrc.txt | 65 ++++++++++++++++++++++
1 file changed, 65 insertions(+)
create mode 100644 Documentation/devicetree/bindings/power/amlogic,meson-gx-pwrc.txt

diff --git a/Documentation/devicetree/bindings/power/amlogic,meson-gx-pwrc.txt b/Documentation/devicetree/bindings/power/amlogic,meson-gx-pwrc.txt
new file mode 100644
index 0000000..94c2474
--- /dev/null
+++ b/Documentation/devicetree/bindings/power/amlogic,meson-gx-pwrc.txt
@@ -0,0 +1,65 @@
+Amlogic Meson Power Controller
+==============================
+
+The Amlogic Meson SoCs embeds an internal Power domain controller.
+
+VPU Power Domain
+----------------
+
+The Video Processing Unit power domain is controlled by this power controller,
+but the domain requires some external resources to meet the correct power
+sequences.
+The bindings must respect the power domain bindings as described in the file
+power_domain.txt
+
+Device Tree Bindings:
+---------------------
+
+Required properties:
+- compatible: value should be different for each SoC family as :
+ - GXBB (S905) : "amlogic,meson-gxbb-vpu"
+ - GXL (S905X, S905D) : "amlogic,meson-gxl-vpu"
+ - GXM (S912) : "amlogic,meson-gxm-vpu"
+ followed by the common "amlogic,meson-gx-vpu"
+- #power-domain-cells: should be 0
+- amlogic,hhi-sysctrl: phandle to the HHI sysctrl node
+- resets: phandles to the reset lines needed for this power demain sequence
+ as described in ../reset/reset.txt
+- clocks: from common clock binding: handle to VPU and VAPB clocks
+- clock-names: from common clock binding: must contain "vpu", "vapb"
+ corresponding to entry in the clocks property.
+
+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_sysctrl: sys-ctrl@0 {
+ compatible = "amlogic,meson-gx-ao-sysctrl", "syscon", "simple-mfd";
+ reg = <0x0 0x0 0x0 0x100>;
+
+ pwrc_vpu: power-controller-vpu {
+ compatible = "amlogic,meson-gx-pwrc-vpu";
+ #power-domain-cells = <0>;
+ amlogic,hhi-sysctrl = <&sysctrl>;
+ resets = <&reset RESET_VIU>,
+ <&reset RESET_VENC>,
+ <&reset RESET_VCBUS>,
+ <&reset RESET_BT656>,
+ <&reset RESET_DVIN_RESET>,
+ <&reset RESET_RDMA>,
+ <&reset RESET_VENCI>,
+ <&reset RESET_VENCP>,
+ <&reset RESET_VDAC>,
+ <&reset RESET_VDI6>,
+ <&reset RESET_VENCL>,
+ <&reset RESET_VID_LOCK>;
+ clocks = <&clkc CLKID_VPU>,
+ <&clkc CLKID_VAPB>;
+ clock-names = "vpu", "vapb";
+ };
+};
+
+
--
2.7.4
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