Initial import of firmware and host projects

modules/ip5306/dts/bindings/power/injoinic,ip5306.yaml

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+title: Injoinic IP5306 PMIC
+
+description: |
+  Injoinic IP5306 power management IC accessed over I2C.
+  This binding exposes two status bits and an optional KEY pin keepalive
+  pulse output.
+
+compatible: "injoinic,ip5306"
+
+include: i2c-device.yaml
+
+properties:
+  keepalive-gpios:
+    type: phandle-array
+    description: |
+      GPIO connected to KEY pin. The driver sends periodic pulses on this pin
+      to keep boost output alive.
+
+  keepalive-pulse-ms:
+    type: int
+    default: 100
+    description: Pulse width in milliseconds for each keepalive pulse.
+
+  keepalive-interval-ms:
+    type: int
+    default: 20000
+    description: Interval in milliseconds between keepalive pulses.
+
+  keepalive-offload:
+    type: boolean
+    description: |
+      Prefer hardware keepalive offload backend when available on this SoC.
+      If not set, driver always uses software keepalive backend.

modules/ip5306/dts/bindings/vendor-prefixes.txt

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+injoinic	Injoinic