[RFC 02/13] dt-bindings: soc: mediatek: apusys: Add new document for APU power

[Flora Fu <flora.fu@mediatek.com>]

Add new document for APU power controller.

Signed-off-by: Flora Fu <flora.fu@mediatek.com>
---
 .../soc/mediatek/mediatek,apu-pwr.yaml        | 88 +++++++++++++++++++
 1 file changed, 88 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/soc/mediatek/mediatek,apu-pwr.yaml

diff --git a/Documentation/devicetree/bindings/soc/mediatek/mediatek,apu-pwr.yaml b/Documentation/devicetree/bindings/soc/mediatek/mediatek,apu-pwr.yaml
new file mode 100644
index 000000000000..0fd5af5138e3
--- /dev/null
+++ b/Documentation/devicetree/bindings/soc/mediatek/mediatek,apu-pwr.yaml
@@ -0,0 +1,88 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+# # Copyright 2021 MediaTek Inc.
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/soc/mediatek/mediatek,apu-pwr.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: Mediatek APU Power
+
+description: |
+  Mediatek AI Process Unit (APU) power driver support for subsys clock and
+  regulator controller. It will has device link to iommu-apu and apusys-rv
+  tinysys driver to ensure the power state is ready for hardware
+  in sub modules.
+
+maintainers:
+  - Flora Fu <flora.fu@mediatek.com>
+
+properties:
+  compatible:
+    oneOf:
+      - const: mediatek,apusys-power
+      - items:
+          - const: mediatek,apusys-power
+          - const: mediatek,mt8192-apu-power
+
+  reg:
+    minItems: 1
+
+  reg-names:
+    minItems: 1
+
+  power-domains:
+    maxItems: 1
+
+  vvpu-supply:
+    description: apu vpu regulator supply.
+
+  vmdla-supply:
+    description: apu mdla regulator supply.
+
+  clocks:
+    description: Contains module clock source and clock names
+
+  clock-names:
+    description: Names of the clocks list in clocks property
+
+required:
+  - compatible
+  - reg
+  - reg-names
+  - clocks
+  - clock-names
+  - vvpu-supply
+  - vmdla-supply
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/mt8192-clk.h>
+    apusys_power: apusys_power@190f1000 {
+      compatible = "mediatek,apusys-power",
+                   "mediatek,mt8192-apu-power";
+      reg = <0x190f1000 0x1000>;
+      reg-names = "apu_pcu";
+      power-domains = <&apuspm 0>;
+      vvpu-supply = <&mt6359_vproc1_buck_reg>;
+      vmdla-supply = <&mt6359_vproc2_buck_reg>;
+      clocks = <&topckgen CLK_TOP_DSP_SEL>,
+               <&topckgen CLK_TOP_DSP1_SEL>,
+               <&topckgen CLK_TOP_DSP1_NPUPLL_SEL>,
+               <&topckgen CLK_TOP_DSP2_SEL>,
+               <&topckgen CLK_TOP_DSP2_NPUPLL_SEL>,
+               <&topckgen CLK_TOP_DSP5_SEL>,
+               <&topckgen CLK_TOP_DSP5_APUPLL_SEL>,
+               <&topckgen CLK_TOP_IPU_IF_SEL>,
+               <&clk26m>;
+      clock-names = "clk_top_dsp_sel",
+                    "clk_top_dsp1_sel",
+                    "clk_top_dsp1_npupll_sel",
+                    "clk_top_dsp2_sel",
+                    "clk_top_dsp2_npupll_sel",
+                    "clk_top_dsp5_sel",
+                    "clk_top_dsp5_apupll_sel",
+                    "clk_top_ipu_if_sel",
+                    "clk_top_clk26m";
+    };
-- 
2.18.0