There are two system control on Cix sky1 Soc. One is located in S0 domain,
and the other is located in S0 and S5 domain. The system control contains
resets, usb typeC and more. At this point, only the reset controller child
is described as usb typeC uses it by phandle.

Signed-off-by: Gary Yang <redacted>
---
 .../soc/cix/cix,sky1-system-control.yaml      |  49 ++++++
 include/dt-bindings/reset/cix,sky1-rst-fch.h  |  42 +++++
 include/dt-bindings/reset/cix,sky1-rst.h      | 164 ++++++++++++++++++
 3 files changed, 255 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/soc/cix/cix,sky1-system-control.yaml
 create mode 100644 include/dt-bindings/reset/cix,sky1-rst-fch.h
 create mode 100644 include/dt-bindings/reset/cix,sky1-rst.h

diff --git a/Documentation/devicetree/bindings/soc/cix/cix,sky1-system-control.yaml b/Documentation/devicetree/bindings/soc/cix/cix,sky1-system-control.yaml
new file mode 100644
index 000000000000..5fb6b97c3c00
--- /dev/null
+++ b/Documentation/devicetree/bindings/soc/cix/cix,sky1-system-control.yaml

@@ -0,0 +1,49 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/soc/cix/cix,sky1-system-control.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Cix Sky1 SoC system control register region
+
+maintainers:
+  - Gary Yang <gary.yang@cixtech.com>
+
+description:
+  An wide assortment of registers of the system controller on Sky1 SoC,
+  including resets, usb, wakeup sources and so on.
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - cix,sky1-system-control
+          - cix,sky1-s5-system-control
+      - const: syscon
+      - const: simple-mfd