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[v2,1/3] dt-bindings: i2c: mv64xxx: update bindings for unstuck register

Message ID 20231006003321.2100016-2-chris.packham@alliedtelesis.co.nz
State New
Headers show
Series i2c: mv64xxx: Support for I2C unstuck | expand

Commit Message

Chris Packham Oct. 6, 2023, 12:33 a.m. UTC 
Some newer Marvell SoCs support an "unstuck" function for I2C bus
recovery. This is an alternative to the generic GPIO based recovery that
the older SoCs use. The unstuck register falls outside of the usual
address block for the I2C controller so requires an additional cell in
the register property. This is optional and does not need to be
supplied.

Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
---

Notes:
    Changes in v2:
    - Collect ack from Conor

 .../devicetree/bindings/i2c/marvell,mv64xxx-i2c.yaml         | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)
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Patch

diff --git a/Documentation/devicetree/bindings/i2c/marvell,mv64xxx-i2c.yaml b/Documentation/devicetree/bindings/i2c/marvell,mv64xxx-i2c.yaml
index 984fc1ed3ec6..461d1c9ee3f7 100644
--- a/Documentation/devicetree/bindings/i2c/marvell,mv64xxx-i2c.yaml
+++ b/Documentation/devicetree/bindings/i2c/marvell,mv64xxx-i2c.yaml
@@ -45,7 +45,10 @@  properties:
       auto-detects this and sets it appropriately.
 
   reg:
-    maxItems: 1
+    minItems: 1
+    items:
+      - description: I2C controller registers
+      - description: I2C unstuck register
 
   interrupts:
     maxItems: 1