[PATCH v3 1/5] dt-bindings: i3c: mipi-i3c-hci: add Microchip SAMA7D65 compatible

Manikandan Muralidharan
2026-03-12T04:22:09Z

Add the microchip,sama7d65-i3c-hci compatible string to the MIPI I3C
HCI binding. The Microchip SAMA7D65 I3C controller is based on the
MIPI HCI specification but requires two clocks, so add a conditional
constraint when this compatible is present.

Signed-off-by: Manikandan Muralidharan <manikandan.m@microchip.com>
---
.../devicetree/bindings/i3c/mipi-i3c-hci.yaml | 22 +++++++++++++++----
1 file changed, 18 insertions(+), 4 deletions(-)

diff --git a/Documentation/devicetree/bindings/i3c/mipi-i3c-hci.yaml b/Documentation/devicetree/bindings/i3c/mipi-i3c-hci.yaml
index 39bb1a1784c9..db659388a27d 100644
--- a/Documentation/devicetree/bindings/i3c/mipi-i3c-hci.yaml
+++ b/Documentation/devicetree/bindings/i3c/mipi-i3c-hci.yaml
@@ -9,9 +9,6 @@ title: MIPI I3C HCI
maintainers:
- Nicolas Pitre <npitre@baylibre.com>

-allOf:
- - $ref: /schemas/i3c/i3c.yaml#
-
description: |
MIPI I3C Host Controller Interface

@@ -28,7 +25,9 @@ description: |

properties:
compatible:
- const: mipi-i3c-hci
+ enum:
+ - mipi-i3c-hci
+ - microchip,sama7d65-i3c-hci
reg:
maxItems: 1
interrupts:
@@ -39,6 +38,21 @@ required:
- reg
- interrupts

+allOf:
+ - $ref: /schemas/i3c/i3c.yaml#
+ - if:
+ properties:
+ compatible:
+ contains:
+ const: microchip,sama7d65-i3c-hci
+ then:
+ properties:
+ clocks:
+ minItems: 2
+ maxItems: 2
+ required:
+ - clocks
+
unevaluatedProperties: false