[v4,1/2] dt-bindings: i3c: MIPI I3C Host Controller Interface

Commit Message

Nicolas Pitre Nov. 11, 2020, 10:05 p.m. UTC

From: Nicolas Pitre <[e-mail]>

The MIPI I3C HCI (Host Controller Interface) specification defines
a common software driver interface to support compliant MIPI I3C
host controller hardware implementations from multiple vendors.

All that is needed is an I/O area and an interrupt signal;. The hardware
is self-advertising wrt its implementor and implemented capabilities so
there is currently no details that the driver can't figure out on its own.

Signed-off-by: Nicolas Pitre <[e-mail]>
Reviewed-by: Rob Herring <[e-mail]>
---
 .../devicetree/bindings/i3c/mipi-i3c-hci.yaml | 47 +++++++++++++++++++
 1 file changed, 47 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/i3c/mipi-i3c-hci.yaml

Patch

diff --git a/Documentation/devicetree/bindings/i3c/mipi-i3c-hci.yaml b/Documentation/devicetree/bindings/i3c/mipi-i3c-hci.yaml
new file mode 100644
index 0000000000..07a7b10163
--- /dev/null
+++ b/Documentation/devicetree/bindings/i3c/mipi-i3c-hci.yaml
@@ -0,0 +1,47 @@ 
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/i3c/mipi-i3c-hci.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: MIPI I3C HCI Device Tree Bindings
+
+maintainers:
+  - Nicolas Pitre <[e-mail]>
+
+description: |
+  MIPI I3C Host Controller Interface
+
+  The MIPI I3C HCI (Host Controller Interface) specification defines
+  a common software driver interface to support compliant MIPI I3C
+  host controller hardware implementations from multiple vendors.
+
+  The hardware is self-advertising for differences in implementation
+  capabilities, including the spec version it is based on, so there
+  isn't much to describe here (yet).
+
+  For details, please see:
+  https://www.mipi.org/specifications/i3c-hci
+
+properties:
+  compatible:
+    const: mipi-i3c-hci
+  reg:
+    maxItems: 1
+  interrupts:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - interrupts
+
+additionalProperties: false
+
+examples:
+  - |
+    i3c@a0000000 {
+      compatible = "mipi-i3c-hci";
+      reg = <0xa0000000 0x2000>;
+      interrupts = <89>;
+    };